40L Carry-On Backpacks

40 liters is the number that beats baggage fees on every airline.

Arca's 40L carry-on backpacks start compact at 30L and expand to the full 40L when you need the space — the most versatile bag size in our lineup. Every bag in this collection meets carry-on size requirements for all major US and most international carriers. No gate-checks, ever.

What's included in every 40L Arca backpack:

  • Expandable 30L→40L storage — grows with your packing list
  • Fits overhead bins on Southwest, United, Delta, Frontier, Spirit, and British Airways
  • Dedicated 17" laptop sleeve + organized interior compartments
  • Water-resistant 1680D Oxford fabric
  • Hidden anti-theft pocket + luggage pass-through
  • 1-year warranty + 30-day money-back guarantee

Pack smart. Fly free. No checked bag fees, ever.

6 products

★ MOST POPULARSAVE $71.05
40L Travel Backpack Black ARCA
Sale price$98.95 Regular price$170.00
4.9
★ MOST POPULARSAVE $56.00
Travel Daypack Backpack Black Arca Official
Sale price$89.00 Regular price$145.00
4.8
New ArrivalSAVE $49.03
35l Travel Backpack Pro Peacock Blue ARCA
Sale price$85.97 Regular price$135.00
4.9
New ArrivalON SALE
Nomad Travel Backpack V2 Brown / Large with fanny pack ARCA
Sale priceFrom $109.95 Regular price$200.00
BEST SELLERSAVE $60.05
35L Travel Backpack Peacock Blue ARCA
Sale price$89.95 Regular price$150.00
4.8
New Arrival
Ultralight Hiking Pack Green / 20-40L Arca Official
Sale price$87.00
Still need help?Click the link below for inquiries; we're here to help you make the best choice.
Contact Us

Why Choose a 40L Backpack?

The Benefits of a 40 Liter Backpack

A 40 liter backpack strikes the perfect balance between size and functionality. It’s compact enough to qualify as carry-on luggage for most airlines yet spacious enough to hold clothing, gear, and essentials for multi-day trips. Travelers love the flexibility it offers—whether for business, leisure, or outdoor exploration. With a smart design and premium build, this backpack adapts to every journey.

Everyday Versatility in a 40 Litre Backpack

Choosing a 40 litre backpack means investing in a bag that works as hard as you do. Ideal for weekend getaways, commuting, or hiking trails, these backpacks feature padded straps and breathable panels for comfort. With organized compartments for laptops, clothes, and travel gear, they simplify packing while keeping everything easily accessible.

The Strength of a 40 Liter Hiking Backpack

A 40 liter hiking backpack is designed to endure outdoor adventures while keeping you comfortable on the trail. Reinforced stitching, water-resistant fabrics, and ergonomic designs ensure it can handle rugged conditions. With enough storage for hydration packs, gear, and layers, these backpacks make hiking efficient and enjoyable. At Arca Official, we merge durability with style for a bag that performs in every environment.

Why a 40L Travel Backpack is Ideal

A 40l travel backpack offers more than just storage—it delivers convenience for travelers who value flexibility. Perfectly sized for overhead bins, it eliminates the hassle of checked luggage while giving you enough room for essentials. Lightweight yet durable, these backpacks make both short trips and extended stays seamless. Every detail is crafted to ensure stress-free travel without sacrificing design.

Featured Articles

View all
Arca OfficialWhat to wear in London in winter — London winter street style

What to Wear in London in Winter: Packing Guide & Outfit Ideas (2026)

What to Wear in London in Winter: Packing Guide & Outfit Ideas (2026) By Arca Official Team September 18, 2026 9 min read In This...

Arca OfficialWhat to wear in NYC in winter — New York City winter street style

What to Wear in NYC in Winter: The Complete Outfit Guide (2026)

What to Wear in NYC in Winter: The Complete Outfit Guide (2026) By Arca Official Team September 18, 2026 9 min read In This Article ...

Arca OfficialThe Best Travel Hoodie for 2026: Why Oversized Beats Everything Else

The Best Travel Hoodie for 2026: Why Oversized Beats Everything Else

An oversized zip-up hoodie works as a plane blanket, layers over anything, compresses more efficiently than a fitted cut, and holds its shape after being packed. Here's why it's the best travel lay...