---
url: "https://onebag.travel/compare/02bc32de-b553-463a-a455-177400d5423d/osprey-porter-46/zaj208cenq/thule-aion-40l/"
title: "Osprey Porter 46 vs Thule Aion 40L - One Bag Travel"
description: "Osprey Porter 46 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/02bc32de-b553-463a-a455-177400d5423d/osprey-porter-46/zaj208cenq/thule-aion-40l/"
---
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3.  Osprey Porter 46 vs. Thule Aion 40L

# Osprey Porter 46 vs. Thule Aion 40L

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

## [Osprey Porter 46](https://onebag.travel/carryon/02bc32de-b553-463a-a455-177400d5423d/osprey-porter-46/)

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

![Front facing view of the Osprey Porter 46](https://res.cloudinary.com/obt/image/upload/c_fill,w_400/carryons/bus8myci54gl3byfegrn)

<table class="table table-sm cmp-spec mt-2"><tbody><tr><td>Capacity</td><td>46 L</td></tr><tr><td>Weight</td><td>1.5 kg</td></tr><tr><td>Dimensions</td><td>55×36×23 cm</td></tr><tr><td>Airline fit</td><td>61%</td></tr><tr><td>Price</td><td>$185</td></tr></tbody></table>

## Feature by feature

| Osprey Porter 46 | Feature | Thule Aion 40L |
| --- | --- | --- |
| Storage |
| 2 | Compression | N |
| None | Expanded Capacity | None |
| 1 | Opening | 1 |
| top | Passport | top |
| Y | Passthrough | Y |
| Carry |
| hideable | Backpack | Y |
| hideable | Hip Belt | optional |
| Y | Sternum Strap | Y |
| Inside |
| 16in | Laptop | 16in |
| 4 | Main Compartments | 4 |
| Y | Organizer | Y |
| Outside |
| × | Hard Shell | × |
| N | Rain-fly | N |
| N | Water Bottle Holder | 1, side |
| Y | Water Resistant | Y |

<table class="cmp-material"><tbody><tr><td colspan="2">Material</td></tr><tr><td>bluesign®-approved Recycled 500D Nylon Packcloth PFC Free DWR</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 Osprey Porter 46 and Thule Aion 40L

-   **Compression straps:** 2 on the Osprey Porter 46; No on the Thule Aion 40L.
-   **Backpack straps:** Hideable on the Osprey Porter 46; Yes on the Thule Aion 40L.
-   **Hip belt:** Hideable on the Osprey Porter 46; Optional on the Thule Aion 40L.
-   **Water bottle pockets:** No on the Osprey Porter 46; 1, side on the Thule Aion 40L.

Both have: passport pocket, luggage passthrough, sternum strap, laptop sleeve, built-in organizer, water resistant.

## Which airlines take each bag as a carry-on

We checked both bags against the carry-on size limits of 189 airlines. 116 accept both. 0 accept only the Osprey Porter 46, and 16 accept only the Thule Aion 40L.

### Only the Thule Aion 40L fits

Aerolineas Argentinas, Air France, Air India, Air Mauritius, Boliviana de Aviacion, Cayman Airways, Croatia Air, Indigo, Jet Airways, Kenya Airways, KLM, LATAM , Scoot, Sky Airlines, Tiger Airways, WestJet.

## Osprey Porter 46 vs. Thule Aion 40L: which should you pack?

The **Osprey Porter 46** carries 6L more than the **Thule Aion 40L** (46L vs. 40L), while the **Osprey Porter 46** is the lighter pack at 1.5kg (vs. 1.5kg). 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 Osprey Porter 46; if you want to travel lighter, the Osprey Porter 46 is the better call.