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| Flight Option | Approximate Scheduled Duration | Route Code |
|---|---|---|
| San Francisco to London Heathrow nonstop | 10 hours 50 minutes | SFO → LHR |
| London Heathrow to San Francisco nonstop | 11 hours 30 minutes | LHR → SFO |
| San Francisco to London with a connection | Depends on flight segments and layovers | SFO → Transfer airport → London |
Choosing a Departure Around Your London Arrival
Afternoon and evening nonstop flights from San Francisco reach London the following day. Compare the flight duration and local arrival time with your plans, allowing extra time for passport control, baggage collection and travel into the city. If you arrive early, confirm your hotel’s check-in time before scheduling your first activity.
Getting From Heathrow to Your London Destination
From London Heathrow (LHR), you can continue by train, Underground, bus, coach or taxi. Choose your transport based on your accommodation’s location, luggage and arrival time. Share your flight number and terminal with your pickup driver, or allow extra time after arrival before a separately booked train or coach.
The additional travel time depends on where you connect and how long you wait between flights. A connection can also involve a longer route, so the layover alone does not explain the difference.
For example, a hypothetical 14-hour connecting itinerary takes 3 hours 10 minutes longer than a nonstop flight scheduled for 10 hours 50 minutes. Compare the total duration of both options for your departure date to see how much time the connection adds.
Aircraft and cruising speed:
Aircraft performance and the speed selected for the flight can create small differences in travel time.
Airborne holding:
A flight may need to wait in a holding pattern before landing, adding time to the journey.
Runway use:
Different departure and arrival runways can change taxiing distances and the approach path.
Schedule allowances:
Airlines build expected taxiing time and typical operating conditions into their schedules, so published durations can differ.
Seasonal conditions:
Changes in prevailing winds and weather can affect both planned schedules and actual flight time
A flight leaving San Francisco late may recover some time during the journey, depending on winds, routing and the time allowed in its schedule. However, an on-time arrival is not guaranteed. On travel day, follow the airline’s updated arrival estimate. This is more useful for coordinating your plans than adding the departure delay to the original arrival time
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