---
url: "https://onebag.travel/compare/fp6w6mo3ab/millican-smith-18l/g9gkqqi9n3/tom-bihn-aeronaut-30l/"
title: "Millican Smith 18L vs Tom Bihn Aeronaut 30L - One Bag Travel"
description: "Millican Smith 18L vs Tom Bihn Aeronaut 30L: capacity, weight, dimensions and how many airlines accept each as a carry-on, side by side."
source: "https://onebag.travel/compare/fp6w6mo3ab/millican-smith-18l/g9gkqqi9n3/tom-bihn-aeronaut-30l/"
---
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3.  Millican Smith 18L vs. Tom Bihn Aeronaut 30L

# Millican Smith 18L vs. Tom Bihn Aeronaut 30L

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

## [Millican Smith 18L](https://onebag.travel/carryon/fp6w6mo3ab/millican-smith-18l/)

by [Millican](https://onebag.travel/carryons/?brands=Millican)

![Front facing view of the Millican Smith 18L](https://res.cloudinary.com/obt/image/upload/c_fill,w_400/v1601586503/carryons/mavericks-Smith-18l-slate-front_1024x_tzt5sd.webp)

<table class="table table-sm cmp-spec mt-2"><tbody><tr><td>Capacity</td><td>18 L</td></tr><tr><td>Weight</td><td>0.9 kg</td></tr><tr><td>Dimensions</td><td>50×28×10 cm</td></tr><tr><td>Airline fit</td><td>92%</td></tr><tr><td>Price</td><td>$130</td></tr></tbody></table>

## Feature by feature

| Millican Smith 18L | Feature | Tom Bihn Aeronaut 30L |
| --- | --- | --- |
| Storage |
| N | Compression | N |
| None | Expanded Capacity | None |
| 2 | Opening | 0 |
| side | Passport | side |
| N | Passthrough | N |
| Carry |
| Y | Backpack | hideable |
| removable | Hip Belt | removable |
| removable | Sternum Strap | removable |
| Inside |
| 15in | Laptop | N |
| 3 | Main Compartments | 5 |
| N | Organizer | N |
| Outside |
| × | Hard Shell | × |
| N | Rain-fly | N |
| N | Water Bottle Holder | N |
| Y | Water Resistant | Y |

<table class="cmp-material"><tbody><tr><td colspan="2">Material</td></tr><tr><td>Weatherproof Bionic Canvas</td><td>1050 denier ballistic nylon OR ultralight 400d Halcyon/420d nylon ripstop 200 denier Halcyon/nylon ripstop fabric lining</td></tr></tbody></table>

## [Tom Bihn Aeronaut 30L](https://onebag.travel/carryon/g9gkqqi9n3/tom-bihn-aeronaut-30l/)

by [Tom Bihn](https://onebag.travel/carryons/?brands=Tom Bihn)

![Front facing view of the Tom Bihn Aeronaut 30L](https://res.cloudinary.com/obt/image/upload/c_fill,w_400/v1601600830/carryons/aeronaut30_gvxzea.webp)

<table class="table table-sm cmp-spec mt-2"><tbody><tr><td>Capacity</td><td>30 L</td></tr><tr><td>Weight</td><td>1.3 kg</td></tr><tr><td>Dimensions</td><td>50×32×20 cm</td></tr><tr><td>Airline fit</td><td>91%</td></tr><tr><td>Price</td><td>$330</td></tr></tbody></table>

## Key differences between the Millican Smith 18L and Tom Bihn Aeronaut 30L

-   **Opening:** Rolltop on the Millican Smith 18L; Other on the Tom Bihn Aeronaut 30L.
-   **Backpack straps:** Yes on the Millican Smith 18L; Hideable on the Tom Bihn Aeronaut 30L.
-   **Laptop sleeve:** 15in on the Millican Smith 18L; No on the Tom Bihn Aeronaut 30L.
-   **Main compartments:** 3 on the Millican Smith 18L; 5 on the Tom Bihn Aeronaut 30L.

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. 2 accept only the Millican Smith 18L, and 0 accept only the Tom Bihn Aeronaut 30L.

### Only the Millican Smith 18L fits

Air Niugini, Great Lakes Airlines.

## Millican Smith 18L vs. Tom Bihn Aeronaut 30L: which should you pack?

The **Tom Bihn Aeronaut 30L** carries 12L more than the **Millican Smith 18L** (18L vs. 30L), while the **Millican Smith 18L** is the lighter pack at 0.9kg (vs. 1.3kg). For carry-on flexibility, the **Millican Smith 18L** fits 92% 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 18L is the better call.