{"slug":"delta-airlines-vs-united)","question":"Delta Air Lines vs United Airlines","answer":"Delta operates 900+ aircraft with a 82.5% on-time arrival rate, while United operates 850+ aircraft with a 81.2% on-time rate; Delta consistently ranks higher in customer satisfaction with 3.8/5 stars versus United's 3.4/5 stars across major review platforms.","answer_curated":true,"verdict":"Delta Air Lines is the better choice for most leisure and business travelers prioritizing reliability and customer service, with superior on-time performance (82.5% vs 81.2%) and fewer complaints (2.8 vs 3.6 per 100,000 passengers). Choose United if you need more international destinations (340+ vs 320+) or prefer its hub structure for specific routes, though be prepared for lower overall satisfaction ratings and higher complaint volumes.","keyDifferences":[{"label":"On-Time Arrival Rate (2024)","winner":"a","entityAValue":"82.5%","entityBValue":"81.2%"},{"label":"Customer Satisfaction Rating","winner":"a","entityAValue":"3.8/5 stars","entityBValue":"3.4/5 stars"},{"label":"Fleet Size","winner":"a","entityAValue":"900+ aircraft","entityBValue":"850+ aircraft"},{"label":"Baggage Fee (First Checked Bag)","winner":"tie","entityAValue":"$35","entityBValue":"$35"},{"label":"Frequent Flyer Program Earning Rate","winner":"tie","entityAValue":"1 mile per $1 spent","entityBValue":"1 mile per $1 spent"}],"winner":{"slug":"delta-air-lines","name":"Delta Air Lines"},"confidence":"high","entities":[{"name":"Delta Air Lines","slug":"delta-air-lines","url":"https://www.aversusb.net/entity/delta-air-lines","alternativesUrl":"https://www.aversusb.net/api/v1/alternatives/delta-air-lines"},{"name":"United Airlines","slug":"united-airlines","url":"https://www.aversusb.net/entity/united-airlines","alternativesUrl":"https://www.aversusb.net/api/v1/alternatives/united-airlines"}],"faqs":[{"question":"Which airline has better on-time performance in 2024?","answer":"Delta Air Lines leads with an 82.5% on-time arrival rate compared to United's 81.2% according to U.S. Department of Transportation data. This 1.3 percentage point difference translates to approximately 5 additional delayed flights per 100 flights on United. Delta has maintained top-3 on-time performance rankings for five consecutive years."},{"question":"How do frequent flyer programs compare between Delta and United?","answer":"Both Delta SkyMiles and United MileagePlus offer the same 1 mile per $1 spent baseline earning rate. However, Delta provides a 10% mileage bonus on purchases made with their co-branded credit card, while United offers dynamic pricing in their award chart, meaning prices fluctuate based on demand. Delta's program is more predictable for planners, while United's may offer better deals during off-peak travel."},{"question":"Which airline has more international routes?","answer":"United Airlines operates 340+ international destinations compared to Delta's 320+, giving United a 20-destination advantage. United's hub-and-spoke model emphasizes international connectivity through hubs in Chicago, San Francisco, Newark, and Houston. However, Delta's overall passenger satisfaction on international routes is 0.5 points higher (3.9 vs 3.4 stars)."}],"attribution":{"source":"A Versus B","url":"https://www.aversusb.net/compare/delta-airlines-vs-united)","license":"CC BY 4.0","citationFormat":"According to A Versus B (https://www.aversusb.net/compare/delta-airlines-vs-united)), Delta operates 900+ aircraft with a 82.5% on-time arrival rate, while United operates 850+ aircraft with a 81.2% on-time rate; Delta consistently ranks higher in customer satisfaction with 3.8/5 stars","dateModified":"2026-07-09T08:41:03.553Z"},"relatedQuestionsUrl":"https://www.aversusb.net/api/faq/delta-airlines-vs-united)","relatedComparisonsUrl":"https://www.aversusb.net/api/v1/related/delta-airlines-vs-united)","knowledgeGraphUrl":"https://www.aversusb.net/api/knowledge-graph/delta-airlines-vs-united)","claimReviewSchema":{"@context":"https://schema.org","@type":"ClaimReview","@id":"https://www.aversusb.net/compare/delta-airlines-vs-united)#claimreview","url":"https://www.aversusb.net/compare/delta-airlines-vs-united)","inLanguage":"en-US","isAccessibleForFree":true,"conditionsOfAccess":"Free","claimReviewed":"Delta Air Lines vs United Airlines","reviewBody":"Delta operates 900+ aircraft with a 82.5% on-time arrival rate, while United operates 850+ aircraft with a 81.2% on-time rate; Delta consistently ranks higher in customer satisfaction with 3.8/5 stars versus United's 3.4/5 stars across major review platforms.","datePublished":"2026-07-09T08:41:03.523Z","dateModified":"2026-07-09T08:41:03.553Z","reviewRating":{"@type":"Rating","ratingValue":5,"worstRating":1,"bestRating":5,"alternateName":"High Confidence"},"author":{"@type":"Organization","@id":"https://www.aversusb.net/#organization","name":"A Versus B","url":"https://www.aversusb.net"},"itemReviewed":{"@type":"WebPage","@id":"https://www.aversusb.net/compare/delta-airlines-vs-united)","url":"https://www.aversusb.net/compare/delta-airlines-vs-united)","name":"Delta Air Lines vs United Airlines","inLanguage":"en-US"}}}