Carry-On Size Guide: Every Major Airline's Rules in 2026

Nothing ruins the start of a trip like having your carry-on gate-checked because it's two inches too tall. Airlines have been getting stricter about enforcing size limits, and the rules vary more than you'd think.

We compiled the current carry-on size limits for every major airline so you can travel confidently. Bookmark this page — we update it regularly.

US Domestic Airlines

| Airline | Max Size (L x W x H) | Weight Limit | Personal Item | |---------|----------------------|--------------|---------------| | American Airlines | 22" x 14" x 9" | None | 18" x 14" x 8" | | Delta Air Lines | 22" x 14" x 9" | None | 18" x 14" x 8" | | United Airlines | 22" x 14" x 9" | None | 17" x 10" x 9" | | Southwest Airlines | 24" x 16" x 10" | None | 18.5" x 13.5" x 8.5" | | JetBlue | 22" x 14" x 9" | None | 17" x 13" x 8" | | Alaska Airlines | 22" x 14" x 9" | None | 17" x 13" x 8" | | Spirit Airlines | 22" x 18" x 10" | None (paid) | 18" x 14" x 8" (free) | | Frontier Airlines | 24" x 16" x 10" | 35 lbs (paid) | 18" x 14" x 8" (free) |

Note: Spirit and Frontier charge for carry-on bags. Only personal items are free on these airlines.

International Airlines

| Airline | Max Size (L x W x H) | Weight Limit | Notes | |---------|----------------------|--------------|-------| | British Airways | 22" x 18" x 10" | 51 lbs | One of the most generous | | Lufthansa | 21.5" x 15.5" x 9" | 17.5 lbs | Strict weight enforcement | | Air France | 21.5" x 13.5" x 9.5" | 26.5 lbs | | | Emirates | 22" x 15" x 8" | 15.5 lbs | Economy weight limit | | Singapore Airlines | 22" x 15" x 8" | 15.5 lbs | | | Ryanair | 21.5" x 15.5" x 8" | 22 lbs | Priority boarding only | | ANA | 22" x 16" x 10" | 22 lbs | Domestic flights: smaller | | Qantas | 22" x 14.2" x 9" | 15.5 lbs | |

Budget Airlines (Strict Enforcement)

Budget carriers are the ones most likely to measure your bag at the gate. Here are the ones to watch:

Ryanair is notoriously strict. Their standard ticket only includes a small personal item (15.5" x 10" x 8"). A full-size carry-on requires Priority boarding upgrade.

EasyJet allows one small cabin bag (17.5" x 13.5" x 8") for free. Larger carry-ons require an upgrade.

Spirit and Frontier in the US follow the same model — personal item free, carry-on costs extra.

Key Takeaways for Packing

The magic number is 22" x 14" x 9". If your bag fits within these dimensions, you're good on almost every major airline worldwide. This is why most carry-on luggage manufacturers target this size.

Weight matters internationally. US domestic airlines generally don't weigh carry-ons. International carriers — especially European and Asian airlines — frequently do. 15-17 lbs limits are common and enforced.

Southwest is the most generous. At 24" x 16" x 10" with no weight limit and two free checked bags, Southwest remains the most bag-friendly US carrier.

Personal item sizes vary a lot. United's personal item allowance (17" x 10" x 9") is significantly smaller than American's (18" x 14" x 8"). If you're flying United, make sure your under-seat bag actually fits.

Tips for Never Getting Gate-Checked

Measure your bag at home. Include wheels, handles, and any external pockets. Airlines measure the total exterior dimensions.
Soft-sided bags have an advantage. A slightly overpacked soft bag can compress to fit a sizer. A rigid case either fits or it doesn't.
Board early. Overhead bin space is first-come, first-served. Later boarding groups often face full bins and forced gate-checking.
Use a packing cube system. Compression cubes let you fit more in less space while keeping your bag organized and compact.
Know your airline before you pack. Flying Lufthansa with their 17.5 lb limit requires a different packing strategy than Southwest with no weight limit.

Our Recommended Carry-On Bags

We're working on in-depth reviews of the best carry-on bags for every travel style. In the meantime, here are a few that consistently nail the size requirements:

Hard-Sided: Away Carry-On (21.7" x 13.7" x 9")

Fits every airline. Durable polycarbonate shell, smooth-rolling wheels, and an interior that maximizes packing efficiency.

Away Direct — $295 | Amazon — $295

Backpack: Tortuga Outbreaker 45L (22" x 14" x 9")

Max capacity at carry-on size. Suitcase-style opening with organized compartments.

Tortuga Direct — $249 | Amazon — $249

One-Bag Travel: Peak Design Travel Backpack 45L (22" x 13" x 9.5")

Photographer-friendly with expandable capacity. Modular camera cube system.

Peak Design Direct — $300 | Amazon — $295

Ultralight: Tom Bihn Aeronaut 45 (22" x 14" x 9")

Bombproof quality at minimal weight. Built to last forever.

Tom Bihn Direct — $295 | Amazon — $285

Stay tuned for our full carry-on comparison guides coming soon.

Sizes and policies were verified as of March 2026. Airlines can change their policies at any time — always check your specific airline's website before traveling.