Airline Carry-On Bag Sizer
Enter your bag's dimensions — see instantly which airline sizer boxes it fits, and what basic fares charge.
Perguntas Frequentes (FAQ)
Frequently asked questions
How do airline sizer boxes work at the airport?
Airlines place physical metal sizer boxes at check-in and departure gates. If your bag cannot slide inside without excessive force (including wheels and handles), you may be forced to pay a gate-check fee.
What is the standard carry-on size for US and Canadian flights?
The most common domestic carry-on size is 22 × 14 × 9 inches (56 × 36 × 23 cm). Southwest and some international carriers allow slightly larger dimensions.