Does the Peak Design Travel Backpack 45L fit Singapore Airlines' cabin bag?

Yes. Fits with at least 3 cm to spare on every side. It's too big for Singapore Airlines' personal item (No size published).

Fits

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Side the bag fails onPart that sticks outSizer frame

Fits

Fits with at least 3 cm to spare on every side.

BagPeak Design Travel Backpack 45L

Cabin bagSingapore Airlines

All sides added up: 112 of 115 cm

Weight7 kg limit

Packed weightkg

Empty it weighs 2 kg, leaving 5 kg for your things.

We haven't checked this bag's size against the brand yet.

See bags that fit Singapore Airlines

Singapore Airlines rules checked 2 Nov 2026. Airline's page. Sizes include wheels and handles.

Side by side

Peak Design Travel Backpack 45L against Singapore Airlines' limits. Bags can be turned, so the longest side is compared with the longest limit.

All sides added up: 112 of 115 cm.

Empty it weighs 2 kg of the 7 kg limit.

Singapore Airlines rules worth knowing

Cabin bag: No box size. Length, width and depth just have to add up to 115 cm or less.
Personal item: One small personal item.
Business, First and Suites get two 7 kg pieces.

Airlines where the Peak Design Travel Backpack 45L fits

Frontier Airlines Southwest Airlines AirAsia All airlines

Bags that fit Singapore Airlines' cabin bag

Biggest first.

Away Carry-On55.1 × 36.6 × 22.9 cmTight0.4 cm to spareBag page
Osprey Farpoint 4055.1 × 35.1 × 23.1 cmFits1.7 cm to spareBag page
American Tourister Soundbox Spinner 5555 × 40 × 20 cmTightExact fitBag page
Horizn Studios H5 Cabin Luggage55 × 40 × 20 cmTightExact fitBag page

Good to know

Will the Peak Design Travel Backpack 45L still fit Singapore Airlines when it's packed?

It should. It has 3 cm to spare on its tightest side, and a stuffed front pocket usually adds 3 to 5 cm, so don't overfill the outside pockets.

What is Singapore Airlines' cabin bag size limit?

Singapore Airlines' cabin bag limit is 115 cm when you add up length, width and depth, up to 7 kg.

Which other bags fit Singapore Airlines?

Osprey Farpoint 40 fits with room to spare. Away Carry-On, American Tourister Soundbox Spinner 55 and Horizn Studios H5 Cabin Luggage are right on the limit.