American Airlines has asked the US Department of Transportation (DOT) to delay starting new service from New York JFK to Tokyo Haneda from 31 January to 1 March.
The carrier tells DOT it is seeking the "modest" extension to avoid a revenue penalty it would incur by launching flights during the "depths of the off-peak season".
American explains that February is the lowest demand month of mainland US-Tokyo travel.
Citing MIDT data American states the market had 158,387 bookings in February 2010, roughly 25% fewer than the 208,387 recorded in March of the same year.
By launching flights in March, "American will benefit from the important seasonal upswing in Tokyo traffic".
American also states it is seeking equivalent relief the department granted to Delta Air Lines in September for the push back of its 31 January start to Haneda from Detroit and Los Angeles by 30 days.