Cheap flights from Heathrow to San Francisco International

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The best prices from Heathrow to San Francisco International are usually found in November or February, 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 International (SFO)

LHR - SFO
Price
£276 - £521

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

£277

Average for round-trip flights in February 2021

Round-trip from

£276

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.
What is the cheapest day to fly return from Heathrow to San Francisco International?

Flights from Heathrow to San Francisco International are generally found to be more expensive on Saturday. This shouldn't discourage you from searching, as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to San Francisco International.

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 £378, or £463 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 £344 per person but you can even find prices for as low as £252. 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

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

It’s typically best to fly out from Heathrow to San Francisco International at midday. Doing so could potentially save you 5% on the flight price compared to flying in the evening, which is usually more expensive.

Cheap flights from Heathrow to San Francisco International in February, March 2021

30 Mar - 7 Apr
£340pp
LHR
London Heathrow
TAP AIR PORTUGAL
 
1 STOP
SFO
San Francisco
SFO
San Francisco
TAP AIR PORTUGAL
 
1 STOP
LHR
London Heathrow
28 Mar - 9 Apr
£344pp
LHR
London Heathrow
TAP AIR PORTUGAL
 
1 STOP
SFO
San Francisco
SFO
San Francisco
TAP AIR PORTUGAL
 
1 STOP
LHR
London Heathrow
31 Mar - 25 Apr
£347pp
LHR
London Heathrow
TAP AIR PORTUGAL
 
1 STOP
SFO
San Francisco
SFO
San Francisco
TAP AIR PORTUGAL
 
1 STOP
LHR
London Heathrow

Heathrow to San Francisco International 2021 flight deals

22 Apr - 26 Apr
£334pp
LHR
London Heathrow
Multiple airlines
   
2 STOPS
SFO
San Francisco
SFO
San Francisco
Multiple Airlines
   
2 STOPS
LHR
London Heathrow
30 Mar - 7 Apr
£340pp
LHR
London Heathrow
TAP AIR PORTUGAL
 
1 STOP
SFO
San Francisco
SFO
San Francisco
TAP AIR PORTUGAL
 
1 STOP
LHR
London Heathrow
16 Apr - 25 Apr
£341pp
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

12 May - 27 May
£380pp
LHR
London Heathrow
Brussels Airlines
Direct
SFO
San Francisco
SFO
San Francisco
Brussels Airlines
Direct
LHR
London Heathrow
11 May - 26 May
£381pp
LHR
London Heathrow
Virgin Atlantic
Direct
SFO
San Francisco
SFO
San Francisco
Virgin Atlantic
Direct
LHR
London Heathrow
27 Apr - 10 May
£382pp
LHR
London Heathrow
Brussels Airlines
Direct
SFO
San Francisco
SFO
San Francisco
Brussels Airlines
Direct
LHR
London Heathrow

Last-minute flights from Heathrow to San Francisco International

7 Mar - 28 Mar
£413pp
LHR
London Heathrow
Lufthansa
   
2 STOPS
SFO
San Francisco
SFO
San Francisco
Lufthansa
 
1 STOP
LHR
London Heathrow
7 Mar - 31 Mar
£431pp
LHR
London Heathrow
Multiple airlines
   
2 STOPS
SFO
San Francisco
SFO
San Francisco
Lufthansa
 
1 STOP
LHR
London Heathrow
7 Mar - 28 Mar
£435pp
LHR
London Heathrow
Lufthansa
 
1 STOP
SFO
San Francisco
SFO
San Francisco
Lufthansa
 
1 STOP
LHR
London Heathrow

One-way flights to San Francisco International from Heathrow

01:25 - 13:30
Virgin Atlantic
2 stops
20h 05m
LHR - SFO
Virgin Atlantic
04:30 - 11:30
Lufthansa
1 stop
15h 00m
LHR - SFO
Lufthansa
03:05 - 08:45
Multiple Airlines
2 stops
37h 40m
LHR - SFO
Multiple Airlines
£252
Kiwi.com

Related info for your journey

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.

What safety measures are being taken by airlines flying from London Heathrow to San Francisco to control the spread of COVID-19?

New policies can now be found on Delta to help keep travellers safe while flying. Airline carriers are regularly disinfecting and sanitising their aircraft. Masks are provided and are mandatory while on board. Pre-flight testing for symptoms and antibodies, alongside socially-distanced seating (for a limited time) will work towards keeping travellers safer while flying from London Heathrow to San Francisco. Policies will vary by airline.

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.

Can I find flights from Heathrow to San Francisco International for under £354 on Cheapflights?

Yes, there are multiple flights from Heathrow to San Francisco International for under £354. The cheapest flight booked recently is on Multiple Airlines for just £334, but on average you can expect to pay £351.

Are there direct flights from Heathrow to San Francisco International for under £424 on Cheapflights?

Cheapflights has 20 direct flights from Heathrow to San Francisco International under £424. A good price for a direct flight from Heathrow to San Francisco International is less than £393.

Are there last-minute flights available from Heathrow to San Francisco International for under £424?

There are currently 20+ open flights from Heathrow to San Francisco International within the next 7 days for less than £424.

What days are direct flights available from Heathrow to San Francisco?

Direct flights are available for this route on the following days: Saturday.

How many flights depart from Heathrow to San Francisco International on average per day?

1 flight departure from London Heathrow to San Francisco per day on average.
Morning (6am - Midday) - 100% of flight departures

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 less than San Francisco. You can assume this to be the case over the next 20 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 £381, Brussels Airlines can have you in San Francisco International from Heathrow in 11h 15m. Heathrow and San Francisco International are separated by a distance of 5383 mi. 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 £341, was found to be the cheapest airline from Heathrow to San Francisco International.Alternate airlines flying return to your destination include Virgin Atlantic and Air Canada. TAP AIR PORTUGAL is currently priced 1% 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 Virgin Atlantic. According to our data, you can fly for as low as £244. Users have also found tickets on Lufthansa for as little as £249.

Alternative routes for Heathrow to San Francisco International

Destination information for San Francisco International

Today's exchange rate
£1 = $1.42
Flight duration
10h 57m

Airports servicing London

Airports servicing San Francisco

Top 10 airlines flying from Heathrow to San Francisco International

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

Afternoon Midday to 6 PM 72% of flight departures
Morning 6 AM to midday 28% of flight departures
Early morning Midnight to 6 AM 0% 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
Sunday
3 daily flights
Monday
0 flights
Tuesday
0 flights
Wednesday
5 daily flights
Thursday
0 flights
Friday
5 daily flights
Saturday
0 flights
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