Cheap flights from Heathrow to San Francisco International

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How to find the cheapest flight from
Heathrow (LHR) to San Francisco International (SFO)

All the information you need to plan the best LHR to SFO flight in 2021: compare Heathrow to San Francisco International flight prices with the expected peak season, weather and rainfall in San Francisco International.
LHR - SFO
Price
£284 - £536

Popular in

July

High demand for flights, 34% potential price rise

Cheapest in

November

Best time to find cheap flights, 20% potential price drop

Average price

£536

Average for round-trip flights in July 2021

Round-trip from

£284

From Heathrow to San Francisco International

Flight route prices based on searches on Cheapflights within the last 3 days, monthly prices based on aggregated historical data.
How far in advance should I book a flight from Heathrow to San Francisco International?

Travellers have found it’s best to book a flight 61 days in advance to save up to 41% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 61 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from Heathrow to San Francisco International 1-2 weeks in advance for as low as £388, or £476 for flights within the next 24 hours.

What is the cheapest month to fly from Heathrow to San Francisco International?

February is one of the best times of the year to fly to San Francisco International from Heathrow. Prices for February average £354 per person but you can even find prices for as low as £259. The most expensive prices can be found in the month of July. Opting for a February flight can save you 51% on your journey compared to booking in February

Cheap flights from Heathrow to San Francisco International in July, August 2021

The best prices found for LHR to SFO flights in July, August
27 Aug - 5 Sep
£350pp
LHR
London Heathrow
TAP AIR PORTUGAL
 
1 STOP
SFO
San Francisco
SFO
San Francisco
TAP AIR PORTUGAL
 
1 STOP
LHR
London Heathrow
25 Aug - 19 Jan
£354pp
LHR
London Heathrow
British Airways
Direct
SFO
San Francisco
SFO
San Francisco
British Airways
Direct
LHR
London Heathrow
25 Aug - 19 Jan
£358pp
LHR
London Heathrow
British Airways
 
1 STOP
SFO
San Francisco
SFO
San Francisco
British Airways
Direct
LHR
London Heathrow

Heathrow to San Francisco International 2021 flight deals

Cheap flights to San Francisco International from Heathrow found for this year
8 Nov - 29 Nov
£258pp
LHR
London Heathrow
TAP AIR PORTUGAL
 
1 STOP
SFO
San Francisco
SFO
San Francisco
TAP AIR PORTUGAL
 
1 STOP
LHR
London Heathrow
20 Nov - 4 Dec
£262pp
LHR
London Heathrow
TAP AIR PORTUGAL
 
1 STOP
SFO
San Francisco
SFO
San Francisco
TAP AIR PORTUGAL
 
1 STOP
LHR
London Heathrow
13 Nov - 29 Nov
£273pp
LHR
London Heathrow
TAP AIR PORTUGAL
 
1 STOP
SFO
San Francisco
SFO
San Francisco
TAP AIR PORTUGAL
 
1 STOP
LHR
London Heathrow

Direct flights to San Francisco International from Heathrow

Save time with Heathrow to San Francisco International direct flight deals
25 Aug - 19 Jan
£354pp
LHR
London Heathrow
British Airways
Direct
SFO
San Francisco
SFO
San Francisco
British Airways
Direct
LHR
London Heathrow
8 Nov - 29 Nov
£367pp
LHR
London Heathrow
Finnair
Direct
SFO
San Francisco
SFO
San Francisco
Finnair
Direct
LHR
London Heathrow
8 Nov - 24 Nov
£372pp
LHR
London Heathrow
Finnair
Direct
SFO
San Francisco
SFO
San Francisco
Finnair
Direct
LHR
London Heathrow

Last-minute flights from Heathrow to San Francisco International

Late deals on return flights to San Francisco International from Heathrow, departing today and this week
29 Jul - 13 Aug
£431pp
LHR
London Heathrow
TAP AIR PORTUGAL
 
1 STOP
SFO
San Francisco
SFO
San Francisco
TAP AIR PORTUGAL
 
1 STOP
LHR
London Heathrow
29 Jul - 13 Aug
£440pp
LHR
London Heathrow
TAP AIR PORTUGAL
 
1 STOP
SFO
San Francisco
SFO
San Francisco
TAP AIR PORTUGAL
 
1 STOP
LHR
London Heathrow
28 Jul - 12 Aug
£464pp
LHR
London Heathrow
TAP AIR PORTUGAL
 
1 STOP
SFO
San Francisco
SFO
San Francisco
TAP AIR PORTUGAL
 
1 STOP
LHR
London Heathrow

One-way flights to San Francisco International from Heathrow

The cheapest one-way flights from Heathrow to San Francisco International
10:10 - 18:22
Air Canada
1 stop
16h 12m
LHR - SFO
Air Canada
£264
Gotogate
03:15 - 15:10
Multiple Airlines
2 stops
19h 55m
LHR - SFO
Multiple Airlines
£273
Gotogate
14:40 - 11:50
SWISS
1 stop
29h 10m
LHR - SFO
SWISS
£281
swiss

Related info for your journey

Useful info, stats and facts about <span class="emphasized">Heathrow</span> to <span class="emphasized">San Francisco International</span> flights.

Flight FAQs

From Heathrow to San Francisco International

Are flight prices decreasing from Heathrow to San Francisco due to COVID-19 (coronavirus)?

At this time, Cheapflights has noticed price decreases for many domestic flights due to COVID-19. Travel is not necessarily recommended at this time, and flights may be prone to cancellation: please check with local authorities in both Heathrow and San Francisco for travel alerts, and be sure to review the airline's cancellation policy and travel advisories before booking. For more information, please view our post on what to know about COVID-19 (coronavirus) and travel.

Which airlines flying from London Heathrow to San Francisco have flexible cancellations due to COVID-19?

Some of the carriers operating flights from London Heathrow to San Francisco that may be offering flexible cancellation policies are Virgin Atlantic, British Airways, and United Airlines. Our site will let you filter for all airlines offering greater flexibility due to COVID-19.

What airport do you fly into for flights to San Francisco from London Heathrow?

Located just 11.8 mi from the city centre, San Francisco is the airport most travellers will use when flying to San Francisco from London Heathrow. Booking flights from London Heathrow to San Francisco (SFO) should be relatively easy as there are 12 daily inbound flights from London Heathrow from 19 different airlines.

Can I find flights from Heathrow to San Francisco International for under £291 on Cheapflights?

Yes, there are multiple flights from Heathrow to San Francisco International for under £291. The cheapest flight booked recently is on TAP AIR PORTUGAL for just £258, but on average you can expect to pay £325.

Are there direct flights from Heathrow to San Francisco International for under £364 on Cheapflights?

Cheapflights has 20 direct flights from Heathrow to San Francisco International under £364. A good price for a direct flight from Heathrow to San Francisco International is less than £386.

Are there last-minute flights available from Heathrow to San Francisco International for under £436?

There are currently 20+ open flights from Heathrow to San Francisco International within the next 7 days for less than £436.

Does it rain more in Heathrow or San Francisco?

When travelling, it's generally smart to pack in preparation for rain or any other conditions that may arise. The rainfall in Heathrow is roughly greater than that of San Francisco. You can assume this to be the case over the next 17 days.

Is Heathrow weather warmer or cooler than San Francisco?

Expect the weather to be around 25 °C on average in September. As the temperature peaks, try to get your plans done early, as flight price and availability will have an impact on your travels. The climate in San Francisco is generally hotter than in Heathrow.

How long does is the flight from Heathrow to San Francisco International?

For as low as £354, British Airways can have you in San Francisco International from Heathrow in 11h 05m. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

What are the cheapest airlines to flying from Heathrow to San Francisco International return?

TAP AIR PORTUGAL, at £258, was found to be the cheapest airline from Heathrow to San Francisco International.Alternate airlines flying return to your destination include British Airways and Virgin Atlantic. TAP AIR PORTUGAL is currently priced 27% below the average price you’ll pay for this route.

What are the cheapest airlines to fly from Heathrow to San Francisco International one-way?

For one-way options, check prices for British Airways. According to our data, you can fly for as low as £160. Users have also found prices from £260 and £263 on British Airways and Virgin Atlantic, respectively.

Alternative routes for Heathrow to San Francisco International

See prices for flight routes from nearby airports that may be better suited for you.

Destination information for San Francisco International

Things to know before you go - useful duration and weather info for your trip from Heathrow to San Francisco International.
Today's exchange rate
£1 = $1.38
Flight duration
10h 47m

Airports servicing London

Airports servicing San Francisco

Top 10 airlines flying from Heathrow to San Francisco International

The chart below displays the airlines Cheapflights users travelling from Heathrow to San Francisco International choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
Airline Cheapest Average Flexibility On-time COVID-19 safety
Brussels Airlines
£351 £516 No cancel fee N/A
Search Brussels Airlines flights
Air France
£369 £550 No cancel fee 77%
Search Air France flights
SWISS
£377 £559 No cancel fee 79%
Search SWISS flights
American Airlines
£341 £561 No cancel fee 71%
Search American Airlines flights
KLM
£330 £561 No cancel fee 75%
Search KLM flights
Iberia
£365 £564 No cancel fee 77%
Search Iberia flights
Finnair
£348 £569 No cancel fee 76%
Search Finnair flights
TAP AIR PORTUGAL
£410 £590 No cancel fee N/A
Search TAP AIR PORTUGAL flights
Air Canada
£342 £614 No cancel fee 67%
Search Air Canada flights
Norwegian Air UK
£385 £669 No cancel fee N/A
Search Norwegian Air UK flights

Hourly flight availability from Heathrow to San Francisco International

See what time of day planes typically take off from Heathrow towards San Francisco International.
Morning 6 AM to midday 58% of flight departures
Afternoon Midday to 6 PM 41% of flight departures
Early morning Midnight to 6 AM 1% of flight departures
Evening 6 PM to midnight 0% of flight departures
Midnight
6 AM
Noon
6 PM
Weekly flight availability
from Heathrow to San Francisco International
See how many times per day planes take to the skies headed from Heathrow to San Francisco International.
Sunday
12 daily flights
Monday
12 daily flights
Tuesday
12 daily flights
Wednesday
12 daily flights
Thursday
12 daily flights
Friday
12 daily flights
Saturday
12 daily flights
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