Standard checked baggage size limits across major carriers
Most U.S. airlines allow checked bags up to 62 inches when you add the length, width, and height together. That measurement—called the linear dimension or sum of dimensions—is the standard across American, Delta, United, Southwest, and most others. A typical large suitcase that fits this limit is roughly 29 inches long, 20 inches wide, and 13 inches deep.
Weight matters as much as size. Nearly every airline includes a 50-pound limit for checked bags, though some budget carriers charge extra if you go over. A few airlines, including some international carriers, set the limit at 70 pounds. If your bag is within the 62-inch dimension but weighs more than 50 pounds, the airline will still charge an overweight fee or refuse it.
International flights sometimes have different rules. Airlines flying to Europe, Asia, or other regions may allow larger bags—some permit up to 32 inches long—but others are stricter. Always check your specific airline's website before packing, because the carrier matters more than the destination.
Key Takeaways
- The 62-inch rule (length plus width plus height) is standard on most U.S. airlines, and a typical large suitcase measuring 29 by 20 by 13 inches fits within it.
- Weight limits of 50 pounds are standard on major carriers; bags that exceed this will incur fees or be rejected even if they meet size requirements.
- Budget airlines and some international carriers have different size and weight rules, so you must check your airline's policy before packing.
- Soft-sided bags can compress slightly to fit overhead bins, but checked bags are measured at their full packed size.
How airlines measure your bag
Airlines measure checked luggage by adding the three dimensions together: length plus width plus height. They do not measure the bag when it is empty or partially packed. The measurement is taken when your bag is fully packed and sitting flat on a scale or measurement device at check-in.
If your bag is soft-sided and compressible, the airline will measure it at its expanded size when full. Hard-sided luggage is straightforward—the dimensions are fixed. Some airlines use a physical frame or box at the counter to check whether a bag fits; if it does not fit in the frame, it will be rejected or charged as oversized.
Oversized bag fees and what triggers them
If your checked bag exceeds 62 inches in total dimension or weighs more than 50 pounds, most airlines charge an oversized or overweight fee. These fees range from $50 to $200 depending on the carrier and how much you exceed the limit. Some airlines charge per inch over the limit; others charge a flat fee for any overage.
A few airlines refuse oversized bags altogether and will not check them at any price. This is more common on budget carriers and some regional airlines. If you arrive at the counter with a bag that is too large, you may have to pay to ship it separately, check it on a later flight, or leave items behind.
Second checked bags often have the same size and weight limits as the first. Most airlines charge $35 to $50 for a second bag, plus any oversized fees if that bag also exceeds the standard dimensions.
Luggage types and how they fit the standard
A 29-by-20-by-13-inch suitcase is the most common large checked bag size and fits the 62-inch standard with room to spare. Duffel bags and soft-sided luggage can be harder to measure because they compress and shift. When packed full, a duffel that measures 30 by 18 by 14 inches will total 62 inches and is at the limit.
Garment bags, which hang rather than roll, are usually measured as a folded rectangle. A typical garment bag might be 24 by 24 by 5 inches when folded, which totals only 53 inches and is well within limits. Hard-sided spinner luggage is the easiest to measure because the dimensions do not change.
Differences between checked and carry-on size limits
Checked bags have much more generous size limits than carry-on bags. A carry-on bag is typically limited to 22 by 14 by 9 inches (totaling 45 inches), which is noticeably smaller than the 62-inch checked limit. This is why travelers often pack heavier or bulkier items in checked luggage and reserve carry-on space for valuables and essentials.
Some airlines are stricter about carry-on dimensions than others, and gate agents sometimes enforce the limit more strictly on crowded flights. Checked bags, by contrast, are measured at the counter before you board, so there is no surprise at the gate.
What happens if your bag is too large
If you arrive at check-in with a bag that exceeds 62 inches or 50 pounds, the agent will measure and weigh it. If it is over, you will be offered a few options: pay the oversized or overweight fee, remove items and repack into a smaller bag or carry-on, or ship the bag separately at your own cost.
Some travelers try to avoid fees by moving items to a second bag, but airlines count all checked bags toward your baggage allowance. If you are already at your limit for free checked bags, adding a second one will cost you regardless of size.
On international flights, the agent may refuse an oversized bag entirely if the airline's policy does not permit them at any price. This is rare on major carriers but common on smaller or budget airlines.
Budget airlines and their baggage rules
Low-cost carriers like Spirit and Frontier have stricter baggage policies than full-service airlines. Spirit allows checked bags up to 62 inches and 40 pounds on the first bag, but charges $35 to $45 for that first checked bag. A second checked bag costs $50 to $70 and must also meet the size and weight limits.
Frontier's rules are similar: 62 inches and 50 pounds for the first checked bag, with a fee of $30 to $40. Both airlines charge extra for oversized bags. If you are flying a budget carrier, factor in baggage fees when comparing ticket prices, because they can add significantly to the total cost.
Frequently Asked Questions
Can I check a bag that is 65 inches if I pay a fee?
Most airlines will charge an oversized fee for bags between 62 and 80 inches, typically $50 to $100. However, some airlines refuse bags over 80 inches entirely. Check your airline's policy before packing, because a few carriers do not allow oversized bags at any price.
Does a bag with wheels count toward the dimension limit?
Yes. The wheels, handles, and any protruding parts are included in the measurement. A suitcase with wheels that measures 30 inches long includes the wheel assembly in that measurement.
What if my bag is soft-sided and compresses when packed?
The airline measures your bag when it is fully packed and at its expanded size. Soft-sided bags are measured at their full dimension, not compressed. If your packed duffel expands to 65 inches, it will be charged as oversized even though it could compress slightly.
Are international flights different for checked bag size?
Some international airlines allow larger checked bags—up to 32 inches long—but others are stricter than U.S. carriers. Always check your specific airline's baggage policy before booking, because rules vary widely by carrier and destination.
Do I need to buy luggage that is exactly 62 inches, or can it be smaller?
Smaller is fine. A bag that is 55 or 58 inches will have no problems. The 62-inch limit is a maximum, not a target. Many travelers use bags in the 55 to 60-inch range to leave room for packing without hitting the limit.