Deuter Flyt 20 vs. Ortlieb Atrack ST

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

Deuter Flyt 20

Front facing view of the Deuter Flyt 20
Capacity20 L
Weight1.18 kg
Dimensions50×26×19 cm
Airline fit92%
Price$178

Feature by feature

Deuter Flyt 20FeatureOrtlieb Atrack ST
Storage
Y Compression Y
None Expanded Capacity None
4 Opening 4
N Passport N
N Passthrough N
Carry
Y Backpack Y
removable Hip Belt Y
Y Sternum Strap Y
Inside
N Laptop N
1 Main Compartments 1
Y Organizer
Outside
× Hard Shell ×
N Rain-fly N
2 Water Bottle Holder 2
Y Water Resistant Y
Material
210D PA, 100D PA High TenacityPS33

Ortlieb Atrack ST

Front facing view of the Ortlieb Atrack ST
Capacity25 L
Weight1.41 kg
Dimensions56×26×25 cm
Airline fit27%
Price$250

Key differences between the Deuter Flyt 20 and Ortlieb Atrack ST

Both have: compression straps, backpack straps, sternum strap, 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. 51 accept both. 123 accept only the Deuter Flyt 20, and 0 accept only the Ortlieb Atrack ST.

Only the Deuter Flyt 20 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 Niugini, 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, Belavia, 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, Czech Airlines, Delta Airlines, Dragonair, Emirates Airlines, Enter Air, Ethiopian Airlines, Etihad Airways, 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, Oman Air, Pakistan International, Peach, Porter Airlines, Qantas Airways, Qatar Airways, Republic Airways, Royal Brunei Airlines, Royal Jordanian, 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.

Deuter Flyt 20 vs. Ortlieb Atrack ST: which should you pack?

The Ortlieb Atrack ST carries 5L more than the Deuter Flyt 20 (20L vs. 25L), while the Deuter Flyt 20 is the lighter pack at 1.18kg (vs. 1.41kg). For carry-on flexibility, the Deuter Flyt 20 fits 92% of the airlines we track — the higher of the two. If you prioritise packing volume, choose the Ortlieb Atrack ST; if you want to travel lighter, the Deuter Flyt 20 is the better call.