Alaska Airlines
flight
AS 5257:
London Heathrow - New York John F. Kennedy
London Heathrow - New York John F. Kennedy
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FLIGHT SCHEDULE
Direct Codeshare Flights:
Alaska Airlines AS5257
Valid until 2026-01-04
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by British Airways.
(BA 173)
Duration: 8:00, non-stop Boeing 777 (777)
Direct Codeshare Flights:
Alaska Airlines AS5257
Effective 2026-01-12 through 2026-03-07
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by British Airways.
(BA 173)
Duration: 8:00, non-stop Boeing 777 (777)
Direct Codeshare Flights:
Alaska Airlines AS5257
Effective 2026-03-08 through 2026-03-28
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by British Airways.
(BA 173)
Duration: 8:00, non-stop Boeing 777 (777)
Direct Codeshare Flights:
Alaska Airlines AS5257
Effective from 2026-10-25
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by British Airways.
(BA 173)
Duration: 8:00, non-stop Boeing 777 (777)
Direct Codeshare Flights:
Alaska Airlines AS5257
Effective 2026-03-29 through 2026-10-24
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by British Airways.
(BA 173)
Duration: 7:50, non-stop Boeing 777 (777)
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Parallax here LHR-JFK
- AS 5257 is an international flight departing from London Heathrow airport, United Kingdom (LHR) and arriving at New York John F. Kennedy airport, United States (JFK).
- The flight distance is 3440 miles, or 5536 km.
- The timezone of the departure airport is UTC+0 , and the timezone of the arrival airport is UTC-5 . Current time at the point of departure is (loading...), and (loading...) at the point of arrival. There is a (loading...) hour time difference between the airports.
- For direct flights, the flight time varies between 7:50 and 8:00.