$493+ Cheap flights from Heathrow (LHR) to San Francisco (SFO)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/4. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SFO
Oct 10 — Oct 171
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 Wednesday or Friday 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 September 10, 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 September 10, 2026.
This United Airlines deal was found by Cheapflights users on 9/9. 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 9/182:50 pm -
2 stops16h 05m
Fri 10/212:28 pm -
1 stop13h 42m
Deal found 9/9![United Airlines logo]()
$549
This Air Canada deal was found by Cheapflights users on 9/9. 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.
Sat 9/262:05 pm -
1 stop15h 43m
Thu 10/158:10 am -
1 stop17h 50m
Deal found 9/9![Air Canada logo]()
$550
This Air Canada deal was found by Cheapflights users on 9/9. 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.
Wed 10/712:05 pm -
2 stops19h 15m
Sun 10/114:30 pm -
1 stop12h 50m
Deal found 9/9![Air Canada logo]()
$552
This Air Canada deal was found by Cheapflights users on 9/8. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/239:30 am -
2 stops17h 24m
Fri 10/3010:15 am -
1 stop18h 35m
Deal found 9/8![Multiple Airlines logo]()
$553
This United Airlines deal was found by Cheapflights users on 9/9. 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.
Wed 9/232:50 pm -
2 stops16h 05m
Fri 10/99:05 pm -
1 stop14h 35m
Deal found 9/9![United Airlines logo]()
$554
This Air Canada deal was found by Cheapflights users on 9/9. 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.
Sat 9/192:05 pm -
1 stop15h 43m
Fri 10/28:10 am -
1 stop19h 40m
Deal found 9/9![Air Canada logo]()
$556
This British Airways deal was found by Cheapflights users on 9/8. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/237:10 pm -
1 stop29h 10m
Fri 10/99:27 am -
1 stop17h 38m
Deal found 9/8![British Airways logo]()
$557
This Air Canada deal was found by Cheapflights users on 9/8. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/199:30 am -
1 stop19h 17m
Wed 9/238:30 am -
2 stops17h 30m
Deal found 9/8![Air Canada logo]()
$558
This Air Canada deal was found by Cheapflights users on 9/9. 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 9/229:30 am -
2 stops19h 29m
Sun 9/278:10 am -
1 stop14h 20m
Deal found 9/9![Air Canada logo]()
$559
This Air Canada deal was found by Cheapflights users on 9/9. 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.
Wed 11/411:10 am -
2 stops19h 47m
Mon 11/306:30 am -
2 stops18h 00m
Deal found 9/9![Air Canada logo]()
$560
This Air Canada deal was found by Cheapflights users on 9/9. 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.
Thu 9/1712:05 pm -
2 stops17h 42m
Wed 9/3011:10 am -
1 stop14h 50m
Deal found 9/9![Multiple Airlines logo]()
$561
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 September 10, 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 September 10, 2026.
This Alaska Airlines deal was found by Cheapflights users on 9/6. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/35:00 pm -
1 stop13h 49m
Sat 7/174:44 pm -
1 stop14h 21m
Deal found 9/6![Alaska Airlines logo]()
$587
This Lufthansa deal was found by Cheapflights users on 9/8. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/76:30 am -
1 stop14h 10m
Fri 10/1612:55 pm -
Nonstop10h 30m
Deal found 9/8![Lufthansa logo]()
$623
This KLM deal was found by Cheapflights users on 9/7. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/312:45 pm -
Nonstop11h 10m
Sat 10/105:55 pm -
Nonstop10h 20m
Deal found 9/7![KLM logo]()
$829
This United Airlines deal was found by Cheapflights users on 9/8. 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 12/194:20 pm -
2 stops24h 41m
Sun 1/37:52 pm -
1 stop29h 48m
Deal found 9/8![United Airlines logo]()
$851
This Delta deal was found by Cheapflights users on 9/9. 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 12/219:50 am -
1 stop22h 16m
Fri 1/14:40 pm -
Nonstop10h 15m
Deal found 9/9![Delta logo]()
$869
This SWISS deal was found by Cheapflights users on 9/9. 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/227:00 am -
2 stops17h 15m
Tue 9/297:35 pm -
2 stops17h 55m
Deal found 9/9![SWISS logo]()
$971
This Alaska Airlines deal was found by Cheapflights users on 9/7. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/182:45 pm -
1 stop17h 14m
Mon 1/42:37 pm -
1 stop13h 43m
Deal found 9/7![Alaska Airlines logo]()
$664
This Lufthansa deal was found by Cheapflights users on 9/9. 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.
Sat 10/241:00 pm -
Nonstop11h 00m
Sat 10/315:40 pm -
Nonstop10h 35m
Deal found 9/9![Lufthansa logo]()
$842
This Alaska Airlines deal was found by Cheapflights users on 9/7. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/225:00 pm -
1 stop14h 52m
Thu 10/298:47 am -
2 stops20h 33m
Deal found 9/7![Alaska Airlines logo]()
$833
This SWISS deal was found by Cheapflights users on 9/6. 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/212:25 pm -
2 stops34h 05m
Mon 1/42:20 pm -
2 stops20h 55m
Deal found 9/6![SWISS logo]()
$992
This SWISS deal was found by Cheapflights users on 9/9. 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/197:30 pm -
2 stops29h 00m
Mon 12/287:25 pm -
2 stops18h 00m
Deal found 9/9![SWISS logo]()
$1,010
This Alaska Airlines deal was found by Cheapflights users on 9/9. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/202:45 pm -
1 stop17h 14m
Sat 1/212:30 pm -
1 stop15h 50m
Deal found 9/9![Alaska Airlines logo]()
$993
Last-minute flights from Heathrow to San FranciscoDiscover last-minute flight deals from Heathrow to San Francisco. Data last updated September 10, 2026 and is based on user searches.
Discover last-minute flight deals from Heathrow to San Francisco. Data last updated September 10, 2026 and is based on user searches.
This Air Canada deal was found by Cheapflights users on 9/9. 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.
Thu 9/1712:05 pm -
2 stops17h 42m
Wed 9/3011:10 am -
1 stop14h 50m
Deal found 9/9![Multiple Airlines logo]()
$561
This United Airlines deal was found by Cheapflights users on 9/9. 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 9/182:50 pm -
2 stops16h 05m
Fri 10/212:28 pm -
1 stop13h 42m
Deal found 9/9![United Airlines logo]()
$549
This Air Canada deal was found by Cheapflights users on 9/9. 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.
Sat 9/192:05 pm -
1 stop15h 43m
Fri 10/28:10 am -
1 stop19h 40m
Deal found 9/9![Air Canada logo]()
$556
This Air Canada deal was found by Cheapflights users on 9/8. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/199:30 am -
1 stop19h 17m
Wed 9/238:30 am -
2 stops17h 30m
Deal found 9/8![Air Canada logo]()
$558
This Air Canada deal was found by Cheapflights users on 9/9. 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 9/229:30 am -
2 stops19h 29m
Sun 9/278:10 am -
1 stop14h 20m
Deal found 9/9![Air Canada logo]()
$559
This United Airlines deal was found by Cheapflights users on 9/9. 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.
Wed 9/232:50 pm -
2 stops16h 05m
Fri 10/99:05 pm -
1 stop14h 35m
Deal found 9/9![United Airlines logo]()
$554
This British Airways deal was found by Cheapflights users on 9/8. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/237:10 pm -
1 stop29h 10m
Fri 10/99:27 am -
1 stop17h 38m
Deal found 9/8![British Airways logo]()
$557
This Air Canada deal was found by Cheapflights users on 9/9. 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.
Sat 9/262:05 pm -
1 stop15h 43m
Thu 10/158:10 am -
1 stop17h 50m
Deal found 9/9![Air Canada logo]()
$550
This Air Canada deal was found by Cheapflights users on 9/9. 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.
Wed 10/712:05 pm -
2 stops19h 15m
Sun 10/114:30 pm -
1 stop12h 50m
Deal found 9/9![Air Canada logo]()
$552
This Air Canada deal was found by Cheapflights users on 9/9. 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 10/2012:05 pm -
2 stops19h 15m
Sun 10/256:30 am -
2 stops19h 00m
Deal found 9/9![Air Canada logo]()
$560
This Air Canada deal was found by Cheapflights users on 9/8. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/239:30 am -
2 stops17h 24m
Fri 10/3010:15 am -
1 stop18h 35m
Deal found 9/8![Multiple Airlines logo]()
$553
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 September 10, 2026.
Search for one-way flight options from Heathrow to San Francisco. Find affordable one-way fares based on user searches. Data last updated September 10, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/6. 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.
Thu 3/43:35 pm -
1 stop17h 08m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/6![Iberia logo]()
$493
This Cheapflightsfares deal was found by Cheapflights users on 9/5. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/178:00 am -
2 stops22h 11m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/5![British Airways logo]()
$494
This SWISS deal was found by Cheapflights users on 9/5. 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/188:05 pm -
1 stop28h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/5![SWISS logo]()
$495
This FlightHub deal was found by Cheapflights users on 9/6. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/176:30 am -
1 stop14h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/6![Lufthansa logo]()
$496
This British Airways deal was found by Cheapflights users on 9/6. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/311:45 am -
Nonstop11h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/6![British Airways logo]()
$498
This British Airways deal was found by Cheapflights users on 9/5. 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.
Sun 12/274:55 pm -
1 stop15h 04m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/5![British Airways logo]()
$499
This Air Canada deal was found by Cheapflights users on 9/6. 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.
Wed 1/62:30 pm -
1 stop31h 21m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/6![Air Canada logo]()
$500
This FlightHub deal was found by Cheapflights users on 9/7. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/111:45 am -
Nonstop11h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/7![Aer Lingus logo]()
$501
This Kiwi.com deal was found by Cheapflights users on 9/7. 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.
Fri 3/55:25 pm -
2 stops29h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/7![Multiple Airlines logo]()
$502
This American Airlines deal was found by Cheapflights users on 9/6. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/148:20 am -
2 stops20h 07m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/6![American Airlines logo]()
$503
This Kiwi.com deal was found by Cheapflights users on 9/5. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/232:10 pm -
1 stop29h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/5![WestJet logo]()
$505
This United Airlines deal was found by Cheapflights users on 9/5. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/208:00 am -
3 stops23h 59m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/5![United Airlines logo]()
$506
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 September 10, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $549 (United Airlines) |
One-way from | $493 (Kiwi.com) |
Popular in | December |
Cheapest in | February |
Average price | $666 |
Good round-trip deal | $666 or less |
Good one-way deal | $569 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 7,457,451 searches. Data last updated September 10, 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 11/15
2:25 pm-4:30 pm
2 stops34h 05m
San Francisco
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$495
LondonSan Francisco
LHR London Heathrow - SFO San Francisco
LHRSFO
London Heathrow
Sat 3/6
11:45 am-2:55 pm
Nonstop11h 10m
San Francisco
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$498
LondonSan Francisco
LHR London Heathrow - SFO San Francisco
LHRSFO
London Heathrow
Thu 3/4
11:45 am-2:55 pm
Nonstop11h 10m
San Francisco
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$498
LondonSan Francisco
LHR London Heathrow - SFO San Francisco
LHRSFO
London Heathrow
Sun 11/15
11:45 am-2:55 pm
Nonstop11h 10m
San Francisco
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$536
Quickest round-trip
LondonSan Francisco
LHR London Heathrow - SFO San Francisco
LHRSFO
London Heathrow
Tue 10/20
10:35 am-1:35 pm
Nonstop11h 00m
San Francisco
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$557
LondonSan Francisco
LHR London Heathrow - SFO San Francisco
LHRSFO
London Heathrow
Mon 12/14
10:05 am-1:20 pm
Nonstop11h 15m
San Francisco
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$557
LondonSan Francisco
LHR London Heathrow - SFO San Francisco
LHRSFO
London Heathrow
Sat 10/3
5:00 pm-10:49 pm
1 stop13h 49m
San Francisco
Sat 7/17
4:44 pm-3:05 pm
1 stop14h 21m
$587
LondonSan Francisco
LHR London Heathrow - SFO San Francisco
LHRSFO
London Heathrow
Wed 10/7
6:30 am-12:40 pm
1 stop14h 10m
San Francisco
Fri 10/16
12:55 pm-7:25 am
Nonstop10h 30m
$623
LondonSan Francisco
LHR London Heathrow - SFO San Francisco
LHRSFO
London Heathrow
Mon 12/21
7:50 pm-10:11 pm
2 stops34h 21m
San Francisco
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$662
LondonSan Francisco
LHR London Heathrow - SFO San Francisco
LHRSFO
London Heathrow
Thu 12/31
3:10 pm-9:26 am
2 stops26h 16m
San Francisco
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$664
Showing 1-10 of 24 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 September.
| 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 Accuracy- | Trust Score*3 stars | |
| Price Accuracy3 stars | 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 $610). Flying from London Heathrow Airport to San Francisco in December is currently the most expensive (average of $869). 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 September 10, 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 143 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 12% 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 September 10, 2026.
Get a feel of what it's like to fly with Austrian Airlines,United Airlines, andVirgin Atlantic 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.
Overall
7.6
Boarding
7.6
Entertainment
6.8
Food
6.8
Crew
8.1
Comfort
7.3
Reviews
1 / 20
8.0
ExcellentAnonymous,Jul 2026
VIE - EWR
Overall
7.6
Boarding
7.6
Entertainment
6.8
Food
6.8
Crew
8.1
Comfort
7.3
Reviews
1 / 20
8.0
ExcellentAnonymous,Jul 2026
VIE - EWR
Overall
7.6
Boarding
7.6
Entertainment
6.8
Food
6.8
Crew
8.1
Comfort
7.3
Reviews
1 / 20
8.0
ExcellentAnonymous,Jul 2026
VIE - EWR
Overall
7.6
Boarding
7.6
Entertainment
6.8
Food
6.8
Crew
8.1
Comfort
7.3
Reviews
1 / 20
8.0
ExcellentAnonymous,Jul 2026
VIE - EWR
Overall
7.6
Boarding
7.6
Entertainment
6.8
Food
6.8
Crew
8.1
Comfort
7.3
Reviews
1 / 20
8.0
ExcellentAnonymous,Jul 2026
VIE - EWR
Overall
7.6
Boarding
7.6
Entertainment
6.8
Food
6.8
Crew
8.1
Comfort
7.3
Reviews
1 / 20
8.0
ExcellentAnonymous,Jul 2026
VIE - EWR
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
Emeryville
San Bruno
Burlingame
Rancho Cordova
Roseville
Fairfield
Cupertino
Newark
Hayward
San Ramon
Redwood City
Manteca
Vallejo
San Carlos
Turlock
Davis
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Heathrow and San Francisco flights
Browse other Heathrow and San Francisco flight options. Last updated on September 10, 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 7,457,451 searches. Data last updated September 10, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$449 | Average$500 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$506 | Average$861 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$520 | Average$842 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$535 | Average$703 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$538 | Average$806 | FlexibilityNo cancel fee | On-time72% | |
| Cheapest$547 | Average$762 | FlexibilityNo cancel fee | On-time78% | |
| Cheapest$557 | Average$827 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$561 | Average$875 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$573 | Average$770 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$589 | Average$843 | FlexibilityNo cancel fee | On-time71% |