Bottom Line. Is a backpack a carry on? In many cases, as long as it's not larger than about 55L, yes, you can use many backpacking backpacks as a carry on. Or, if you want to check extra gear like tent stakes and trekking poles, check it all.
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The Farpoint 55 comes with a fully detachable dayback that gives you ultimate flexibility with your travels. Plus, it meets most domestic carry-on requirements with the main pack overhead and daypack as your personal item for far-flung adventures.
Your backpack will generally be allowed as a carry-on if it's under 50 liters, or about 22 x 14 x 9 inches. Get a 45-liter backpack if you want to carry as much stuff as possible on the plane with you.
The usual maximum dimensions for carry-on luggage are 9 inches x 14 inches x 22 inches (22 centimeters x 35 centimeters x 56 centimeters). This is 43.12L, so your 50L backpack is about 16% too big.
Volume: A 45L backpack is the maximum-sized carry on allowed on most US airlines. For international or budget airlines, choose a bag under 40L. If you want to pack ultralight, anything 35L or under can be carried on virtually any airline. Dimensions: The common 45L volume is usually measured as 22 x 14 x 9 inches.
All bags from 30L-45L meet TSA carry-on regulations for all commercial flights. The 60L duffel meets TSA carry-on regulations for most commercial flights.
Among our daypacks, most of the bags below 40 liters will meet carry-on requirements. Follow the 22” x 14” x 9” or 45 linear inch total for standard carry-on dimensions, or call your airline for specific guidelines.
A 50L+ backpack is a great friend to those travelling for a few weeks. These bags are spacious and can accommodate a number of outfit changes before you ever have to visit a laundromat. But don't be tempted to fill your pack to its capacity before you've even left - remember to save space for souvenirs!
55 to 65 L does seem like a lot of volume for true ultralight. If you're struggling to get it into a 55L maybe you've got lightweight gear, but still aren't ultralight, in the sense that you're taking more stuff than most UL folks do. Which is fine if you are comfortable with it.
One MIGHT get away with a 55L backpack, but 40L would be much more reliable. Carry-on limits are defined by total linear inches, typically 45 or fewer, also maximum dimensions particularly length, generally 22 inches.
How many kg is a 55l backpack? In terms of kilos, a full 55 litre backpack will weigh around 14kgs approximately whereas a full 70 litre backpack will weigh around 20kg.
Volume: A 45L backpack is the maximum-sized carry on allowed on most US airlines. For international or budget airlines, choose a bag under 40L. If you want to pack ultralight, anything 35L or under can be carried on virtually any airline. Dimensions: The common 45L volume is usually measured as 22 x 14 x 9 inches.