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Cheap flights from San Francisco to London Heathrow Airport from £264

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/1. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — LHR
16 Nov — 23 Nov1
1 adult
1 adult, Economy

Cheapflights Tip: The best prices from San Francisco to London Heathrow are usually found in October or February, booked 54 days in advance, depart on a Wednesday or Tuesday and return on a Tuesday

Cheap flight deals from San Francisco to Heathrow

Discover tips and strategies to find the most affordable flight options for your journey from San Francisco (SFO) to Heathrow (LHR). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 17 October 2025.

Round-trip from

£438

One-way from

£264

Popular in

June

Cheapest in

October

Average price

£496

Good round-trip deal

£475 or less

Good one-way deal

£286 or less
Lufthansa
  • Lufthansa
  • 4/2-26/2
  • 2 total stops
  • 30h 35m total
  • San Francisco to London
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JetBlue
  • JetBlue
  • 7/1
  • 1 total stop
  • 14h 29m total
  • San Francisco to London
Search Deals
Highest demand for flights based on searches. 17% potential increase in price (£90 potential increase over avg. return price).
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Cheapest flight prices on average. 3% potential price decrease (£16 potential savings vs. average return price).
Search Deals
Average for round-trip flights in October 2025
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Price to beat on a round-trip flight from San Francisco to London Heathrow.
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Price to beat on a one-way flight from San Francisco to London Heathrow.
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Find flight deals from San Francisco to Heathrow

Enter your travel dates to find the best prices.

Cheapest flights from San Francisco to Heathrow
Explore the most affordable flight options available from San Francisco to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 17 October 2025.

Sat 1/1118:00SFO - LHR
1 stop34h 50mMultiple Airlines
Mon 17/1120:05LHR - SFO
1 stop28h 25mMultiple Airlines
Deal found 16/10£438
Mon 24/1100:30SFO - LHR
1 stop22h 35mDelta
Thu 11/1211:40LHR - SFO
Nonstop11h 00mDelta
Deal found 16/10£439
Tue 21/1012:35SFO - LHR
1 stop13h 40mDelta
Wed 4/211:40LHR - SFO
Nonstop11h 00mDelta
Deal found 16/10£439
Tue 25/1113:20SFO - LHR
1 stop14h 30mMultiple Airlines
Thu 11/1209:00LHR - SFO
1 stop15h 30mMultiple Airlines
Deal found 14/10£440
Sun 9/1116:40SFO - LHR
1 stop15h 20mScandinavian Airlines
Fri 14/1106:40LHR - SFO
1 stop15h 55mScandinavian Airlines
Deal found 17/10£441
Thu 6/1116:40SFO - LHR
1 stop15h 20mScandinavian Airlines
Sat 22/1106:40LHR - SFO
1 stop15h 55mScandinavian Airlines
Deal found 15/10£442
Wed 3/1216:30SFO - LHR
Nonstop10h 10mVirgin Atlantic
Fri 19/1211:05LHR - SFO
1 stop14h 59mVirgin Atlantic
Deal found 16/10£442
Tue 11/1119:25SFO - LHR
1 stop28h 40mSWISS
Thu 20/1109:00LHR - SFO
1 stop15h 30mSWISS
Deal found 17/10£443
Mon 10/1116:40SFO - LHR
2 stops18h 10mScandinavian Airlines
Thu 20/1121:05LHR - SFO
2 stops25h 30mScandinavian Airlines
Deal found 15/10£444
Sun 2/1116:40SFO - LHR
2 stops15h 45mScandinavian Airlines
Fri 21/1119:30LHR - SFO
1 stop27h 05mScandinavian Airlines
Deal found 15/10£444
Tue 21/1022:50SFO - LHR
2 stops26h 45mScandinavian Airlines
Wed 4/218:40LHR - SFO
1 stop27h 55mScandinavian Airlines
Deal found 15/10£445
Wed 3/1211:40SFO - LHR
1 stop13h 05mKLM
Thu 18/1211:05LHR - SFO
1 stop14h 59mKLM
Deal found 16/10£446

Cheapflights Fare Finder

 
Customise your flight search to find flights from San Francisco to Heathrow that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 17 October 2025.
Use the filters below to find and compare flights from San Francisco to London Heathrow Airport that are best for you.

Fly from

San Francisco

Fly to

Heathrow

Route

Depart

Return

Price

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Mon 24/11

00:30-07:05

1 stop22h 35m

London Heathrow

Thu 11/12

11:40-14:40

Nonstop11h 00m

£439

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Tue 17/2

13:35-10:00

1 stop12h 25m

London Heathrow

Tue 3/3

06:30-11:50

1 stop13h 20m

£439

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Wed 3/12

16:30-10:40

Nonstop10h 10m

London Heathrow

Fri 19/12

11:05-18:04

1 stop14h 59m

£442

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Wed 28/1

13:00-18:30

2 stops21h 30m

London Heathrow

Tue 3/3

06:40-23:14

2 stops24h 34m

£447

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Wed 31/12

12:26-18:30

2 stops22h 04m

London Heathrow

Thu 15/1

19:30-14:35

1 stop27h 05m

£447

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Sun 9/11

16:40-21:40

1 stop21h 00m

London Heathrow

Sun 16/11

17:00-14:35

1 stop29h 35m

£450

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Mon 27/10

13:50-07:25

Nonstop10h 35m

London Heathrow

Mon 10/11

13:45-16:30

1 stop34h 45m

£450

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Tue 25/11

12:50-07:25

Nonstop10h 35m

London Heathrow

Thu 11/12

06:30-12:40

1 stop14h 10m

£459

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Tue 2/12

00:43-10:15

1 stop25h 32m

London Heathrow

Mon 8/12

20:05-16:30

1 stop28h 25m

£462

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Thu 27/11

16:30-10:40

Nonstop10h 10m

London Heathrow

Thu 4/12

06:30-11:50

1 stop13h 20m

£468

Flights are sorted by cheapest return flights first.

Deals found on 16/10

Showing 1-10 of 24 results
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2
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Best time to book a flight from San Francisco to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from San Francisco with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from San Francisco to London Heathrow Airport

How far ahead should I book a flight from San Francisco to London Heathrow Airport?

Use this chart to determine the optimal time to book a return flight from San Francisco to Heathrow. Price data was last updated on 10 October 2025.

Booking 54 days in advance of your planned departure date is, on average, the best time to get cheap flights from San Francisco to London Heathrow Airport. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from San Francisco to London Heathrow Airport?

Currently, October is the cheapest month in which you can book a flight from San Francisco to London Heathrow Airport (average of £379). Flying from San Francisco to London Heathrow Airport in June is currently the most expensive (average of £601). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from SFO to LHR?

Find hourly flight availability from San Francisco to Heathrow. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 17 October 2025.

When flying from San Francisco to London Heathrow Airport, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 31% versus a flight at midday.

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

Use this chart to determine the cheapest time to fly return from San Francisco to Heathrow. Price data was last updated on 12 October 2025.

Travellers seeking maximum savings on their San Francisco to London Heathrow Airport flight should consider departing on Sunday at midday when fares are most often at their lowest. Monday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing Heathrow

Get insights into the airlines that provide service to Heathrow. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Heathrow. Reviews last updated 17 October 2025.
See what other customers who have flown with Virgin Atlantic, United Airlines, andIberia from San Francisco to London Heathrow Airport have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Virgin Atlantic
7.5
Good
670 reviews
Check prices

Boarding

7.7

Entertainment

7.5

Crew

8.1

Food

6.9

Comfort

7.3

Overall

7.5

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!
Virgin Atlantic
7.5
Good
670 reviews
Virgin Atlantic
7.5
Good
670 reviews
Check prices

Boarding

7.7

Entertainment

7.5

Crew

8.1

Food

6.9

Comfort

7.3

Overall

7.5

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!
United Airlines
7.4
Good
8,982 reviews
Virgin Atlantic
7.5
Good
670 reviews
Check prices

Boarding

7.7

Entertainment

7.5

Crew

8.1

Food

6.9

Comfort

7.3

Overall

7.5

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!
Iberia
7.0
Good
2,994 reviews
Virgin Atlantic
7.5
Good
670 reviews
Check prices

Boarding

7.7

Entertainment

7.5

Crew

8.1

Food

6.9

Comfort

7.3

Overall

7.5

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!
Lufthansa
6.8
Okay
7,497 reviews
Virgin Atlantic
7.5
Good
670 reviews
Check prices

Boarding

7.7

Entertainment

7.5

Crew

8.1

Food

6.9

Comfort

7.3

Overall

7.5

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!
British Airways
6.7
Okay
7,457 reviews
Virgin Atlantic
7.5
Good
670 reviews
Check prices

Boarding

7.7

Entertainment

7.5

Crew

8.1

Food

6.9

Comfort

7.3

Overall

7.5

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!

Related info for your journey

Find useful and relevant information for your journey from San Francisco to Heathrow. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

    For a flight from San Francisco to London Heathrow, you will be flying from San Francisco. San Francisco (SFO) is just 11.8 mi from the center of the city. San Francisco is the only San Francisco airport and it handles 35 outbound flights to London Heathrow per day. 7 airlines have flights to London Heathrow from San Francisco on a regular basis.

  • How long is the flight from San Francisco to London Heathrow Airport?

    Airlines like Delta, KLM, and Virgin Atlantic fly from San Francisco to London Heathrow Airport in about 10h 10m. The time it takes to get you to your destination can typically vary by up to 12h 25m. Airlines will cover a distance of 5350 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines flying from San Francisco to London Heathrow Airport round-trip?

    Currently priced at £355, Scandinavian Airlines will fly you from San Francisco to London Heathrow Airport and back. In addition to Scandinavian Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Virgin Atlantic and KLM - these airlines can fly you to your destination from £368 and £370, respectively. Users have found that Scandinavian Airlines is 37% cheaper than the other options available to this destination.

  • What are the most reliable airlines from San Francisco to London Heathrow Airport?

    Consider KLM (92%), Air France (92%) or Delta (92%) when booking your flight. These represent the most reliable airlines when flying from San Francisco to London Heathrow Airport.

  • What are the cheapest flights from San Francisco to London Heathrow Airport?

    On average you can expect to pay £1,287 for a flight from San Francisco to London Heathrow Airport. The cheapest flight overall is £256 while the most popular route, (San Francisco - London Heathrow) is currently priced at £317.

  • Can I find deals for flights from San Francisco to Heathrow that include hotel bookings?

    Yes. In addition to deals on San Francisco to Heathrow flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from San Francisco to Heathrow?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San Francisco to Heathrow.

  • Can I find deals for business class flights from San Francisco to Heathrow?

    Yes. Cheapflights offers flight deals from San Francisco to Heathrow by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from San Francisco to London Heathrow Airport?

    Currently, October is the cheapest month in which you can book a flight from San Francisco to London Heathrow Airport (average of £379). Flying from San Francisco to London Heathrow Airport in June is currently the most expensive (average of £601). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Travelling to a place near London Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Milton Keynes
Croydon
Slough
Gatwick
Hounslow
Northampton
Luton
Wembley
Deal
Ilford
Crawley
Hayes
Watford
Winchester
Swindon
Chichester
Romford
Ipswich
Brentford
Dartford

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for San Francisco to Heathrow

See prices for flight routes from nearby airports that may be better suited for you.
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Top 7 airlines flying from San Francisco to Heathrow

Discover the top 7 airlines that operate flights from San Francisco to Heathrow. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 17 October 2025.
AirlineCheapestAverageFlexibilityOn-time
Scandinavian AirlinesCheapest£355Average£447FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
Virgin AtlanticCheapest£368Average£553FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
KLMCheapest£370Average£472FlexibilityNo cancel feeOn-time75%
Search KLM flights
British AirwaysCheapest£386Average£522FlexibilityNo cancel feeOn-time70%
Search British Airways flights
United AirlinesCheapest£417Average£597FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
IberiaCheapest£425Average£515FlexibilityNo cancel feeOn-time77%
Search Iberia flights
LufthansaCheapest£430Average£665FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from San Francisco to Heathrow?

Cheapflights helps you search for flights from San Francisco to Heathrow via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from San Francisco to Heathrow?

Cheapflights simply makes it quick and affordable to book flights from San Francisco to Heathrow by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from San Francisco to Heathrow with no change fees?

Yes! Cheapflights helps users easily find flights from San Francisco to Heathrow with no change fees.

Can Cheapflights notify me if prices for flights from San Francisco to Heathrow become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Heathrow from San Francisco today and book when prices fit your budget.

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