$530+ 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 11/6. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SFO
Nov 7 — Nov 141
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 January, booked 69 days in advance, depart on a Wednesday or Tuesday 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 October 8, 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 October 8, 2026.
This lol.travel deal was found by Cheapflights users on 10/6. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/62:45 pm -
1 stop14h 02m
Thu 11/123:08 pm -
1 stop13h 12m
Deal found 10/6![Alaska Airlines logo]()
$530
This lol.travel deal was found by Cheapflights users on 10/4. 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 11/12:45 pm -
1 stop16h 00m
Sat 11/143:08 pm -
1 stop13h 12m
Deal found 10/4![Alaska Airlines logo]()
$531
This Ticket deal was found by Cheapflights users on 10/4. 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 Ticket is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/111:50 am -
Nonstop11h 00m
Sat 11/144:40 pm -
Nonstop10h 15m
Deal found 10/4![Virgin Atlantic logo]()
$541
This Trip.com deal was found by Cheapflights users on 10/8. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/62:45 pm -
1 stop31h 25m
Sat 11/143:08 pm -
1 stop13h 12m
Deal found 10/8![Alaska Airlines logo]()
$551
This MakeMyTrip deal was found by Cheapflights users on 10/4. 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 MakeMyTrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/186:00 am -
1 stop16h 45m
Wed 11/254:35 pm -
1 stop16h 55m
Deal found 10/4![TAP AIR PORTUGAL logo]()
$552
This lol.travel deal was found by Cheapflights users on 10/7. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/96:00 am -
1 stop16h 25m
Mon 11/234:35 pm -
1 stop21h 00m
Deal found 10/7![TAP AIR PORTUGAL logo]()
$556
This lastminute.com deal was found by Cheapflights users on 10/4. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/38:25 pm -
1 stop23h 20m
Sat 11/144:40 pm -
Nonstop10h 15m
Deal found 10/4![Virgin Atlantic logo]()
$559
This Justfly.com deal was found by Cheapflights users on 10/6. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/282:45 pm -
1 stop14h 04m
Mon 11/25:42 pm -
1 stop34h 38m
Deal found 10/6![Alaska Airlines logo]()
$560
This Justfly.com deal was found by Cheapflights users on 10/8. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/72:45 pm -
1 stop26h 56m
Mon 11/166:08 am -
1 stop22h 12m
Deal found 10/8![Alaska 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 October 8, 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 October 8, 2026.
This Alaska Airlines deal was found by Cheapflights users on 10/4. 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.
Tue 12/152:45 pm -
1 stop14h 07m
Sat 1/99:25 am -
1 stop18h 55m
Deal found 10/4![Alaska Airlines logo]()
$569
This Delta deal was found by Cheapflights users on 10/8. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/196:30 am -
1 stop13h 15m
Mon 11/304:40 pm -
Nonstop10h 15m
Deal found 10/8![Delta logo]()
$617
This KLM deal was found by Cheapflights users on 10/7. 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.
Fri 11/611:50 am -
Nonstop11h 00m
Mon 11/94:40 pm -
Nonstop10h 15m
Deal found 10/7![KLM logo]()
$645
This Virgin Atlantic deal was found by Cheapflights users on 10/8. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/88:55 am -
1 stop19h 55m
Sat 7/310:31 am -
1 stop14h 19m
Deal found 10/8![Virgin Atlantic logo]()
$661
This British Airways deal was found by Cheapflights users on 10/5. 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.
Fri 2/123:20 pm -
Nonstop11h 25m
Sat 2/208:35 pm -
Nonstop10h 35m
Deal found 10/5![British Airways logo]()
$700
This SWISS deal was found by Cheapflights users on 10/3. 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 11/72:25 pm -
2 stops34h 05m
Mon 12/77:25 pm -
2 stops18h 00m
Deal found 10/3![SWISS logo]()
$747
This Alaska Airlines deal was found by Cheapflights users on 10/6. 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 11/72:45 pm -
1 stop14h 02m
Thu 11/1212:13 pm -
1 stop16h 07m
Deal found 10/6![Alaska Airlines logo]()
$577
This Delta deal was found by Cheapflights users on 10/7. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/2111:50 am -
Nonstop11h 00m
Wed 12/94:40 pm -
Nonstop10h 15m
Deal found 10/7![Delta logo]()
$632
This Alaska Airlines deal was found by Cheapflights users on 10/4. 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 2/122:45 pm -
1 stop15h 24m
Sat 2/209:15 am -
1 stop19h 05m
Deal found 10/4![Alaska Airlines logo]()
$581
This British Airways deal was found by Cheapflights users on 10/3. 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.
Tue 11/311:45 am -
Nonstop11h 10m
Sun 11/87:50 am -
1 stop15h 00m
Deal found 10/3![British Airways logo]()
$708
This SWISS deal was found by Cheapflights users on 10/6. 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.
Sat 11/77:00 am -
2 stops17h 30m
Tue 11/102:20 pm -
2 stops20h 55m
Deal found 10/6![SWISS logo]()
$783
Last-minute flights from Heathrow to San FranciscoDiscover last-minute flight deals from Heathrow to San Francisco. Data last updated October 8, 2026 and is based on user searches.
Discover last-minute flight deals from Heathrow to San Francisco. Data last updated October 8, 2026 and is based on user searches.
This Justfly.com deal was found by Cheapflights users on 10/6. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/135:00 pm -
1 stop35h 17m
Thu 10/229:43 am -
1 stop21h 22m
Deal found 10/6![Alaska Airlines logo]()
$561
This Expedia deal was found by Cheapflights users on 10/6. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/135:00 pm -
1 stop13h 49m
Tue 10/205:45 pm -
1 stop13h 20m
Deal found 10/6![Alaska Airlines logo]()
$567
This Alaska Airlines deal was found by Cheapflights users on 10/4. 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.
Tue 10/135:00 pm -
1 stop33h 01m
Sun 10/186:07 am -
1 stop24h 58m
Deal found 10/4![Alaska Airlines logo]()
$587
This Alaska Airlines deal was found by Cheapflights users on 10/5. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/135:00 pm -
1 stop13h 49m
Wed 11/1810:39 am -
1 stop17h 41m
Deal found 10/5![Alaska Airlines logo]()
$714
This Alaska Airlines deal was found by Cheapflights users on 10/4. 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.
Wed 10/145:00 pm -
1 stop13h 49m
Wed 10/211:51 pm -
1 stop17h 14m
Deal found 10/4![Alaska Airlines logo]()
$569
This Mytrip deal was found by Cheapflights users on 10/5. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/145:00 pm -
1 stop13h 49m
Tue 10/205:45 pm -
1 stop13h 20m
Deal found 10/5![Alaska Airlines logo]()
$622
This Trip.com deal was found by Cheapflights users on 10/4. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/155:00 pm -
1 stop14h 52m
Sat 2/209:15 am -
1 stop19h 05m
Deal found 10/4![Alaska Airlines logo]()
$730
This Expedia deal was found by Cheapflights users on 10/4. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/156:40 am -
1 stop16h 00m
Sat 2/204:45 pm -
1 stop15h 15m
Deal found 10/4![Scandinavian Airlines logo]()
$750
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 October 8, 2026.
Search for one-way flight options from Heathrow to San Francisco. Find affordable one-way fares based on user searches. Data last updated October 8, 2026.
This Air Canada deal was found by Cheapflights users on 10/4. 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 1/296:50 am -
2 stops22h 43m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/4![Air Canada logo]()
$541
This TravelUp deal was found by Cheapflights users on 10/5. 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 TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/2110:05 am -
Nonstop11h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/5![Lufthansa logo]()
$543
This Kiwi.com deal was found by Cheapflights users on 10/4. 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 11/39:55 am -
2 stops36h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/4![Multiple Airlines logo]()
$544
This Kiwi.com deal was found by Cheapflights users on 10/7. 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.
Wed 11/48:50 pm -
2 stops51h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/7![Multiple Airlines logo]()
$545
This Kiwi.com deal was found by Cheapflights users on 10/5. 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.
Sat 12/263:15 pm -
2 stops40h 44m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/5![Aer Lingus logo]()
$546
This Kiwi.com deal was found by Cheapflights users on 10/6. 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.
Sun 11/89:15 am -
2 stops37h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/6![Multiple Airlines logo]()
$547
This TravelUp deal was found by Cheapflights users on 10/7. 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 TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/68:05 am -
1 stop23h 49m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/7![JetBlue logo]()
$548
This Trip.com deal was found by Cheapflights users on 10/8. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/198:50 pm -
2 stops49h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/8![Multiple Airlines logo]()
$549
This Cheapflightsfares deal was found by Cheapflights users on 10/6. 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.
Sun 2/146:50 am -
2 stops20h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/6![Brussels Airlines logo]()
$550
This United Airlines deal was found by Cheapflights users on 10/4. 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 11/261:45 pm -
Nonstop11h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/4![United Airlines logo]()
$551
This Kiwi.com deal was found by Cheapflights users on 10/6. 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 11/112:50 pm -
1 stop33h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/6![WestJet logo]()
$552
This Kiwi.com deal was found by Cheapflights users on 10/7. 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.
Wed 10/282:50 pm -
1 stop33h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/7![WestJet logo]()
$553
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 October 8, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $530 (lol.travel) |
Popular in | December |
Cheapest in | February |
Average price | $697 |
Good round-trip deal | $543 or less |
Good one-way deal | $538 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 October 8, 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
Mon 4/5
10:45 am-1:50 pm
Nonstop11h 05m
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
Tue 1/5
4:40 pm-9:30 pm
2 stops36h 50m
San Francisco
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$567
LondonSan Francisco
LHR London Heathrow - SFO San Francisco
LHRSFO
London Heathrow
Tue 12/15
2:45 pm-8:52 pm
1 stop14h 07m
San Francisco
Sat 1/9
9:25 am-12:20 pm
1 stop18h 55m
$569
LondonSan Francisco
LHR London Heathrow - SFO San Francisco
LHRSFO
London Heathrow
Sat 11/7
2:45 pm-8:47 pm
1 stop14h 02m
San Francisco
Thu 11/12
12:13 pm-12:20 pm
1 stop16h 07m
$577
LondonSan Francisco
LHR London Heathrow - SFO San Francisco
LHRSFO
London Heathrow
Fri 2/12
2:45 pm-10:09 pm
1 stop15h 24m
San Francisco
Sat 2/20
9:15 am-12:20 pm
1 stop19h 05m
$581
LondonSan Francisco
LHR London Heathrow - SFO San Francisco
LHRSFO
London Heathrow
Thu 11/19
6:30 am-11:45 am
1 stop13h 15m
San Francisco
Mon 11/30
4:40 pm-10:55 am
Nonstop10h 15m
$617
LondonSan Francisco
LHR London Heathrow - SFO San Francisco
LHRSFO
London Heathrow
Sat 11/21
11:50 am-2:50 pm
Nonstop11h 00m
San Francisco
Wed 12/9
4:40 pm-10:55 am
Nonstop10h 15m
$632
LondonSan Francisco
LHR London Heathrow - SFO San Francisco
LHRSFO
London Heathrow
Fri 11/6
11:50 am-2:50 pm
Nonstop11h 00m
San Francisco
Mon 11/9
4:40 pm-10:55 am
Nonstop10h 15m
$645
LondonSan Francisco
LHR London Heathrow - SFO San Francisco
LHRSFO
London Heathrow
Fri 1/8
8:55 am-8:50 pm
1 stop19h 55m
San Francisco
Sat 7/3
10:31 am-8:50 am
1 stop14h 19m
$661
LondonSan Francisco
LHR London Heathrow - SFO San Francisco
LHRSFO
London Heathrow
Fri 1/8
10:05 am-1:20 pm
Nonstop11h 15m
San Francisco
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$666
Showing 1-10 of 21 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 October.
| 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 Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 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
Prices
Airlines
Delays
More
How far ahead should I book a flight from London Heathrow Airport to San Francisco?
The price you pay for your flight from London Heathrow Airport to San Francisco may vary depending on when you book. For the best chance of a lower fare, look to book 68 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
What is the cheapest month to book a flight from London Heathrow Airport to San Francisco?
Currently, February is the cheapest month in which you can book a flight from London Heathrow Airport to San Francisco (average of $628). Flying from London Heathrow Airport to San Francisco in December is currently the most expensive (average of $861). 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 October 8, 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 13% of weekly flights between London and San Francisco have experienced delays in the past year, with the average delay time being 144 minutes.
What is the most punctual flight time for London to San Francisco flights?
Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.
What day of the week experiences the fewest flight delays on this route?
Friday tends to have the lowest number of delays on this route, whereas Saturday has historically faced a higher average of delays compared to other days of the week.
Which airline has the best punctuality record on London to San Francisco flights?
Over the 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 October 8, 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
Comfort
7.3
Entertainment
7.5
Food
6.9
Overall
7.5
Crew
8.1
Reviews
1 / 20
10.0
ExcellentEdwin,May 2026
LHR - LAX
Boarding
7.7
Comfort
7.3
Entertainment
7.5
Food
6.9
Overall
7.5
Crew
8.1
Reviews
1 / 20
10.0
ExcellentEdwin,May 2026
LHR - LAX
Boarding
7.7
Comfort
7.3
Entertainment
7.5
Food
6.9
Overall
7.5
Crew
8.1
Reviews
1 / 20
10.0
ExcellentEdwin,May 2026
LHR - LAX
Boarding
7.7
Comfort
7.3
Entertainment
7.5
Food
6.9
Overall
7.5
Crew
8.1
Reviews
1 / 20
10.0
ExcellentEdwin,May 2026
LHR - LAX
Boarding
7.7
Comfort
7.3
Entertainment
7.5
Food
6.9
Overall
7.5
Crew
8.1
Reviews
1 / 20
10.0
ExcellentEdwin,May 2026
LHR - LAX
Boarding
7.7
Comfort
7.3
Entertainment
7.5
Food
6.9
Overall
7.5
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
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Hayward
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Cupertino
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San Ramon
Manteca
Vallejo
San Carlos
Turlock
Davis
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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 October 8, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$449 | Average$500 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$506 | Average$870 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$514 | Average$778 | FlexibilityNo cancel fee | On-time78% | |
| Cheapest$520 | Average$848 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$526 | Average$778 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$538 | Average$740 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$561 | Average$893 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$598 | Average$794 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$614 | Average$787 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$630 | Average$834 | FlexibilityNo cancel fee | On-time72% |