Q:

What is the maximum size for carry-on luggage on an airline?

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Quick Answer

The maximum size for carry-on luggage allowed on a flight depends on the airline. Delta, for example, allows items measuring 22 inches by 14 inches by 9 inches and weighing 40 pounds or less. Alaska Airlines allows bags measuring up to 10 inches by 17 inches by 24 inches.

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What is the maximum size for carry-on luggage on an airline?
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Full Answer

United's limits are the same as Delta's, while Southwest has a more generous limit of 24 inches by 16 inches by 10 inches. Hawaiian Airlines also uses the United and Delta limits, but carry-on bags must not weigh more than 25 pounds. If a bag looks questionable, attendants ask the owner to place it inside of a metal framed bag sizing template to check the dimensions. Owners must check anything that doesn't fit.

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