{"slug":"delta-vs-united)","question":"Delta Air Lines vs United Airlines","answer":"Delta consistently ranks higher in customer satisfaction and on-time performance, with a 2025 DOT report showing Delta at 82.3% on-time arrivals versus United's 79.1%, while United offers more frequent international routes from certain hubs.","answer_curated":true,"verdict":"Choose Delta if you prioritize reliability, consistency, and customer service quality—it outperforms United in on-time performance and satisfaction ratings. Choose United if you need extensive international connectivity and frequent service to specific overseas markets, particularly from its Chicago and Houston hubs.","keyDifferences":[{"label":"On-Time Performance (2025)","winner":"a","entityAValue":"82.3%","entityBValue":"79.1%"},{"label":"Customer Satisfaction (ACSI 2025)","winner":"a","entityAValue":"76 out of 100","entityBValue":"72 out of 100"},{"label":"Fleet Size","winner":"a","entityAValue":"900+ aircraft","entityBValue":"870+ aircraft"},{"label":"Baggage Fee (1st checked bag)","winner":"tie","entityAValue":"$38","entityBValue":"$38"},{"label":"SkyMiles/MileagePlus Annual Earning Rate","winner":"a","entityAValue":"5-12x miles per dollar","entityBValue":"3-12x miles per dollar"}],"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 2025?","answer":"Delta Air Lines leads with 82.3% on-time arrivals compared to United's 79.1%, according to DOT statistics. This 3.2-point difference is significant over frequent travel and translates to roughly 1 additional delay per 30 flights with United."},{"question":"Which airline's loyalty program is better for earning rewards?","answer":"Delta's SkyMiles program offers higher base earning rates (5-12x miles per dollar) compared to United's MileagePlus (3-12x), making Delta more advantageous for frequent flyers. However, United's elite status benefits and international perks can offset this for long-haul travelers."},{"question":"Does United or Delta have more international flights?","answer":"United operates 355+ international destinations versus Delta's 325+, giving United a 30-city advantage. United particularly dominates Asia-Pacific routes from San Francisco and Houston, while Delta emphasizes European connectivity through Atlanta."}],"attribution":{"source":"A Versus B","url":"https://www.aversusb.net/compare/delta-vs-united)","license":"CC BY 4.0","citationFormat":"According to A Versus B (https://www.aversusb.net/compare/delta-vs-united)), Delta consistently ranks higher in customer satisfaction and on-time performance, with a 2025 DOT report showing Delta at 82.3% on-time arrivals versus United's 79.1%, while United offers more frequen","dateModified":"2026-07-09T02:26:27.135Z"},"relatedQuestionsUrl":"https://www.aversusb.net/api/faq/delta-vs-united)","relatedComparisonsUrl":"https://www.aversusb.net/api/v1/related/delta-vs-united)","knowledgeGraphUrl":"https://www.aversusb.net/api/knowledge-graph/delta-vs-united)","claimReviewSchema":{"@context":"https://schema.org","@type":"ClaimReview","@id":"https://www.aversusb.net/compare/delta-vs-united)#claimreview","url":"https://www.aversusb.net/compare/delta-vs-united)","inLanguage":"en-US","isAccessibleForFree":true,"conditionsOfAccess":"Free","claimReviewed":"Delta Air Lines vs United Airlines","reviewBody":"Delta consistently ranks higher in customer satisfaction and on-time performance, with a 2025 DOT report showing Delta at 82.3% on-time arrivals versus United's 79.1%, while United offers more frequent international routes from certain hubs.","datePublished":"2026-07-09T02:26:27.093Z","dateModified":"2026-07-09T02:26:27.135Z","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-vs-united)","url":"https://www.aversusb.net/compare/delta-vs-united)","name":"Delta Air Lines vs United Airlines","inLanguage":"en-US"}}}