Lightweight and Flexible: Duffel bags are generally lighter and more flexible than other carry-on bags. They are easier to store in overhead compartments or under seats. Duffel bags are also better to carry around, especially if you opt for those with wheels or a comfortable shoulder strap.
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Checked LuggageThe most common maximum size bag allowed is 62 linear (total) inches. A common size bag for checking through is: 27 x 21 x 14. Airline carriers will allow overweight, oversize or additional baggage for additional fees.
The 60L does fit in the overhead bins on most airplanes even when full, and it holds a lot of stuff. I've fit two weeks worth of clothes, multiple pairs of shoes, towels, etc. into this bag for a long trip.
There are lots of carry-on duffels, packs and bags in this size range to choose from. 50-75 liters: For a trip that lasts one to two weeks, many people jump up to a bag in this range.
While it may vary from airline to airline, the maximum duffel bag carry-on size is typically 22 x 14 x 9 inches for flights within the U.S. Bag size limitations on international flights can vary, so always check ahead of time on the airline's website.
Only priority boarding passengers will be permitted to take one small bag (40cm x 20cm x 25cm), plus a larger cabin bag (55 x 40 x 20cm) with a maximum weight allowance of 10kg into the cabin free of charge. Non-priority customers can only bring one small bag (40cm x 20cm x 25cm), that must fit into the sizer.
Carry-on bags are limited to 22 inches long, 14 inches wide and 9 inches high including wheels and handles. All three measurements shouldn't add up to more than 45 inches.
The main theme of the airlines' rules is that a personal item is a small bag, like a duffle bag, daypack, purse, tote, or laptop bag that fits under the seat in front of you. A small duffle bag fits in the spirit of this rule.
If your carry-on is oversized (and doesn't physically fit inside the overhead compartments) or you encounter a strict airline employee, they will ask you to check it in at the gate.
Though you might find an inch or two of a difference with various airlines, the standard domestic carry-on luggage size is 22 x 14 x 9, which includes the handle and the wheels. This size limit ensures your bag — and ideally everyone else's — will be able to be stored safely in the overhead bin for your flight.
The most common personal item size limit is 18 x 14 x 8 inches (46 x 36 x 20 cm). If your backpacks or handbags don't exceed this number, you're good. Weight limitations for personal belongings are also regulated by several airlines ranging from 10 to 25 pounds (around 4.5 to 11 kg).
While most weekender bags are generally the same size, duffel bags can vary greatly in capacity. Carry-on duffels will be about 40 liters in volume and checked duffels are 70 to 100 liters with options for both wheeled and non-wheeled bags.
How Big Can a Duffel Bag Carry-On Be? Now, let's dive into the size requirements for a duffel bag carry-on. In general, most airlines limit the size of your carry-on to around 22 x 14 x 9 inches with a capacity of 45 liters.
Our smallest Black Hole® Duffel, with a 40-liter volume that's perfect for small loads and long weekends, is made with 100% recycled body fabric, lining and webbing. This carry-on sized duffel meets most airline and train carry-on requirements.
Ultimately, most 40L or 45L duffel bags will fit as carry-ons, especially the ones (like a duffel bag!) that are soft enough to shift shape slightly. You'll need a very soft, squishy duffel or a small backpack if you plan to use a duffel as an under-the-seat bag.
The design of the 70L is perfectly suited for airplane carry-on or check in, and the features of the 70L are perfect for any adventure once you arrive at your destination. Being able to compress the 70L allows you to use it as carry-on for all major airlines in the US and Canada.
edit: used the 65L unexpanded on both of my united flights as carry on, no issues either way. Probably could have squeezed it down to fit into the size guide if needed but this way I got a tiny bit of extra room in the bag and no issues closing the overhead, older united plane where the bags lay flat not on their side.