Cabin baggage guide - Underseater

Are you flying soon and taking an underseater with you? The rules for cabin baggage vary per airline. For instance, the maximum size, maximum weight, and number of allowed items can vary by airline. Moreover, an underseater is not included in the ticket as standard with every airline.

To ensure you are well prepared for your trip, we have compiled a clear overview of the most important rules for cabin baggage per airline. In the overview below, you can see the maximum dimensions and weight allowed of an underseater for each airline, and whether you can take it with you for free. This way, you know exactly what requirements your underseater needs to meet and avoid surprises at the airport.

Last checked on August 14, 2026.

Airline

Underseater

KLM

Max. 40 x 30 x 15 cm

Max. 12 kg together with hand luggage

Free of charge

Transavia

Max. 40 x 30 x 20 cm

Max. 10 kg together with hand luggage

Free of charge

easyJet

Max. 45 x 36 x 20 cm

Max. 15 kg together with hand luggage

Free of charge

Delta Air Lines

Fits under the seat

No max. weight

Free of charge

Vueling

Max. 40 x 30 x 20 cm

No max. weight

Free of charge

TUI fly

Max. 40 x 30 x 20 cm

No max. weight

Free of charge

Air France

Max. 40 x 30 x 15 cm

Max. 12 kg together with hand luggage

Free of charge

British Airways

Max. 40 x 30 x 15 cm

Max. 23 kg

Free of charge

Scandinavian Airlines (SAS)

Max. 40 x 30 x 15 cm

Max. 18 L

Free of charge

Emirates

Not permitted as standard