Osprey Porter 46 vs. STM Trilogy

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

Osprey Porter 46

by Osprey
Front facing view of the Osprey Porter 46
Capacity46 L
Weight1.5 kg
Dimensions55×36×23 cm
Airline fit61%
Price$185

Feature by feature

Storage
2 Compression N
None Expanded Capacity None
1 Opening 4
top Passport N
Y Passthrough N
Carry
hideable Backpack Y
hideable Hip Belt N
Y Sternum Strap N
Inside
16in Laptop 15in
4 Main Compartments 1
Y Organizer Y
Outside
× Hard Shell ×
N Rain-fly N
N Water Bottle Holder 2
Y Water Resistant Y
Material
bluesign®-approved Recycled 500D Nylon Packcloth PFC Free DWR100% polyester

STM Trilogy

by Stm
Front facing view of the STM Trilogy
Capacity24 L
Weight0.64 kg
Dimensions46×30×16 cm
Airline fit94%
Price$80

Key differences between the Osprey Porter 46 and STM Trilogy

Both have: 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 62 accept only the STM Trilogy.

Only the STM Trilogy fits

Aerolineas Argentinas, Air Baltic, Air China, Air France, Air India, Air Malta, Air Mauritius, Air Niugini, Air Serbia, Air Seychelles, American Eagle, Asiana Airlines, ATA Airlines, Belavia, Blue Air, Boliviana de Aviacion, Bulgaria Air, Cayman Airways, China Eastern, Croatia Air, easyJet, Emirates Airlines, Enter Air, Etihad Airways, flybe, Icelandair, Indigo, InselAir, Jet Airways, Juneyao Airlines, Kenya Airways, KLM, LATAM , Liat Airlines, Luxair, Meridiana Fly, Nordwind Airlines, Oman Air, Pakistan International, Qatar Airways, Ravn Alaska, Regional Express, Royal Brunei Airlines, Royal Jordanian, Ryanair, S7, Scoot, Shandong Airlines, Shenzhen Airlines, Sky Airlines, Sun Express, TAP Air Portugal, TAROM, Tianjin Airlines (A320 & E190), Tiger Airways, TUI, Ukraine International, VIM Airlines (Closed), Virgin Australia, Volotea, WestJet, Xiamen.

When it comes to picking a carry on backpack, there's a host of options available in the market. Two proficient operators in this space are Osprey Porter 46 by Osprey and the STM Trilogy by Stm. Let’s take a deep dive into the specifics of each, starting off with the Osprey Porter 46.

The Osprey Porter 46 is a hiker's delight. With a whopping 46-liter capacity, it is designed for those who like to pack it all. Its nylon construct gifts it toughness and durability, while the large, laptop compartment can house a 1-inch laptop. The bag boasts compatibility with 47% airlines, however, the large dimensions and weight of 1.5 pounds make it less portable than its competitor. It is indeed, as one reviewer rightly pointed out, a "big pack with a big capacity."

Next, is the STM Trilogy, coruscating light with its 24-liter capacity and compatibility with 83% airlines. Weighing in at just 0.64 pounds, this 100% polyester-made backpack is all about portability and comfort. As a reviewer described, the bag has "premium practicality. Its compartments and durability does not come at the cost of comfort." It is an excellent choice for students, office workers, or regular travelers who seek a functional and reliable bag to protect their stuff, including a 15-inch laptop.

Drawing things to a close, the Osprey Porter 46, with its large size and solid build, offers ideal functional gear space for those who tend to carry a lot. On the other hand, the STM Trilogy, with its sleek construct and extensive compatibility, provides a comfortable option for being a carry on, making it an effective choice for regular travelers, students, or office-goers. The choice between the two comes down to an individual’s specific needs and carrying capacity requirements.