Quick Answer

The standard carry-on size is 22 x 14 x 9 inches (56 x 36 x 23 cm). Most full-service airlines allow 7–10 kg. Budget carriers often have stricter limits (typically 7 kg) and may charge for overhead bin access.

Size limits vary significantly between airlines. US carriers like Delta, United, and American all use the 22x14x9 standard with no weight limit for domestic flights. European budget carriers like Ryanair and EasyJet have smaller dimensions and strict weight enforcement.

Carry-On Size Comparison Table

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Pro Tips for Carry-On Travel

Measure Including Wheels

Always measure your bag with wheels extended and handles up. Airlines measure total dimensions including all protrusions. A bag that is 21 inches in body length becomes 22+ inches with wheels.

Weigh Before You Leave

Budget airlines strictly enforce weight limits. Use a luggage scale at home to avoid surprise fees at the gate. Ryanair, for example, charges €25–€50 for overweight cabin bags.

Soft-Sided Bags Are Flexible

A soft-sided bag can compress to fit in overhead bins and sizers. Hard-shell cases are less forgiving with strict size limits. If you frequently fly budget carriers, a soft bag gives you more margin.

Check Connecting Flights

If connecting on a different airline, your carry-on must meet the stricter of the two airlines’ limits. A bag that fits Delta’s 22x14x9 standard may not fit Ryanair’s 21.5x15.5x7.8 limit.

Frequently Asked Questions

What is the standard carry-on bag size for most airlines?

The most common carry-on size limit is 22 x 14 x 9 inches (56 x 36 x 23 cm) including handles and wheels. This is the standard for most US and international airlines. However, budget carriers like Ryanair and Spirit have smaller limits, so always check before you fly.

Can I bring a personal item in addition to my carry-on?

Most airlines allow one personal item (purse, laptop bag, small backpack) in addition to your carry-on bag. The personal item must fit under the seat in front of you. Budget airlines like Spirit and Frontier charge extra for a full-size carry-on but include a personal item for free.

What happens if my carry-on is too big?

If your carry-on exceeds the airline’s size limits, you’ll be asked to gate-check it. This is usually free on full-service carriers but can cost $30–$65 on budget airlines if you haven’t pre-paid for a carry-on. Some airlines have sizers at the gate to enforce limits.

Do carry-on size limits include wheels and handles?

Yes, for most airlines the size limit includes wheels, handles, and any external pockets. When measuring your bag, extend the handle and include the wheels in your measurement. Some airlines specify “including protrusions” in their policy.

Which airlines have the most generous carry-on allowance?

Emirates, Qatar Airways, and Singapore Airlines offer the most generous carry-on policies with larger size limits and higher weight allowances (up to 7–10 kg). JetBlue is the most generous US carrier, allowing carry-ons on all fare types without extra charge.

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Frequently Asked Questions

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