Aer Flight Pack vs. Ministry of Supply Boston One

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

Aer Flight Pack

by Aer
Front facing view of the Aer Flight Pack
Capacity20 L
Weight1.5 kg
Dimensions46×30×14 cm
Airline fit94%
Price$180

Feature by feature

Aer Flight PackFeatureMinistry of Supply Boston One
Storage
N Compression N
None Expanded Capacity None
1 Opening 1
top Passport top
Y Passthrough Y
Carry
hideable Backpack hideable
N Hip Belt N
N Sternum Strap Y
Inside
16in Laptop 16in
4 Main Compartments 4
Y Organizer N
Outside
× Hard Shell ×
N Rain-fly N
1, side Water Bottle Holder 1, internal
Y Water Resistant Y
Material
1680D Cordura ballistic nylon900D 100% polyester shell

Ministry of Supply Boston One

Front facing view of the Ministry of Supply Boston One
Capacity28 L
Weight1.1 kg
Dimensions47×30×20 cm
Airline fit93%
Price$250

Key differences between the Aer Flight Pack and Ministry of Supply Boston One

Both have: passport pocket, luggage passthrough, backpack straps, laptop sleeve, water resistant.

Which airlines take each bag as a carry-on

We checked both bags against the carry-on size limits of 189 airlines. 175 accept both. 3 accept only the Aer Flight Pack, and 0 accept only the Ministry of Supply Boston One.

Only the Aer Flight Pack fits

American Eagle, easyJet, Ravn Alaska.

Aer Flight Pack vs. Ministry of Supply Boston One: which should you pack?

The Ministry of Supply Boston One carries 8L more than the Aer Flight Pack (20L vs. 28L), while the Ministry of Supply Boston One is the lighter pack at 1.1kg (vs. 1.5kg). For carry-on flexibility, the Aer Flight Pack fits 94% of the airlines we track — the higher of the two. If you prioritise packing volume, choose the Ministry of Supply Boston One; if you want to travel lighter, the Ministry of Supply Boston One is the better call.