American AirlinesAA
Flights AA109 10:05 daily
live
Direct flights from London (LHR) to Boston (BOS): 35 nonstop departures observed each week across 5 airlines. 75% of the last 8 operated flights arrived within 15 minutes of schedule. The median arrival is 9 minutes late. No cancellations were recorded across the 8 tracked flights. The nonstop covers 5,239 km, an estimated 7 hours 13 minutes in the air. Measured by Pro Flight Search from live flight boards at London and Boston. Updated 13 September 2026 at 15:17 UTC.
LHR
London
heavy · +30
BOS
Boston
smooth · +0
5,239 km · ~7h 13m est.
Runs mixed · 5 airlines · 35x weekly · nonstop
75% on time
of the last 8 operated LHR → BOS flights arrived within 15 minutes
Median arrival delay is +9 min. 0 of 8 tracked legs cancelled in the sample. Will a delayed flight be cancelled? →
Median arrival+9 minacross the last 8 operated legs
Flight time~7h 13mestimated from route distance
Weekly departures35x5 direct airlines on the leg
The week
scheduled departures · origin local time06121824
Mon
Tue
Wed
Thu
Fri
Sat
Sun
American AirlinesBritish AirwaysDelta Air LinesJetBlue Airways
Each mark is a scheduled departure at its origin-local time, observed operating in the last 7 days. Today is highlighted.
Who flies it
observed on the boards · 7 daysHistory
operated legs · board outcomesActual board outcomes rather than schedules, paired departure and arrival per flight and day.
Full board history, day by day →
Airports right now
live boardsWeather lens
Current conditions put the pressure at BOS: 36% odds of a 15+ minute delay and around +8 min expected when it bites, measured from this route's own weather-matched delay history. See live delays → · Weather risk by airport →
next sweep in 120s
How the London to Boston route actually runs
Pro Flight Search records official board updates for nonstop LHR to BOS flights through the day: schedules, estimates, gate pushes and actual departures. The verdict above comes from operated flights, so it reflects what this route does rather than what the timetable promises.
Planning around a delay? Live airport delays · Weather delay risk map · Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
Cite this data
Journalists, bloggers, and researchers may cite this page with attribution and a link to Pro Flight Search.
Suggested citation
Pro Flight Search — London (LHR) to Boston (BOS) route reliability, measured from operated flights on official airport boards.
Canonical URL
How we measure this →
https://proflightsearch.com/search-flights/LHR-BOS
LHR to BOS questions
Is LHR–BOS running on time right now?
Mostly on schedule. The departure side at LHR is the weaker end, route health score 80/100. The airports section above carries the live status and delay window at both ends.
Morning or evening flight on LHR–BOS?
Operators schedule morning departures around 08:40 and evening departures around 17:35 from LHR. Earlier flights typically land before destination-airport delays accumulate later in the day; check the BOS delay card to confirm conditions when you'd arrive.
How long is the flight from LHR to BOS?
Great-circle distance is 5,239 km. With typical jet cruise speed plus taxi, climb and descent, expect roughly 400–479 min gate-to-gate on this route.
How often does LHR–BOS fly?
5 carriers operate this route, around 49 flights a week between them. Compare carrier days and times in the airline list above.
.