How long is the flight from San Francisco to London?

Non-stop flights on SFO → LHR are typically around 10 hours. Connecting itineraries add 3–8 hours depending on the hub and layover.

Which airlines fly from San Francisco to London?

The main carriers on this route are British Airways, Virgin Atlantic, United, American. Codeshare and one-stop options add several more — the filter panel above shows every airline in the current fare set.

When is the cheapest time to fly from San Francisco to London?

Historically the lowest fares land in January, February, November. Summer (mid-June through mid-August) and the Christmas / New Year window are always peak. Mid-week departures (Tuesday–Thursday) typically beat weekend prices by 10–20%.

How far ahead should I book San Francisco to London?

Six to ten weeks ahead is the sweet spot for this route. Inside three weeks, fares tend to spike as airlines sell to last-minute business travellers. Award availability often opens 10–11 months out if you're booking on miles.

Can I book directly on destination.com?

The Book button on each fare opens the airline or OTA (Trip.com, Kiwi, Expedia, Booking, Priceline, etc.) that's actually selling that ticket. You complete payment there at the same price you saw here — we never add a markup.

SFO → LHR

San Francisco to London flights.

Live cached fares on San Francisco (SFO) → London (LHR), refreshed every 30 minutes. Non-stop and connecting itineraries side by side — compare airlines, times and stops, then book in one click.

Flying time
~10h non-stop
Airlines
British Airways, Virgin Atlantic, United, American
Cheapest months
January, February, November

Flex dates · cheapest nearby

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Read our best-time-to-book guide for SFO → LHR →Target price, booking window, weekday pattern.

See 30-day price history for SFO → LHR →Median fare, lows, and best-day patterns.

No cached fares for exactly 2026-12-06 → 2026-12-13. Showing recent fares on SFO → LHR — pick a different date in the calendar above or run a live search.

San Francisco → London · 4 fares12-month low · $313

Cached from Travelpayouts · filter & sort below

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Try a nearby airport

Thin routes often have more options from a neighbouring airport.

Oakland (OAK) → London (LHR)

nearby origin

San Jose (SJC) → London (LHR)

nearby origin

San Francisco (SFO) → London (LGW)

nearby destination

About San Francisco → London

5-6 daily non-stops. Virgin Atlantic Upper Class and BA Club are the strongest premium-award options on the west-coast transatlantic.

Typical non-stop flying time is around 10 hours. Major carriers on this route include British Airways, Virgin Atlantic, United, American. Fares are usually cheapest in January, February, November — book 6–10 weeks ahead and avoid school-holiday peaks (late June–August, Christmas–New Year) for the best pricing.

Month-by-month price guide: San Francisco to London

Live cheapest round-trip fare cached on SFO → LHR for each of the next 12 months. Tap any month and run a live search to confirm.

Oct
Low
from $620
Nov
Peak
from $854
Dec
Shoulder
from $728
Jan
No data
Feb
Low
from $462
Mar
No data
Apr
No data
May
No data
Jun
No data
Jul
Peak
from $1018
Aug
No data
Sep
No data

Cheapest next 12 months: February from $462 round-trip. Run a live search →

Booking window tip

Long-haul fares are most predictable when booked 10-16 weeks ahead. Inside six weeks expect sharp increases, especially in premium cabins. If you're paying with miles, search 330+ days ahead when award inventory first loads.

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Where to stay

Once you’ve booked the flight, pick a London neighbourhood.

See where to stay in London →

Questions, answered

How long is the flight from San Francisco to London?
Non-stop flights on SFO → LHR are typically around 10 hours. Connecting itineraries add 3–8 hours depending on the hub and layover.
Which airlines fly from San Francisco to London?
The main carriers on this route are British Airways, Virgin Atlantic, United, American. Codeshare and one-stop options add several more — the filter panel above shows every airline in the current fare set.
When is the cheapest time to fly from San Francisco to London?
Historically the lowest fares land in January, February, November. Summer (mid-June through mid-August) and the Christmas / New Year window are always peak. Mid-week departures (Tuesday–Thursday) typically beat weekend prices by 10–20%.
How far ahead should I book San Francisco to London?
Six to ten weeks ahead is the sweet spot for this route. Inside three weeks, fares tend to spike as airlines sell to last-minute business travellers. Award availability often opens 10–11 months out if you're booking on miles.
Can I book directly on destination.com?
The Book button on each fare opens the airline or OTA (Trip.com, Kiwi, Expedia, Booking, Priceline, etc.) that's actually selling that ticket. You complete payment there at the same price you saw here — we never add a markup.

Other ways to reach London

If your plans are flexible on the origin, these alternate departure airports also serve London on the routes we track.

Other popular routes

Keep planning

Complete your London trip

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