The baggage allowance comparison shows carry-on limits, checked bag fees, and oversize/overweight policies for major airlines. Policies change frequently — always confirm directly with the airline before travel.
— Baggage Policy
Avoiding Baggage Fees
Baggage fees are one of the biggest hidden costs of air travel. On a round trip with two passengers, two checked bags can add $140-200 to your ticket price on US carriers. Understanding the rules before you book can save significantly.
Credit cards and elite status
Co-branded airline credit cards typically waive the first checked bag for the cardholder and companions on the same reservation. United, Delta, and American all offer cards with this benefit — the annual fee is often recovered in 2-3 round trips if you check bags. Elite status at the Silver level or above typically includes 1-2 free checked bags.
Basic economy: read the fine print
Basic economy fares at American, Delta, and United restrict carry-on luggage to a personal item only (under the seat). If you bring a full-size carry-on, you'll be forced to gate-check it and pay the checked bag fee — often $35-50. Budget the bag fee into your comparison when booking basic economy vs standard economy.
Frequently Asked Questions
How much does a checked bag cost on US airlines?
On American, Delta, and United, the first checked bag costs $35 domestically and the second costs $45. Southwest is the exception — 2 bags fly free. Budget carriers like Spirit charge $45-99+ for a first bag.
What size can my carry-on be?
Most major US airlines allow carry-ons up to 22×14×9 inches (56×36×23 cm). European budget carriers like Ryanair are much more restrictive and enforce size limits strictly. Basic economy tickets often only allow a personal item under the seat.
How can I avoid baggage fees?
Use a co-branded airline credit card (usually waives 1st bag), fly Southwest (2 bags free), achieve elite status, or pack only carry-on. Pre-booking bags online is always cheaper than paying at the airport.
What's the overweight bag fee?
For bags 51-70 lbs (23-32 kg), most US carriers charge $100. For 71-100 lbs (32-45 kg), fees reach $200. Airlines refuse bags over 100 lbs as cargo safety rules prohibit them.
Is this comparison current?
This guide reflects recent policies but airlines change fees frequently. Always verify current fees on the airline's official website before travel. Airport check-in fees are typically 2-3x higher than fees added during online booking.