Will This Bag Fit
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40 × 30 × 15 cm under-seat bag: who uses it, and bags that fit

40 × 30 × 15 cm is 15.7 × 11.8 × 5.9 in, about 18 litres. It's the exact under-seat bag limit on British Airways (personal item), Lufthansa (personal item), Air France (personal item), Icelandair (personal item), KLM (personal item), Virgin Atlantic (personal item), Turkish Airlines (personal item), Cathay Pacific (personal item), Iberia (personal item), SAS Scandinavian Airlines (personal item), Korean Air (personal item), TAP Air Portugal (personal item), ITA Airways (personal item), SWISS (personal item), Finnair (personal item), Condor (personal item), Austrian Airlines (personal item), Air Europa (personal item), French bee (personal item), China Airlines (personal item), Pegasus Airlines (personal item), Vietnam Airlines (personal item), SKY express (personal item), Brussels Airlines (personal item), Air Dolomiti (personal item), airBaltic (personal item), Royal Air Maroc (personal item), Kenya Airways (personal item), LEVEL (personal item), Discover Airlines (personal item), Aerolíneas Argentinas (personal item), Iberia Express (personal item), Widerøe (personal item), Edelweiss Air (personal item), Jin Air (personal item), Smartwings (personal item), T'way Air (personal item), Air Caraïbes (personal item), Enter Air (personal item), Marabu Airlines (personal item) and Norse Atlantic Airways (personal item).

A bag "fits" here when it has at least 1 cm (0.4 in) to spare on every side, turned whichever way works. 19 of the bags we track do; another 38 are within a centimeter.

Check your bag against 40 × 30 × 15 cm

Bags that fit 40 × 30 × 15 cm

Tote (6)

Personal-item bag (13)

Other common sizes

Airline limits checked 5 October 2026; bag sizes are each brand's published dimensions. Airline staff have the final say at the gate.