$488+ Cheap flights from Heathrow (LHR) to San Francisco (SFO)
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 8/26. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SFO
Sep 8 — Sep 151
Round-trip
1 adult, Economy
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Find cheap flights from Heathrow to San Francisco with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheapflights Tip: The best prices from London Heathrow to San Francisco are usually found in February or September, booked 23 days in advance, depart on a Friday or Wednesday and return on a Tuesday
Cheap flight deals from Heathrow to San Francisco
Cheapest
Best
Last-minute
One-way
Cheapest flights from Heathrow to San FranciscoExplore 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 August 9, 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 August 9, 2026.
This United Airlines deal was found by Cheapflights users on 8/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/1812:50 pm -
2 stops26h 35m
Sun 1/37:01 pm -
1 stop30h 39m
Deal found 8/9![United Airlines logo]()
$596
This Cheapflightsfares deal was found by Cheapflights users on 8/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/810:35 am -
Nonstop11h 00m
Tue 9/2912:55 pm -
Nonstop10h 30m
Deal found 8/9![Lufthansa logo]()
$598
This Air Canada deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/121:00 pm -
1 stop16h 33m
Thu 12/315:00 am -
2 stops19h 30m
Deal found 8/5![Air Canada logo]()
$599
This United Airlines deal was found by Cheapflights users on 8/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/410:35 am -
Nonstop11h 00m
Thu 9/1712:50 pm -
Nonstop10h 35m
Deal found 8/7![United Airlines logo]()
$600
This United Airlines deal was found by Cheapflights users on 8/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/510:35 am -
Nonstop11h 00m
Mon 9/147:45 pm -
Nonstop10h 25m
Deal found 8/8![United Airlines logo]()
$601
This Lufthansa deal was found by Cheapflights users on 8/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/64:15 pm -
Nonstop10h 55m
Sat 9/1912:50 pm -
Nonstop10h 35m
Deal found 8/9![Multiple Airlines logo]()
$602
This Gotogate deal was found by Cheapflights users on 8/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/176:50 am -
2 stops22h 09m
Wed 12/95:00 am -
2 stops18h 10m
Deal found 8/7![Air Canada logo]()
$604
This United Airlines deal was found by Cheapflights users on 8/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/1510:35 am -
Nonstop11h 00m
Sat 9/264:45 pm -
Nonstop10h 25m
Deal found 8/6![United Airlines logo]()
$605
This Lufthansa deal was found by Cheapflights users on 8/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/31:00 pm -
Nonstop11h 00m
Wed 9/1612:50 pm -
Nonstop10h 35m
Deal found 8/6![Austrian Airlines logo]()
$606
This United Airlines deal was found by Cheapflights users on 8/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/62:50 pm -
1 stop14h 24m
Sat 9/1912:35 pm -
1 stop13h 05m
Deal found 8/9![United Airlines logo]()
$607
This British Airways deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1710:45 am -
Nonstop11h 05m
Wed 9/304:35 pm -
Nonstop10h 25m
Deal found 8/5![British Airways logo]()
$608
Best flights from Heathrow to San FranciscoDiscover carefully curated flight deals from Heathrow to San Francisco that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 9, 2026.
Discover carefully curated flight deals from Heathrow to San Francisco that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 9, 2026.
This Delta deal was found by Cheapflights users on 8/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/136:30 am -
1 stop13h 15m
Mon 1/410:31 am -
1 stop16h 09m
Deal found 8/9![Delta logo]()
$599
This United Airlines deal was found by Cheapflights users on 8/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/51:00 pm -
Nonstop11h 00m
Fri 9/1112:50 pm -
Nonstop10h 35m
Deal found 8/8![United Airlines logo]()
$600
This Lufthansa deal was found by Cheapflights users on 8/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/31:00 pm -
Nonstop11h 00m
Wed 9/1612:50 pm -
Nonstop10h 35m
Deal found 8/6![Austrian Airlines logo]()
$606
This SWISS deal was found by Cheapflights users on 8/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/47:00 am -
2 stops17h 15m
Mon 9/77:35 pm -
2 stops17h 55m
Deal found 8/7![SWISS logo]()
$710
This Lufthansa deal was found by Cheapflights users on 8/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/2510:35 am -
Nonstop11h 00m
Tue 9/87:45 pm -
Nonstop10h 25m
Deal found 8/6![Multiple Airlines logo]()
$727
This United Airlines deal was found by Cheapflights users on 8/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/610:35 am -
Nonstop11h 00m
Sat 9/194:45 pm -
Nonstop10h 25m
Deal found 8/9![United Airlines logo]()
$600
This Delta deal was found by Cheapflights users on 8/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/146:30 am -
1 stop13h 15m
Sun 1/31:50 pm -
1 stop12h 55m
Deal found 8/9![Delta logo]()
$654
This Delta deal was found by Cheapflights users on 8/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/1411:50 am -
Nonstop11h 00m
Mon 1/44:40 pm -
Nonstop10h 15m
Deal found 8/9![Delta logo]()
$655
This United Airlines deal was found by Cheapflights users on 8/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/228:45 am -
1 stop15h 50m
Fri 9/2512:55 pm -
Nonstop10h 30m
Deal found 8/7![United Airlines logo]()
$666
This Delta deal was found by Cheapflights users on 8/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/1311:50 am -
Nonstop11h 00m
Sun 1/31:50 pm -
1 stop12h 55m
Deal found 8/9![Delta logo]()
$694
This United Airlines deal was found by Cheapflights users on 8/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/2210:35 am -
Nonstop11h 00m
Fri 10/24:45 pm -
Nonstop10h 25m
Deal found 8/8![United Airlines logo]()
$720
Last-minute flights from Heathrow to San FranciscoDiscover last-minute flight deals from Heathrow to San Francisco. Data last updated August 9, 2026 and is based on user searches.
Discover last-minute flight deals from Heathrow to San Francisco. Data last updated August 9, 2026 and is based on user searches.
This Lufthansa deal was found by Cheapflights users on 8/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/31:00 pm -
Nonstop11h 00m
Wed 9/1612:50 pm -
Nonstop10h 35m
Deal found 8/6![Austrian Airlines logo]()
$606
This United Airlines deal was found by Cheapflights users on 8/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/410:35 am -
Nonstop11h 00m
Thu 9/1712:50 pm -
Nonstop10h 35m
Deal found 8/7![United Airlines logo]()
$600
This United Airlines deal was found by Cheapflights users on 8/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/54:15 pm -
Nonstop10h 55m
Fri 9/184:45 pm -
Nonstop10h 25m
Deal found 8/8![United Airlines logo]()
$601
This Lufthansa deal was found by Cheapflights users on 8/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/61:00 pm -
Nonstop11h 00m
Sat 9/1912:50 pm -
Nonstop10h 35m
Deal found 8/9![Multiple Airlines logo]()
$602
This United Airlines deal was found by Cheapflights users on 8/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/62:50 pm -
1 stop14h 24m
Sat 9/1912:35 pm -
1 stop13h 05m
Deal found 8/9![United Airlines logo]()
$607
This Cheapflightsfares deal was found by Cheapflights users on 8/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/810:35 am -
Nonstop11h 00m
Tue 9/2912:55 pm -
Nonstop10h 30m
Deal found 8/9![Lufthansa logo]()
$598
This United Airlines deal was found by Cheapflights users on 8/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/1510:35 am -
Nonstop11h 00m
Mon 9/214:45 pm -
Nonstop10h 25m
Deal found 8/6![United Airlines logo]()
$605
This Gotogate deal was found by Cheapflights users on 8/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/176:50 am -
2 stops22h 09m
Wed 12/95:00 am -
2 stops18h 10m
Deal found 8/7![Air Canada logo]()
$604
This British Airways deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1710:45 am -
Nonstop11h 05m
Wed 9/304:35 pm -
Nonstop10h 25m
Deal found 8/5![British Airways logo]()
$608
This Globehunters deal was found by Cheapflights users on 8/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Globehunters is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/204:40 pm -
1 stop16h 19m
Fri 10/97:35 pm -
1 stop33h 45m
Deal found 8/7![Multiple Airlines logo]()
$599
This United Airlines deal was found by Cheapflights users on 8/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/209:30 am -
1 stop19h 17m
Sun 9/2712:55 pm -
Nonstop10h 30m
Deal found 8/6![United Airlines logo]()
$609
One-way flights from Heathrow to San FranciscoSearch for one-way flight options from Heathrow to San Francisco. Find affordable one-way fares based on user searches. Data last updated August 9, 2026.
Search for one-way flight options from Heathrow to San Francisco. Find affordable one-way fares based on user searches. Data last updated August 9, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/269:55 am -
2 stops36h 35m
Deal found 8/6![Multiple Airlines logo]()
$488
This Kiwi.com deal was found by Cheapflights users on 8/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/19:55 am -
2 stops36h 40m
Deal found 8/7![Multiple Airlines logo]()
$490
This Air Canada deal was found by Cheapflights users on 8/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/152:05 pm -
1 stop15h 43m
Deal found 8/6![Air Canada logo]()
$491
This Cheapflightsfares deal was found by Cheapflights users on 8/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/156:15 am -
2 stops25h 44m
Deal found 8/6![Iberia logo]()
$492
This British Airways deal was found by Cheapflights users on 8/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/101:45 pm -
1 stop17h 14m
Deal found 8/7![British Airways logo]()
$493
This British Airways deal was found by Cheapflights users on 8/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/3111:20 am -
1 stop16h 25m
Deal found 8/7![British Airways logo]()
$494
This United Airlines deal was found by Cheapflights users on 8/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/3011:35 am -
1 stop27h 30m
Deal found 8/6![United Airlines logo]()
$495
This Cheapflightsfares deal was found by Cheapflights users on 8/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/227:05 am -
2 stops21h 41m
Deal found 8/7![British Airways logo]()
$496
This British Airways deal was found by Cheapflights users on 8/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/43:20 pm -
Nonstop11h 25m
Deal found 8/7![British Airways logo]()
$497
This Alaska Airlines deal was found by Cheapflights users on 8/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/172:45 pm -
1 stop17h 14m
Deal found 8/8![Alaska Airlines logo]()
$498
This American Airlines deal was found by Cheapflights users on 8/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/298:15 am -
2 stops21h 19m
Deal found 8/7![American Airlines logo]()
$499
This Air Canada deal was found by Cheapflights users on 8/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/299:30 am -
2 stops19h 29m
Deal found 8/9![Air Canada logo]()
$500
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 August 9, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $596 (United Airlines) |
One-way from | $488 (Kiwi.com) |
Popular in | December |
Cheapest in | February |
Average price | $809 |
Good round-trip deal | $700 or less |
Good one-way deal | $547 or less |
Cheapflights Fare Finder
Customize 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 2,558,603 searches. Data last updated August 9, 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
Cheapest round-trip
LondonSan Francisco
LHR London Heathrow - SFO San Francisco
LHRSFO
London Heathrow
Sun 12/13
6:30 am-11:45 am
1 stop13h 15m
San Francisco
Mon 1/4
10:31 am-10:40 am
1 stop16h 09m
$599
LondonSan Francisco
LHR London Heathrow - SFO San Francisco
LHRSFO
London Heathrow
Sat 9/5
1:00 pm-4:00 pm
Nonstop11h 00m
San Francisco
Fri 9/11
12:50 pm-7:25 am
Nonstop10h 35m
$600
LondonSan Francisco
LHR London Heathrow - SFO San Francisco
LHRSFO
London Heathrow
Sun 9/6
10:35 am-1:35 pm
Nonstop11h 00m
San Francisco
Sat 9/19
4:45 pm-11:10 am
Nonstop10h 25m
$600
LondonSan Francisco
LHR London Heathrow - SFO San Francisco
LHRSFO
London Heathrow
Thu 9/3
1:00 pm-4:00 pm
Nonstop11h 00m
San Francisco
Wed 9/16
12:50 pm-7:25 am
Nonstop10h 35m
$606
LondonSan Francisco
LHR London Heathrow - SFO San Francisco
LHRSFO
London Heathrow
Mon 12/14
6:30 am-11:45 am
1 stop13h 15m
San Francisco
Sun 1/3
1:50 pm-10:45 am
1 stop12h 55m
$654
Quickest round-trip
LondonSan Francisco
LHR London Heathrow - SFO San Francisco
LHRSFO
London Heathrow
Mon 12/14
11:50 am-2:50 pm
Nonstop11h 00m
San Francisco
Mon 1/4
4:40 pm-10:55 am
Nonstop10h 15m
$655
LondonSan Francisco
LHR London Heathrow - SFO San Francisco
LHRSFO
London Heathrow
Tue 9/22
8:45 am-4:35 pm
1 stop15h 50m
San Francisco
Fri 9/25
12:55 pm-7:25 am
Nonstop10h 30m
$666
LondonSan Francisco
LHR London Heathrow - SFO San Francisco
LHRSFO
London Heathrow
Sun 12/13
11:50 am-2:50 pm
Nonstop11h 00m
San Francisco
Sun 1/3
1:50 pm-10:45 am
1 stop12h 55m
$694
LondonSan Francisco
LHR London Heathrow - SFO San Francisco
LHRSFO
London Heathrow
Fri 9/4
7:00 am-4:15 pm
2 stops17h 15m
San Francisco
Mon 9/7
7:35 pm-9:30 pm
2 stops17h 55m
$710
LondonSan Francisco
LHR London Heathrow - SFO San Francisco
LHRSFO
London Heathrow
Sat 8/22
10:35 am-1:35 pm
Nonstop11h 00m
San Francisco
Fri 10/2
4:45 pm-11:10 am
Nonstop10h 25m
$720
Showing 1-10 of 22 resultsSorted by cheapest first
Compare providers for flights from Heathrow to San Francisco
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Heathrow to San Francisco in August.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*2 stars | |
| Price Accuracy3 stars | Trust Score*2 stars |
- Most accurate provider: When it comes to deals on London Heathrow Airport-San Francisco flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on London Heathrow Airport-San Francisco flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from London Heathrow Airport-San Francisco flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on London Heathrow Airport-San Francisco flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for London Heathrow Airport-San Francisco flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
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 round-trip 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
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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 22 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 $598). Flying from London Heathrow Airport to San Francisco in December is currently the most expensive (average of $868). 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 August 9, 2026.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from London Heathrow Airport to San Francisco as you normally would.
How often are flights from London to San Francisco delayed?
About 12% of weekly flights between London and San Francisco have experienced delays in the past year, with the average delay time being 145 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 Wednesday 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 last year, United Airlines have had the lowest number of delays on this route, with just 11% of flights being delayed.
What’s the top layover airport for flights from London Heathrow Airport to San Francisco?
Share of 1-stop round-trip flights from London Heathrow Airport to San Francisco chosen by Cheapflights users in the past 12 months, using the same layover each way.
Dublin (DUB) – chosen by Cheapflights users on 40% of 1-stop itineraries from London Heathrow Airport to San Francisco on Cheapflights.
What’s the cheapest layover airport for flights from London Heathrow Airport to San Francisco?
Average round-trip fare for 1-stop flights from London Heathrow Airport to San Francisco, chosen by Cheapflights users in the past 12 months, with the same layover each way.
Copenhagen (CPH) is the most affordable 1-stop option, with an average round-trip price of $520.
What’s the fastest layover option from London Heathrow Airport to San Francisco?
Shortest average travel time for 1-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 layover airport.
Flights via Dublin (DUB) have the shortest average one-way travel time for 1-stop routes: 14h 03m.
Which airport typically offers the quickest layover for flights from London Heathrow Airport to San Francisco?
Average layover duration for 1-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 Dublin (DUB) offer the fastest connection on this route, with an average layover time of 1h 41m.
The best insider tips for London Heathrow Airport to San Francisco flights
AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your London Heathrow Airport to San Francisco trip
Our travel experts
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 August 9, 2026.
Get a feel of what it's like to fly with Virgin Atlantic,United Airlines, andAmerican Airlines from London Heathrow Airport to San Francisco by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
7.7
Entertainment
7.5
Comfort
7.3
Overall
7.5
Food
6.9
Crew
8.1
Reviews
1 / 20
10.0
ExcellentEdwin,May 2026
LHR - LAX
Boarding
7.7
Entertainment
7.5
Comfort
7.3
Overall
7.5
Food
6.9
Crew
8.1
Reviews
1 / 20
10.0
ExcellentEdwin,May 2026
LHR - LAX
Boarding
7.7
Entertainment
7.5
Comfort
7.3
Overall
7.5
Food
6.9
Crew
8.1
Reviews
1 / 20
10.0
ExcellentEdwin,May 2026
LHR - LAX
Boarding
7.7
Entertainment
7.5
Comfort
7.3
Overall
7.5
Food
6.9
Crew
8.1
Reviews
1 / 20
10.0
ExcellentEdwin,May 2026
LHR - LAX
Boarding
7.7
Entertainment
7.5
Comfort
7.3
Overall
7.5
Food
6.9
Crew
8.1
Reviews
1 / 20
10.0
ExcellentEdwin,May 2026
LHR - LAX
Boarding
7.7
Entertainment
7.5
Comfort
7.3
Overall
7.5
Food
6.9
Crew
8.1
Reviews
1 / 20
10.0
ExcellentEdwin,May 2026
LHR - LAX
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.
Traveling to a place near San Francisco?
Book flights to San Francisco if you plan to visit one of these locationsSouth San Francisco
Santa Clara
Santa Cruz
Walnut Creek
San Bruno
Fairfield
Emeryville
Roseville
Burlingame
Rancho Cordova
Vallejo
Cupertino
Newark
Hayward
San Ramon
Redwood City
San Carlos
Manteca
Turlock
San Lorenzo
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Heathrow and San Francisco flights
Browse other Heathrow and San Francisco flight options. Last updated on August 9, 2026.
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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 2,558,603 searches. Data last updated August 9, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$449 | Average$500 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$506 | Average$805 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$520 | Average$842 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$531 | Average$698 | FlexibilityNo cancel fee | On-time78% | |
| Cheapest$535 | Average$721 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$538 | Average$806 | FlexibilityNo cancel fee | On-time72% | |
| Cheapest$557 | Average$822 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$559 | Average$747 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$561 | Average$859 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$589 | Average$843 | FlexibilityNo cancel fee | On-time71% |