---
url: "https://onebag.travel/compare/rjqv8c8bu9/travel-pack-3/zaj208cenq/thule-aion-40l/"
title: "Travel Pack 3 vs Thule Aion 40L - One Bag Travel"
description: "Travel Pack 3 vs Thule Aion 40L: capacity, weight, dimensions and how many airlines accept each as a carry-on, side by side."
source: "https://onebag.travel/compare/rjqv8c8bu9/travel-pack-3/zaj208cenq/thule-aion-40l/"
---
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3.  Travel Pack 3 vs. Thule Aion 40L

# Travel Pack 3 vs. Thule Aion 40L

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

## [Travel Pack 3](https://onebag.travel/carryon/rjqv8c8bu9/travel-pack-3/)

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

<table class="table table-sm cmp-spec mt-2"><tbody><tr><td>Capacity</td><td>35 L</td></tr><tr><td>Weight</td><td>1.9 kg</td></tr><tr><td>Dimensions</td><td>55×33×23 cm</td></tr><tr><td>Airline fit</td><td>68%</td></tr><tr><td>Price</td><td>$249</td></tr></tbody></table>

## Feature by feature

| Travel Pack 3 | Feature | Thule Aion 40L |
| --- | --- | --- |
| Storage |
| Y | Compression | N |
| None | Expanded Capacity | None |
| 1 | Opening | 1 |
| top, side | Passport | top |
| Y | Passthrough | Y |
| Carry |
| Y | Backpack | Y |
| optional | Hip Belt | optional |
| removable | Sternum Strap | Y |
| Inside |
| 16in | Laptop | 16in |
| 5 | Main Compartments | 4 |
| Y | Organizer | Y |
| Outside |
| × | Hard Shell | × |
| N | Rain-fly | N |
| 1, side | Water Bottle Holder | 1, side |
| Y | Water Resistant | Y |

<table class="cmp-material"><tbody><tr><td colspan="2">Material</td></tr><tr><td>1680D Cordura® ballistic nylon</td><td></td></tr></tbody></table>

## [Thule Aion 40L](https://onebag.travel/carryon/zaj208cenq/thule-aion-40l/)

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

![Front facing view of the Thule Aion 40L](https://res.cloudinary.com/obt/image/upload/c_fill,w_400/v1788990324/carryons/thule-aion-40l-zaj208cenq.avif)

<table class="table table-sm cmp-spec mt-2"><tbody><tr><td>Capacity</td><td>40 L</td></tr><tr><td>Weight</td><td>1.5 kg</td></tr><tr><td>Dimensions</td><td>52×33×23 cm</td></tr><tr><td>Airline fit</td><td>70%</td></tr><tr><td>Price</td><td>$200</td></tr></tbody></table>

## Key differences between the Travel Pack 3 and Thule Aion 40L

-   **Compression straps:** Yes on the Travel Pack 3; No on the Thule Aion 40L.
-   **Passport pocket:** Top, side on the Travel Pack 3; Top on the Thule Aion 40L.
-   **Sternum strap:** Removable on the Travel Pack 3; Yes on the Thule Aion 40L.
-   **Main compartments:** 5 on the Travel Pack 3; 4 on the Thule Aion 40L.

Both have: luggage passthrough, backpack straps, hip belt, 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. 129 accept both. 0 accept only the Travel Pack 3, and 3 accept only the Thule Aion 40L.

### Only the Thule Aion 40L fits

Scoot, Tiger Airways, WestJet.

## Travel Pack 3 vs. Thule Aion 40L: which should you pack?

The **Thule Aion 40L** carries 5L more than the **Travel Pack 3** (35L vs. 40L), while the **Thule Aion 40L** is the lighter pack at 1.5kg (vs. 1.9kg). For carry-on flexibility, the **Thule Aion 40L** fits 70% of the airlines we track — the higher of the two. If you prioritise packing volume, choose the Thule Aion 40L; if you want to travel lighter, the Thule Aion 40L is the better call.