GateSizer

Does the Peak Design Travel Backpack 45L fit Jetstar's cabin bag?

Yes, just. Exactly the limit on at least one side. A bulging pocket would push it over. It's too big for Jetstar's personal item (No size published).

Tight fit

Flying with
56 × 36 × 23 cm, 7 kg
Checking
56 × 33 × 23 cm, backpack
Units
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Side the bag fails onPart that sticks outSizer frame

Tight fit

Exactly the limit on at least one side. A bulging pocket would push it over.

BagPeak Design Travel Backpack 45L
Cabin bagJetstar
Length
56of 56 cmExact fit
Width
33of 36 cm3 cm spare
Depth
23of 23 cmExact fit
Weight7 kg limit, shared

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

What you can do

  • Pack it before you measure. A full pocket can add 3 to 5 cm.
  • Fits 4 other airlines, including Singapore Airlines and Frontier Airlines. See all

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

See bags that fit Jetstar

Jetstar rules checked 2 Nov 2026. Source. Sizes include wheels and handles. Some details are still being confirmed.

Side by side

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

Cabin bag: 56 × 36 × 23 cm, 7 kg
SideBagLimitResult
Length56 cm56 cmExact
Width33 cm36 cm3 cm spare
Depth23 cm23 cmExact

Empty it weighs 2 kg of the 7 kg limit.

Jetstar rules worth knowing

  • Cabin bag: 7 kg total across your main bag and one small item.
  • Personal item: Small item; shares the 7 kg limit. Jetstar announced changes to carry-on in 2026, so check your booking before you fly.
  • Extra carry-on weight can be bought on some routes.

Airlines where the Peak Design Travel Backpack 45L fits

Singapore AirlinesFrontier AirlinesSouthwest AirlinesAirAsiaAll airlines

Bags that fit Jetstar's cabin bag

Biggest first.

Good to know

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

Only just. Keep the front pockets flat and the expansion zip closed, and measure it packed before you leave.

What is Jetstar's cabin bag size limit?

Jetstar's cabin bag limit is 56 × 36 × 23 cm, up to 7 kg shared across your cabin items.

Which other bags fit Jetstar?

CabinZero Classic 36L, WANDF Personal Item Duffel and Horizn Studios Gion Shoulder Bag fit with room to spare. Cabin Max Metz 30L is right on the limit.