Seattle→LondonNonstop Flight TimeBFI–LTN

Seattle (Boeing Field/King County International Airport) to London (London Luton Airport).

Direct flights from BFI to LTN have an estimated flight time of about 10h 24m, based on the 4,761-mile great-circle distance. Our current captured departure sample includes weekly across 1 captured airline, with TUI Airways appearing most often in that sample.

Methodology: airline, aircraft, terminal, and departure-time details come from the rolling scheduled-departures window for BFI to LTN, last seen June 15, 2026. Frequency uses 1 scheduled departures across 1 observed day; flight time is estimated from great-circle distance until this route has enough tracked flights for an observed average. Provider coverage can miss operators on some routes, so confirm live timetables before booking.