Basic economy tickets are ineligible for refunds and don't include seat selection. Economy Plus features standard economy seats with extra legroom. Standard economy includes seat selection and a free carry-on. All three economy classes charge for checked bags on domestic flights.

Yes, the primary difference between United's standard Economy and Economy Plus is the "pitch," or the amount of legroom. Economy Plus seats offer up to 6 inches (15 cm) of extra legroom compared to standard economy. These seats are located in the forward part of the economy cabin, which also means you are among the first to deplane upon arrival. While the seat width and the on-board service (food, drinks, and entertainment) are exactly the same as standard economy, many Economy Plus seats are guaranteed to have in-seat power outlets, which is not always a guarantee in the very back of the plane. It is essentially the "same service, more space." For a 2026 traveler, this upgrade is often viewed as a middle ground for those who want extra comfort without the high cost of "Premium Plus" or "Polaris" business class. Note that "Basic Economy" is a different, more restrictive tier that lacks even the seat selection of standard Economy.