Delta Air Lines vs United Airlines
type: WebPage
description: Delta operates a larger fleet (900+ aircraft vs 850+) and maintains slightly higher on-time performance (83% vs 81%), while United offers more international routes (350+ destinations vs 325+) and competitive pricing on premium economy seats. Both are major US carriers with similar safety records and frequent flyer programs.
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date published: 2026-03-27T14:40:25.771Z
date created: 2026-03-27T14:40:25.771Z
date modified: 2026-06-21T18:01:41.691Z
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caption: Delta Air Lines vs United Airlines — Side-by-side comparison on A Versus B

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Delta Air Lines vs United Airlines
type: Article
type: TechArticle
abstract: Delta operates a larger fleet (900+ aircraft vs 850+) and maintains slightly higher on-time performance (83% vs 81%), while United offers more international routes (350+ destinations vs 325+) and competitive pricing on premium economy seats. Both are major US carriers with similar safety records and frequent flyer programs.
description: Delta operates a larger fleet (900+ aircraft vs 850+) and maintains slightly higher on-time performance (83% vs 81%), while United offers more international routes (350+ destinations vs 325+) and competitive pricing on premium economy seats. Both are major US carriers with similar safety records and frequent flyer programs.
language: en-US
main entity of page: Delta Air Lines vs United Airlines
content reference time: 2026-06-21T18:01:41.691Z
author: A Versus B
publisher: A Versus B
date published: 2026-03-27T14:40:25.771Z
date created: 2026-03-27T14:40:25.771Z
date modified: 2026-06-21T18:01:41.691Z
text: Choose Delta if you prioritize reliability, on-time performance, and domestic connectivity with solid customer satisfaction scores. Choose United if you need extensive international coverage, more frequent flights to European and Asian hubs, and don't mind slightly lower punctuality ratings. Both offer comparable pricing and frequent flyer benefits, making the choice dependent on your route preferences and priority needs.
genre: Travel
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  object: Delta Air Lines
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about: Delta Air Lines
about: United Airlines
mentions: Fleet Size
mentions: On-Time Performance (2025)
mentions: International Destinations
mentions: Annual Revenue (2024)
mentions: Average Baggage Fee (First Checked Bag)
mentions: SkyMiles/MileagePlus Elite Earning Rate
mentions: Customer Satisfaction Score (J.D. Power 2025)
related link: https://www.aversusb.net/compare/united-airlines-vs-delta-air-lines-comparison-2025-2026
related link: https://www.aversusb.net/compare/delta-vs-united
related link: https://www.aversusb.net/compare/united-airlines-vs-delta-air-lines-comparison-2026
related link: https://www.aversusb.net/compare/delta-vs-united-airlines-comparison-2026
related link: https://www.aversusb.net/compare/united-airlines-vs-delta-airlines-comparison-2026
related link: https://www.aversusb.net/compare/united-vs-delta-2026
related link: https://www.aversusb.net/compare/delta-airlines-vs-united
related link: https://www.aversusb.net/compare/delta-vs-united-airlines-comparison-2025-2026
citation: Delta Air Lines — Wikipedia
citation: United Airlines — Wikipedia
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significant link: https://www.aversusb.net/entity/united-airlines
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A Versus B
type: Organization

Delta Air Lines
type: Organization
description: Major U.S. carrier with 900+ aircraft and strongest on-time performance in the industry.
alternate name: DAL
language: en-US
image: ImageObject
  caption: Delta Air Lines
subject of: Delta Air Lines vs United Airlines

United Airlines
type: Organization
description: Major U.S. carrier with 800+ aircraft and most extensive international route network.
alternate name: UA
language: en-US
image: ImageObject
  caption: United Airlines
subject of: Delta Air Lines vs United Airlines

Delta Air Lines vs United Airlines — Comparison Data
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description: Structured comparison data for Delta Air Lines vs United Airlines with 162 attributes.
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creator: A Versus B
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variable measured: Ultra-Long-Range Aircraft Orders

Delta Air Lines vs United Airlines — Attribute Category Vocabulary
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description: Taxonomy of attribute categories used to classify comparison data for Delta Air Lines vs United Airlines.
has defined term: Fleet Operations
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has defined term: Legacy Narrowbody Fleet
has defined term: Long-Haul Capacity
has defined term: Strategy
has defined term: Business Model
has defined term: Future Fleet
has defined term: Legacy Aircraft
has defined term: Loyalty
has defined term: Route Network
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has defined term: Fleet Modernization
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has defined term: Operations
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has defined term: Strategic Focus
has defined term: Financial Performance
has defined term: Revenue Growth
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has defined term: Aircraft Technology
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has defined term: Performance
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has defined term: Operational Excellence
has defined term: Reliability
has defined term: Aircraft
has defined term: Scale
has defined term: Fleet
has defined term: Coverage
has defined term: Premium Cabin
has defined term: Network Size
has defined term: Customer Loyalty
has defined term: Expansion
has defined term: International
has defined term: Global Coverage
has defined term: Network Strategy
has defined term: Community
has defined term: Rewards

Fleet Operations
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term code: fleet-operations
in defined term set: Delta Air Lines vs United Airlines — Attribute Category Vocabulary

Modern Narrowbody Fleet
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term code: modern-narrowbody-fleet
in defined term set: Delta Air Lines vs United Airlines — Attribute Category Vocabulary

Legacy Narrowbody Fleet
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term code: legacy-narrowbody-fleet
in defined term set: Delta Air Lines vs United Airlines — Attribute Category Vocabulary

Long-Haul Capacity
type: DefinedTerm
term code: long-haul-capacity
in defined term set: Delta Air Lines vs United Airlines — Attribute Category Vocabulary

Strategy
type: DefinedTerm
term code: strategy
in defined term set: Delta Air Lines vs United Airlines — Attribute Category Vocabulary

Business Model
type: DefinedTerm
term code: business-model
in defined term set: Delta Air Lines vs United Airlines — Attribute Category Vocabulary

Future Fleet
type: DefinedTerm
term code: future-fleet
in defined term set: Delta Air Lines vs United Airlines — Attribute Category Vocabulary

Legacy Aircraft
type: DefinedTerm
term code: legacy-aircraft
in defined term set: Delta Air Lines vs United Airlines — Attribute Category Vocabulary

Loyalty
type: DefinedTerm
term code: loyalty
in defined term set: Delta Air Lines vs United Airlines — Attribute Category Vocabulary

Route Network
type: DefinedTerm
term code: route-network
in defined term set: Delta Air Lines vs United Airlines — Attribute Category Vocabulary

Fleet Composition
type: DefinedTerm
term code: fleet-composition
in defined term set: Delta Air Lines vs United Airlines — Attribute Category Vocabulary

Fleet Modernization
type: DefinedTerm
term code: fleet-modernization
in defined term set: Delta Air Lines vs United Airlines — Attribute Category Vocabulary

Service Quality
type: DefinedTerm
term code: service-quality
in defined term set: Delta Air Lines vs United Airlines — Attribute Category Vocabulary

Customer Experience
type: DefinedTerm
term code: customer-experience
in defined term set: Delta Air Lines vs United Airlines — Attribute Category Vocabulary

Business Strategy
type: DefinedTerm
term code: business-strategy
in defined term set: Delta Air Lines vs United Airlines — Attribute Category Vocabulary

Passenger Experience
type: DefinedTerm
term code: passenger-experience
in defined term set: Delta Air Lines vs United Airlines — Attribute Category Vocabulary

Premium Amenities
type: DefinedTerm
term code: premium-amenities
in defined term set: Delta Air Lines vs United Airlines — Attribute Category Vocabulary

Fleet Strategy
type: DefinedTerm
term code: fleet-strategy
in defined term set: Delta Air Lines vs United Airlines — Attribute Category Vocabulary

Cabin Technology
type: DefinedTerm
term code: cabin-technology
in defined term set: Delta Air Lines vs United Airlines — Attribute Category Vocabulary

Cabin Classes
type: DefinedTerm
term code: cabin-classes
in defined term set: Delta Air Lines vs United Airlines — Attribute Category Vocabulary

Financial
type: DefinedTerm
term code: financial
in defined term set: Delta Air Lines vs United Airlines — Attribute Category Vocabulary

Cabin Amenities
type: DefinedTerm
term code: cabin-amenities
in defined term set: Delta Air Lines vs United Airlines — Attribute Category Vocabulary

Operations
type: DefinedTerm
term code: operations
in defined term set: Delta Air Lines vs United Airlines — Attribute Category Vocabulary

Premium Service
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term code: premium-service
in defined term set: Delta Air Lines vs United Airlines — Attribute Category Vocabulary

Passenger Amenities
type: DefinedTerm
term code: passenger-amenities
in defined term set: Delta Air Lines vs United Airlines — Attribute Category Vocabulary

Competitive Position
type: DefinedTerm
term code: competitive-position
in defined term set: Delta Air Lines vs United Airlines — Attribute Category Vocabulary

Amenities
type: DefinedTerm
term code: amenities
in defined term set: Delta Air Lines vs United Airlines — Attribute Category Vocabulary

Routes
type: DefinedTerm
term code: routes
in defined term set: Delta Air Lines vs United Airlines — Attribute Category Vocabulary

Premium Services
type: DefinedTerm
term code: premium-services
in defined term set: Delta Air Lines vs United Airlines — Attribute Category Vocabulary

Strategic Focus
type: DefinedTerm
term code: strategic-focus
in defined term set: Delta Air Lines vs United Airlines — Attribute Category Vocabulary

Financial Performance
type: DefinedTerm
term code: financial-performance
in defined term set: Delta Air Lines vs United Airlines — Attribute Category Vocabulary

Revenue Growth
type: DefinedTerm
term code: revenue-growth
in defined term set: Delta Air Lines vs United Airlines — Attribute Category Vocabulary

External Impact
type: DefinedTerm
term code: external-impact
in defined term set: Delta Air Lines vs United Airlines — Attribute Category Vocabulary

Product Innovation
type: DefinedTerm
term code: product-innovation
in defined term set: Delta Air Lines vs United Airlines — Attribute Category Vocabulary

Aircraft Technology
type: DefinedTerm
term code: aircraft-technology
in defined term set: Delta Air Lines vs United Airlines — Attribute Category Vocabulary

Operations & Reliability
type: DefinedTerm
term code: operations-&-reliability
in defined term set: Delta Air Lines vs United Airlines — Attribute Category Vocabulary

Pricing
type: DefinedTerm
term code: pricing
in defined term set: Delta Air Lines vs United Airlines — Attribute Category Vocabulary

Loyalty Program
type: DefinedTerm
term code: loyalty-program
in defined term set: Delta Air Lines vs United Airlines — Attribute Category Vocabulary

Network Reach
type: DefinedTerm
term code: network-reach
in defined term set: Delta Air Lines vs United Airlines — Attribute Category Vocabulary

Product Quality
type: DefinedTerm
term code: product-quality
in defined term set: Delta Air Lines vs United Airlines — Attribute Category Vocabulary

Customer Service
type: DefinedTerm
term code: customer-service
in defined term set: Delta Air Lines vs United Airlines — Attribute Category Vocabulary

Network
type: DefinedTerm
term code: network
in defined term set: Delta Air Lines vs United Airlines — Attribute Category Vocabulary

Comfort
type: DefinedTerm
term code: comfort
in defined term set: Delta Air Lines vs United Airlines — Attribute Category Vocabulary

Rewards Program
type: DefinedTerm
term code: rewards-program
in defined term set: Delta Air Lines vs United Airlines — Attribute Category Vocabulary

Product
type: DefinedTerm
term code: product
in defined term set: Delta Air Lines vs United Airlines — Attribute Category Vocabulary

Performance
type: DefinedTerm
term code: performance
in defined term set: Delta Air Lines vs United Airlines — Attribute Category Vocabulary

Loyalty Programs
type: DefinedTerm
term code: loyalty-programs
in defined term set: Delta Air Lines vs United Airlines — Attribute Category Vocabulary

Customer Service & Reliability
type: DefinedTerm
term code: customer-service-&-reliability
in defined term set: Delta Air Lines vs United Airlines — Attribute Category Vocabulary

Operational Excellence
type: DefinedTerm
term code: operational-excellence
in defined term set: Delta Air Lines vs United Airlines — Attribute Category Vocabulary

Reliability
type: DefinedTerm
term code: reliability
in defined term set: Delta Air Lines vs United Airlines — Attribute Category Vocabulary

Aircraft
type: DefinedTerm
term code: aircraft
in defined term set: Delta Air Lines vs United Airlines — Attribute Category Vocabulary

Scale
type: DefinedTerm
term code: scale
in defined term set: Delta Air Lines vs United Airlines — Attribute Category Vocabulary

Fleet
type: DefinedTerm
term code: fleet
in defined term set: Delta Air Lines vs United Airlines — Attribute Category Vocabulary

Coverage
type: DefinedTerm
term code: coverage
in defined term set: Delta Air Lines vs United Airlines — Attribute Category Vocabulary

Premium Cabin
type: DefinedTerm
term code: premium-cabin
in defined term set: Delta Air Lines vs United Airlines — Attribute Category Vocabulary

Network Size
type: DefinedTerm
term code: network-size
in defined term set: Delta Air Lines vs United Airlines — Attribute Category Vocabulary

Customer Loyalty
type: DefinedTerm
term code: customer-loyalty
in defined term set: Delta Air Lines vs United Airlines — Attribute Category Vocabulary

Expansion
type: DefinedTerm
term code: expansion
in defined term set: Delta Air Lines vs United Airlines — Attribute Category Vocabulary

International
type: DefinedTerm
term code: international
in defined term set: Delta Air Lines vs United Airlines — Attribute Category Vocabulary

Global Coverage
type: DefinedTerm
term code: global-coverage
in defined term set: Delta Air Lines vs United Airlines — Attribute Category Vocabulary

Network Strategy
type: DefinedTerm
term code: network-strategy
in defined term set: Delta Air Lines vs United Airlines — Attribute Category Vocabulary

Community
type: DefinedTerm
term code: community
in defined term set: Delta Air Lines vs United Airlines — Attribute Category Vocabulary

Rewards
type: DefinedTerm
term code: rewards
in defined term set: Delta Air Lines vs United Airlines — Attribute Category Vocabulary

faq
type: FAQPage
language: en-US
is accessible for free: true
conditions of access: Free
date modified: 2026-06-21T18:01:41.691Z
author: A Versus B
publisher: A Versus B
is part of: Delta Air Lines vs United Airlines
main entity: Which airline has better on-time performance, Delta or United?
  type: Question
  accepted answer: Answer
    text: Delta significantly outperforms United in on-time arrivals. According to 2025 DOT data, Delta achieved 83.2% on-time performance while United achieved 80.8%. This 2.4 percentage point difference means Delta passengers are statistically more likely to arrive on schedule. Delta's superior performance is attributed to better crew scheduling, predictive maintenance programs, and operational slack built into flight schedules.
    language: en-US
main entity: Does United fly to more countries than Delta?
  type: Question
  accepted answer: Answer
    text: Yes, United operates flights to more international destinations than Delta. United serves 350+ destinations globally with particularly strong coverage in Asia-Pacific (18 daily flights to Asia) and Europe. Delta serves 325+ destinations but maintains stronger Caribbean and Central American routes. For Asia-Pacific travelers, United's network is significantly more extensive.
    language: en-US
main entity: How do the frequent flyer programs compare between Delta SkyMiles and United MileagePlus?
  type: Question
  accepted answer: Answer
    text: Both programs offer similar base earning rates (1 mile per $1 spent on base fares) and comparable redemption flexibility. Key differences: SkyMiles provides better direct access to premium cabin upgrades through elite status, while MileagePlus allows transferable points to 12+ hotel partners (Marriott, Hyatt, etc.), offering more redemption flexibility. SkyMiles focuses on airline benefits, while MileagePlus emphasizes travel partner ecosystem. Choice depends on whether you prefer airline-focused or diversified redemptions.
    language: en-US
main entity: Which airline has better baggage policies?
  type: Question
  accepted answer: Answer
    text: Both airlines charge identical baggage fees: $35 for the first checked bag. However, frequent flyer elite members receive free checked bags on both carriers starting at lower elite tiers (Silver for Delta, Premier Silver for United). Neither airline provides significant baggage policy differentiation. Choice here is neutral, though loyalty program status may offer advantages on either carrier.
    language: en-US
main entity: What are the main reasons for United's operational disruptions in 2024-2025?
  type: Question
  accepted answer: Answer
    text: United experienced multiple labor disputes with pilots (contract negotiations) and flight attendants (staffing demands), contributing to higher cancellation rates and lower on-time performance compared to Delta. Additionally, United's rapid expansion of international routes strained crew scheduling systems. Delta's more gradual capacity growth and established labor agreements contributed to its superior operational metrics during this period.
    language: en-US

Q4 2025 Revenue Growth Rate
type: PropertyValue
value reference: Revenue Growth

Primary Narrowbody Aircraft
type: PropertyValue
value reference: Fleet Composition

Widebody Fleet Modernization
type: PropertyValue
value reference: Fleet Strategy

New Aircraft Deliveries Status
type: PropertyValue
value reference: Fleet Modernization

Revenue Diversification Programs
type: PropertyValue
value reference: Business Strategy

Aircraft Fleet Diversity Index
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value reference: Fleet Operations

Fleet Age Modernization Progress
type: PropertyValue
value reference: Fleet Strategy

Fleet Size Advantage
type: PropertyValue
value reference: Competitive Position

Business Class Seat Screen Size
type: PropertyValue
value reference: Premium Amenities

Ultra-Long-Range Aircraft Orders
type: PropertyValue
value reference: Fleet Strategy

Next-Generation Narrowbody Integration
type: PropertyValue
value reference: Fleet Modernization

Premium Cabin Redesign Timeline
type: PropertyValue
value reference: Product Innovation

A350-1000 Wing Size vs A321XLR Range
type: PropertyValue
value reference: Aircraft Technology

Business Class Display Screen Size
type: PropertyValue
value reference: Cabin Amenities

Global Destination Leadership 2026
type: PropertyValue
value reference: Route Network

Engine Technology - Long-haul Aircraft
type: PropertyValue
value reference: Aircraft Technology

Wireless Charging in Business Class
type: PropertyValue
value reference: Cabin Technology

Aircraft Fleet Modernization Scope
type: PropertyValue
value reference: Fleet Strategy

Stock Performance Trajectory 2026
type: PropertyValue
value reference: Financial Performance

On-Time Arrival Rate (2025)
type: PropertyValue
value reference: Operations & Reliability

Average Domestic Ticket Price
type: PropertyValue
value reference: Pricing

Customer Satisfaction Score (J.D. Power 2025)
type: PropertyValue
value reference: Customer Experience

Frequent Flyer Elite Status Threshold
type: PropertyValue
value reference: Loyalty Program

Involuntary Overbooking Rate
type: PropertyValue
value reference: Operations & Reliability

Global Destinations
type: PropertyValue
value reference: Network Reach

First-Class Seat Pitch (Long-Haul)
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value reference: Product Quality

On-Time Performance
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value reference: Operations

Annual Passengers
type: PropertyValue
value reference: Operations

Customer Satisfaction (ACSI Score)
type: PropertyValue
value reference: Customer Service

First Checked Baggage Fee
type: PropertyValue
value reference: Pricing

Frequent Flyer Program Members
type: PropertyValue
value reference: Loyalty

DOT Complaints per 100k Passengers
type: PropertyValue
value reference: Service Quality

International Destinations
type: PropertyValue
value reference: Network

Fleet Size
type: PropertyValue
value reference: Operations

Customer Satisfaction (J.D. Power 2024)
type: PropertyValue
value reference: Customer Experience

Economy Seat Pitch
type: PropertyValue
value reference: Comfort

Premium Economy Seat Pitch
type: PropertyValue
value reference: Comfort

Daily Domestic Flights
type: PropertyValue
value reference: Network

Frequent Flyer Base Earning Rate
type: PropertyValue
value reference: Rewards Program

Customer Satisfaction Score
type: PropertyValue
value reference: Customer Experience

Average Annual Revenue
type: PropertyValue
value reference: Financial

Customer Satisfaction (J.D. Power 2025)
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value reference: Customer Experience

Average Domestic One-Way Base Fare
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value reference: Pricing

Premium Cabin Seat Pitch (Business/Polaris)
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value reference: Amenities

Customer Satisfaction Rating
type: PropertyValue
value reference: Customer Service

International Destinations Served
type: PropertyValue
value reference: Network

Average Domestic Round-Trip Ticket Price
type: PropertyValue
value reference: Pricing

Main Hub Count and Size
type: PropertyValue
value reference: Network

Premium Economy Legroom Benefit
type: PropertyValue
value reference: Product

Total Aircraft Fleet
type: PropertyValue
value reference: Operations

On-Time Arrival Rate (2024)
type: PropertyValue
value reference: Performance

Daily Flights Operated
type: PropertyValue
value reference: Operations

Customer Satisfaction Score (J.D. Power 2024)
type: PropertyValue
value reference: Customer Service

Annual Frequent Flyer Miles Devaluation
type: PropertyValue
value reference: Loyalty Programs

Widebody Aircraft (787/777/350)
type: PropertyValue
value reference: Fleet Composition

DOT Complaints Per 100,000 Passengers (2024)
type: PropertyValue
value reference: Customer Service & Reliability

On-Time Arrival Performance (2024)
type: PropertyValue
value reference: Operational Excellence

Total Fleet Size
type: PropertyValue
value reference: Operations

First Checked Baggage Fee (Economy)
type: PropertyValue
value reference: Pricing

J.D. Power Customer Satisfaction Score (2024)
type: PropertyValue
value reference: Customer Experience

Average Economy Seat Pitch
type: PropertyValue
value reference: Comfort

Domestic Hub Cities
type: PropertyValue
value reference: Route Network

On-Time Arrival Performance
type: PropertyValue
value reference: Reliability

Average Fleet Age
type: PropertyValue
value reference: Aircraft

DOT Complaint Rate
type: PropertyValue
value reference: Service Quality

Revenue Passenger Miles (Annual)
type: PropertyValue
value reference: Scale

Mishandled Baggage Rate
type: PropertyValue
value reference: Operations

Modern Aircraft (787/737MAX) Percentage
type: PropertyValue
value reference: Fleet

Complaint Ratio
type: PropertyValue
value reference: Customer Experience

Total Aircraft Fleet Size
type: PropertyValue
value reference: Operations

On-Time Arrival Rate
type: PropertyValue
value reference: Performance

Global Destinations Served
type: PropertyValue
value reference: Coverage

Average Domestic Round-Trip Ticket
type: PropertyValue
value reference: Pricing

Elite Frequent Flyer Entry Threshold
type: PropertyValue
value reference: Loyalty Program

Annual Revenue (2024)
type: PropertyValue
value reference: Financial Performance

Annual Revenue
type: PropertyValue
value reference: Financial

Destinations
type: PropertyValue
value reference: Network

Alliance
type: PropertyValue
value reference: Network

Business Class Lie-Flat Seats (Long-Haul)
type: PropertyValue
value reference: Premium Cabin

Premium Cabin Privacy Feature
type: PropertyValue
value reference: Premium Cabin

New Aircraft Deliveries (2026)
type: PropertyValue
value reference: Fleet Modernization

Business Class Experience Consistency
type: PropertyValue
value reference: Premium Service

Premium Lounge Access
type: PropertyValue
value reference: Amenities

Overall Flight Count
type: PropertyValue
value reference: Network Size

Transatlantic Business Class Quality
type: PropertyValue
value reference: Premium Service

Loyalty Program Updates
type: PropertyValue
value reference: Customer Loyalty

Onboard Experience Improvements
type: PropertyValue
value reference: Customer Service

New Destinations Launched (2026)
type: PropertyValue
value reference: Expansion

Long-Haul Route Innovation
type: PropertyValue
value reference: International

Customer Service Complaint Trend
type: PropertyValue
value reference: Reliability

Flight Delay/Cancellation Rate
type: PropertyValue
value reference: Reliability

International Network Reach
type: PropertyValue
value reference: Global Coverage

Regional Hub Focus
type: PropertyValue
value reference: Network Strategy

Widebody Fleet Strategy
type: PropertyValue
value reference: Fleet

Corporate Social Responsibility
type: PropertyValue
value reference: Community

Fleet Size
type: PropertyValue
value reference: Operations

Domestic Destinations
type: PropertyValue
value reference: Network

International Destinations
type: PropertyValue
value reference: Network

Free Checked Baggage
type: PropertyValue
value reference: Amenities

Average Domestic Ticket Price
type: PropertyValue
value reference: Pricing

On-Time Performance
type: PropertyValue
value reference: Operations

Customer Satisfaction Rating
type: PropertyValue
value reference: Service Quality

Loyalty Program Earning Rate
type: PropertyValue
value reference: Rewards