Luggage size restrictions:What are the standard luggage size restrictions for carry-on and checked bags?

Q: What are the standard luggage size restrictions for carry-on and checked bags?

A: Luggage size restrictions vary by airline, but standard carry-on dimensions are typically 22 x 14 x 9 inches (including wheels and handles). Most major airlines like American, Delta, and United allow one carry-on and one personal item. Personal items usually max out at 18 x 14 x 8 inches. For checked bags, the common size limit is 62 linear inches (length + width + height), with a weight cap of 50 pounds for economy class. First or business class may allow up to 70 pounds. Always measure your bag fully packed, as expandable luggage can exceed limits when overstuffed. Oversized or overweight bags incur fees ranging from $75 to $200 per bag. Budget airlines like Spirit and Frontier often have stricter limits, sometimes charging for any carry-on beyond a small personal item. Check your specific airline's website before flying, as policies change frequently. When in doubt, opt for a soft-sided bag that can compress slightly if needed.

Q: How do international and domestic luggage size restrictions differ?

A: Domestic flights within the U.S. generally follow the 62-linear-inch rule for checked bags, but international flights often have different allowances. For example, many international carriers on transatlantic routes allow one free checked bag up to 50 pounds and 62 linear inches, while some Asian or Middle Eastern airlines permit 2 pieces at 70 pounds each for economy. Carry-on sizes are more uniform globally: most international airlines stick to 21-22 inches in height. However, weight restrictions for carry-ons are stricter abroad—many European and Asian airlines cap carry-ons at 15-22 pounds, whereas U.S. domestic carriers rarely weigh carry-ons. Also, linear inch limits can differ: some international flights allow 115 linear inches for checked bags in business class. If you're flying on a codeshare, the operating carrier's rules apply. Always check both the ticketing and operating airline. For multi-leg international trips, the most restrictive leg usually governs the entire journey.

Q: What happens if my luggage exceeds the size restrictions?

A: If your luggage exceeds carry-on size restrictions, the airline will require you to check it at the gate, often charging a gate-check fee of $25 to $75 (higher than checking at the counter). If your checked bag exceeds the 62-linear-inch limit, it's considered oversized. Oversized bag fees typically start at $75 to $100 per bag on domestic flights and can exceed $200 on international routes. Additionally, if your bag is over 50 pounds, overweight fees apply—usually $100 or more. Some airlines combine overweight and oversized fees, so a single bag could cost $200-$300 extra. In extreme cases (e.g., over 100 pounds or 115 linear inches), the airline may refuse to transport it or require air freight. To avoid surprises, weigh and measure your bags at home. Use a luggage scale and a tape measure. If you're close to the limit, consider shipping items ahead or wearing bulky clothing on the plane. Budget airlines are especially strict and may deny boarding if you don't pay fees upfront.

Words of experience

Common scenarios of "Luggage size restrictions"

【Traveler】 Hi, I'm flying to Tokyo next week and I'm worried about my luggage size. Can you tell me the restrictions?

【Airline Agent】 Sure! For most international flights, the standard checked baggage size limit is 62 linear inches (158 cm), which is length + width + height. Carry-on is usually 22 x 14 x 9 inches (56 x 36 x 23 cm). Which airline are you flying with?

【Traveler】 I'm flying with Delta. Do they have the same restrictions?

【Airline Agent】 Delta's carry-on size is 22 x 14 x 9 inches, same as the standard. Checked bags can be up to 62 linear inches. However, if you're flying in Basic Economy, you might have different allowances. What fare class did you book?

【Traveler】 I booked Basic Economy. Does that mean I can't bring a carry-on?

【Airline Agent】 For Delta Basic Economy, you're allowed one personal item that fits under the seat (like a purse or small backpack), but no full-sized carry-on. You can check a bag for a fee. The personal item size limit is usually 18 x 14 x 8 inches.

【Traveler】 Oh, I didn't know that. What about the checked bag size? Is it the same 62 linear inches?

【Airline Agent】 Yes, for checked bags, the maximum is 62 linear inches. But note that if your bag exceeds 62 inches, you'll be charged an overweight or oversize fee. Also, there's a weight limit of 50 lbs (23 kg) for standard checked bags.

【Traveler】 What if my bag is slightly over 62 inches? Like 63 inches?

【Airline Agent】 Typically, there's no grace period. If it's over 62 linear inches, it's considered oversize and you'll be charged an oversize fee, which can be around $100 or more depending on the route. It's best to measure carefully.

【Traveler】 How do I measure my bag correctly? Do I include wheels and handles?

【Airline Agent】 Yes, you must include wheels, handles, and any external pockets. Measure the length, width, and height at the widest points, then add them together. For example, a bag that is 28 x 18 x 12 inches would be 58 linear inches.

【Traveler】 Okay, so my bag is 30 x 20 x 12 inches. That's 62 inches exactly. Is that okay?

【Airline Agent】 Yes, exactly 62 inches is within the limit. But remember, if it's a soft-sided bag, it might expand when packed, so make sure it doesn't exceed 62 when full. Also, check the weight.

【Traveler】 What about carry-on for international flights? Is the size different?

【Airline Agent】 For Delta international flights, carry-on size is the same 22 x 14 x 9 inches. But some airlines have different limits, so always double-check with your specific airline. Also, there might be weight restrictions for carry-on, usually around 15-22 lbs.

【Traveler】 Thanks! One more thing: if I have a connecting flight with another airline, do I need to follow their rules too?

【Airline Agent】 Yes, if your ticket includes multiple airlines, the rules of the operating carrier for each segment apply. It's a good idea to check the restrictions for all airlines on your itinerary. The strictest rule will apply.

【Traveler】 That's helpful. So I should check both Delta and the other airline's website.

【Airline Agent】 Exactly. And if you're unsure, you can always call customer service. They can confirm the size and weight limits for your specific flights. Have a great trip to Tokyo!