US Airline Baggage Calculator — Check Allowance & Fees

American Airlines — Main Cabin

Domestic / short haul

Personal item Included

Personal item 18 × 14 × 8 in

Must fit under the seat in front of you. Always free on every fare.

Carry-on bag Included

22 × 14 × 9 in

Standard overhead-bin carry-on. Free on Main Cabin and above.

Checked bag (50 lb) Extra

$35–$40 first bag

Cheapest paid online before airport check-in.

Seat selection Extra

$9–$59

Free standard seats at check-in 24 hours before departure.

Need more detail?

Our full US airline baggage guide covers carry-on dimensions, checked-bag fees, oversized fees and elite-status waivers.

Read the full guide

Tips to avoid baggage fees

The five things that cost most US passengers $40–$80 in avoidable extras.

Measure, don’t guess. Most US carriers will gate-check (and sometimes charge) any carry-on that doesn’t fit the 22×14×9 in sizer. Measure with wheels and handles included before you leave the house.
Prepay online, not at the airport. The first checked bag is typically $35–$40 if added during booking. At the airport it can climb to $40–$50, and on budget carriers like Spirit/Frontier the gate price is double the online rate.
Use a co-branded credit card. Many airline credit cards waive the first checked-bag fee for the cardholder and up to 4 companions on the same booking. The annual fee usually pays for itself in 2–3 round trips.
Check the fare type before the bag. Basic Economy on AA, DL and UA strips the carry-on benefit on long-haul international fares. Sometimes the fare upgrade is cheaper than the per-bag charge.
Skip Basic Economy for short connections. Basic-economy passengers board last on most airlines. If overhead bins fill up, your carry-on is gate-checked — which can cost you the connection.

Baggage Calculator FAQ

Are these prices accurate for my specific flight?

The ranges shown are typical pricing bands. The exact price depends on route, how close to departure you add the bag, and whether you add it during or after booking. Always double-check on the airline’s website before paying.

Do US airlines count a personal item separately from carry-on?

Yes. On every major US carrier you get one personal item (purse, laptop bag, small backpack) free in addition to your carry-on. Spirit and Frontier are the exceptions on their cheapest fares — only the personal item is free, and the carry-on is paid.

Can I share a checked bag with a family member?

You can split items between multiple bags, but each bag is associated with one passenger’s name and counts towards that passenger’s allowance. Co-branded credit-card waivers, however, typically extend to up to 4 companions on the same reservation.

What happens if my bag is overweight?

The standard 50 lb limit is firm on most US carriers. Overweight fees are typically $100–$150 for 51–70 lb and $200 for 71–100 lb. Above 100 lb the bag must usually be shipped as cargo. Buy the heavier allowance in advance if you can.

Do golf clubs and ski bags count as a regular checked bag?

On most US carriers (AA, DL, UA, Alaska, Southwest), golf clubs and ski/snowboard bags now count as a single standard checked bag, subject to the same fee. Hawaiian and JetBlue are similar. Check the airline’s sports-equipment page before you fly — bike boxes are still typically charged extra.