Many budget airlines, both domestic and international, have strict guidelines and fees for the number and size of carry-on bags-and ... No weight restrictions Delta Air Lines 22" x 14" x 9 ...

However, the rules can vary by airline. For example, American Airlines' carry-on luggage size is 22 x 14 x 9, while Southwest allows a slightly larger carry-on measuring 24 x 16 x 10. While carry ...