---
url: "https://onebag.travel/compare/g12jtyvr06/deuter-attack-20/tj5fcocgs8/deuter-ypsilon/"
title: "Deuter Attack 20 vs Deuter Ypsilon - One Bag Travel"
description: "Deuter Attack 20 vs Deuter Ypsilon: capacity, weight, dimensions and how many airlines accept each as a carry-on, side by side."
source: "https://onebag.travel/compare/g12jtyvr06/deuter-attack-20/tj5fcocgs8/deuter-ypsilon/"
---
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3.  Deuter Attack 20 vs. Deuter Ypsilon

# Deuter Attack 20 vs. Deuter Ypsilon

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

## [Deuter Attack 20](https://onebag.travel/carryon/g12jtyvr06/deuter-attack-20/)

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

![Front facing view of the Deuter Attack 20](https://res.cloudinary.com/obt/image/upload/c_fill,w_400/v1621573420/carryons/Deuter_Attack_20L_yl2n0s.webp)

<table class="table table-sm cmp-spec mt-2"><tbody><tr><td>Capacity</td><td>20 L</td></tr><tr><td>Weight</td><td>1.55 kg</td></tr><tr><td>Dimensions</td><td>50×28×20 cm</td></tr><tr><td>Airline fit</td><td>92%</td></tr></tbody></table>

## Feature by feature

| Deuter Attack 20 | Feature | Deuter Ypsilon |
| --- | --- | --- |
| Storage |
| Y | Compression | N |
| None | Expanded Capacity | None |
| 4 | Opening | 4 |
| N | Passport | N |
| N | Passthrough | N |
| Carry |
| Y | Backpack | Y |
| removable | Hip Belt | removable |
| Y | Sternum Strap | removable |
| Inside |
| N | Laptop | N |
| 1 | Main Compartments | 1 |
| Y | Organizer | Y |
| Outside |
| × | Hard Shell | × |
| Y | Rain-fly | Y |
| 2 | Water Bottle Holder | 2 |
| Y | Water Resistant | Y |

<table class="cmp-material"><tbody><tr><td colspan="2">Material</td></tr><tr><td>600D PES Coat, 225D PES Ripstop</td><td>PES 600 Coat, 600D PES</td></tr></tbody></table>

## [Deuter Ypsilon](https://onebag.travel/carryon/tj5fcocgs8/deuter-ypsilon/)

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

![Front facing view of the Deuter Ypsilon](https://res.cloudinary.com/obt/image/upload/c_fill,w_400/v1621822951/carryons/Deuter_Ypsilon_brzrtz.webp)

<table class="table table-sm cmp-spec mt-2"><tbody><tr><td>Capacity</td><td>28 L</td></tr><tr><td>Weight</td><td>1.2 kg</td></tr><tr><td>Dimensions</td><td>45×29×24 cm</td></tr><tr><td>Airline fit</td><td>42%</td></tr><tr><td>Price</td><td>$135</td></tr></tbody></table>

## Key differences between the Deuter Attack 20 and Deuter Ypsilon

-   **Compression straps:** Yes on the Deuter Attack 20; No on the Deuter Ypsilon.
-   **Sternum strap:** Yes on the Deuter Attack 20; Removable on the Deuter Ypsilon.

Both have: backpack straps, hip belt, built-in organizer, rain cover, 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. 77 accept both. 97 accept only the Deuter Attack 20, and 2 accept only the Deuter Ypsilon.

### Only the Deuter Attack 20 fits

Air Asia, Air Baltic, Air Canada, Air China, Air Macau, Air Malta, Air Niugini, Air Serbia, Air Seychelles, Air Wisconsin, AirAsiaX, Alaska Airlines, Allegiant Air, American Airlines, Asiana Airlines, ATA Airlines, Austrian, Avianca , Azerbaijan Airlines, Bahamasair, Bangkok Airways, Belavia, Biman Bangladesh, Blue Air, Brussels Airlines, Bulgaria Air, Cambodia Angkor Air, Cathay Pacific, Cayman Airways, Cebu Pacific, China Airlines, China Eastern, CommutAir, Delta Airlines, Dragonair, Emirates Airlines, Enter Air, Ethiopian Airlines, Eurowings, EVA Air, Fiji Airways, Flair Air, flybe, Garuda Indonesia, Great Lakes Airlines, Hawaiian Airlines, Hong Kong Airlines, Icelandair, InselAir, jetBlue Airways, Jetstar Airways, Jetstar Asia, Juneyao Airlines, Kulula, Liat Airlines, LOT Polish, Lufthansa, Luxair, Mahan Air, Malaysia Airlines, Mango, Meridiana Fly, Mesa Airlines, Nordwind Airlines, Norwegian, Pakistan International, Porter Airlines, Qantas Airways, Republic Airways, Royal Brunei Airlines, Royal Jordanian, Ryanair, S7, SAS Scandinavian, Scoot, Shandong Airlines, Shenzhen Airlines, Skywest, Inc., South African Airways, SriLankan Airlines, Sun Express, Swiss Int'l Air Lines, TAP Air Portugal, TAROM, Tianjin Airlines (A320 & E190), Tiger Airways, Trans States, TUI, Turkish Airlines, Ukraine International, United Airlines, Vietnam Airlines, VIM Airlines (Closed), Virgin Atlantic, Volotea, WestJet, Xiamen.

### Only the Deuter Ypsilon fits

Gulf Air, Ravn Alaska.

## Deuter Attack 20 vs. Deuter Ypsilon: which should you pack?

The **Deuter Ypsilon** carries 8L more than the **Deuter Attack 20** (20L vs. 28L), while the **Deuter Ypsilon** is the lighter pack at 1.2kg (vs. 1.55kg). For carry-on flexibility, the **Deuter Attack 20** fits 92% of the airlines we track — the higher of the two. If you prioritise packing volume, choose the Deuter Ypsilon; if you want to travel lighter, the Deuter Ypsilon is the better call.