London→HanoiNonstop Flight TimeLHR–HAN

London (London Heathrow Airport) to Hanoi (Noi Bai International Airport).

Direct flights from LHR to HAN have an estimated flight time of about 12h 26m, based on the 5,740-mile great-circle distance. Our current captured departure sample includes 3×/wk across 1 captured airline, with Vietnam appearing most often in that sample. Captured departure times run from 18:55 to 19:50 local time.

Methodology: airline, aircraft, terminal, and departure-time details come from the rolling scheduled-departures window for LHR to HAN, last seen June 15, 2026. Frequency uses 3 scheduled departures across 3 observed days; 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.