Cheap flights from London Heathrow Airport to San Francisco from £390
This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 20/11. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SFO
2 Nov — 9 Nov1
Return
1 adult
Economy
Return
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from London Heathrow to San Francisco are usually found in February or January, booked 69 days in advance, depart on a Wednesday or Thursday and return on a Wednesday
Cheap flight deals from Heathrow to San Francisco
Enter your travel dates to find the best prices.
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Best
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One-way
Cheapest flights from Heathrow to San Francisco
Explore the most affordable flight options available from Heathrow to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 3 October 2026.
Fri 20/1110:05 -
Nonstop11h 15m
Sat 28/1116:40 -
Nonstop10h 35m
Deal found 29/9£390
Tue 6/1013:00 -
Nonstop10h 55m
Thu 15/1012:55 -
Nonstop10h 30m
Deal found 29/9£390
Thu 3/1209:00 -
1 stop15h 30m
Mon 7/1212:20 -
1 stop17h 10m
Deal found 29/9£391
Thu 8/1016:15 -
Nonstop11h 00m
Wed 21/1016:45 -
Nonstop10h 25m
Deal found 29/9£392
Thu 8/1015:00 -
1 stop16h 20m
Wed 21/1016:30 -
1 stop12h 50m
Deal found 29/9£393
Fri 9/1007:25 -
1 stop15h 05m
Mon 12/1014:25 -
1 stop20h 55m
Deal found 29/9£393
Thu 8/1010:35 -
Nonstop11h 00m
Mon 12/1019:45 -
Nonstop10h 25m
Deal found 29/9£394
Fri 16/1015:05 -
1 stop35h 26m
Tue 20/1016:30 -
1 stop12h 50m
Deal found 29/9£395
Fri 23/1006:30 -
1 stop16h 50m
Wed 4/1112:50 -
Nonstop10h 35m
Deal found 29/9£396
Thu 8/1007:00 -
2 stops17h 15m
Wed 21/1019:35 -
1 stop28h 20m
Deal found 28/9£396
Thu 8/1007:30 -
1 stop20h 20m
Thu 15/1012:55 -
Nonstop10h 30m
Deal found 29/9£397
Tue 27/1010:05 -
Nonstop11h 15m
Tue 3/1112:50 -
Nonstop10h 35m
Deal found 29/9£398
Best flights from Heathrow to San Francisco
Discover carefully curated flight deals from Heathrow to San Francisco that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 3 October 2026.
Wed 28/1011:10 -
2 stops19h 46m
Wed 11/1114:45 -
1 stop13h 05m
Deal found 28/9£394
Thu 15/1016:15 -
Nonstop11h 00m
Wed 28/1017:40 -
Nonstop10h 35m
Deal found 29/9£403
Tue 13/1017:00 -
1 stop13h 49m
Sat 24/1015:21 -
1 stop13h 59m
Deal found 1/10£431
Wed 2/1206:30 -
1 stop13h 15m
Sun 13/1207:00 -
1 stop15h 50m
Deal found 3/10£452
Sat 21/1106:30 -
1 stop13h 15m
Sat 28/1116:40 -
Nonstop10h 15m
Deal found 1/10£452
Fri 6/1114:25 -
2 stops34h 05m
Sun 29/1119:25 -
2 stops18h 00m
Deal found 29/9£504
Sun 25/1006:40 -
1 stop16h 10m
Thu 29/1017:45 -
2 stops20h 35m
Deal found 30/9£552
Wed 7/1013:00 -
Nonstop11h 00m
Mon 12/1012:55 -
Nonstop10h 30m
Deal found 28/9£404
Thu 24/1214:45 -
1 stop28h 47m
Wed 17/207:00 -
1 stop21h 20m
Deal found 2/10£441
Thu 8/1013:00 -
Nonstop11h 00m
Wed 21/1019:45 -
Nonstop10h 25m
Deal found 29/9£404
Thu 15/1021:05 -
2 stops25h 35m
Mon 19/1016:45 -
2 stops16h 15m
Deal found 29/9£569
Sat 17/1010:50 -
2 stops18h 57m
Sat 24/1013:50 -
1 stop14h 00m
Deal found 1/10£571
Direct flights from Heathrow to San Francisco
Explore direct flight options from Heathrow to San Francisco based on user searches, and compare prices and availability for your desired travel dates. Data last updated 3 October 2026.
Fri 20/1110:05 -
Nonstop11h 15m
Sat 28/1116:40 -
Nonstop10h 35m
Deal found 29/9£390
Tue 6/1013:00 -
Nonstop10h 55m
Mon 12/1019:45 -
Nonstop10h 25m
Deal found 29/9£390
Thu 8/1016:15 -
Nonstop11h 00m
Wed 21/1016:45 -
Nonstop10h 25m
Deal found 29/9£392
Wed 21/1010:35 -
Nonstop11h 00m
Sat 7/1112:50 -
Nonstop10h 35m
Deal found 29/9£393
Wed 14/1016:15 -
Nonstop11h 00m
Wed 21/1012:55 -
Nonstop10h 30m
Deal found 28/9£393
Thu 8/1010:35 -
Nonstop11h 00m
Mon 12/1019:45 -
Nonstop10h 25m
Deal found 29/9£394
Thu 29/1013:45 -
Nonstop11h 10m
Thu 12/1112:50 -
Nonstop10h 35m
Deal found 29/9£396
Tue 6/1013:00 -
Nonstop10h 55m
Mon 19/1016:45 -
Nonstop10h 25m
Deal found 29/9£396
Tue 27/1010:05 -
Nonstop11h 15m
Tue 3/1112:50 -
Nonstop10h 35m
Deal found 29/9£398
Wed 7/1010:35 -
Nonstop11h 00m
Wed 21/1016:45 -
Nonstop10h 25m
Deal found 29/9£401
Sat 21/1110:05 -
Nonstop11h 15m
Sat 28/1112:50 -
Nonstop10h 35m
Deal found 29/9£402
Last-minute flights from Heathrow to San Francisco
Discover last-minute flight deals from Heathrow to San Francisco. Data last updated 3 October 2026 and is based on user searches.
Tue 6/1013:00 -
Nonstop10h 55m
Mon 12/1019:45 -
Nonstop10h 25m
Deal found 29/9£390
Thu 8/1016:15 -
Nonstop11h 00m
Wed 21/1016:45 -
Nonstop10h 25m
Deal found 29/9£392
Thu 8/1015:00 -
1 stop16h 20m
Wed 21/1016:30 -
1 stop12h 50m
Deal found 29/9£393
Thu 8/1010:35 -
Nonstop11h 00m
Mon 12/1019:45 -
Nonstop10h 25m
Deal found 29/9£394
Thu 8/1007:00 -
2 stops17h 15m
Wed 21/1019:35 -
1 stop28h 20m
Deal found 28/9£396
Thu 8/1007:30 -
1 stop20h 20m
Thu 15/1012:55 -
Nonstop10h 30m
Deal found 29/9£397
Fri 9/1007:25 -
1 stop15h 05m
Mon 12/1014:25 -
1 stop20h 55m
Deal found 29/9£393
Fri 16/1015:05 -
1 stop35h 26m
Tue 20/1016:30 -
1 stop12h 50m
Deal found 29/9£395
Fri 23/1006:30 -
1 stop16h 50m
Wed 4/1112:50 -
Nonstop10h 35m
Deal found 29/9£396
Tue 27/1010:05 -
Nonstop11h 15m
Tue 3/1112:50 -
Nonstop10h 35m
Deal found 29/9£398
Fri 20/1110:05 -
Nonstop11h 15m
Sat 28/1116:40 -
Nonstop10h 35m
Deal found 29/9£390
One-way flights from Heathrow to San Francisco
Search for one-way flight options from Heathrow to San Francisco. Find affordable one-way fares based on user searches. Data last updated 3 October 2026.
Wed 7/1008:40 -
1 stop15h 35m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 30/9£406
Sun 1/1107:30 -
1 stop20h 40m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 29/9£408
Fri 11/1209:55 -
3 stops36h 50m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 2/10£408
Fri 30/1009:20 -
1 stop18h 35m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 29/9£409
Fri 9/1007:25 -
1 stop15h 05m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 29/9£410
Sun 20/1209:55 -
2 stops36h 30m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 29/9£411
Fri 6/1120:50 -
2 stops25h 55m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 1/10£411
Mon 19/1020:50 -
2 stops49h 45m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 3/10£413
Thu 22/1008:40 -
1 stop24h 25m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 1/10£414
Wed 18/1118:00 -
3 stops49h 33m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 29/9£415
Find flight deals from Heathrow to San Francisco
Discover tips and strategies to find the most affordable flight options for your journey from Heathrow (LHR) to San Francisco (SFO). 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 3 October 2026.
Customise your flight search to find flights from Heathrow to San Francisco 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 7,457,451 searches. Data last updated 3 October 2026.
Use the filters below to find and compare flights from London Heathrow Airport to San Francisco that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
Cheapest return flight
LondonSan Francisco
LHR London Heathrow - SFO San Francisco
LHRSFO
London Heathrow
Wed 28/10
11:10-23:56
2 stops19h 46m
San Francisco
Wed 11/11
14:45-11:50
1 stop13h 05m
£394
LondonSan Francisco
LHR London Heathrow - SFO San Francisco
LHRSFO
London Heathrow
Thu 15/10
16:15-19:15
Nonstop11h 00m
San Francisco
Wed 28/10
17:40-11:15
Nonstop10h 35m
£403
LondonSan Francisco
LHR London Heathrow - SFO San Francisco
LHRSFO
London Heathrow
Wed 7/10
13:00-16:00
Nonstop11h 00m
San Francisco
Mon 12/10
12:55-07:25
Nonstop10h 30m
£404
LondonSan Francisco
LHR London Heathrow - SFO San Francisco
LHRSFO
London Heathrow
Thu 8/10
13:00-16:00
Nonstop11h 00m
San Francisco
Wed 21/10
19:45-14:10
Nonstop10h 25m
£404
LondonSan Francisco
LHR London Heathrow - SFO San Francisco
LHRSFO
London Heathrow
Tue 6/10
09:15-14:35
2 stops37h 20m
San Francisco
Wed 31/12
00:00-09:00
Nonstop0h 00m
£414
LondonSan Francisco
LHR London Heathrow - SFO San Francisco
LHRSFO
London Heathrow
Thu 17/12
14:45-23:59
1 stop17h 14m
San Francisco
Wed 31/12
00:00-09:00
Nonstop0h 00m
£417
LondonSan Francisco
LHR London Heathrow - SFO San Francisco
LHRSFO
London Heathrow
Tue 13/10
17:00-22:49
1 stop13h 49m
San Francisco
Sat 24/10
15:21-13:20
1 stop13h 59m
£431
LondonSan Francisco
LHR London Heathrow - SFO San Francisco
LHRSFO
London Heathrow
Tue 6/10
15:05-21:48
1 stop14h 43m
San Francisco
Wed 31/12
00:00-09:00
Nonstop0h 00m
£436
LondonSan Francisco
LHR London Heathrow - SFO San Francisco
LHRSFO
London Heathrow
Fri 27/11
06:35-19:35
1 stop21h 00m
San Francisco
Wed 31/12
00:00-09:00
Nonstop0h 00m
£438
LondonSan Francisco
LHR London Heathrow - SFO San Francisco
LHRSFO
London Heathrow
Wed 30/12
12:50-07:16
2 stops26h 26m
San Francisco
Wed 31/12
00:00-09:00
Nonstop0h 00m
£439
Flights are sorted by cheapest return flights first.
Deals found on 28/9
Showing 1-10 of 22 resultsSorted by cheapest first
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2
3
Best time to book a flight from Heathrow to San Francisco
Have a flexible travel schedule? Discover the best time to fly to San Francisco from Heathrow with our price prediction graph.
LHR-SFO
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 London Heathrow Airport to San Francisco
Prices
Airlines
Delays
More
How far ahead should I book a flight from London Heathrow Airport to San Francisco?
The price you pay for your flight from London Heathrow Airport to San Francisco may vary depending on when you book. For the best chance of a lower fare, look to book 68 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
What is the cheapest month to book a flight from London Heathrow Airport to San Francisco?
Currently, February is the cheapest month in which you can book a flight from London Heathrow Airport to San Francisco (average of £473). Flying from London Heathrow Airport to San Francisco in December is currently the most expensive (average of £656). 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 LHR to SFO?
Find hourly flight availability from Heathrow to San Francisco. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 3 October 2026.
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.
How much does it cost for a return flight from London Heathrow Airport to San Francisco?
Airfare is below average for this route at the moment.
London Heathrow Airport to San Francisco flights typically cost between £436 and £634 in November.The cheapest return price found within the last 5 days was £390 on Lufthansa (20 Nov–28 Nov).
Weekly flight availability from London Heathrow Airport to San Francisco
Explore weekly flight availability from Heathrow to San Francisco. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 3 October 2026.
The most flights from LHR to SFO are scheduled on a Wednesday (38 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (31 on average).
How often are flights from London to San Francisco delayed?
About 13% of weekly flights between London and San Francisco have experienced delays in the past year, with the average delay time being 144 minutes.
What is the most punctual flight time for London to San Francisco flights?
Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.
What day of the week experiences the fewest flight delays on this route?
Friday tends to have the lowest number of delays on this route, whereas Saturday has historically faced a higher average of delays compared to other days of the week.
Which airline has the best punctuality record on London to San Francisco flights?
Over the past year, United Airlines have had the lowest number of delays on this route, with just 11% of flights being delayed.
What’s the top stopover airport for flights from London Heathrow Airport to San Francisco?
Share of one-stop return flights from London Heathrow Airport to San Francisco chosen by Cheapflights users in the past 12 months, using the same stopover each way.
Dublin (DUB) – chosen by Cheapflights users on 33% of one-stop itineraries from London Heathrow Airport to San Francisco on Cheapflights.
What’s the cheapest stopover airport for flights from London Heathrow Airport to San Francisco?
Average return fare for one-stop flights from London Heathrow Airport to San Francisco, chosen by Cheapflights users in the past 12 months, with the same stopover each way.
Minneapolis (MSP) is the most affordable one-stop option, with an average return flight price of £344.
What’s the fastest stopover option from London Heathrow Airport to San Francisco?
Shortest average travel time for one-stop one-way flights from London Heathrow Airport to San Francisco, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by stopover airport.
Flights via Vancouver (YVR) have the shortest average one-way travel time for one-stop routes: 14h 04m.
Which airport typically offers the quickest stopover for flights from London Heathrow Airport to San Francisco?
Average stopover duration for one-stop one-way flights from London Heathrow Airport to San Francisco, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.
Flights via Frankfurt am Main (FRA) offer the fastest connection on this route, with an average stopover time of 1h 23m.
Reviews of airlines servicing San Francisco
Get insights into the airlines that provide service to San Francisco. 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 San Francisco. Reviews last updated 3 October 2026.
See what other customers who have flown with Austrian Airlines,United Airlines, andVirgin Atlantic from London Heathrow Airport to San Francisco have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Staff is courteous. Food is served with a nice touch, with the chef coming out to discuss the menu. But the quality and variety of food and snacks is below competing airlines. Onboard in Vienna was a bit chaotic. I am 6 ft 1 in tall and the flat beds are a bit tight. Other than that, the overall experience was fine.
Staff is courteous. Food is served with a nice touch, with the chef coming out to discuss the menu. But the quality and variety of food and snacks is below competing airlines. Onboard in Vienna was a bit chaotic. I am 6 ft 1 in tall and the flat beds are a bit tight. Other than that, the overall experience was fine.
Staff is courteous. Food is served with a nice touch, with the chef coming out to discuss the menu. But the quality and variety of food and snacks is below competing airlines. Onboard in Vienna was a bit chaotic. I am 6 ft 1 in tall and the flat beds are a bit tight. Other than that, the overall experience was fine.
Staff is courteous. Food is served with a nice touch, with the chef coming out to discuss the menu. But the quality and variety of food and snacks is below competing airlines. Onboard in Vienna was a bit chaotic. I am 6 ft 1 in tall and the flat beds are a bit tight. Other than that, the overall experience was fine.
Staff is courteous. Food is served with a nice touch, with the chef coming out to discuss the menu. But the quality and variety of food and snacks is below competing airlines. Onboard in Vienna was a bit chaotic. I am 6 ft 1 in tall and the flat beds are a bit tight. Other than that, the overall experience was fine.
Staff is courteous. Food is served with a nice touch, with the chef coming out to discuss the menu. But the quality and variety of food and snacks is below competing airlines. Onboard in Vienna was a bit chaotic. I am 6 ft 1 in tall and the flat beds are a bit tight. Other than that, the overall experience was fine.
Related info for your journey
Find useful and relevant information for your journey from Heathrow to San Francisco. 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 into for flights to San Francisco from London Heathrow?
Located just 11.0 mi from the city center, San Francisco is the airport most travelers 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 34 daily inbound flights from London Heathrow from 19 different airlines.
How long is the flight from London Heathrow Airport to San Francisco?
United Airlines and Alaska Airlines can get you from London Heathrow Airport to San Francisco in just under 11h. Your travel time can differ by up to 2h 49m. Airlines will cover a distance of 5350 mi. This flight may include one or multiple stops.
What are the cheapest airlines flying from London Heathrow Airport to San Francisco round-trip?
Cheapflights users have booked flights from London Heathrow Airport to San Francisco round-trip from £342. Other airlines that can offer you cheap pricing are SWISS, from £355, and Alaska Airlines, from £355. Delta is priced at 38% 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?
To fly one-way, consider booking your trip with Virgin Atlantic, which is currently one of the cheapest options available, starting at £305. British Airways flights start at £329 while deals on Iberia start at £331 one-way.
What are the most reliable airlines from London Heathrow Airport to San Francisco?
Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from London Heathrow Airport to San Francisco on time: Air Canada (75%), Austrian Airlines (75%), United Airlines (75%).
What are the cheapest flights from London Heathrow Airport to San Francisco?
The cheapest flight price from London Heathrow Airport to San Francisco is £369. On average you can expect to pay £1,421. The most popular route, (London Heathrow - San Francisco), can usually be booked for £381.
Can I find deals for business class flights from Heathrow to San Francisco?
Yes. Cheapflights offers flight deals from Heathrow to San Francisco 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 London Heathrow Airport to San Francisco?
Currently, February is the cheapest month in which you can book a flight from London Heathrow Airport to San Francisco (average of £473). Flying from London Heathrow Airport to San Francisco in December is currently the most expensive (average of £656). 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.
Book flights to San Francisco if you plan to visit one of these locations
San Bruno
Santa Cruz
Roseville
Newark
Bodega Bay
Sunnyvale
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Fly from Heathrow to San Francisco on these airlines
Choose from the following airlines for your flight from Heathrow to San Francisco. Flights are based on user searches made on Cheapflights and were last updated on 3 October 2026.
Explore flights to San Francisco departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 3 October 2026.
Top 10 airlines flying from Heathrow to San Francisco
Discover the top 10 airlines that operate flights from Heathrow to San Francisco. 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 7,457,451 searches. Data last updated 3 October 2026.
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 Heathrow to San Francisco?
900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to San Francisco from Heathrow today with Cheapflights!
Why should you use Cheapflights to find cheap flight tickets from Heathrow to San Francisco?
By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to San Francisco from Heathrow.
Can Cheapflights find flights from Heathrow to San Francisco with no change fees?
Yes! Cheapflights helps users easily find flights from Heathrow to San Francisco with no change fees.
Can Cheapflights notify me if prices for flights from Heathrow to San Francisco become cheaper?
Of course! You can now track prices for flights from Heathrow to San Francisco and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.
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