Japan Airlines (JAL) Mileage Bank miles expire 36 months from when you earned the miles.
Specifically, JAL miles expire at 10 AM (EST) or 7 AM (PST) on the last day of the 36th month following the month of the transaction.
For example, if you earned or transferred 10,000 miles on April 1, 2021, your miles would expire on April 31, 2024.
There is no way to extend the miles, similar to the other Japanese airline, All Nippon Airways.
Comparison of Mileage Expiration Policies
Below are the mileage expiration policies for the major points programs.
|AeroMexico||24 months after inactivity|
|Air Canada (Aeroplan)||18 months after inactivity|
|Air France (Flying Blue)||24 months after inactivity|
|Alaska Airlines||24 months after inactivity|
|American Airlines||18 months after inactivity|
|Asiana Airlines||10 years|
|British Airways||36 months after inactivity|
|Delta Air Lines||Never|
|Etihad||24 months from inactivity|
|EVA Air||36 months|
|Iberia||36 months after inactivity|
|Korean Air||10 years|
|Qantas||18 months after inactivity|
|Qatar Airways||36 months after inactivity|
|Singapore Airlines||36 months|
|Turkish Airlines||3 years|