Aer Flight Pack vs. Day Owl Backpack Pro

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 PackFeatureDay Owl Backpack Pro
Storage
N Compression N
None Expanded Capacity None
1 Opening 1
top Passport top, back
Y Passthrough Y
Carry
hideable Backpack Y
N Hip Belt N
N Sternum Strap N
Inside
16in Laptop 16in
4 Main Compartments 6
Y Organizer Y
Outside
× Hard Shell ×
N Rain-fly N
1, side Water Bottle Holder 1, side
Y Water Resistant Y
Material
1680D Cordura ballistic nylonwaxed canvas

Day Owl Backpack Pro

Front facing view of the Day Owl Backpack Pro
Capacity21 L
Weight1.1 kg
Dimensions43×31×13 cm
Airline fit95%
Price$155

Key differences between the Aer Flight Pack and Day Owl Backpack Pro

Both have: luggage passthrough, 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. 177 accept both. 1 accept only the Aer Flight Pack, and 2 accept only the Day Owl Backpack Pro.

Only the Aer Flight Pack fits

Air Niugini.

Only the Day Owl Backpack Pro fits

Air Tahiti, Gulf Air.

Aer Flight Pack vs. Day Owl Backpack Pro: which should you pack?

The Day Owl Backpack Pro carries 1L more than the Aer Flight Pack (20L vs. 21L), while the Day Owl Backpack Pro is the lighter pack at 1.1kg (vs. 1.5kg). For carry-on flexibility, the Day Owl Backpack Pro fits 95% of the airlines we track — the higher of the two. If you prioritise packing volume, choose the Day Owl Backpack Pro; if you want to travel lighter, the Day Owl Backpack Pro is the better call.