Airline Checked Baggage Size Chart & Check In Luggage ...
· The most common maximum size bag allowed is 62 linear (total) inches. A common size bag for checking through is: 27" x 21" x 14". Frequently Asked Baggage Questions What is the maximum size for check in luggage or how big can a checked bag be? For no extra charge, a checked bag / luggage / suitcase can have a maximum combined dimensions of 62".