KLChecked 20 Oct 2026 against klm.com

KLM cabin bag size 2026

On KLM’s cheapest fare (Basic) you can bring one free under-seat bag up to 40 × 30 × 15 cm. A cabin bag up to 55 × 35 × 25 cm and 12 kg isn’t included on Basic — buy 1 Hand Baggage Option up to 4 hours before departure. It comes with Light, Standard, Flex, Premium Comfort and Business Class.

Check my bag against KLM

Free under-seat bag: 40 × 30 × 15 cmOn Basic
Overhead cabin bag: 55 × 35 × 25 cmup to 12 kgNot on the cheapest fare

Check your bag against KLM’s limits

Airline

Which bag?

Under-seat bagfits under the seat in frontIncluded40 × 30 × 15 cmCabin baggoes in the overhead lockerPaid add-on55 × 35 × 25 cm· 12 kg

Your bag’s size

Measure the outside, including wheels, handles and pockets.

Height

Width

Depth

Weight (optional)

KLM cabin bags by fare

What each ticket type includes, as published by KLM.

KLM cabin baggage allowance by fare
Fare	Under-seat bag	Cabin bag
Basic Only sold on some European routes from Amsterdam Bag option on KL flights between Amsterdam and Helsinki, Stockholm, Dublin or Prague Also on KL flights between Amsterdam and Munich, Vienna, Turin, Florence or Athens Economy only. Flying Blue Gold, Platinum and Ultimate members get 1 cabin bag free A bought cabin bag may go in the hold on full flights No checked baggage; 12 kg combined cabin allowance	Included 40 × 30 × 15 cm Under the seat in front, or overhead near an emergency exit. 12 kg max combined with any cabin bag you buy.	Paid add-on 55 × 35 × 25 cm · 12 kg Buy 1 Hand Baggage Option up to 4 hours before departure Buy online (booking, My Trip, check-in) or via the Customer Contact Center. Price varies by destination.
Light Combined cabin allowance 12 kg No checked baggage included	Included 40 × 30 × 15 cm Under the seat in front of you; counts towards the 12 kg combined limit.	Included 55 × 35 × 25 cm · 12 kg Included on European and intercontinental Light tickets. 12 kg combined with your under-seat bag.
Standard Combined cabin allowance 12 kg 1 checked bag (23 kg) included	Included 40 × 30 × 15 cm Under the seat in front of you; counts towards the 12 kg combined limit.	Included 55 × 35 × 25 cm · 12 kg 12 kg combined with your under-seat bag.
Flex Combined cabin allowance 12 kg 1 checked bag (23 kg) included	Included 40 × 30 × 15 cm Under the seat in front of you; counts towards the 12 kg combined limit.	Included 55 × 35 × 25 cm · 12 kg 12 kg combined with your under-seat bag.
Premium Comfort Intercontinental only Flying from the US, TSA limits you to 1 cabin bag + 1 under-seat bag	Included 40 × 30 × 15 cm Under the seat in front of you.	Included 55 × 35 × 25 cm · 12 kg Two cabin bags.
Business Class Flying from the US, TSA limits you to 1 cabin bag + 1 under-seat bag	Included 40 × 30 × 15 cm Under the seat in front of you.	Included 55 × 35 × 25 cm · 18 kg Two cabin bags; 18 kg combined with your under-seat bag.

KLM measures the whole bag, including wheels, handles and pockets.

If your bag is too big at the gate

If your cabin bag is too big or too heavy, you'll have to check it in for a fee.

It’s almost always cheaper to add the right bag when you book or online before you fly.

Other KLM cabin rules worth knowing

On full flights KLM may check your cabin bag in free at the gate or desk, so keep medicines and essentials in your under-seat bag.
Flying from the US, TSA rules limit everyone to 1 cabin bag + 1 under-seat bag, in any class.
Tax-free purchases are allowed; if you have a transfer, have them sealed in the shop or they may be confiscated at security.
A baby on your lap (0–23 months) can bring 1 extra item up to 55 × 35 × 25 cm and 12 kg.
Cabin crew can't help lift bags into the overhead lockers, except in certain cases.
Multi-destination Economy bookings on klm.com are only offered as a Light ticket.

Power banks on KLM

KLM allows up to 2 power banks in hand luggage; 100–160 Wh needs permission first and over 160 Wh is never allowed. You can't use or charge them on board.

Power-bank rules and Wh calculator

Liquids depend on the airport

The airline doesn’t set the liquids limit — the departure airport’s security does. Some now allow up to 2 litres.

Liquids rules by airport

KLM cabin bag questions

What size is KLM’s free under-seat bag?

40 × 30 × 15 cm on the Basic fare. It must fit under the seat in front of you.

What size cabin bag can I take on KLM?

Up to 55 × 35 × 25 cm and 12 kg. It’s included with Light, Standard, Flex, Premium Comfort and Business Class.

Do KLM’s size limits include wheels and handles?

Yes. The limits are for the whole bag, including wheels, handles and side pockets.

What happens if my bag is too big for KLM?

If your cabin bag is too big or too heavy, you'll have to check it in for a fee.

Can I take a power bank on KLM?