Tom Bihn Aeronaut 30L vs. Millican Smith 15L

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

Tom Bihn Aeronaut 30L

Front facing view of the Tom Bihn Aeronaut 30L
Capacity30 L
Weight1.3 kg
Dimensions50×32×20 cm
Airline fit91%
Price$330

Feature by feature

Tom Bihn Aeronaut 30LFeatureMillican Smith 15L
Storage
N Compression N
None Expanded Capacity None
0 Opening 2
side Passport side
N Passthrough N
Carry
hideable Backpack Y
removable Hip Belt removable
removable Sternum Strap removable
Inside
N Laptop 13in
5 Main Compartments 3
N Organizer N
Outside
× Hard Shell ×
N Rain-fly N
N Water Bottle Holder N
Y Water Resistant Y
Material
1050 denier ballistic nylon OR ultralight 400d Halcyon/420d nylon ripstop 200 denier Halcyon/nylon ripstop fabric liningWeatherproof Bionic Canvas

Millican Smith 15L

Front facing view of the Millican Smith 15L
Capacity15 L
Weight0.8 kg
Dimensions45×28×10 cm
Airline fit96%
Price$115

Key differences between the Tom Bihn Aeronaut 30L and Millican Smith 15L

Both have: passport pocket, hip belt, sternum strap, water resistant.

Which airlines take each bag as a carry-on

We checked both bags against the carry-on size limits of 189 airlines. 172 accept both. 0 accept only the Tom Bihn Aeronaut 30L, and 9 accept only the Millican Smith 15L.

Only the Millican Smith 15L fits

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

Tom Bihn Aeronaut 30L vs. Millican Smith 15L: which should you pack?

The Tom Bihn Aeronaut 30L carries 15L more than the Millican Smith 15L (30L vs. 15L), while the Millican Smith 15L is the lighter pack at 0.8kg (vs. 1.3kg). For carry-on flexibility, the Millican Smith 15L fits 96% of the airlines we track — the higher of the two. If you prioritise packing volume, choose the Tom Bihn Aeronaut 30L; if you want to travel lighter, the Millican Smith 15L is the better call.