Peak Design Travel Backpack 30L vs. Peak Design Travel Backpack 45L

Two carry-on travel backpacks, compared spec for spec.

Peak Design Travel Backpack 30L

Front facing view of the Peak Design Travel Backpack 30L
Capacity27 L
Weight1.4 kg
Dimensions53×33×18 cm
Airline fit88%
Price$240

Feature by feature

Peak Design Travel Backpack 30LFeaturePeak Design Travel Backpack 45L
Storage
1 Compression 1
33L Expanded Capacity 45L
1 Opening 1
top Passport top
Y Passthrough Y
Carry
hideable Backpack hideable
optional Hip Belt hideable
removable Sternum Strap removable
Inside
16in Laptop 16in
7 Main Compartments 7
Y Organizer Y
Outside
× Hard Shell ×
N Rain-fly N
2, side Water Bottle Holder 2, side
Y Water Resistant Y
Material
shell: Weatherproof 400D nylon canvas bottom: 900D nylon weatherproof zippersshell: Weatherproof 400D nylon canvas bottom: 900D nylon weatherproof zippers

Peak Design Travel Backpack 45L

Front facing view of the Peak Design Travel Backpack 45L
Capacity35 L
Weight2.1 kg
Dimensions56×33×24 cm
Airline fit26%
Price$300

Key differences between the Peak Design Travel Backpack 30L and Peak Design Travel Backpack 45L

Both have: compression straps, passport pocket, luggage passthrough, backpack straps, sternum strap, laptop sleeve, built-in organizer, water bottle pockets, water resistant.

Which airlines take each bag as a carry-on

We checked both bags against the carry-on size limits of 189 airlines. 49 accept both. 118 accept only the Peak Design Travel Backpack 30L, and 0 accept only the Peak Design Travel Backpack 45L.

Only the Peak Design Travel Backpack 30L fits

Aer Lingus, Aeroflot, Aerolineas Argentinas, Aeromexico, Air Asia, Air Baltic, Air Canada, Air Caraibes, Air China, Air France, Air India, Air Macau, Air Malta, Air Mauritius, Air Serbia, Air Seychelles, Air Wisconsin, AirAsiaX, Alaska Airlines, All Nipon Airways, Allegiant Air, American Airlines, ANA, Asiana Airlines, ATA Airlines, Austrian, Avianca , Azerbaijan Airlines, Bahamasair, Bangkok Airways, Biman Bangladesh, Blue Air, Boliviana de Aviacion, Brussels Airlines, Bulgaria Air, Cambodia Angkor Air, Cathay Pacific, Cayman Airways, Cebu Pacific, China Airlines, China Eastern, CommutAir, Croatia Air, Czech Airlines, Delta Airlines, Dragonair, Emirates Airlines, Enter Air, Ethiopian Airlines, Eurowings, EVA Air, Fiji Airways, Flair Air, flybe, Garuda Indonesia, Gol Linhas Aereas, Hawaiian Airlines, Hong Kong Airlines, Iberia, Icelandair, Indigo, InselAir, Interjet, Iran Air, Japan Airlines, Jet Airways, jetBlue Airways, Jetstar Airways, Jetstar Asia, Juneyao Airlines, Kenya Airways, KLM, Kulula, LATAM , Liat Airlines, LOT Polish, Lufthansa, Luxair, Mahan Air, Malaysia Airlines, Mango, Meridiana Fly, Mesa Airlines, Nordwind Airlines, Norwegian, Pakistan International, Peach, Porter Airlines, Qantas Airways, Republic Airways, Royal Brunei Airlines, Ryanair, S7, SAS Scandinavian, Scoot, Shandong Airlines, Shenzhen Airlines, Sky Airlines, Skywest, Inc., South African Airways, SriLankan Airlines, Sun Express, Swiss Int'l Air Lines, TAP Air Portugal, TAROM, Tianjin Airlines (A320 & E190), Tiger Airways, Trans States, TUI, Turkish Airlines, Ukraine International, United Airlines, Vietnam Airlines, VIM Airlines (Closed), Virgin Atlantic, Volotea, WestJet, Xiamen.

Peak Design Travel Backpack 30L vs. Peak Design Travel Backpack 45L: which should you pack?

The Peak Design Travel Backpack 45L carries 8L more than the Peak Design Travel Backpack 30L (27L vs. 35L), while the Peak Design Travel Backpack 30L is the lighter pack at 1.4kg (vs. 2.1kg). For carry-on flexibility, the Peak Design Travel Backpack 30L fits 88% of the airlines we track — the higher of the two. If you prioritise packing volume, choose the Peak Design Travel Backpack 45L; if you want to travel lighter, the Peak Design Travel Backpack 30L is the better call.