$544+ Cheap flights from Heathrow (LHR) to San Diego (SAN)
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 11/15. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SAN
Oct 10 — Oct 171
Round-trip
1 adult, Economy
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Find cheap flights from Heathrow to San Diego 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 Diego are usually found in February or January, booked 81 days in advance, depart on a Wednesday or Monday and return on a Wednesday
Cheap flight deals from Heathrow to San Diego
Cheapest
Best
Last-minute
One-way
Cheapest flights from Heathrow to San DiegoExplore the most affordable flight options available from Heathrow to San Diego. 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 Diego. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 10, 2026.
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 10/77:25 am -
1 stop16h 00m
Thu 10/2912:39 pm -
1 stop14h 01m
Deal found 9/8![Lufthansa logo]()
$833
This Expedia 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/38:55 am -
1 stop19h 06m
Wed 10/77:40 pm -
Nonstop10h 40m
Deal found 9/5![Iberia logo]()
$834
This Globehunters 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 Globehunters is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1712:45 pm -
Nonstop11h 25m
Sat 11/288:00 am -
1 stop18h 25m
Deal found 9/6![Multiple Airlines logo]()
$835
This Travcart 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 Travcart is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/204:25 pm -
1 stop33h 28m
Wed 10/287:00 pm -
Nonstop10h 40m
Deal found 9/6![Finnair logo]()
$836
This Travcart 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 Travcart is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/209:45 am -
1 stop21h 34m
Wed 10/288:00 am -
1 stop15h 50m
Deal found 9/5![Multiple Airlines logo]()
$837
This TravelUp 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 TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/239:45 am -
1 stop15h 44m
Sat 10/107:40 pm -
Nonstop10h 40m
Deal found 9/9![British Airways logo]()
$838
This TravelUp 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 TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/218:40 am -
1 stop33h 29m
Mon 11/99:40 pm -
1 stop16h 00m
Deal found 9/8![JetBlue logo]()
$839
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 9/199:30 am -
2 stops17h 00m
Mon 10/57:00 am -
2 stops15h 35m
Deal found 9/9![Multiple Airlines logo]()
$840
This Scandinavian 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/146:40 am -
2 stops25h 06m
Wed 10/2810:57 am -
3 stops22h 03m
Deal found 9/9![Scandinavian Airlines logo]()
$841
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.
Tue 10/67:25 am -
1 stop16h 00m
Fri 10/3012:05 pm -
1 stop15h 10m
Deal found 9/8![Lufthansa logo]()
$842
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.
Wed 11/1112:45 pm -
Nonstop11h 25m
Mon 11/236:00 pm -
Nonstop10h 40m
Deal found 9/5![British Airways logo]()
$843
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 11/412:45 pm -
Nonstop11h 25m
Wed 11/189:18 am -
1 stop13h 17m
Deal found 9/8![British Airways logo]()
$844
Best flights from Heathrow to San DiegoDiscover carefully curated flight deals from Heathrow to San Diego 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 Diego that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 10, 2026.
This Scandinavian Airlines deal was found by Cheapflights users on 9/10. 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.
Wed 10/146:40 am -
2 stops25h 06m
Wed 10/2810:57 am -
3 stops22h 03m
Deal found 9/10![Scandinavian Airlines logo]()
$841
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 11/412:45 pm -
Nonstop11h 25m
Thu 11/194:30 pm -
1 stop13h 05m
Deal found 9/8![British Airways logo]()
$844
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/216:20 am -
2 stops20h 59m
Fri 11/276:15 am -
2 stops17h 35m
Deal found 9/7![Delta logo]()
$923
This Scandinavian 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/166:40 am -
3 stops25h 19m
Thu 11/2611:05 am -
2 stops22h 35m
Deal found 9/9![Scandinavian Airlines logo]()
$844
This British Airways 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/811:35 am -
Nonstop11h 20m
Wed 10/211:12 pm -
1 stop14h 03m
Deal found 9/9![British Airways logo]()
$862
This Scandinavian 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/276:40 am -
2 stops24h 06m
Fri 10/3010:57 am -
3 stops24h 33m
Deal found 9/8![Scandinavian Airlines logo]()
$881
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.
Sat 11/211:50 pm -
1 stop16h 05m
Fri 11/276:00 pm -
Nonstop10h 40m
Deal found 9/6![British Airways logo]()
$907
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.
Thu 10/222:30 pm -
Nonstop11h 20m
Thu 10/2911:17 am -
1 stop13h 58m
Deal found 9/6![British Airways logo]()
$968
This Scandinavian 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/277:05 am -
3 stops23h 37m
Sun 11/18:00 am -
3 stops22h 35m
Deal found 9/7![Scandinavian Airlines logo]()
$1,026
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.
Thu 10/222:30 pm -
Nonstop11h 20m
Fri 10/303:07 pm -
1 stop14h 03m
Deal found 9/5![British Airways logo]()
$1,033
Last-minute flights from Heathrow to San DiegoDiscover last-minute flight deals from Heathrow to San Diego. Data last updated September 10, 2026 and is based on user searches.
Discover last-minute flight deals from Heathrow to San Diego. Data last updated September 10, 2026 and is based on user searches.
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.
Tue 9/152:05 pm -
2 stops29h 42m
Tue 9/227:00 am -
2 stops17h 35m
Deal found 9/8![Air Canada logo]()
$835
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 9/199:30 am -
2 stops17h 00m
Mon 10/57:00 am -
2 stops15h 35m
Deal found 9/9![Multiple Airlines logo]()
$840
This Air Canada 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/198:30 am -
2 stops20h 06m
Mon 9/217:00 am -
2 stops20h 50m
Deal found 9/5![Air Canada logo]()
$843
This TravelUp 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 TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/239:45 am -
1 stop15h 44m
Sat 10/107:40 pm -
Nonstop10h 40m
Deal found 9/9![British Airways logo]()
$838
This Expedia 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/38:55 am -
1 stop19h 06m
Wed 10/77:40 pm -
Nonstop10h 40m
Deal found 9/5![Iberia logo]()
$834
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.
Tue 10/67:25 am -
1 stop16h 00m
Fri 10/3012:05 pm -
1 stop15h 10m
Deal found 9/8![Lufthansa logo]()
$842
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 10/77:25 am -
1 stop16h 00m
Thu 10/2912:39 pm -
1 stop14h 01m
Deal found 9/8![Lufthansa logo]()
$833
This TravelUp 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 TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/132:30 pm -
Nonstop11h 20m
Wed 10/2110:06 am -
1 stop13h 49m
Deal found 9/7![British Airways logo]()
$844
This Scandinavian 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/146:40 am -
2 stops25h 06m
Wed 10/2810:57 am -
3 stops22h 03m
Deal found 9/9![Scandinavian Airlines logo]()
$841
This Travcart 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 Travcart is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/204:25 pm -
1 stop33h 28m
Wed 10/287:00 pm -
Nonstop10h 40m
Deal found 9/6![Finnair logo]()
$836
This Travcart 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 Travcart is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/209:45 am -
1 stop21h 34m
Wed 10/288:00 am -
1 stop15h 50m
Deal found 9/5![Multiple Airlines logo]()
$837
This TravelUp 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 TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/218:40 am -
1 stop33h 29m
Mon 11/99:40 pm -
1 stop16h 00m
Deal found 9/8![JetBlue logo]()
$839
One-way flights from Heathrow to San DiegoSearch for one-way flight options from Heathrow to San Diego. 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 Diego. 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 9/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/159:55 am -
3 stops40h 43m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Multiple Airlines logo]()
$544
This Trip.com 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/410:05 am -
1 stop16h 33m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/8![Multiple Airlines logo]()
$545
This 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/212:45 pm -
Nonstop11h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![British Airways logo]()
$547
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.
Mon 12/77:40 am -
1 stop16h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Lufthansa logo]()
$549
This Booking.com 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/148:45 am -
1 stop15h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Lufthansa logo]()
$550
This JetBlue 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/318:05 am -
1 stop19h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/8![JetBlue logo]()
$551
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/82:50 pm -
2 stops27h 21m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Multiple Airlines logo]()
$552
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/611:10 am -
2 stops39h 28m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Multiple Airlines logo]()
$553
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/511:10 am -
2 stops39h 28m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Multiple Airlines logo]()
$556
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/87:15 pm -
1 stop28h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Lufthansa logo]()
$557
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/56:30 am -
2 stops18h 57m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Multiple Airlines logo]()
$558
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/911:55 am -
1 stop29h 19m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![JetBlue logo]()
$563
Find flight deals from Heathrow to San Diego
Discover tips and strategies to find the most affordable flight options for your journey from Heathrow (LHR) to San Diego (SAN). 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 | $833 (Lufthansa) |
One-way from | $544 (Kiwi.com) |
Popular in | August |
Cheapest in | February |
Average price | $861 |
Good round-trip deal | $946 or less |
Good one-way deal | $662 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Heathrow to San Diego 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 Diego that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
LondonSan Diego
LHR London Heathrow - SAN San Diego
LHRSAN
London Heathrow
Fri 11/6
9:20 am-7:14 pm
1 stop17h 54m
San Diego
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$551
LondonSan Diego
LHR London Heathrow - SAN San Diego
LHRSAN
London Heathrow
Tue 11/3
8:55 am-11:46 pm
2 stops22h 51m
San Diego
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$592
Quickest round-trip
LondonSan Diego
LHR London Heathrow - SAN San Diego
LHRSAN
London Heathrow
Tue 11/3
12:45 pm-4:10 pm
Nonstop11h 25m
San Diego
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$597
LondonSan Diego
LHR London Heathrow - SAN San Diego
LHRSAN
London Heathrow
Mon 12/7
12:45 pm-4:10 pm
Nonstop11h 25m
San Diego
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$597
LondonSan Diego
LHR London Heathrow - SAN San Diego
LHRSAN
London Heathrow
Wed 12/2
12:45 pm-4:10 pm
Nonstop11h 25m
San Diego
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$597
LondonSan Diego
LHR London Heathrow - SAN San Diego
LHRSAN
London Heathrow
Sat 12/5
8:00 am-12:29 am
3 stops24h 29m
San Diego
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$644
LondonSan Diego
LHR London Heathrow - SAN San Diego
LHRSAN
London Heathrow
Thu 12/3
12:45 pm-4:10 pm
Nonstop11h 25m
San Diego
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$654
LondonSan Diego
LHR London Heathrow - SAN San Diego
LHRSAN
London Heathrow
Sun 11/1
10:10 am-10:02 pm
2 stops19h 52m
San Diego
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$660
LondonSan Diego
LHR London Heathrow - SAN San Diego
LHRSAN
London Heathrow
Fri 10/23
7:25 am-3:25 pm
1 stop16h 00m
San Diego
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$695
LondonSan Diego
LHR London Heathrow - SAN San Diego
LHRSAN
London Heathrow
Fri 11/6
12:45 pm-4:10 pm
Nonstop11h 25m
San Diego
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$725
Showing 1-10 of 22 resultsSorted by cheapest first
Compare providers for flights from Heathrow to San Diego
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 Diego in September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on London Heathrow Airport-San Diego 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 Diego flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from London Heathrow Airport-San Diego flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on London Heathrow Airport-San Diego 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 Diego 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 Diego
Have a flexible travel schedule? Discover the best time to fly to San Diego from Heathrow with our price prediction graph.
LHR-SAN
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 Diego
Prices
Airlines
Delays
How far ahead should I book a flight from London Heathrow Airport to San Diego?
Booking 80 days in advance of your planned departure date is, on average, the best time to get cheap flights from London Heathrow Airport to San Diego. 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 London Heathrow Airport to San Diego?
Currently, February is the cheapest month in which you can book a flight from London Heathrow Airport to San Diego (average of $677). Flying from London Heathrow Airport to San Diego in August is currently the most expensive (average of $1,341). 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 SAN?
Find hourly flight availability from Heathrow to San Diego. 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 Diego as you normally would.
How often are flights from London to San Diego delayed?
About 16% of weekly flights between London and San Diego 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 Diego flights?
Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the early afternoon tend to experience delays more often.
What day of the week experiences the fewest flight delays on this route?
Tuesday tends to have the lowest number of delays on this route, whereas Thursday 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 Diego flights?
Over the last year, British Airways have had the lowest number of delays on this route, with just 16% of flights being delayed.
The best insider tips for London Heathrow Airport to San Diego 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 Diego trip
Our travel experts
Reviews of airlines servicing San Diego
Get insights into the airlines that provide service to San Diego. 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 Diego. Reviews last updated September 10, 2026.
See what other customers who have flown with United Airlines,American Airlines, andBritish Airways from London Heathrow Airport to San Diego have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Food
6.6
Comfort
7.3
Crew
8.1
Overall
7.4
Entertainment
7.1
Boarding
7.7
Reviews
1 / 20
10.0
ExcellentTim,Sep 2025
LHR - IAD
Food
6.6
Comfort
7.3
Crew
8.1
Overall
7.4
Entertainment
7.1
Boarding
7.7
Reviews
1 / 20
10.0
ExcellentTim,Sep 2025
LHR - IAD
Food
6.6
Comfort
7.3
Crew
8.1
Overall
7.4
Entertainment
7.1
Boarding
7.7
Reviews
1 / 20
10.0
ExcellentTim,Sep 2025
LHR - IAD
Food
6.6
Comfort
7.3
Crew
8.1
Overall
7.4
Entertainment
7.1
Boarding
7.7
Reviews
1 / 20
10.0
ExcellentTim,Sep 2025
LHR - IAD
Related info for your journey
Find useful and relevant information for your journey from Heathrow to San Diego. 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 Diego?
Book flights to San Diego if you plan to visit one of these locationsEl Cajon
National City
Chula Vista
Coronado
Poway
San Ysidro
La Mesa
Santee
Julian
Lemon Grove
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Heathrow and San Diego flights
Browse other Heathrow and San Diego flight options. Last updated on September 10, 2026.
Other flights from Heathrow
Browse through other flights departing from Heathrow. Flights are based on user searches made on Cheapflights and were last updated on September 10, 2026.
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Top 3 airlines flying from Heathrow to San Diego
Discover the top 3 airlines that operate flights from Heathrow to San Diego. 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$605 | Average$813 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$658 | Average$1,008 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$697 | Average$1,312 | FlexibilityNo cancel fee | On-time71% |