bag vs limit
2.3" to spareTopo Designs Rover Pack Mini
13.5 × 8.5 × 3.75 inEnormous margin against every limit here, and it looks like a normal bag rather than travel gear. Ten litres is a daybag though, not a travel bag.
British Airways allows a cabin bag of 56 × 45 × 25 cm — 22 × 18 × 10 inches, with no published weight limit. The under-seat item is 40 × 30 × 15 cm.
Fare class: No fare dependency. Hand-baggage-only fares get the same cabin bag and personal item — what they lose is the checked allowance.
The most generous allowance here: 56 × 45 × 25 cm is wider than the US 22 × 14 × 9 standard. BA publishes no cabin weight limit on its current pages — only that you must lift the bag unaided. It has historically published 23 kg, so treat a heavy bag with care.
Measure the outside, wheels and handles included — that’s what they measure at the gate.
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Enormous margin against every limit here, and it looks like a normal bag rather than travel gear. Ten litres is a daybag though, not a travel bag.
The anti-theft option that actually fits — slash-resistant panels, locking zips, RFID pocket, and a 13-inch laptop sleeve, all inside United’s width.
Pacsafe’s own site is JavaScript-gated, so this comes from a retailer spec rather than the brand. The 0.2 inches of width margin rests on that number.
56 × 45 × 25 cm, which is 22 × 18 × 10 inches with no published weight limit.
Yes — 40 × 30 × 15 cm, or 16 × 12 × 6 inches. It goes under the seat in front of you.
Yes. A standard American 22 × 14 × 9 inch carry-on clears British Airways’ 22 × 18 × 10 inch limit.
No fare dependency. Hand-baggage-only fares get the same cabin bag and personal item — what they lose is the checked allowance.
Of the bags we track, 13 of 16 carry-ons fit the cabin limit and 2 of 25 personal items fit the under-seat limit.
Manufacturers publish dimensions inconsistently, and a “20-inch” spinner is almost never 20 inches once you count the wheels. Where a brand states dimensions including wheels and handles, that’s the number we use. Where it only publishes the case, we say so on the card. Airlines measure the outside of your bag — wheels, handles, straps and all. Anything marked borderline is down to the gate agent, and remember that a soft bag squashes into a sizer while a hard shell won’t.
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Limits verified August 2026 against each carrier’s published policy. Airlines change these without notice — always confirm before you fly. Spirit Airlines ceased operations on 2 May 2026 and is no longer listed.
Airline Bag Size Checker v1.0.15 · last updated 2026-08-12