Direct flights from San Francisco (SFO) to London (LHR): 224 nonstop departures observed each week across 18 airlines. 60% of the last 5 tracked flights arrived within 15 minutes of schedule. The median arrival is 8 minutes early. No cancellations were recorded across the 21 tracked flights. The nonstop covers 8,615 km, an estimated 11 hours 33 minutes in the air. Measured by Pro Flight Search from live flight boards at San Francisco and London. Updated 1 November 2026 at 01:40 UTC.
The SFO board at 18:40 shows departure at 19:40 instead of 17:40, gate A12 (TITM).
The SFO board at 18:40 shows departure at 19:40 instead of 17:40, gate A12 (TITM).
Checked SFO board 18:40 · LHR board 01:24
of the last 5 tracked SFO → LHR flights arrived within 15 minutes
Median arrival delay is −8 min. 0 of 21 tracked legs cancelled in the sample. Will a delayed flight be cancelled? →
Flights EI8984 varies daily · EI8986 varies daily
Flights AC5448 varies daily · AC5376 varies daily
Flights AF9650 varies daily
Flights NZ9830 varies daily · NZ4162 varies daily · NZ9854 varies daily
Flights AS5278 varies daily · AS5280 varies daily
Flights AA6995 varies daily · AA6997 varies daily
Flights OS7856 varies daily · OS7858 varies daily
Flights SN9105 varies daily · SN9100 varies daily
Flights DL5964 varies daily
Flights AY5524 varies daily · AY5526 varies daily
Flights IB3625 varies daily · IB3627 varies daily
Flights KL4813 varies daily
Flights LH9375 varies daily · LH9379 varies daily
Flights SV4830 varies daily
Flights LX3069 varies daily · LX3049 varies daily
Flights VS20 varies daily
Actual board outcomes rather than schedules, paired departure and arrival per flight and day.
Conditions are tightest at SFO: a 42% chance of a 15+ minute delay. In this weather, the more delayed of the two airports is typically about +11 min. Both figures come from the two airports' delay records in similar weather. See live delays → · Weather risk by airport →
next sweep in 120s
Pro Flight Search records official board updates for nonstop SFO to LHR 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
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Pro Flight Search: San Francisco (SFO) to London (LHR) route reliability, measured from operated flights on official airport boards.
https://proflightsearch.com/search-flights/SFO-LHR
Smooth skies ahead. Both endpoints currently score the same, route health score 83/100. The airports section above carries the live status and delay window at both ends.
Great-circle distance is 8,615 km. With typical jet cruise speed plus taxi, climb and descent, expect roughly 638–768 min gate-to-gate on this route.
18 carriers operate this route, around 224 flights a week between them. Compare carrier days and times in the airline list above.
A blend of departure-side delay at SFO and arrival-side delay at LHR, computed from rolling delay windows (refreshed every 40 minutes) with a daily-rollup fallback. Current MVFR, IFR, or LIFR endpoint weather caps the score when flight rules can limit throughput. Higher is healthier: 100 means operations are clean at both ends.
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