Top 3 Best Under-Seat Backpacks • (Ultimate 2021 Reviews)

Last updated Apr 17, 2021

Airlines these days are finding more ways than ever before to nickel and dime us. It’s our job to fight back with clever choices so we can keep our hard-earned money and still fly comfortably.

One airline that loves to squeeze every cent out of its customers is Spirit. In order to fly at their budget price, you’ll want to have an under-seat backpack and a full stomach upon arrival at the airport. Luckily for us, there are backpacks specially designed for under seat use with anti-theft features.

In this article, I’ll share with you my picks for best under seat backpack. These bags can be used for international travel as well. You can save money when flying on budget airlines in Europe such as Ryanair, which requires “Non-priority” customers to place their bags under the seat in front of them.

Please enjoy and let me know which one you like the most in the comments!

#1) Hynes Eagle 28L Aurora Convertible Backpack

Hynes Eagle 28L Aurora Convertible review


  • Holds up to a 15.6″ laptop in hidden padded sleeve pocket against your back
  • Front zipper compartment for easy access to items during travel
  • Opens at a 180-degree angle for easy packing and unpacking
  • Inner mesh zipper compartment to keep your clean clothes secure and separated from your other belongings
  • Additional inner zip pocket for dirty laundry or other items you’d like to keep separate
  • Hide-away shoulder straps make under-seat storage easier and also allow you to carry the bag like a briefcase
  • Two side handles and one top handle
  • Adjustable sternum strap for extra support can be slid up and down for people of all heights (I love this feature)
  • The clasps on the shoulder straps allow you to hook the bag to a fixed object to stop grab-and-go robberies
  • Capacity: 28 liters
  • Dimensions: 18.9″ Height x 11.8″ Width x 7.5″ Depth
  • Weight: 2.6 lbs

Hynes Eagle 28L Aurora Convertible review adjustable sternum strap

  • More than enough room for longer trips
  • Attractive design
  • Tons of pockets
  • Built with sturdy materials
  • Stowaway shoulder straps for easy under seat storage
  • No RFID pockets
  • No TSA lay-flat feature
  • No luggage strap to hook to a rolling suitcase
  • No water bottle side pocket

What are current owners saying?

  • One frequent flyer who travels between LA and NYC loves this as a carry-on bag on United. He’s had peace of mind using a carry-on after previously losing his checked luggage in transit. He also reported that there’s enough room in the Aurora to pack everything needed for a 5-day trip.
  • One minimalist packer gave the Aurora a big thumbs up for a multi-week trip through Europe.
  • One woman fell in love with this bag after deciding she needed to condense her personal item carry-on and checked bag into one under-seat carry-on bag. After searching, she decided on the Aurora and hasn’t looked back. Now she has everything she needs while traveling, plus she’s saving money and time at the baggage claim area.
  • Another woman has been using this bag for air and bus travel for seven months without any issues.
  • One person confirmed that this bag “worked for Spirit personal item.”

#2) Lewis N. Clark ONboard Underseat Carry-On Backpack

Lewis N. Clark ONboard Underseat Carry-On Backpack Review


  • Laptop sleeve fits up to a 15″ notebook computer
  • Zippered internal RFID-blocking compartment to keep your identity and credit card information secure while in transit
  • Hidden easy-access pocket in back panel with magnetic closure
  • Bag design allows you to easily access your items of choice while the bag is stowed beneath the plane seat in front of you
  • Removable accessory pocket
  • Large side pockets to hold your water bottle, umbrella or other items
  • Includes luggage strap to hook atop a rolling suitcase
  • Adjustable sternum strap for added back support
  • Built with lightweight durable 840D ballistic nylon
  • Dimensions: 13″ Width x 7″ Depth x 19″ Height
  • Weight: 1 lb

Lewis N. Clark ONboard Underseat Carry-On Backpack Review 1

  • Super lightweight
  • Includes most important travel features
  • RFID-blocking pocket
  • Luggage strap to hook to a rolling suitcase
  • No lay-flat feature for TSA checkpoints
  • Maybe too small for longer journeys

What are current owners saying?

  • One taller gentleman who stands 6′ said it does look a bit small on his frame. However, he gave the bag 5 stars and noted that it has a “surprising amount” of storage options. He also likes the removable storage compartment included with the bag.
  • Another reviewer called it the “perfect size for travel.”

Overall, this is a great pack offered by a reputable travel company, Lewis N. Clark. The company is also one of the leaders in anti-theft travel gear and other accessories.

Another important thing to remember is that a lot of airlines weigh your carry-on bag or personal item. In my experience, they’ve let me slide if my bag is a bit overweight. Since this bag weighs just 1 lb, you can be sure to maximize the carry-on weight allowance offered by each airline.

#3) KOPACK Travel Backpack

KOPACK Travel Backpack Review

#3 on the list is made by one of my favorites companies, Kopack. With this pack, you get a ton of useful features and a sleek appearance. Let’s explore the features.


  • Padded laptop sleeve holds up to a 17″ laptop with an additional sleeve for tablets
  • 180-degree lay-flat feature to avoid taking your laptop out at TSA checkpoints
  • An external USB port with a detachable cable allows you to charge your cell phone without having to open your bag (requires power bank)
  • Hidden pocket in back panel and hidden card pocket in the shoulder strap
  • Luggage strap to hook bag atop a rolling suitcase
  • Lockable zippers (requires luggage locks)
  • Top box pocket for sunglasses
  • Detachable key hook
  • Built with water-repellent and anti-scratch materials
  • Dimensions: 19.7″ Height x 7″ Depth x 13.4″ Width
  • Weight: 2.2 lbs

KOPACK Travel Backpack Review 1KOPACK Travel Backpack Review 2

  • Packed with useful travel features
  • More anti-theft features than the other two bags
  • Attractive design
  • Lay-flat feature for TSA checkpoints
  • Tons of organization pockets
  • External USB port for easy phone charging
  • Fits up to a 17″ laptop
  • No RFID-blocking pockets
  • No sternum strap

What are current owners saying?

  • One person “didn’t know this bag was so awesome” until it arrived. He said this bag outshines a North Face backpack he paid more than double for.
  • One traveler confirmed this bag can be considered a “personal item” by airlines. The same person noted how easy it is to pack this bag and how the 180-degree opening allows for a much more efficient and time-saving packing experience.
  • Another person who purchased it for international travel confirmed that it’s been great as a carry-on bag.
  • One woman’s husband used it with success for a trip to Israel and day-to-day commuting while he was there.
  • Several users reported the padded shoulder straps are quite comfortable.

Bottom Line

All three of the backpacks above are great choices for under-seat carry-on backpacks. It’s up to you to decide which features you like the most.

Personally, I like the Kopack bag the most since I use a rolling suitcase to carry my clothing and other large items. I love the lay-flat feature that makes going through airport security checkpoints less stressful, plus the external USB port for charging my phone.

The Lewis N. Clark bag is great for domestic travel and short trips while the Hynes Aurora is a great overall bag for longer journeys.

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