{"slug":"united-airlines-vs-delta-air-lines","question":"United Airlines vs Delta Air Lines","answer":"Delta consistently ranks higher in customer satisfaction with a 4.2/5 rating versus United's 3.8/5, while United offers more frequent transatlantic routes and competitive pricing on premium economy seats. Delta maintains a newer fleet averaging 12.8 years old compared to United's 14.1 years, contributing to better reliability metrics.","answer_curated":true,"verdict":"Choose Delta Air Lines if you prioritize reliability, customer service, and a newer aircraft experience—its 81.5% on-time performance, higher satisfaction ratings, and fleet modernization justify slightly higher fares. Choose United Airlines if you need extensive international connectivity, prefer lower baggage fees ($35 vs $38), and value competitive pricing on transatlantic and premium routes.","keyDifferences":[{"label":"Customer Satisfaction Rating","winner":"b","entityAValue":"3.8/5 stars","entityBValue":"4.2/5 stars"},{"label":"On-Time Performance","winner":"b","entityAValue":"77.2% (2024)","entityBValue":"81.5% (2024)"},{"label":"Average Fleet Age","winner":"b","entityAValue":"14.1 years","entityBValue":"12.8 years"},{"label":"Number of International Destinations","winner":"a","entityAValue":"342 destinations","entityBValue":"325 destinations"},{"label":"Basic Economy Baggage Fee","winner":"a","entityAValue":"$35 for first checked bag","entityBValue":"$38 for first checked bag"}],"winner":{"slug":"delta-air-lines","name":"Delta Air Lines"},"confidence":"high","entities":[{"name":"United Airlines","slug":"united-airlines","url":"https://www.aversusb.net/entity/united-airlines","alternativesUrl":"https://www.aversusb.net/api/v1/alternatives/united-airlines"},{"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"}],"faqs":[{"question":"Which airline is more reliable—United or Delta?","answer":"Delta is more reliable with an 81.5% on-time arrival rate versus United's 77.2% (2024 data). Delta also has a newer fleet averaging 12.8 years old compared to United's 14.1 years, and receives 42% fewer DOT complaints (1.67 vs 2.14 per 100,000 passengers). For time-sensitive travel, Delta's track record is superior."},{"question":"Is United or Delta cheaper?","answer":"United offers lower baggage fees ($35 vs $38 for first checked bag) and typically competitive pricing on basic economy and premium cabin fares. However, Delta sometimes offers better premium cabin fares due to fleet modernization reducing maintenance costs. Overall pricing is comparable, but United edges out on baggage and budget routes while Delta matches or beats on premium routes."},{"question":"Which airline has better customer service ratings?","answer":"Delta ranks significantly higher with a 4.2/5 customer satisfaction rating versus United's 3.8/5 according to 2024 J.D. Power studies. Delta's higher rating correlates with better on-time performance, newer aircraft, and fewer service complaints. United has made service improvements but lags Delta across most customer satisfaction metrics."}],"attribution":{"source":"A Versus B","url":"https://www.aversusb.net/compare/united-airlines-vs-delta-air-lines","license":"CC BY 4.0","citationFormat":"According to A Versus B (https://www.aversusb.net/compare/united-airlines-vs-delta-air-lines), Delta consistently ranks higher in customer satisfaction with a 4.2/5 rating versus United's 3.8/5, while United offers more frequent transatlantic routes and competitive pricing on premium economy se","dateModified":"2026-06-24T06:04:08.643Z"},"relatedQuestionsUrl":"https://www.aversusb.net/api/faq/united-airlines-vs-delta-air-lines","relatedComparisonsUrl":"https://www.aversusb.net/api/v1/related/united-airlines-vs-delta-air-lines","knowledgeGraphUrl":"https://www.aversusb.net/api/knowledge-graph/united-airlines-vs-delta-air-lines","claimReviewSchema":{"@context":"https://schema.org","@type":"ClaimReview","@id":"https://www.aversusb.net/compare/united-airlines-vs-delta-air-lines#claimreview","url":"https://www.aversusb.net/compare/united-airlines-vs-delta-air-lines","inLanguage":"en-US","isAccessibleForFree":true,"conditionsOfAccess":"Free","claimReviewed":"United Airlines vs Delta Air Lines","reviewBody":"Delta consistently ranks higher in customer satisfaction with a 4.2/5 rating versus United's 3.8/5, while United offers more frequent transatlantic routes and competitive pricing on premium economy seats. Delta maintains a newer fleet averaging 12.8 years old compared to United's 14.1 years, contributing to better reliability metrics.","datePublished":"2026-03-27T15:00:08.907Z","dateModified":"2026-06-24T06:04:08.643Z","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/united-airlines-vs-delta-air-lines","url":"https://www.aversusb.net/compare/united-airlines-vs-delta-air-lines","name":"United Airlines vs Delta Air Lines","inLanguage":"en-US"}}}