United vs American Basic Economy: Carry-On, Seats and Bag Rules

The cheapest fare isn’t always the cheapest trip.

Carry-on

American Basic Economy generally includes a standard carry-on. United’s is more limited on many domestic routes, often personal item only.

Checked bags

Fees are higher on Basic fares, especially on American from May 18, 2026.

Seat selection

Both often limit free seat choice on Basic fares.

Changes and refunds

Basic fares are the most restricted, so check the rules before booking.

How to compare

1. Add the cost of a carry-on or checked bag.
2. Compare with a Main Cabin fare.
3. Check seat and change rules.

Need help? Call +1-800-984-7414. See this United or American Airlines which is better guide.