$411+ Cheap flights from San Francisco (SFO) to Heathrow (LHR)
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 10/26. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — LHR
Nov 2 — Nov 91
Round-trip
1 adult, Economy
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Find cheap flights from San Francisco to Heathrow 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 San Francisco to London Heathrow are usually found in February or January, booked 78 days in advance, depart on a Tuesday or Monday and return on a Wednesday
Cheap flight deals from San Francisco to Heathrow
Cheapest
Best
Last-minute
One-way
Cheapest flights from San Francisco to HeathrowExplore the most affordable flight options available from San Francisco to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 3, 2026.
Explore the most affordable flight options available from San Francisco to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 3, 2026.
This Kiwi.com deal was found by Cheapflights users on 10/1. 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.
Sun 11/14:45 pm -
1 stop15h 15m
Tue 11/176:40 am -
1 stop16h 10m
Deal found 10/1![Scandinavian Airlines logo]()
$733
This Scandinavian Airlines deal was found by Cheapflights users on 9/29. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/284:45 pm -
2 stops60h 10m
Wed 12/210:35 am -
2 stops60h 15m
Deal found 9/29![Scandinavian Airlines logo]()
$734
This Justfly.com deal was found by Cheapflights users on 9/28. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/94:35 pm -
1 stop16h 55m
Wed 12/166:00 am -
1 stop16h 45m
Deal found 9/28![TAP AIR PORTUGAL logo]()
$735
This Booking.com deal was found by Cheapflights users on 9/28. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/184:35 pm -
1 stop16h 55m
Tue 11/246:30 pm -
1 stop28h 15m
Deal found 9/28![TAP AIR PORTUGAL logo]()
$736
This Booking.com deal was found by Cheapflights users on 9/29. 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 Booking.com is selected, and click “Compare selected ” under the list of providers to see comparable flight deals.
Sat 10/315:35 pm -
1 stop21h 00m
Sat 11/76:00 am -
1 stop16h 45m
Deal found 9/29![TAP AIR PORTUGAL logo]()
$737
This deal was found by Cheapflights users on 9/28. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/44:45 pm -
1 stop16h 55m
Sat 11/76:40 am -
1 stop16h 10m
Deal found 9/28![Scandinavian Airlines logo]()
$738
This Booking.com deal was found by Cheapflights users on 9/28. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/315:35 pm -
1 stop21h 00m
Sun 11/86:30 pm -
1 stop27h 55m
Deal found 9/28![TAP AIR PORTUGAL logo]()
$739
This Scandinavian Airlines deal was found by Cheapflights users on 10/1. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/234:45 pm -
2 stops40h 40m
Mon 10/261:55 pm -
2 stops32h 55m
Deal found 10/1![Scandinavian Airlines logo]()
$741
This FlightHub deal was found by Cheapflights users on 10/1. 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.
Tue 10/275:45 pm -
2 stops56h 10m
Sat 10/316:40 am -
1 stop16h 10m
Deal found 10/1![Scandinavian Airlines logo]()
$743
This deal was found by Cheapflights users on 9/29. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/224:30 pm -
1 stop18h 20m
Mon 10/266:00 am -
1 stop16h 25m
Deal found 9/29![TAP AIR PORTUGAL logo]()
$744
This Cheapflightsfares deal was found by Cheapflights users on 9/29. 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.
Fri 10/308:15 pm -
1 stop15h 40m
Tue 11/36:30 pm -
1 stop28h 15m
Deal found 9/29![TAP AIR PORTUGAL logo]()
$745
This oojo deal was found by Cheapflights users on 10/1. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/14:45 pm -
1 stop20h 55m
Wed 11/185:00 pm -
1 stop29h 50m
Deal found 10/1![Scandinavian Airlines logo]()
$746
Best flights from San Francisco to HeathrowDiscover carefully curated flight deals from San Francisco to Heathrow that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 3, 2026.
Discover carefully curated flight deals from San Francisco to Heathrow that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 3, 2026.
This Scandinavian Airlines deal was found by Cheapflights users on 9/27. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/24:45 pm -
2 stops20h 50m
Tue 11/176:40 am -
1 stop16h 10m
Deal found 9/27![Scandinavian Airlines logo]()
$816
This United Airlines deal was found by Cheapflights users on 9/27. 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.
Mon 11/3012:50 pm -
Nonstop10h 35m
Wed 12/164:40 pm -
1 stop34h 55m
Deal found 9/27![United Airlines logo]()
$898
This SWISS deal was found by Cheapflights users on 9/28. 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.
Thu 11/127:25 pm -
2 stops18h 00m
Mon 11/232:25 pm -
2 stops34h 05m
Deal found 9/28![SWISS logo]()
$1,007
This Scandinavian Airlines deal was found by Cheapflights users on 9/29. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/164:45 pm -
2 stops20h 50m
Thu 11/196:40 am -
1 stop16h 10m
Deal found 9/29![Scandinavian Airlines logo]()
$840
This United Airlines deal was found by Cheapflights users on 9/27. 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 11/812:50 pm -
Nonstop10h 35m
Thu 11/1910:05 am -
Nonstop11h 15m
Deal found 9/27![United Airlines logo]()
$917
This Scandinavian Airlines deal was found by Cheapflights users on 10/1. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/154:45 pm -
2 stops20h 50m
Sun 11/226:40 am -
1 stop16h 10m
Deal found 10/1![Scandinavian Airlines logo]()
$872
This United Airlines deal was found by Cheapflights users on 9/28. 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.
Thu 11/196:30 am -
1 stop21h 20m
Thu 11/261:45 pm -
Nonstop11h 10m
Deal found 9/28![United Airlines logo]()
$967
This Scandinavian Airlines deal was found by Cheapflights users on 9/29. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/24:45 pm -
2 stops20h 50m
Thu 11/57:50 pm -
2 stops27h 00m
Deal found 9/29![Scandinavian Airlines logo]()
$890
This Scandinavian Airlines deal was found by Cheapflights users on 9/30. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/34:45 pm -
1 stop16h 55m
Sat 11/73:35 pm -
2 stops31h 15m
Deal found 9/30![Scandinavian Airlines logo]()
$908
This Scandinavian Airlines deal was found by Cheapflights users on 10/1. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/24:45 pm -
2 stops20h 50m
Mon 11/97:30 pm -
1 stop27h 20m
Deal found 10/1![Scandinavian Airlines logo]()
$909
This Scandinavian Airlines deal was found by Cheapflights users on 9/30. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/114:45 pm -
1 stop20h 55m
Sat 10/173:35 pm -
2 stops31h 05m
Deal found 9/30![Scandinavian Airlines logo]()
$925
Last-minute flights from San Francisco to HeathrowDiscover last-minute flight deals from San Francisco to Heathrow. Data last updated October 3, 2026 and is based on user searches.
Discover last-minute flight deals from San Francisco to Heathrow. Data last updated October 3, 2026 and is based on user searches.
This deal was found by Cheapflights users on 9/28. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/44:45 pm -
1 stop16h 55m
Sat 11/76:40 am -
1 stop16h 10m
Deal found 9/28![Scandinavian Airlines logo]()
$738
This deal was found by Cheapflights users on 9/29. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/224:30 pm -
1 stop18h 20m
Mon 10/266:00 am -
1 stop16h 25m
Deal found 9/29![TAP AIR PORTUGAL logo]()
$744
This Scandinavian Airlines deal was found by Cheapflights users on 10/1. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/234:45 pm -
2 stops40h 40m
Mon 10/261:55 pm -
2 stops32h 55m
Deal found 10/1![Scandinavian Airlines logo]()
$741
This FlightHub deal was found by Cheapflights users on 10/1. 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.
Tue 10/275:45 pm -
2 stops56h 10m
Sat 10/316:40 am -
1 stop16h 10m
Deal found 10/1![Scandinavian Airlines logo]()
$743
This Cheapflightsfares deal was found by Cheapflights users on 9/29. 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.
Fri 10/308:15 pm -
1 stop15h 40m
Tue 11/36:30 pm -
1 stop28h 15m
Deal found 9/29![TAP AIR PORTUGAL logo]()
$745
This Booking.com deal was found by Cheapflights users on 9/29. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/315:35 pm -
1 stop21h 00m
Sat 11/76:00 am -
1 stop16h 45m
Deal found 9/29![TAP AIR PORTUGAL logo]()
$737
This Booking.com deal was found by Cheapflights users on 9/28. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/315:35 pm -
1 stop21h 00m
Fri 11/67:55 pm -
1 stop26h 50m
Deal found 9/28![TAP AIR PORTUGAL logo]()
$739
This Kiwi.com deal was found by Cheapflights users on 10/1. 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.
Sun 11/14:45 pm -
1 stop15h 15m
Tue 11/176:40 am -
1 stop16h 10m
Deal found 10/1![Scandinavian Airlines logo]()
$733
This oojo deal was found by Cheapflights users on 10/1. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/14:45 pm -
1 stop20h 55m
Wed 11/185:00 pm -
1 stop29h 50m
Deal found 10/1![Scandinavian Airlines logo]()
$746
This lol.travel deal was found by Cheapflights users on 10/2. 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 lol.travel is selected, and click “Compare selected ” under the list of providers to see comparable flight deals.
Sun 11/84:45 pm -
1 stop20h 55m
Mon 11/236:40 am -
1 stop16h 10m
Deal found 10/2![Scandinavian Airlines logo]()
$747
This Booking.com deal was found by Cheapflights users on 9/28. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/184:35 pm -
1 stop16h 55m
Tue 11/246:30 pm -
1 stop28h 15m
Deal found 9/28![TAP AIR PORTUGAL logo]()
$736
This Scandinavian Airlines deal was found by Cheapflights users on 9/29. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/284:45 pm -
2 stops60h 10m
Wed 12/210:35 am -
2 stops60h 15m
Deal found 9/29![Scandinavian Airlines logo]()
$734
One-way flights from San Francisco to HeathrowSearch for one-way flight options from San Francisco to Heathrow. Find affordable one-way fares based on user searches. Data last updated October 3, 2026.
Search for one-way flight options from San Francisco to Heathrow. Find affordable one-way fares based on user searches. Data last updated October 3, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/29. 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.
Mon 10/269:03 am -
3 stops25h 37m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/29![Multiple Airlines logo]()
$411
This Kiwi.com deal was found by Cheapflights users on 9/30. 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 11/269:00 am -
3 stops19h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/30![Multiple Airlines logo]()
$412
This Kiwi.com deal was found by Cheapflights users on 10/2. 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 11/1812:13 pm -
2 stops40h 37m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/2![Multiple Airlines logo]()
$413
This Kiwi.com deal was found by Cheapflights users on 9/28. 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.
Mon 10/191:25 pm -
2 stops22h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/28![Multiple Airlines logo]()
$416
This Kiwi.com deal was found by Cheapflights users on 9/29. 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 10/299:03 am -
3 stops41h 17m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/29![Multiple Airlines logo]()
$417
This Cheapflightsfares deal was found by Cheapflights users on 9/30. 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.
Mon 10/125:35 pm -
1 stop14h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/30![Aer Lingus logo]()
$421
This Kiwi.com deal was found by Cheapflights users on 9/29. 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.
Sun 11/295:20 pm -
1 stop30h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/29![Aer Lingus logo]()
$422
Find flight deals from San Francisco to Heathrow
Discover tips and strategies to find the most affordable flight options for your journey from San Francisco (SFO) to Heathrow (LHR). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated October 3, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $733 (Kiwi.com) |
One-way from | $411 (Kiwi.com) |
Popular in | June |
Cheapest in | February |
Average price | $868 |
Good round-trip deal | $901 or less |
Good one-way deal | $466 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from San Francisco to Heathrow that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated October 3, 2026.
Use the filters below to find and compare flights from San Francisco to London Heathrow Airport that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
San FranciscoLondon
SFO San Francisco - LHR London Heathrow
SFOLHR
San Francisco
Sat 12/26
6:56 pm-9:20 pm
2 stops18h 24m
London Heathrow
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$423
San FranciscoLondon
SFO San Francisco - LHR London Heathrow
SFOLHR
San Francisco
Tue 10/6
6:00 am-5:20 pm
2 stops27h 20m
London Heathrow
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$446
San FranciscoLondon
SFO San Francisco - LHR London Heathrow
SFOLHR
San Francisco
Tue 11/10
4:40 pm-11:15 am
Nonstop10h 35m
London Heathrow
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$459
San FranciscoLondon
SFO San Francisco - LHR London Heathrow
SFOLHR
San Francisco
Sun 10/25
10:44 am-6:55 am
1 stop13h 11m
London Heathrow
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$463
San FranciscoLondon
SFO San Francisco - LHR London Heathrow
SFOLHR
San Francisco
Thu 12/24
3:33 pm-8:55 pm
1 stop21h 22m
London Heathrow
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$496
San FranciscoLondon
SFO San Francisco - LHR London Heathrow
SFOLHR
San Francisco
Tue 12/15
10:00 pm-9:40 pm
1 stop15h 40m
London Heathrow
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$496
San FranciscoLondon
SFO San Francisco - LHR London Heathrow
SFOLHR
San Francisco
Fri 12/25
7:15 pm-12:40 pm
1 stop33h 25m
London Heathrow
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$497
San FranciscoLondon
SFO San Francisco - LHR London Heathrow
SFOLHR
San Francisco
Fri 10/30
10:15 am-11:50 am
1 stop18h 35m
London Heathrow
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$509
Quickest round-trip
San FranciscoLondon
SFO San Francisco - LHR London Heathrow
SFOLHR
San Francisco
Sat 12/26
4:40 pm-10:55 am
Nonstop10h 15m
London Heathrow
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$539
San FranciscoLondon
SFO San Francisco - LHR London Heathrow
SFOLHR
San Francisco
Fri 10/9
8:44 pm-8:45 pm
1 stop16h 01m
London Heathrow
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$541
Showing 1-10 of 22 resultsSorted by cheapest first
Compare providers for flights from San Francisco to Heathrow
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 San Francisco to Heathrow in October.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy2 stars | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on San Francisco-London Heathrow Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on San Francisco-London Heathrow Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from San Francisco-London Heathrow Airport flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on San Francisco-London Heathrow Airport 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 San Francisco-London Heathrow Airport 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 San Francisco to Heathrow
Have a flexible travel schedule? Discover the best time to fly to Heathrow from San Francisco with our price prediction graph.
SFO-LHR
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 San Francisco to London Heathrow Airport
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How far ahead should I book a flight from San Francisco to London Heathrow Airport?
Booking 86 days in advance of your planned departure date is, on average, the best time to get cheap flights from San Francisco to London Heathrow Airport. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
What is the cheapest month to book a flight from San Francisco to London Heathrow Airport?
Currently, February is the cheapest month in which you can book a flight from San Francisco to London Heathrow Airport (average of $651). Flying from San Francisco to London Heathrow Airport in June is currently the most expensive (average of $1,333). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from SFO to LHR?
Find hourly flight availability from San Francisco to Heathrow. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 3, 2026.
One of the essential ways to save on airfare from San Francisco to London Heathrow Airport is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the morning could potentially save you up to 16% on airfare.
What is the cheapest day to fly from San Francisco to London Heathrow Airport?
Use this chart to determine the cheapest time to fly round-trip from San Francisco to Heathrow. Price data was last updated on September 26, 2026.
Travelers seeking maximum savings on their San Francisco to London Heathrow Airport flight should consider departing on Monday mornings when fares are most often at their lowest. Saturday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
How often are flights from San Francisco to London delayed?
About 11% of weekly flights between San Francisco and London have experienced delays in the past year, with the average delay time being 152 minutes.
What is the most punctual flight time for San Francisco to London flights?
Historically, flights departing in the evening are less likely to be delayed, whereas flights leaving in the morning tend to experience delays more often.
What day of the week experiences the fewest flight delays on this route?
Monday tends to have the lowest number of delays on this route, whereas Thursday has historically faced a higher average of delays compared to other days of the week.
Which airline has the best punctuality record on San Francisco to London flights?
Over the last year, British Airways have had the lowest number of delays on this route, with just 9% of flights being delayed.
What’s the top layover airport for flights from San Francisco to London Heathrow Airport?
Share of 1-stop round-trip flights from San Francisco to London Heathrow Airport chosen by Cheapflights users in the past 12 months, using the same layover each way.
Copenhagen (CPH) – chosen by Cheapflights users on 79% of 1-stop itineraries from San Francisco to London Heathrow Airport on Cheapflights.
What’s the cheapest layover airport for flights from San Francisco to London Heathrow Airport?
Average round-trip fare for 1-stop flights from San Francisco to London Heathrow Airport, chosen by Cheapflights users in the past 12 months, with the same layover each way.
Istanbul (IST) is the most affordable 1-stop option, with an average round-trip price of $812.
What’s the fastest layover option from San Francisco to London Heathrow Airport?
Shortest average travel time for 1-stop one-way flights from San Francisco to London Heathrow Airport, 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: 13h 25m.
Which airport typically offers the quickest layover for flights from San Francisco to London Heathrow Airport?
Average layover duration for 1-stop one-way flights from San Francisco to London Heathrow Airport, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.
Flights via Istanbul (IST) offer the fastest connection on this route, with an average layover time of 2h 13m.
The best insider tips for San Francisco to London Heathrow Airport 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 San Francisco to London Heathrow Airport trip
Our travel experts
Reviews of airlines servicing Heathrow
Get insights into the airlines that provide service to Heathrow. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Heathrow. Reviews last updated October 3, 2026.
Get a feel of what it's like to fly with Delta,Scandinavian Airlines, andUnited Airlines from San Francisco to London Heathrow Airport by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Crew
8.5
Comfort
7.8
Overall
7.8
Boarding
8.1
Food
7.2
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
LAX - LHR
Crew
8.5
Comfort
7.8
Overall
7.8
Boarding
8.1
Food
7.2
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
LAX - LHR
Crew
8.5
Comfort
7.8
Overall
7.8
Boarding
8.1
Food
7.2
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
LAX - LHR
Crew
8.5
Comfort
7.8
Overall
7.8
Boarding
8.1
Food
7.2
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
LAX - LHR
Crew
8.5
Comfort
7.8
Overall
7.8
Boarding
8.1
Food
7.2
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
LAX - LHR
Crew
8.5
Comfort
7.8
Overall
7.8
Boarding
8.1
Food
7.2
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
LAX - LHR
Related info for your journey
Find useful and relevant information for your journey from San Francisco to Heathrow. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near London Heathrow Airport?
Book flights to London Heathrow Airport if you plan to visit one of these locationsIlford
Dorking
Gatwick
Hounslow
Harrow
Wembley
Southend-on-Sea
Basingstoke
Watford
Northampton
Dartford
Winchester
Croydon
Chipping Norton
Kingston upon Thames
Eastbourne
Slough
Stansted
Sutton
Luton
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Other flights to Heathrow
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Top 10 airlines flying from San Francisco to Heathrow
Discover the top 10 airlines that operate flights from San Francisco to Heathrow. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated October 3, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$435 | Average$623 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$454 | Average$969 | FlexibilityNo cancel fee | On-time72% | |
| Cheapest$487 | Average$860 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$509 | Average$1,009 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$543 | Average$840 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$561 | Average$856 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$571 | Average$989 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$579 | Average$1,003 | FlexibilityNo cancel fee | On-time79% | |
| Cheapest$585 | Average$1,121 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$593 | Average$884 | FlexibilityNo cancel fee | On-time70% |