For flights from /to the United States, the baggage allowance is based on the per-piece concept. You can purchase a maximum of two (2) pieces and each piece must not weigh more than 20kg. If you are bringing two (2) bags weighing 10kg each, both will still be considered as two (2) pieces.

Whether you can check two pieces of baggage depends entirely on your airline’s "Baggage Concept" (Weight vs. Piece) and your fare class. Most North American and European airlines use the "Piece Concept" for international flights, where your ticket might allow for "1 PC" (one bag) or "2 PC" (two bags) up to a certain weight each (usually 23kg/50lb). If your ticket says "1 PC" and you bring two bags, you will typically be charged an "excess baggage" fee for the second item, even if the total weight is under the limit. However, some airlines (like Southwest in the US) allow "Two Bags Fly Free." In Asia and the Middle East, a "Weight Concept" is often used, where you can bring as many bags as you like as long as their combined weight does not exceed the total allowance (e.g., 30kg). In 2026, it is vital to check your "E-ticket" or the airline's "Manage Booking" page, as many budget fares now include zero checked bags by default.