The price an airline shows you can depend on how many people you search for. Thrifty Traveler published a study on October 30 of 5,000 nonstop domestic one-way flights, 1,000 on each of the five largest U.S. airlines. It found American charging a single traveler more than each person in a group on 33.5% of flights, by more than $90 on average, and United doing the same on 10.6%, by about $64. Live and Let's Fly picked up the findings on October 31.
What the study found
The cause is fare rules: some cheaper fares can only be booked with a second traveler on the same reservation, so a search for one person never shows them. The most extreme example was an American flight from Miami to Charlotte, $496 for one traveler in main cabin economy but $155 each for two or more. A basic economy fare at $100 also appeared only for groups.
Delta, Alaska and Southwest did not charge solo travelers more for the 1,000 flights checked on each. Thrifty Traveler says American and United have also used this pricing on some round trips, and American on some short international flights, for example to Mexico or the Caribbean. American did not answer requests for comment, and United declined to comment.
What this means if you've already booked
- Search for your real party size. When you check whether your fare has dropped, search for exactly the number of people on your booking. A price for one traveler can be higher or lower per person than the price for two, so a search for the wrong number can hide a drop or show one you can't get.
- Booked alone on American or United? A lower price that only appears for two travelers isn't one you can rebook into by yourself. Compare against the one-traveler price.
- Booked as a pair? The one-traveler price may be higher than what you'd pay together, so a drop for two can be real even when the solo price hasn't moved.
- Changing only one person on a shared booking. Neither report says what happens if one traveler on a fare that needed a companion changes flights alone. Ask the airline or check the fare rules before you rebook just one of you.
- Before you book a solo trip, both reports suggest repeating the search for two people and comparing the price per person for the same flight and fare.
Sources: Thrifty Traveler (October 30, 2026) · Live and Let's Fly (October 31, 2026)
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