Cheap flights from London Heathrow Airport to San Francisco from £363
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 14/5. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SFO
7 Feb — 14 Feb1
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 September, booked 45 days in advance, depart on a Thursday or Wednesday and return on a Wednesday
Cheap 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 8 January 2026.
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 8 January 2026.
Mon 16/214:30LHR - SFO
1 stop29h 50mAir Canada
Sun 22/208:25SFO - LHR
2 stops28h 10mAir Canada
Deal found 7/1£407
Mon 22/616:10LHR - SFO
1 stop14h 26mFinnair
Sun 12/707:00SFO - LHR
1 stop16h 20mFinnair
Deal found 7/1£408
Thu 5/209:30LHR - SFO
2 stops19h 23mMultiple Airlines
Sun 15/208:25SFO - LHR
2 stops18h 55mMultiple Airlines
Deal found 7/1£408
Wed 8/414:20LHR - SFO
Nonstop11h 10mBritish Airways
Thu 16/416:35SFO - LHR
Nonstop10h 25mBritish Airways
Deal found 7/1£409
Thu 7/510:35LHR - SFO
Nonstop11h 05mUnited Airlines
Sun 24/519:45SFO - LHR
Nonstop10h 25mUnited Airlines
Deal found 7/1£410
Sat 18/410:35LHR - SFO
Nonstop11h 05mUnited Airlines
Fri 24/412:55SFO - LHR
Nonstop10h 30mUnited Airlines
Deal found 6/1£411
Mon 9/306:40LHR - SFO
1 stop15h 55mScandinavian Airlines
Tue 17/317:40SFO - LHR
2 stops18h 10mScandinavian Airlines
Deal found 7/1£411
Wed 4/209:20LHR - SFO
1 stop17h 35mJetBlue
Fri 6/222:37SFO - LHR
1 stop15h 23mJetBlue
Deal found 6/1£412
Fri 20/308:50LHR - SFO
1 stop14h 45mBritish Airways
Tue 7/410:06SFO - LHR
1 stop13h 59mBritish Airways
Deal found 6/1£413
Wed 8/409:30LHR - SFO
2 stops18h 02mAir Canada
Wed 29/413:20SFO - LHR
1 stop16h 00mAir Canada
Deal found 7/1£414
Wed 24/606:30LHR - SFO
1 stop14h 10mUnited Airlines
Tue 7/708:40SFO - LHR
1 stop17h 30mUnited Airlines
Deal found 7/1£414
Mon 22/616:10LHR - SFO
1 stop14h 26mFinnair
Mon 13/719:30SFO - LHR
Nonstop10h 25mFinnair
Deal found 7/1£415
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 8 January 2026.
Sun 10/510:35LHR - SFO
Nonstop11h 05mUnited Airlines
Sun 17/512:55SFO - LHR
Nonstop10h 30mUnited Airlines
Deal found 6/1£410
Sat 28/215:35LHR - SFO
2 stops31h 00mScandinavian Airlines
Sat 7/316:40SFO - LHR
2 stops18h 10mScandinavian Airlines
Deal found 7/1£420
Sat 23/516:55LHR - SFO
1 stop14h 25mBritish Airways
Fri 5/622:03SFO - LHR
1 stop13h 42mBritish Airways
Deal found 7/1£426
Tue 3/209:20LHR - SFO
1 stop21h 39mJetBlue
Fri 6/208:26SFO - LHR
1 stop14h 29mJetBlue
Deal found 7/1£434
Tue 23/606:15LHR - SFO
1 stop14h 35mMultiple Airlines
Sun 5/723:15SFO - LHR
Nonstop10h 15mMultiple Airlines
Deal found 7/1£439
Sat 18/410:35LHR - SFO
Nonstop11h 05mUnited Airlines
Sat 25/416:35SFO - LHR
Nonstop10h 35mUnited Airlines
Deal found 7/1£412
Mon 9/319:50LHR - SFO
2 stops26h 45mScandinavian Airlines
Mon 23/317:40SFO - LHR
2 stops15h 45mScandinavian Airlines
Deal found 6/1£420
Sat 31/111:45LHR - SFO
Nonstop11h 15mBritish Airways
Fri 6/317:30SFO - LHR
Nonstop10h 30mBritish Airways
Deal found 5/1£429
Tue 7/413:00LHR - SFO
Nonstop11h 10mUnited Airlines
Tue 14/412:55SFO - LHR
Nonstop10h 30mUnited Airlines
Deal found 6/1£419
Thu 2/716:10LHR - SFO
1 stop14h 26mBritish Airways
Thu 30/716:35SFO - LHR
Nonstop10h 25mBritish Airways
Deal found 6/1£431
Fri 3/716:10LHR - SFO
1 stop14h 26mBritish Airways
Wed 29/719:20SFO - LHR
Nonstop10h 25mBritish Airways
Deal found 6/1£431
Tue 12/510:45LHR - SFO
Nonstop11h 05mBritish Airways
Mon 1/619:30SFO - LHR
Nonstop10h 25mBritish Airways
Deal found 6/1£432
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 8 January 2026.
Wed 8/414:20LHR - SFO
Nonstop11h 10mBritish Airways
Thu 16/416:35SFO - LHR
Nonstop10h 25mBritish Airways
Deal found 7/1£409
Thu 7/510:35LHR - SFO
Nonstop11h 05mUnited Airlines
Sun 24/519:45SFO - LHR
Nonstop10h 25mUnited Airlines
Deal found 7/1£410
Sat 18/410:35LHR - SFO
Nonstop11h 05mUnited Airlines
Fri 24/412:55SFO - LHR
Nonstop10h 30mUnited Airlines
Deal found 6/1£411
Thu 7/510:45LHR - SFO
Nonstop11h 05mBritish Airways
Thu 14/516:35SFO - LHR
Nonstop10h 25mBritish Airways
Deal found 6/1£411
Tue 31/314:30LHR - SFO
Nonstop11h 10mAmerican Airlines
Tue 7/419:30SFO - LHR
Nonstop10h 25mAmerican Airlines
Deal found 7/1£412
Wed 1/410:45LHR - SFO
Nonstop11h 05mBritish Airways
Sat 25/416:35SFO - LHR
Nonstop10h 25mBritish Airways
Deal found 7/1£416
Thu 5/210:05LHR - SFO
Nonstop11h 15mLufthansa
Thu 19/217:25SFO - LHR
Nonstop10h 35mLufthansa
Deal found 6/1£418
Tue 7/413:00LHR - SFO
Nonstop11h 10mUnited Airlines
Tue 14/412:55SFO - LHR
Nonstop10h 30mUnited Airlines
Deal found 6/1£419
Tue 7/410:45LHR - SFO
Nonstop11h 05mBritish Airways
Sat 18/416:35SFO - LHR
Nonstop10h 25mBritish Airways
Deal found 7/1£420
Thu 9/410:45LHR - SFO
Nonstop11h 05mBritish Airways
Sat 18/416:35SFO - LHR
Nonstop10h 25mBritish Airways
Deal found 7/1£420
Wed 24/616:15LHR - SFO
Nonstop11h 00mUnited Airlines
Tue 7/713:00SFO - LHR
Nonstop10h 25mUnited Airlines
Deal found 7/1£421
Fri 10/410:35LHR - SFO
Nonstop11h 05mUnited Airlines
Fri 17/419:30SFO - LHR
Nonstop10h 40mUnited Airlines
Deal found 6/1£422
Last-minute flights from Heathrow to San Francisco
Discover last-minute flight deals from Heathrow to San Francisco. Data last updated 8 January 2026 and is based on user searches.
Tue 13/119:30LHR - SFO
2 stops29h 00mSWISS
Mon 26/119:25SFO - LHR
2 stops18h 00mSWISS
Deal found 6/1£414
Wed 14/114:25LHR - SFO
2 stops34h 05mSWISS
Tue 17/219:25SFO - LHR
2 stops18h 00mSWISS
Deal found 7/1£410
Thu 15/114:25LHR - SFO
2 stops34h 05mSWISS
Sun 1/211:45SFO - LHR
2 stops20h 35mSWISS
Deal found 6/1£417
Thu 15/114:25LHR - SFO
2 stops34h 05mSWISS
Mon 19/119:25SFO - LHR
2 stops18h 00mSWISS
Deal found 6/1£418
Wed 4/209:20LHR - SFO
1 stop17h 35mJetBlue
Fri 6/222:37SFO - LHR
1 stop15h 23mJetBlue
Deal found 6/1£412
Wed 4/221:05LHR - SFO
2 stops25h 30mScandinavian Airlines
Mon 9/216:40SFO - LHR
2 stops15h 45mScandinavian Airlines
Deal found 6/1£416
Thu 5/209:30LHR - SFO
2 stops19h 23mMultiple Airlines
Sun 15/208:25SFO - LHR
2 stops18h 55mMultiple Airlines
Deal found 7/1£408
Tue 10/211:10LHR - SFO
2 stops19h 49mMultiple Airlines
Sun 22/207:30SFO - LHR
2 stops17h 50mMultiple Airlines
Deal found 6/1£419
Mon 16/214:30LHR - SFO
1 stop29h 50mAir Canada
Sun 22/208:25SFO - LHR
2 stops28h 10mAir Canada
Deal found 7/1£407
Wed 18/219:30LHR - SFO
1 stop27h 05mScandinavian Airlines
Fri 11/1216:40SFO - LHR
1 stop32h 40mScandinavian Airlines
Deal found 6/1£414
Wed 18/214:30LHR - SFO
1 stop27h 01mAir Canada
Wed 15/408:23SFO - LHR
2 stops17h 37mAir Canada
Deal found 7/1£417
Thu 26/211:35LHR - SFO
2 stops16h 35mUnited Airlines
Thu 12/315:40SFO - LHR
1 stop14h 10mUnited Airlines
Deal found 7/1£409
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 8 January 2026.
Thu 14/519:10LHR - SFO
2 stops36h 49mBritish Airways
Deal found 7/1£363
Thu 15/107:25LHR - SFO
1 stop35h 15mJetBlue
Deal found 7/1£363
Mon 12/109:20LHR - SFO
1 stop21h 39mJetBlue
Deal found 7/1£364
Wed 21/114:50LHR - SFO
3 stops29h 30mMultiple Airlines
Deal found 7/1£365
Thu 7/508:40LHR - SFO
2 stops17h 57mMultiple Airlines
Deal found 7/1£365
Sat 21/219:25LHR - SFO
2 stops49h 15mAustrian Airlines
Deal found 7/1£366
Mon 23/319:15LHR - SFO
2 stops25h 25mLufthansa
Deal found 7/1£367
Tue 13/109:50LHR - SFO
1 stop13h 45mAer Lingus
Deal found 6/1£368
Tue 7/406:00LHR - SFO
2 stops23h 21mAir Canada
Deal found 6/1£369
Wed 25/307:00LHR - SFO
2 stops17h 30mSWISS
Deal found 7/1£370
Cheapflights Fare Finder
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 858,174 searches. Data last updated 8 January 2026.
Use the filters below to find and compare flights from London Heathrow Airport to San Francisco that are best for you.
Fly from
Heathrow
Fly to
San Francisco
Route
Depart
Return
Price
LondonSan Francisco
LHR - SFO
LHRSFO
London Heathrow
Sun 10/5
10:35-13:40
Nonstop11h 05m
San Francisco
Sun 17/5
12:55-07:25
Nonstop10h 30m
£410
LondonSan Francisco
LHR - SFO
LHRSFO
London Heathrow
Sat 18/4
10:35-13:40
Nonstop11h 05m
San Francisco
Sat 25/4
16:35-11:10
Nonstop10h 35m
£412
LondonSan Francisco
LHR - SFO
LHRSFO
London Heathrow
Tue 7/4
13:00-16:10
Nonstop11h 10m
San Francisco
Tue 14/4
12:55-07:25
Nonstop10h 30m
£419
LondonSan Francisco
LHR - SFO
LHRSFO
London Heathrow
Sat 28/2
15:35-14:35
2 stops31h 00m
San Francisco
Sat 7/3
16:40-18:50
2 stops18h 10m
£420
LondonSan Francisco
LHR - SFO
LHRSFO
London Heathrow
Mon 9/3
19:50-15:35
2 stops26h 45m
San Francisco
Mon 23/3
17:40-16:25
2 stops15h 45m
£420
LondonSan Francisco
LHR - SFO
LHRSFO
London Heathrow
Sat 23/5
16:55-23:20
1 stop14h 25m
San Francisco
Fri 5/6
22:03-19:45
1 stop13h 42m
£426
LondonSan Francisco
LHR - SFO
LHRSFO
London Heathrow
Sat 31/1
11:45-15:00
Nonstop11h 15m
San Francisco
Fri 6/3
17:30-12:00
Nonstop10h 30m
£429
LondonSan Francisco
LHR - SFO
LHRSFO
London Heathrow
Thu 2/7
16:10-22:36
1 stop14h 26m
San Francisco
Thu 30/7
16:35-11:00
Nonstop10h 25m
£431
LondonSan Francisco
LHR - SFO
LHRSFO
London Heathrow
Fri 3/7
16:10-22:36
1 stop14h 26m
San Francisco
Wed 29/7
19:20-13:45
Nonstop10h 25m
£431
LondonSan Francisco
LHR - SFO
LHRSFO
London Heathrow
Tue 12/5
10:45-13:50
Nonstop11h 05m
San Francisco
Mon 1/6
19:30-13:55
Nonstop10h 25m
£432
Flights are sorted by cheapest return flights first.
Deals found on 6/1
Showing 1-10 of 23 results
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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.
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?
Use this chart to determine the optimal time to book a return flight from Heathrow to San Francisco. Price data was last updated on 2 January 2026.
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 45 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 £351). Flying from London Heathrow Airport to San Francisco in July is currently the most expensive (average of £443). 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 8 January 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.
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 8 January 2026.
The most flights from LHR to SFO are scheduled on a Monday (31 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (26 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 141 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?
Tuesday tends to have the lowest number of delays on this route, whereas Sunday 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, Virgin Atlantic 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.
Copenhagen (CPH) – chosen by Cheapflights users on 30% 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.
Toronto (YYZ) is the most affordable one-stop option, with an average return flight price of £402.
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 Amsterdam (AMS) have the shortest average one-way travel time for one-stop routes: 13h 16m.
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 Amsterdam (AMS) offer the fastest connection on this route, with an average stopover time of 1h 06m.
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 8 January 2026.
See what other customers who have flown with Austrian Airlines, Virgin Atlantic, andUnited Airlines 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.
Awful . Flight was overbooked. The boarding cards could not be printed, you had to wait more than one hour in a line that only two kiosks were working, staff was leaving and inside the plane they had the same seats in 3 cases at least winter twice!! I’ve never experienced such a disorganization! Awful
Awful . Flight was overbooked. The boarding cards could not be printed, you had to wait more than one hour in a line that only two kiosks were working, staff was leaving and inside the plane they had the same seats in 3 cases at least winter twice!! I’ve never experienced such a disorganization! Awful
Awful . Flight was overbooked. The boarding cards could not be printed, you had to wait more than one hour in a line that only two kiosks were working, staff was leaving and inside the plane they had the same seats in 3 cases at least winter twice!! I’ve never experienced such a disorganization! Awful
Awful . Flight was overbooked. The boarding cards could not be printed, you had to wait more than one hour in a line that only two kiosks were working, staff was leaving and inside the plane they had the same seats in 3 cases at least winter twice!! I’ve never experienced such a disorganization! Awful
Awful . Flight was overbooked. The boarding cards could not be printed, you had to wait more than one hour in a line that only two kiosks were working, staff was leaving and inside the plane they had the same seats in 3 cases at least winter twice!! I’ve never experienced such a disorganization! Awful
Awful . Flight was overbooked. The boarding cards could not be printed, you had to wait more than one hour in a line that only two kiosks were working, staff was leaving and inside the plane they had the same seats in 3 cases at least winter twice!! I’ve never experienced such a disorganization! Awful
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 11.8 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 30 daily inbound flights from London Heathrow from 18 different airlines.
How long is the flight from London Heathrow Airport to San Francisco?
United Airlines and Scandinavian Airlines can get you from London Heathrow Airport to San Francisco in just under 11h 05m. Your travel time can differ by up to 19h 55m. 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 £236. Other airlines that can offer you cheap pricing are Air Canada, from £334, and United Airlines, from £349. Delta is priced at 53% 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 Scandinavian Airlines, which is currently one of the cheapest options available, starting at £248. TAP AIR PORTUGAL flights start at £269 while deals on WestJet start at £299 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 (88%), Austrian Airlines (88%), United Airlines (88%).
What are the cheapest flights from London Heathrow Airport to San Francisco?
The cheapest flight price from London Heathrow Airport to San Francisco is £379. On average you can expect to pay £2,001. The most popular route, (London Heathrow - San Francisco), can usually be booked for £306.
Where are the most common stopover locations when flying from London Heathrow Airport to San Francisco?
Flights departing from London Heathrow Airport and landing in San Francisco stopover in Copenhagen most frequently.
What are some popular things to do or see while on a stopover in Copenhagen?
The majority of Copenhagen visitors spend their time at Tivoli, Rådhuspladsen, and Opera House. Tivoli, Rådhuspladsen, and Opera House can be visited by traveling about 5.3 mi, 5.2 mi, and 4.9 mi respectively from Kastrup Copenhagen. Those on a stopover in Copenhagen in need of a car hire can book one at Kastrup Copenhagen for about £28.
Where are the least popular stopover locations for London Heathrow Airport to San Francisco flights?
London Heathrow Airport to San Francisco flights have a stopover in Copenhagen least often.
Can I find deals for flights from Heathrow to San Francisco that include hotel bookings?
Yes. In addition to deals on Heathrow to San Francisco flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Heathrow to San Francisco?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Heathrow to San Francisco.
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 £351). Flying from London Heathrow Airport to San Francisco in July is currently the most expensive (average of £443). 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
Santa Cruz
Newark
San Bruno
Bodega Bay
South San Francisco
Sunnyvale
Pacific Grove
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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 8 January 2026.
Explore flights to San Francisco departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 8 January 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 858,174 searches. Data last updated 8 January 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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