Deuter UP Stockholm vs. Fjallraven Rucksack No. 21 Medium

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

Deuter UP Stockholm

Front facing view of the Deuter UP Stockholm
Capacity22 L
Weight0.8 kg
Dimensions51×30×17 cm
Airline fit89%
Price$115

Feature by feature

Deuter UP StockholmFeatureFjallraven Rucksack No. 21 Medium
Storage
N Compression N
None Expanded Capacity None
3 Opening 3
N Passport N
N Passthrough N
Carry
Y Backpack Y
removable Hip Belt N
removable Sternum Strap Y
Inside
15in Laptop 15in
1 Main Compartments 1
N Organizer N
Outside
× Hard Shell ×
N Rain-fly N
2 Water Bottle Holder 2
Y Water Resistant Y
Material
300D PES Ripstop, 500D rPESG-1000® HeavyDuty Eco: 65% polyester, 35% cotton

Fjallraven Rucksack No. 21 Medium

Front facing view of the Fjallraven Rucksack No. 21 Medium
Capacity20 L
Weight0.96 kg
Dimensions44×28×13 cm
Airline fit96%
Price$180

Key differences between the Deuter UP Stockholm and Fjallraven Rucksack No. 21 Medium

Both have: backpack straps, laptop sleeve, 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. 169 accept both. 0 accept only the Deuter UP Stockholm, and 12 accept only the Fjallraven Rucksack No. 21 Medium.

Only the Fjallraven Rucksack No. 21 Medium fits

Air Niugini, Air Tahiti, American Eagle, Belavia, easyJet, Etihad Airways, Great Lakes Airlines, Gulf Air, Qatar Airways, Ravn Alaska, Regional Express, Virgin Australia.

Deuter UP Stockholm vs. Fjallraven Rucksack No. 21 Medium: which should you pack?

The Deuter UP Stockholm carries 2L more than the Fjallraven Rucksack No. 21 Medium (22L vs. 20L), while the Deuter UP Stockholm is the lighter pack at 0.8kg (vs. 0.96kg). For carry-on flexibility, the Fjallraven Rucksack No. 21 Medium fits 96% of the airlines we track — the higher of the two. If you prioritise packing volume, choose the Deuter UP Stockholm; if you want to travel lighter, the Deuter UP Stockholm is the better call.