What is the standard weight limit for a checked bag?

For most US domestic flights, the standard checked bag weight limit is 50 lbs (23 kg) in economy class. International flights on many carriers allow up to 23 kg (50 lbs) in economy and 32 kg (70 lbs) in business or first class. Any bag over the standard limit incurs an overweight fee on top of any standard checked bag fee.

How much does Delta charge for an overweight checked bag?

Delta charges $100 for bags weighing between 51 and 70 lbs (23–32 kg) and $200 for bags weighing between 71 and 100 lbs (32–45 kg) on domestic US routes. These fees are in addition to the standard checked bag fee. Delta will not accept bags over 100 lbs (45 kg).

What happens if my bag is over 100 lbs at the airport?

Most airlines refuse to accept checked bags over 100 lbs (45 kg) as standard checked luggage. You would need to ship the item as cargo through the airline's cargo service, or use a third-party freight or luggage shipping service. Some airlines accept bags up to 100 lbs with a very high overweight fee, but policies vary — always check directly with your carrier before arriving at the airport.

What is the cheapest way to deal with an overweight bag?

The cheapest options are: weigh your bag at home and redistribute weight to a second bag (if you are allowed two checked bags), wear your heaviest items onto the plane, or ship the excess via USPS, FedEx, or a luggage forwarding service like Luggage Forward or Luggage Free. Paying the overweight fee at the airport is almost always the most expensive option.

Do international flights have different weight limits?

Yes. International flights frequently use a weight-based system with limits of 23 kg (50 lbs) per bag in economy and 32 kg (70 lbs) in business class on many carriers. Some carriers — particularly on transatlantic and transpacific routes — use a piece-based system with the same 23 kg per bag limit. Business and first class passengers often have a higher per-bag weight limit. Always check your specific airline and route.

Overweight Bag Fees 2026: All Major Airlines Compared

The Standard Weight Limit and Why It Matters

Walk up to almost any US airline check-in counter with a bag that weighs more than 50 lbs (23 kg) and you will pay an overweight fee before the bag leaves your hands. The 50 lb / 23 kg limit has been the industry standard for domestic US flights for decades, and it is enforced at the scale — not estimated.

Overweight bag fees are charged in addition to standard checked bag fees. If you are already paying $35 to check a first bag, an overweight fee of $100 on top of that brings your total to $135 for a single bag on a domestic flight. On a round trip, that is $270 in checked bag costs for one overpacked suitcase.

Understanding the exact tiers at each airline — and the strategies to stay under the limit — is worth real money.

How Overweight Fee Tiers Work

Most US airlines use two overweight tiers:

Tier 1: 51–70 lbs (23–32 kg)

The most common overweight scenario. A bag that was packed at 48 lbs at home often arrives at 52 lbs after a souvenir purchase or the addition of a few items. Fees in this tier range from $75 to $150 depending on the carrier.

Tier 2: 71–100 lbs (32–45 kg)

At this weight, the bag is approaching the threshold where airline handlers and liability policies become a concern. Fees jump significantly — typically $125 to $200.

Over 100 lbs (45 kg)

Most airlines will not accept a bag above 100 lbs (45 kg) as standard checked luggage. If a bag exceeds this limit, you will typically need to:

Split the contents between two bags (if a second bag is permitted and fees are lower than the overweight charge)
Ship the item as air cargo through the airline's cargo arm
Use a third-party luggage shipping service

Overweight Bag Fee Comparison: US and International Airlines

Airline	Standard Limit	51–70 lbs fee	71–100 lbs fee	Max Weight
Delta	50 lbs / 23 kg	$100	$200	100 lbs / 45 kg
United	50 lbs / 23 kg	$100	$200	100 lbs / 45 kg
American Airlines	50 lbs / 23 kg	$100	$200	100 lbs / 45 kg
Southwest	50 lbs / 23 kg	$75	$125	100 lbs / 45 kg
JetBlue	50 lbs / 23 kg	$150	$200	100 lbs / 45 kg
Alaska Airlines	50 lbs / 23 kg	$100	$200	100 lbs / 45 kg
Spirit Airlines	40 lbs / 18 kg	$150	Varies	Varies
Frontier Airlines	50 lbs / 23 kg	$75+	Additional fees	100 lbs / 45 kg
British Airways (intl)	23 kg / 50 lbs	£65	£65 (up to 32 kg)	32 kg / 70 lbs
Lufthansa (long-haul)	23 kg / 50 lbs	€100+	Varies by route	32 kg / 70 lbs

Important notes on this table:

Fees shown are for economy class on standard routes. Business and first class passengers typically have higher weight limits and different fee structures.
Spirit Airlines uses a standard limit of 40 lbs (18 kg) on many fares — lower than most US carriers — making overweight charges more likely.
Frontier fees vary by route and fare bundle. Confirm current fees at booking.
British Airways and Lufthansa international overweight fees apply on a per-bag basis and are subject to route-specific variations.

Domestic US Airlines: Detailed Breakdown

Delta Air Lines

Delta's overweight policy is consistent across domestic US routes. The standard limit is 50 lbs (23 kg). Bags over 70 lbs (32 kg) incur a $200 overweight fee in addition to the standard bag fee. Delta Medallion elite members and passengers with certain Delta SkyMiles credit cards may receive a waiver on standard bag fees, but overweight charges apply regardless of status.

Delta does not accept bags weighing more than 100 lbs (45 kg) as checked luggage on most routes.

United Airlines

United's overweight fee schedule matches Delta at $100 for bags in the 51–70 lb range and $200 for 71–100 lb bags. United MileagePlus Premier members at Silver level and above receive their first checked bag free, but this does not waive overweight fees.

United's policy on bags over 100 lbs is to refuse them at standard check-in. Contact United Cargo if you need to ship a very heavy item.

American Airlines

American charges $100 for overweight bags between 51 and 70 lbs, and $200 for bags between 71 and 100 lbs. These charges apply on domestic US routes. AAdvantage elite status members receive complimentary checked bags but not relief from overweight fees.

On some international routes, American allows bags up to 32 kg (70 lbs) in economy before overweight charges apply — check your specific itinerary.

Southwest Airlines

Southwest historically offered one of the most traveler-friendly baggage policies, including two free checked bags per passenger. Their overweight fees are lower than the legacy carriers at $75 for bags in the 51–70 lb range and $125 for 71–100 lb bags. Check Southwest's current policy for any changes announced in 2025/26.

JetBlue Airways

JetBlue's overweight fees are among the highest in the US domestic market at $150 for the 51–70 lb tier and $200 for 71–100 lbs. JetBlue Mosaic elite members receive waived bag fees but standard overweight charges still apply.

Spirit Airlines

Spirit uses a standard weight limit of 40 lbs (18 kg) on many fare classes — a full 10 lbs lower than most competitors. This catches many travelers off guard. An overweight charge of $150 applies to bags over 40 lbs up to 70 lbs. Charges above 70 lbs vary and can be substantial.

Given Spirit's low base fares and high ancillary fees, a single overweight bag can quickly exceed the cost of the ticket itself on short routes. Weigh your bag carefully before any Spirit flight.

Alaska Airlines

Alaska's overweight fee structure is $100 for bags in the 51–70 lb range and $200 for 71–100 lb bags, consistent with Delta and United. Alaska Mileage Plan MVP, MVP Gold, and MVP Gold 75K elite members receive enhanced checked bag allowances but standard overweight fees still apply.

International Flights: Different Rules Apply

International flights frequently operate on a different weight system than US domestic routes, and the specifics vary dramatically by carrier, route, and class of service.

Economy Class

Most international carriers set a per-bag weight limit of 23 kg (50 lbs) in economy class, which matches US domestic standards. However, some carriers — particularly in Asia and the Middle East — allow a higher per-bag limit of up to 30 kg in economy on certain routes.

Business and First Class

Business class passengers on international routes typically receive a higher weight limit per bag, often 32 kg (70 lbs). Some first class passengers receive a 32 kg limit as well, though on premium carriers the standard may be higher.

European Low-Cost Carriers

On short-haul intra-European routes with Ryanair, easyJet, Wizz Air, and Vueling, the checked bag limits tend to be lower: 20 kg or 23 kg per bag depending on the carrier and fare. Overweight fees on these carriers are applied in 5 kg or 10 kg increments and can reach €10–€25 per kg over the limit at the airport.

British Airways (International)

British Airways charges £65 per overweight bag for luggage between 23 kg (50 lbs) and 32 kg (70 lbs) on international routes. Bags above 32 kg are generally not accepted as standard checked luggage and must be shipped as cargo.

Lufthansa (Long-Haul)

Lufthansa charges over €100 for overweight bags on long-haul international routes, with fees varying by route and booking class. Like British Airways, Lufthansa's maximum accepted weight is 32 kg (70 lbs) for standard checked luggage.

How to Avoid Overweight Checked Bag Fees

Weigh Your Bag at Home

A luggage scale costs $10–$15 and pays for itself on the first trip where it prevents a $100 overweight fee. Weigh your bag packed, before you leave for the airport. If you are close to the limit, remove items until you have a buffer of 2–3 lbs to account for any differences between home and airport scales.

Redistribute Into Two Bags

If your airline allows two checked bags (Southwest historically offered this, and many fares include two bags), it is often cheaper to split an overweight bag into two standard-weight bags than to pay the overweight fee. A $30 soft-sided duffle bought at a pharmacy before travel can save $100 in fees.

Wear Your Heaviest Items

Boots, jeans, and heavy sweaters or jackets can be worn onto the plane to bring a borderline bag under the limit. A heavy pair of boots worn instead of packed can save 3–4 lbs instantly. You can change once on board if you want.

Ship Your Luggage Ahead

Luggage forwarding services like Luggage Forward and Luggage Free pick up bags at your home or hotel and deliver them to your destination hotel or home — often at a cost competitive with airline overweight fees. FedEx and UPS ground shipping can be cost-effective for heavier items sent within the US. USPS Priority Mail and Priority Mail Express can be surprisingly affordable for packages up to 70 lbs shipped domestically.

The calculation is simple: if an airline's overweight fee is $100 per leg and a shipping service costs $60 door to door, shipping saves money and eliminates the hassle of checking a bag entirely.

Ship Sports Equipment and Specialty Items Separately

Golf clubs, skis, surfboards, and similar sports equipment are heavy and bulky. Many sporting goods rental operations at destinations offer rental rates that, over a week-long trip, compete with the cost of checked and overweight fees on your own equipment. Compare the total cost of bringing equipment versus renting it at your destination.

The $10 Investment That Pays for Itself Repeatedly

A small digital luggage scale is one of the highest-ROI travel accessories you can own. Clip it to the handle of your packed bag, lift, and read the weight. At $10–$15 from any online retailer or department store, a single avoided overweight fee represents 7–10x the purchase price.

Overweight fees are one of travel's most avoidable costs — unlike airfare fluctuations or hotel pricing, the weight of your bag is entirely within your control before you leave home.