US airlines' economy comfort is similar, aircraft vary

Delta, American, and United offer similar economy class experiences, with no clear winner for overall comfort, though some aircraft configurations vary. Delta's economy class on the Airbus A321neo and Boeing 737-800 features Collins Aerospace Meridian seats, as do United's A321neos. American also uses Meridian seats on its A321neos. Factors like aircraft age and seat pitch influence comfort, with newer planes like the 787 Dreamliner offering enhanced cabin experiences. Basic economy fares have limited flexibility across all three airlines.