Cheap flights from Heathrow to San Francisco

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The best prices from Heathrow to San Francisco are usually found in February or November, booked 60 days in advance, depart on a Tuesday or Thursday and return on a Tuesday

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

LHR - SFO
Price
£303 - £630
SFO
Temperature
15 - 25 °C
SFO
Rainfall
0 - 120 mm
Popular in July High demand for flights, 38% potential price rise
Cheapest in February Best time to find cheap flights, 22% potential price drop
Average price £337 Average for round-trip flights in syyskuuta 2020
Round-trip from €303 From Heathrow to San Francisco
Flight route prices based on searches on Cheapflights within the last 3 days, monthly prices based on aggregated historical data.
What is the cheapest day to fly return from Heathrow to San Francisco?

Users have found that leaving on a Monday can be a cost-effective option. It’s possible to save up to 10% on your flight compared to booking on days when demand is much higher.

How far in advance should I book a flight from Heathrow to San Francisco?

To save up to 29% on this flight, we recommend booking at least 57 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from Heathrow to San Francisco from £340 1-2 weeks out and tickets from £393 for flights departing within the next 72 hours.

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

Due to multiple factors, expect to potentially pay more when booking in July. For low rates, November can be a great choice for travel to San Francisco. Flights to San Francisco from Heathrow in November are about £387 on average during November, but can be found for as low as £274.

When is the cheapest time to fly from Heathrow to San Francisco (LHR - SFO)?

When flying from Heathrow to San Francisco, the time of day you fly usually plays a role in the price. Save by searching for a flight at midday, which can drop the price by up to 4% versus a flight in the evening.

Cheap flights from Heathrow to San Francisco in September, October 2020

The best prices found for LHR to SFO flights in September, October
21 Oct - 9 Nov
£342pp
LHR
London Heathrow
Multiple airlines
   
2 STOPS
SFO
San Francisco
SFO
San Francisco
Multiple Airlines
   
2 STOPS
LHR
London Heathrow
26 Oct - 10 Nov
£363pp
LHR
London Heathrow
KLM
 
1 STOP
SFO
San Francisco
SFO
San Francisco
KLM
 
1 STOP
LHR
London Heathrow
28 Oct - 4 Nov
£368pp
LHR
London Heathrow
KLM
   
2 STOPS
SFO
San Francisco
SFO
San Francisco
KLM
Direct
LHR
London Heathrow

Heathrow to San Francisco 2020 flight deals

Cheap flights to San Francisco from Heathrow found for this year
21 Oct - 9 Nov
£342pp
LHR
London Heathrow
Multiple airlines
   
2 STOPS
SFO
San Francisco
SFO
San Francisco
Multiple Airlines
   
2 STOPS
LHR
London Heathrow
23 Nov - 7 Dec
£352pp
LHR
London Heathrow
TAP AIR PORTUGAL
 
1 STOP
SFO
San Francisco
SFO
San Francisco
TAP AIR PORTUGAL
 
1 STOP
LHR
London Heathrow
4 Nov - 4 May
£357pp
LHR
London Heathrow
KLM
 
1 STOP
SFO
San Francisco
SFO
San Francisco
KLM
Direct
LHR
London Heathrow

Direct flights to San Francisco from Heathrow

Save time with Heathrow to San Francisco direct flight deals
4 Nov - 4 May
£371pp
LHR
London Heathrow
KLM
Direct
SFO
San Francisco
SFO
San Francisco
KLM
Direct
LHR
London Heathrow
17 Nov - 14 Jan
£372pp
LHR
London Heathrow
KLM
Direct
SFO
San Francisco
SFO
San Francisco
KLM
Direct
LHR
London Heathrow
4 Nov - 24 Nov
£373pp
LHR
London Heathrow
KLM
Direct
SFO
San Francisco
SFO
San Francisco
KLM
Direct
LHR
London Heathrow

Last-minute flights from Heathrow to San Francisco

Late deals on return flights to San Francisco from Heathrow, departing today and this week
5 Oct - 30 Oct
£497pp
LHR
London Heathrow
Multiple airlines
     
3 STOPS
SFO
San Francisco
SFO
San Francisco
Multiple Airlines
     
3 STOPS
LHR
London Heathrow
5 Oct - 17 Oct
£499pp
LHR
London Heathrow
Multiple airlines
     
3 STOPS
SFO
San Francisco
SFO
San Francisco
Multiple Airlines
   
2 STOPS
LHR
London Heathrow
7 Oct - 14 Oct
£505pp
LHR
London Heathrow
Multiple airlines
 
1 STOP
SFO
San Francisco
SFO
San Francisco
Brussels Airlines
Direct
LHR
London Heathrow

One-way flights to San Francisco from Heathrow

The cheapest one-way flights from Heathrow to San Francisco
09:30 - 12:50
Delta
Direct
11h 20m
LHR - SFO
Delta
£241
Delta
11:00 - 14:27
KLM
1 stop
35h 27m
LHR - SFO
KLM
£259
mytrip.com
15:50 - 10:00
Multiple Airlines
2 stops
26h 10m
LHR - SFO
Multiple Airlines
£270
Kiwi.com

Related info for your journey

Useful info, stats and facts about Heathrow to San Francisco flights.

Flight FAQs

From Heathrow to San Francisco

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.

Can I find flights from Heathrow to San Francisco for under £400 on Cheapflights?

Yes, there are multiple flights from Heathrow to San Francisco for under £400. The cheapest flight booked recently is on Multiple Airlines for just £342, but on average you can expect to pay £372.

Are there direct flights from Heathrow to San Francisco for under £400 on Cheapflights?

Cheapflights has 20 direct flights from Heathrow to San Francisco under £400. A good price for a direct flight from Heathrow to San Francisco is less than £403.

Are there last-minute flights available from Heathrow to San Francisco for under £500?

There are currently 20+ open flights from Heathrow to San Francisco within the next 7 days for less than £500.

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 18 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?

For as low as £315, Brussels Airlines can have you in San Francisco from Heathrow in 11h 10m. All flights are typically direct.

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

Flying on TAP AIR PORTUGAL is currently your cheapest option to San Francisco, with prices starting at £276. Additional return tickets that might be worth considering are offered by KLM and Lufthansa, with the lowest prices starting at £280 and £291, respectively. TAP AIR PORTUGAL is 29% cheaper than the average price of flights available within the next 90 days to this destination.

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

To fly one-way, consider booking your trip with KLM, which is currently one of the cheapest options available, starting at £220. TAP AIR PORTUGAL flights start at £226 while deals on Delta start at £233 one-way.

Alternative routes for Heathrow to San Francisco

Destination information for San Francisco

Things to know before you go. Useful info for your trip from Heathrow to San Francisco
Today's exchange rate
£1 = $1.28
Flight duration
10h 49m
Average temperature for September in San Francisco
25.0 °C
Avg rainfall for September in San Francisco
3.0 mm

Airports servicing London

Airports servicing San Francisco

Hourly flight availability from Heathrow to San Francisco

Afternoon Midday to 6 PM 58% of flight departures
Morning 6 AM to midday 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
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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