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Cheap flights from London to San Francisco

One-way from £310, found by travellers in the last 7 days. Aviasales checks the live price.

Departure
Return
Prices for nearby dates
Wed, Dec 2Any priceThu, Dec 3Any priceFri, Dec 4£334Sat, Dec 5£310Sun, Dec 6Any priceMon, Dec 7£313Tue, Dec 8Any priceWed, Dec 9Any price

Cheapest one-way tickets

Recent finds on different dates, for 1 adult. Baggage and fare rules are shown on Aviasales, where the price is checked live.

Cheapest
£310
Ryanair, flight FR 9044Found 5 days ago, 1 adult
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21:45LondonSat, Dec 5
Travel time 16h 55m, 2 stopsSTNSFO
06:40San FranciscoSun, Dec 6
£313
Ryanair, flight FR 4693Found 2 days ago, 1 adult
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08:10LondonMon, Dec 7
Travel time 15h 25m, 2 stopsSTNSFO
15:35San FranciscoMon, Dec 7
£334
United Airlines, flight UA 9761Found 5 days ago, 1 adult
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09:00LondonFri, Dec 4
Travel time 14h 10m, 1 stopLHRSFO
15:10San FranciscoFri, Dec 4
£351
Ryanair, flight FR 210Found 7 days ago, 1 adult
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12:05LondonTue, Nov 3
Travel time 14h 25m, 2 stopsSTNSFO
18:30San FranciscoTue, Nov 3
£359
Wizz Air UK, flight W9 5377Found 5 days ago, 1 adult
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12:15LondonFri, Dec 11
Travel time 17h 5m, 2 stopsLTNSFO
21:20San FranciscoFri, Dec 11

Round trips

The cheapest return tickets found recently, price for the whole trip.

Plan the rest of the trip

  • Mobile data in United StatesTravel eSIM from $4, installed before you fly.
    Compare plans
  • Getting from the airportTransfers and car hire in San Francisco, booked ahead at a fixed price.
    See options
  • Things to do in San FranciscoPopular tours from $39 per person.
    See ideas
  • Travel insuranceTravel insurance quotes for United States from EKTA; check what each policy covers.
    Get a quote
  • Flight delayed?Arrived 3+ hours late, cancelled at short notice or bumped? Up to £520 per person under UK261.
    Check

Price calendar

The lowest one-way fare found for each day over the next 60 days. A dash means no recent fare; you can still pick that day.

October 2026

MoTuWeThFrSaSu1234£6895£7906£6537£9548£4509£67410–11–12£44913£44114–15£45416–17–18–19–20–21£36922–23–24–25–26–27–28–29–30–31£388

November 2026

MoTuWeThFrSaSu1–2–3£3514–5–6–7–8–9–10–11–12–13–14–15–16–17–18–19–20–21–22–23–24–25–26–27–28–29–30–

December 2026

MoTuWeThFrSaSu1–2–345678910111213141516171819202122232425262728293031
£351 or lessGreen: the cheapest fifth of fares on this route. Lowest in these 60 days: Nov 3, £351.

Lowest fares by month

In the fares found this week, December has the lowest: from £310 one-way, against £834 in January 2027. Pick a month to see its cheapest date.

£0£500£1,000OctNov£310DecJanFebMarAprMayJunJulAugSep
Show as a table
MonthCheapest one-wayDateStops
October£369Wed, Oct 212 stops
November£351Tue, Nov 32 stops
December£310Sat, Dec 52 stops
January 2027£834Sat, Jan 23 stops
February 2027—
March 2027—
April 2027—
May 2027—
June 2027—
July 2027—
August 2027—
September 2027—

Questions travellers ask

What is the cheapest month to fly from London to San Francisco?

In the fares found this week, December has the lowest: from £310 one-way, against £834 in January 2027.

Are there direct flights from London to San Francisco?

None of the fares found recently are nonstop. The cheapest options have at least one stop.

Which day of the week is cheapest to fly?

In the fares we have, Friday departures are the cheapest, with a typical lowest fare of £359. Thursday is the priciest at about £454.

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