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.
Air France allows a cabin bag of 55 × 35 × 25 cm — 21.7 × 13.8 × 9.9 inches — and weighs it at 12 kg (26.5 lb), which most US carriers never do. The under-seat item is 40 × 30 × 15 cm.
Fare class: Economy Basic may carry no cabin bag at all depending on the fare picked; other Economy tiers include one as standard.
The 12 kg is combined across your cabin bag and your small bag, so moving weight into your backpack does not help. The 35 cm width is 1 cm under the US standard — enough to fail a sizer.
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.
55 × 35 × 25 cm, which is 21.7 × 13.8 × 9.9 inches, up to 12 kg (26.5 lb).
Yes — 40 × 30 × 15 cm, or 16 × 12 × 6 inches. It goes under the seat in front of you.
No — it is 0.3 inches over. Air France allows 21.7 × 13.8 × 9.9 inches, and the standard US 22 × 14 × 9 does not fit inside that.
Economy Basic may carry no cabin bag at all depending on the fare picked; other Economy tiers include one as standard.
Of the bags we track, 6 of 16 carry-ons fit the cabin limit and 2 of 25 personal items fit the under-seat limit. All of them are under the weight limit empty.
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