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

Loading prices…

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 2026-09-02 → 2026-09-09. Showing recent fares on SFO → LHR — pick a different date in the calendar above or run a live search.

San Francisco → London · 19 fares12-month low · $364

Cached from Travelpayouts · filter & sort below

Showing 16 of 19 results

Cheapest
TAP Portugal · TP 238
OutboundSFO → LHRThu, Sep 10 · 11:30 PM· 14h· 1 stop
ReturnLHR ← SFOSat, Sep 19 · 5:00 AM· 15h 15m· 1 stop
$692
total round-trip
Book →
United Airlines · UA 6615
OutboundSFO → LHRWed, Jan 13 · 5:00 PM· 12h 39m· 2 stops
ReturnLHR ← SFOWed, Jan 27 · 9:00 AM· 14h 10m· 1 stop
$744
total round-trip
Book →
Air Canada · AC 8843
OutboundSFO → LHRMon, Feb 22 · 5:00 PM· 12h 39m· 2 stops
ReturnLHR ← SFOMon, Mar 1 · 9:00 AM· 14h 10m· 1 stop
$750
total round-trip
Book →
TAP Portugal · TP 238
OutboundSFO → LHRSat, Nov 7 · 3:15 AM· 13h 55m· 1 stop
ReturnLHR ← SFOFri, Nov 20 · 6:00 AM· 15h 40m· 1 stop
$767
total round-trip
Book →
Air Canada · AC 567
OutboundSFO → LHRSun, Oct 25 · 9:45 PM· 11h 50m· 1 stop
ReturnLHR ← SFOFri, Oct 30 · 11:45 AM· 11h 10m· Non-stop
$816
total round-trip
Book →
Air Canada · AC 567
OutboundSFO → LHRSun, Mar 7 · 10:45 PM· 11h 33m· 1 stop
ReturnLHR ← SFOThu, Mar 11 · 3:20 PM· 11h 25m· Non-stop
$816
total round-trip
Book →
TAP Portugal · TP 240
OutboundSFO → LHRWed, Sep 9 · 2:20 AM· 15h· 2 stops
ReturnLHR ← SFOTue, Sep 15 · 6:50 PM· 15h 45m· 1 stop
$835
total round-trip
Book →
TAP Portugal · TP 238
OutboundSFO → LHRWed, Aug 19 · 11:35 PM· 13h 55m· 1 stop
ReturnLHR ← SFOSun, Aug 23 · 6:50 PM· 15h 25m· 1 stop
$836
total round-trip
Book →
Alaska Airlines · AS 1340
OutboundSFO → LHRSun, Oct 11 · 12:42 AM· 11h 34m· 1 stop
ReturnLHR ← SFOSat, Oct 17 · 7:50 AM· 12h 20m· 1 stop
$843
total round-trip
Book →
SAS · SK 936
OutboundSFO → LHRFri, Aug 21 · 11:45 PM· 12h 25m· 1 stop
ReturnLHR ← SFOFri, Aug 28 · 5:40 AM· 12h 45m· 1 stop
$861
total round-trip
Book →
JetBlue · B6 434
OutboundSFO → LHRTue, Sep 8 · 1:00 PM· 12h 32m· 1 stop
ReturnLHR ← SFOMon, Sep 14 · 8:10 PM· 16h 30m· 2 stops
$863
total round-trip
Book →
SAS · SK 936
OutboundSFO → LHRFri, Jul 24 · 11:45 PM· 12h 15m· 1 stop
ReturnLHR ← SFOWed, Aug 5 · 5:40 AM· 12h 45m· 1 stop
$870
total round-trip
Book →
Air Canada · AC 756
OutboundSFO → LHRFri, Sep 4 · 3:10 PM· 12h 24m· 1 stop
ReturnLHR ← SFOFri, Sep 25 · 8:50 AM· 12h 30m· 1 stop
$939
total round-trip
Book →
Air Canada · AC 8841
OutboundSFO → LHRFri, Jul 24 · 1:00 PM· 11h 25m· 1 stop
ReturnLHR ← SFOSun, Jul 26 · 1:50 PM· 12h 23m· 1 stop
$1,001
total round-trip
Book →
Air Canada · AC 1769
OutboundSFO → LHRWed, Jul 29 · 11:30 PM· 11h 24m· 1 stop
ReturnLHR ← SFOSun, Aug 9 · 2:05 PM· 11h 55m· 1 stop
$1,250
total round-trip
Book →
Air Canada · AC 758
OutboundSFO → LHRSat, Aug 1 · 6:10 PM· 12h 19m· 1 stop
ReturnLHR ← SFOSun, Aug 9 · 1:05 PM· 13h 46m· 1 stop
$1,255
total round-trip
Book →

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.

Jul
Shoulder
from $870
Aug
Shoulder
from $836
Sep
Low
from $692
Oct
Shoulder
from $816
Nov
Low
from $767
Dec
No data
Jan
Low
from $744
Feb
Low
from $750
Mar
Shoulder
from $816
Apr
No data
May
Peak
from $986
Jun
No data

Cheapest next 12 months: September from $692 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.

Price drop alerts

Email me when San Francisco → London drops.

One email per route, only when fares actually move. Set a ceiling if you only want to hear about big drops.

Also text me when it drops — fastest alert

We’ll never share your email. Unsubscribe in any send.

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

Trip plannerLondon one-stop planTours, transfers, packages, and events for London in one place.StaysWhere to stay in LondonNeighborhood-by-neighborhood picks with live nightly rates.ExperiencesThings to do in LondonCurated sights, food, nightlife, and tours across every district.Getting thereCheap flights to LondonUS gateway fares with the months each route bottoms out.NeighborhoodsLondon by districtLongform breakdowns of where locals eat, drink, and sleep.When to goBest time to visit United KingdomMonth-by-month verdicts on weather, crowds, and prices.