Cheap flights from Heathrow to San Francisco

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

All the information you need to plan the best LHR to SFO flight in 2021: compare Heathrow to San Francisco flight prices with the expected peak season, weather and rainfall in San Francisco.
LHR - SFO
Price
£283 - £534
SFO
Temperature
15 - 25 °C
SFO
Precipitation
0 - 120 mm

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

£311

Average for round-trip flights in September 2021

Round-trip from

£283

From London Heathrow to San Francisco

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 London Heathrow Airport to San Francisco?

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 London Heathrow Airport to San Francisco 1-2 weeks in advance for as low as £387, or £474 for flights within the next 24 hours.

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

February is one of the best times of the year to fly to San Francisco from London Heathrow Airport. Prices for February average £352 per person but you can even find prices for as low as £258. 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 London Heathrow Airport to San Francisco (LHR - SFO)?

When flying from London Heathrow Airport to San Francisco, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Cheap flights from Heathrow to San Francisco in September, October 2021

The best prices found for LHR to SFO flights in September, October
7 Oct - 15 Oct
£258pp
LHR
London Heathrow
TAP AIR PORTUGAL
 
1 STOP
SFO
San Francisco
SFO
San Francisco
TAP AIR PORTUGAL
 
1 STOP
LHR
London Heathrow
15 Oct - 22 Oct
£264pp
LHR
London Heathrow
TAP AIR PORTUGAL
 
1 STOP
SFO
San Francisco
SFO
San Francisco
TAP AIR PORTUGAL
 
1 STOP
LHR
London Heathrow
23 Sep - 21 Oct
£266pp
LHR
London Heathrow
TAP AIR PORTUGAL
 
1 STOP
SFO
San Francisco
SFO
San Francisco
TAP AIR PORTUGAL
 
1 STOP
LHR
London Heathrow

London Heathrow to San Francisco 2021 flight deals

Cheap flights to San Francisco from Heathrow found for this year
10 Nov - 20 Nov
£258pp
LHR
London Heathrow
TAP AIR PORTUGAL
 
1 STOP
SFO
San Francisco
SFO
San Francisco
TAP AIR PORTUGAL
 
1 STOP
LHR
London Heathrow
7 Oct - 15 Oct
£258pp
LHR
London Heathrow
TAP AIR PORTUGAL
 
1 STOP
SFO
San Francisco
SFO
San Francisco
TAP AIR PORTUGAL
 
1 STOP
LHR
London Heathrow
6 Nov - 4 Dec
£259pp
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 from Heathrow

Save time with Heathrow to San Francisco direct flight deals
16 Mar - 23 Mar
£300pp
LHR
London Heathrow
Virgin Atlantic
Direct
SFO
San Francisco
SFO
San Francisco
Virgin Atlantic
Direct
LHR
London Heathrow
1 Mar - 8 Mar
£303pp
LHR
London Heathrow
Virgin Atlantic
Direct
SFO
San Francisco
SFO
San Francisco
Virgin Atlantic
Direct
LHR
London Heathrow
16 Mar - 23 Mar
£306pp
LHR
London Heathrow
Lufthansa
Direct
SFO
San Francisco
SFO
San Francisco
Lufthansa
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
23 Sep - 21 Oct
£266pp
LHR
London Heathrow
TAP AIR PORTUGAL
 
1 STOP
SFO
San Francisco
SFO
San Francisco
TAP AIR PORTUGAL
 
1 STOP
LHR
London Heathrow
24 Sep - 22 Oct
£307pp
LHR
London Heathrow
TAP AIR PORTUGAL
 
1 STOP
SFO
San Francisco
SFO
San Francisco
TAP AIR PORTUGAL
 
1 STOP
LHR
London Heathrow
23 Sep - 24 Oct
£311pp
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 from London Heathrow

The cheapest one-way flights from Heathrow to San Francisco
02:45 - 17:27
Air Canada
2 stops
22h 42m
LHR - SFO
Air Canada
£251
mytrip.com
02:30 - 07:45
Virgin Atlantic
1 stop
13h 15m
LHR - SFO
Virgin Atlantic
£261
Travel2Be
04:40 - 11:50
SWISS
1 stop
15h 10m
LHR - SFO
SWISS
£277
swiss

Related info for your journey

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

Flight FAQs

From Heathrow to San Francisco

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 17 daily inbound flights from London Heathrow from 19 different airlines.

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.

Are flight prices decreasing from London Heathrow Airport 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 London Heathrow Airport 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 London Heathrow Airport to San Francisco for under £300 on Cheapflights?

Yes, there are multiple flights from London Heathrow Airport to San Francisco for under £300. The cheapest flight booked recently is on TAP AIR PORTUGAL for just £258, but on average you can expect to pay £274.

Are there direct flights from London Heathrow Airport to San Francisco for under £300 on Cheapflights?

Cheapflights has 20 direct flights from London Heathrow Airport to San Francisco under £300. A good price for a direct flight from London Heathrow Airport to San Francisco is less than £330.

Are there last-minute flights available from London Heathrow Airport to San Francisco for under £300?

There are currently 20+ open flights from London Heathrow Airport to San Francisco within the next 7 days for less than £300.

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

Our cheapest airline available from London Heathrow Airport to San Francisco is TAP AIR PORTUGAL. Our recent data shows that you can find tickets from as low as £258 on this airline. Additional options worth looking into are Lufthansa and Air Canada, starting at £261 and £282 round-trip. TAP AIR PORTUGAL is priced at 27% lower than the current average price of a flight leaving 3 months from now.

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

One-way options have recently been found by users for as low as £251 on Air Canada. Other airlines that offer cheap prices include Virgin Atlantic from £261 and TAP AIR PORTUGAL from £264 one-way.

COVID Restrictions

View COVID Travel Restrictions for San Francisco, CA

Do I need a COVID test to fly to San Francisco from Heathrow?

Information is based on travel restrictions from London Heathrow to San Francisco

Most visitors from London Heathrow will not be allowed to enter San Francisco.

COVID-19 testing requirements
Visitors from London Heathrow must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 72 hours before departing to San Francisco.

Quarantine requirements
Visitors from London Heathrow are not required to quarantine after entering San Francisco.

Do I need a test to fly back to Heathrow from San Francisco?

Returning to London Heathrow from San Francisco

COVID-19 testing requirements
Visitors from San Francisco must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 72 hours before departing to London Heathrow.

Quarantine requirements
Visitors from San Francisco are not required to quarantine after entering London Heathrow.

Hide COVID Travel Restrictions for San Francisco, CA

Alternative routes for Heathrow to San Francisco

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

Destination information for San Francisco

Things to know before you go - useful duration and weather info for your trip from Heathrow to San Francisco.
Today's exchange rate
£1 = $1.39
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

Top 10 airlines flying from London Heathrow to San Francisco

The chart below displays the airlines Cheapflights users travelling from Heathrow to San Francisco 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

See what time of day planes typically take off from Heathrow towards San Francisco.
Afternoon Midday to 6 PM 66% of flight departures
Morning 6 AM to midday 33% 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
See how many times per day planes take to the skies headed from Heathrow to San Francisco.
Sunday
17 daily flights
Monday
17 daily flights
Tuesday
17 daily flights
Wednesday
17 daily flights
Thursday
17 daily flights
Friday
17 daily flights
Saturday
17 daily flights
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