$463+ Cheap flights from London (LON) to California
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/28. Fares are subject to change and may not be available on all flights or dates of travel.
LON — LAX
Jul 11 — Jul 181
Round-trip
1 adult, Economy
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Cheapest flights from London to CaliforniaExplore the most affordable flight options available from London to California. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 11, 2026.
Explore the most affordable flight options available from London to California. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 11, 2026.
This United Airlines deal was found by Cheapflights users on 6/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/46:55 am
LHR
- ONT
2 stops21h 58m
United Airlines
Tue 9/81:56 pm
ONT
- LHR
1 stop13h 14m
United Airlines
Deal found 6/6![United Airlines logo]()
$558
This United Airlines deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/87:30 am
LHR
- ONT
2 stops22h 25m
United Airlines
Mon 7/136:00 am
ONT
- LHR
1 stop17h 25m
United Airlines
Deal found 6/8![United Airlines logo]()
$559
This United Airlines deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/139:30 am
LHR
- ONT
2 stops21h 36m
United Airlines
Tue 11/176:02 am
ONT
- LHR
2 stops16h 18m
United Airlines
Deal found 6/9![United Airlines logo]()
$561
This United Airlines deal was found by Cheapflights users on 6/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/209:30 am
LHR
- ONT
2 stops21h 36m
United Airlines
Sat 11/285:00 am
ONT
- LHR
1 stop20h 40m
United Airlines
Deal found 6/6![United Airlines logo]()
$562
This ChecknFly deal was found by Cheapflights users on 6/9. 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 ChecknFly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/19:30 am
LHR
- ONT
2 stops21h 21m
Lufthansa
Thu 7/301:18 pm
ONT
- LHR
1 stop12h 22m
Lufthansa
Deal found 6/9![Lufthansa logo]()
$578
This ChecknFly deal was found by Cheapflights users on 6/10. 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 ChecknFly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/910:25 am
LHR
- ONT
2 stops20h 26m
Lufthansa
Mon 7/206:00 am
ONT
- LHR
1 stop21h 10m
Lufthansa
Deal found 6/10![Lufthansa logo]()
$579
This ChecknFly deal was found by Cheapflights users on 6/6. 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 ChecknFly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/271:00 pm
LHR
- ONT
1 stop17h 50m
Lufthansa
Tue 6/301:50 pm
ONT
- LHR
1 stop16h 20m
Lufthansa
Deal found 6/6![Lufthansa logo]()
$580
This United Airlines deal was found by Cheapflights users on 6/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/142:50 pm
LHR
- ONT
1 stop13h 56m
United Airlines
Sun 6/281:18 pm
ONT
- LHR
1 stop12h 22m
United Airlines
Deal found 6/7![United Airlines logo]()
$589
This United Airlines deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/162:50 pm
LHR
- ONT
1 stop13h 56m
United Airlines
Tue 7/284:20 pm
ONT
- LHR
1 stop13h 50m
United Airlines
Deal found 6/9![United Airlines logo]()
$590
This United Airlines deal was found by Cheapflights users on 6/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/304:15 pm
LHR
- ONT
1 stop14h 22m
United Airlines
Thu 8/61:18 pm
ONT
- LHR
1 stop12h 22m
United Airlines
Deal found 6/10![United Airlines logo]()
$592
This United Airlines deal was found by Cheapflights users on 6/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/271:00 pm
LHR
- ONT
1 stop17h 50m
United Airlines
Tue 6/305:00 am
ONT
- LHR
2 stops19h 20m
United Airlines
Deal found 6/6![United Airlines logo]()
$593
This oojo deal was found by Cheapflights users on 6/9. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/67:15 pm
LCY
- LAX
1 stop29h 15m
SWISS
Sat 10/177:35 pm
LAX
- LCY
1 stop29h 05m
SWISS
Deal found 6/9![SWISS logo]()
$660
Best flights from London to CaliforniaDiscover carefully curated flight deals from London to California that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 11, 2026.
Discover carefully curated flight deals from London to California that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 11, 2026.
This United Airlines deal was found by Cheapflights users on 6/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/137:30 am
LHR
- ONT
2 stops20h 50m
United Airlines
Tue 11/176:00 am
ONT
- LHR
1 stop17h 25m
United Airlines
Deal found 6/10![United Airlines logo]()
$561
This British Airways deal was found by Cheapflights users on 6/9. 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.
Fri 11/1310:15 am
LHR
- ONT
1 stop16h 07m
British Airways
Tue 11/177:00 am
ONT
- LHR
1 stop17h 15m
British Airways
Deal found 6/9![British Airways logo]()
$655
This KLM deal was found by Cheapflights users on 6/9. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/146:15 pm
LHR
- LAX
Nonstop11h 10m
KLM
Mon 8/243:50 pm
LAX
- LHR
Nonstop10h 25m
KLM
Deal found 6/9![KLM logo]()
$665
This Delta deal was found by Cheapflights users on 6/7. 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.
Thu 8/1311:45 am
LHR
- LAX
1 stop18h 36m
Delta
Sat 8/2211:35 am
LAX
- LHR
1 stop14h 25m
Delta
Deal found 6/7![Delta logo]()
$668
This TAP AIR PORTUGAL deal was found by Cheapflights users on 6/7. 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 TAP AIR PORTUGAL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/119:15 pm
LGW
- LAX
2 stops25h 25m
TAP AIR PORTUGAL
Sun 9/274:40 pm
LAX
- LGW
1 stop33h 05m
TAP AIR PORTUGAL
Deal found 6/7![TAP AIR PORTUGAL logo]()
$675
This Virgin Atlantic deal was found by Cheapflights users on 6/7. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/912:25 pm
LHR
- LAX
1 stop16h 26m
Virgin Atlantic
Thu 7/168:30 pm
LAX
- LHR
1 stop13h 00m
Virgin Atlantic
Deal found 6/7![Virgin Atlantic logo]()
$676
This Finnair deal was found by Cheapflights users on 6/10. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/1410:20 am
LHR
- LAX
1 stop14h 50m
Finnair
Fri 10/1612:15 pm
LAX
- LHR
1 stop34h 10m
Finnair
Deal found 6/10![Finnair logo]()
$695
This Scandinavian Airlines deal was found by Cheapflights users on 6/9. 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.
Tue 9/227:50 pm
LHR
- SFO
2 stops26h 50m
Scandinavian Airlines
Tue 9/294:45 pm
SFO
- LHR
2 stops18h 05m
Scandinavian Airlines
Deal found 6/9![Scandinavian Airlines logo]()
$732
This Lufthansa deal was found by Cheapflights users on 6/11. 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 7/810:35 am
LHR
- SFO
Nonstop11h 00m
Lufthansa
Fri 8/72:40 pm
SFO
- LHR
1 stop14h 00m
Lufthansa
Deal found 6/11![Lufthansa logo]()
$752
This SWISS deal was found by Cheapflights users on 6/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/287:00 am
LHR
- SFO
2 stops17h 15m
SWISS
Sat 9/127:35 pm
SFO
- LHR
1 stop14h 15m
SWISS
Deal found 6/7![SWISS logo]()
$774
This Alaska Airlines deal was found by Cheapflights users on 6/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/85:00 pm
LHR
- ONT
1 stop26h 16m
Alaska Airlines
Sat 9/193:14 pm
ONT
- LHR
1 stop15h 51m
Alaska Airlines
Deal found 6/7![Alaska Airlines logo]()
$784
This Air Transat deal was found by Cheapflights users on 6/8. 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 Transat is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/259:40 am
LGW
- SFO
1 stop34h 40m
Air Transat
Tue 7/141:20 pm
SFO
- LGW
1 stop34h 35m
Air Transat
Deal found 6/8![Air Transat logo]()
$804
This Aer Lingus deal was found by Cheapflights users on 6/7. 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 Aer Lingus is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/26:45 am
LCY
- LAX
1 stop19h 40m
Aer Lingus
Mon 9/148:10 pm
LAX
- LCY
1 stop16h 35m
Aer Lingus
Deal found 6/7![Aer Lingus logo]()
$992
This Condor deal was found by Cheapflights users on 6/6. 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 Condor is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/77:40 pm
LGW
- LAX
2 stops30h 44m
Condor
Mon 10/124:45 pm
LAX
- LGW
1 stop18h 05m
Condor
Deal found 6/6![Condor logo]()
$995
This Turkish Airlines deal was found by Cheapflights users on 6/10. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/210:55 am
STN
- LAX
1 stop38h 40m
Turkish Airlines
Fri 11/1312:45 pm
LAX
- STN
1 stop19h 35m
Turkish Airlines
Deal found 6/10![Turkish Airlines logo]()
$1,006
This Icelandair deal was found by Cheapflights users on 6/9. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/283:40 pm
LGW
- LAX
2 stops32h 42m
Icelandair
Fri 9/2512:20 pm
LAX
- LGW
2 stops18h 20m
Icelandair
Deal found 6/9![Icelandair logo]()
$1,105
This United Airlines deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/71:40 pm
LHR
- ONT
1 stop16h 19m
United Airlines
Thu 9/179:01 am
ONT
- LHR
1 stop14h 24m
United Airlines
Deal found 6/9![United Airlines logo]()
$590
This United Airlines deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/171:40 pm
LHR
- ONT
1 stop16h 19m
United Airlines
Sat 10/311:00 pm
ONT
- LHR
1 stop13h 40m
United Airlines
Deal found 6/8![United Airlines logo]()
$590
This Virgin Atlantic deal was found by Cheapflights users on 6/9. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/159:20 am
LCY
- LAX
2 stops20h 02m
Virgin Atlantic
Fri 10/2311:00 am
LAX
- LCY
2 stops16h 40m
Virgin Atlantic
Deal found 6/9![Virgin Atlantic logo]()
$681
This Delta deal was found by Cheapflights users on 6/7. 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.
Thu 8/65:45 pm
LHR
- LAX
1 stop14h 47m
Delta
Mon 8/2411:15 pm
LAX
- LHR
Nonstop10h 20m
Delta
Deal found 6/7![Delta logo]()
$689
This British Airways deal was found by Cheapflights users on 6/11. 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 7/78:40 pm
LGW
- LAX
2 stops36h 14m
British Airways
Thu 8/65:50 pm
LAX
- LGW
1 stop18h 10m
British Airways
Deal found 6/11![British Airways logo]()
$691
This United Airlines deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/11:00 pm
LHR
- ONT
1 stop17h 37m
United Airlines
Wed 7/81:18 pm
ONT
- LHR
1 stop12h 22m
United Airlines
Deal found 6/8![United Airlines logo]()
$590
This Scandinavian Airlines deal was found by Cheapflights users on 6/10. 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 9/239:05 pm
LHR
- SFO
2 stops25h 35m
Scandinavian Airlines
Sun 9/274:45 pm
SFO
- LHR
2 stops18h 05m
Scandinavian Airlines
Deal found 6/10![Scandinavian Airlines logo]()
$736
This TAP AIR PORTUGAL deal was found by Cheapflights users on 6/9. 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 TAP AIR PORTUGAL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/99:15 pm
LGW
- SFO
2 stops25h 15m
TAP AIR PORTUGAL
Tue 9/157:20 pm
SFO
- LGW
2 stops30h 25m
TAP AIR PORTUGAL
Deal found 6/9![TAP AIR PORTUGAL logo]()
$744
This Virgin Atlantic deal was found by Cheapflights users on 6/6. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/78:15 pm
LCY
- LAX
1 stop23h 35m
Virgin Atlantic
Tue 10/131:30 pm
LAX
- LCY
2 stops19h 10m
Virgin Atlantic
Deal found 6/6![Virgin Atlantic logo]()
$682
This British Airways deal was found by Cheapflights users on 6/8. 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 6/249:35 am
LCY
- LAX
2 stops33h 47m
British Airways
Sun 7/2611:48 pm
LAX
- LCY
2 stops31h 27m
British Airways
Deal found 6/8![British Airways logo]()
$699
This Delta deal was found by Cheapflights users on 6/6. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/2310:55 am
LHR
- LAX
1 stop18h 34m
Delta
Fri 8/146:00 am
LAX
- LHR
1 stop17h 10m
Delta
Deal found 6/6![Delta logo]()
$703
This United Airlines deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/294:15 pm
LHR
- ONT
1 stop14h 22m
United Airlines
Tue 8/41:18 pm
ONT
- LHR
1 stop12h 22m
United Airlines
Deal found 6/8![United Airlines logo]()
$590
This Scandinavian Airlines deal was found by Cheapflights users on 6/11. 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 9/97:50 pm
LHR
- SFO
2 stops26h 50m
Scandinavian Airlines
Tue 9/154:45 pm
SFO
- LHR
2 stops18h 05m
Scandinavian Airlines
Deal found 6/11![Scandinavian Airlines logo]()
$747
This SWISS deal was found by Cheapflights users on 6/6. 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.
Fri 8/219:25 am
LGW
- LAX
1 stop15h 05m
SWISS
Fri 8/2811:15 am
LAX
- LGW
2 stops22h 35m
SWISS
Deal found 6/6![SWISS logo]()
$826
Last-minute flights from London to CaliforniaDiscover last-minute flight deals from London to California. Data last updated June 11, 2026 and is based on user searches.
Discover last-minute flight deals from London to California. Data last updated June 11, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 6/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/142:50 pm
LHR
- ONT
1 stop13h 56m
United Airlines
Sun 6/281:18 pm
ONT
- LHR
1 stop12h 22m
United Airlines
Deal found 6/7![United Airlines logo]()
$589
This United Airlines deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/164:15 pm
LHR
- ONT
1 stop14h 22m
United Airlines
Sat 7/181:18 pm
ONT
- LHR
1 stop15h 07m
United Airlines
Deal found 6/9![United Airlines logo]()
$590
This Flighttix deal was found by Cheapflights users on 6/11. 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 Flighttix is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/186:30 am
LHR
- LAX
1 stop16h 15m
Virgin Atlantic
Fri 7/33:25 pm
LAX
- LHR
1 stop13h 40m
Virgin Atlantic
Deal found 6/11![Virgin Atlantic logo]()
$660
This ChecknFly deal was found by Cheapflights users on 6/6. 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 ChecknFly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/271:00 pm
LHR
- ONT
1 stop17h 50m
Lufthansa
Tue 6/301:50 pm
ONT
- LHR
1 stop16h 20m
Lufthansa
Deal found 6/6![Lufthansa logo]()
$580
This United Airlines deal was found by Cheapflights users on 6/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/271:00 pm
LHR
- ONT
1 stop17h 50m
United Airlines
Sat 7/41:50 pm
ONT
- LHR
1 stop13h 20m
United Airlines
Deal found 6/6![United Airlines logo]()
$593
This United Airlines deal was found by Cheapflights users on 6/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/304:15 pm
LHR
- ONT
1 stop14h 22m
United Airlines
Tue 7/71:18 pm
ONT
- LHR
1 stop15h 07m
United Airlines
Deal found 6/10![United Airlines logo]()
$592
This ChecknFly deal was found by Cheapflights users on 6/9. 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 ChecknFly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/19:30 am
LHR
- ONT
2 stops21h 21m
Lufthansa
Thu 7/301:18 pm
ONT
- LHR
1 stop12h 22m
Lufthansa
Deal found 6/9![Lufthansa logo]()
$578
This Air Canada deal was found by Cheapflights users on 6/8. 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.
Wed 7/19:30 am
LHR
- ONT
2 stops35h 17m
Air Canada
Wed 7/295:00 am
ONT
- LHR
2 stops21h 00m
Air Canada
Deal found 6/8![Air Canada logo]()
$597
This Air Canada deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/19:30 am
LHR
- ONT
2 stops21h 21m
Multiple Airlines
Thu 7/305:00 am
ONT
- LHR
2 stops17h 35m
Multiple Airlines
Deal found 6/9![Multiple Airlines logo]()
$602
This United Airlines deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/89:30 am
LHR
- ONT
2 stops20h 25m
United Airlines
Mon 7/135:00 am
ONT
- LHR
2 stops20h 20m
United Airlines
Deal found 6/8![United Airlines logo]()
$559
This ChecknFly deal was found by Cheapflights users on 6/10. 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 ChecknFly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/910:25 am
LHR
- ONT
2 stops20h 26m
Lufthansa
Mon 7/206:00 am
ONT
- LHR
1 stop21h 10m
Lufthansa
Deal found 6/10![Lufthansa logo]()
$579
This United Airlines deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/99:30 am
LHR
- ONT
2 stops20h 25m
United Airlines
Thu 7/166:00 am
ONT
- LHR
2 stops16h 35m
United Airlines
Deal found 6/9![United Airlines logo]()
$599
One-way flights from London to CaliforniaSearch for one-way flight options from London to California. Find affordable one-way fares based on user searches. Data last updated June 11, 2026.
Search for one-way flight options from London to California. Find affordable one-way fares based on user searches. Data last updated June 11, 2026.
This TravelUp deal was found by Cheapflights users on 6/7. 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 8/2811:00 am
LHR
- ONT
1 stop15h 15m
British Airways
Deal found 6/7![British Airways logo]()
$463
This TravelUp deal was found by Cheapflights users on 6/8. 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.
Sat 11/72:25 pm
LHR
- ONT
1 stop15h 34m
British Airways
Deal found 6/8![British Airways logo]()
$464
This TravelUp deal was found by Cheapflights users on 6/6. 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 TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/2611:00 am
LHR
- ONT
1 stop15h 15m
British Airways
Deal found 6/6![British Airways logo]()
$466
This TravelUp deal was found by Cheapflights users on 6/10. 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 TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/3111:00 am
LHR
- ONT
1 stop15h 15m
British Airways
Deal found 6/10![British Airways logo]()
$468
This Expedia deal was found by Cheapflights users on 6/10. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/141:40 pm
LHR
- ONT
1 stop16h 19m
Lufthansa
Deal found 6/10![Lufthansa logo]()
$476
This Cheapflightsfares deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/2111:00 am
LHR
- ONT
1 stop15h 15m
British Airways
Deal found 6/9![British Airways logo]()
$480
This Bravofly deal was found by Cheapflights users on 6/7. 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 Bravofly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/2411:00 am
LHR
- ONT
1 stop15h 15m
British Airways
Deal found 6/7![British Airways logo]()
$482
This Cheapflightsfares deal was found by Cheapflights users on 6/8. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2112:30 pm
LHR
- ONT
1 stop15h 34m
British Airways
Deal found 6/8![British Airways logo]()
$484
This Cheapflightsfares deal was found by Cheapflights users on 6/10. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/304:10 pm
LHR
- ONT
1 stop13h 45m
British Airways
Deal found 6/10![British Airways logo]()
$486
This Cheapflightsfares deal was found by Cheapflights users on 6/8. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/14:10 pm
LHR
- ONT
1 stop14h 33m
British Airways
Deal found 6/8![British Airways logo]()
$489
This lol.travel deal was found by Cheapflights users on 6/6. 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.
Thu 9/245:00 pm
LHR
- ONT
1 stop14h 24m
Alaska Airlines
Deal found 6/6![Alaska Airlines logo]()
$490
This TravelUp deal was found by Cheapflights users on 6/8. 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.
Mon 9/71:40 pm
LHR
- ONT
1 stop16h 19m
Lufthansa
Deal found 6/8![Lufthansa logo]()
$491
Find flight deals from London to California
Keep the following information in mind while searching for London to California flight deals. Data was last updated June 11, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $558 (United Airlines) |
One-way from | $463 (TravelUp) |
Popular in | December |
Cheapest in | February |
Average price | $723 |
Good round-trip deal | $715 or less |
Good one-way deal | $393 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from London to California that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 11, 2026.
Use the filters below to find and compare flights from London to California that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
LondonOntario
LHR - ONT
LHRONT
London Heathrow
Fri 11/13
7:30 am-8:20 pm
2 stops20h 50m
Ontario
Tue 11/17
6:00 am-7:25 am
1 stop17h 25m
$561
LondonOntario
LHR - ONT
LHRONT
London Heathrow
Mon 9/7
1:40 pm-9:59 pm
1 stop16h 19m
Ontario
Thu 9/17
9:01 am-7:25 am
1 stop14h 24m
$590
LondonOntario
LHR - ONT
LHRONT
London Heathrow
Sat 10/17
1:40 pm-9:59 pm
1 stop16h 19m
Ontario
Sat 10/31
1:00 pm-9:40 am
1 stop13h 40m
$590
LondonOntario
LHR - ONT
LHRONT
London Heathrow
Wed 7/1
1:00 pm-10:37 pm
1 stop17h 37m
Ontario
Wed 7/8
1:18 pm-9:40 am
1 stop12h 22m
$590
LondonOntario
LHR - ONT
LHRONT
London Heathrow
Mon 6/29
4:15 pm-10:37 pm
1 stop14h 22m
Ontario
Tue 8/4
1:18 pm-9:40 am
1 stop12h 22m
$590
LondonOntario
LHR - ONT
LHRONT
London Heathrow
Fri 11/13
10:15 am-6:22 pm
1 stop16h 07m
Ontario
Tue 11/17
7:00 am-8:15 am
1 stop17h 15m
$655
Quickest round-trip
LondonLos Angeles
LHR - LAX
LHRLAX
London Heathrow
Fri 8/14
6:15 pm-9:25 pm
Nonstop11h 10m
Los Angeles
Mon 8/24
3:50 pm-10:15 am
Nonstop10h 25m
$665
LondonLos Angeles
LHR - LAX
LHRLAX
London Heathrow
Thu 8/13
11:45 am-10:21 pm
1 stop18h 36m
Los Angeles
Sat 8/22
11:35 am-10:00 am
1 stop14h 25m
$668
LondonLos Angeles
LGW - LAX
LGWLAX
London Gatwick
Fri 9/11
9:15 pm-2:40 pm
2 stops25h 25m
Los Angeles
Sun 9/27
4:40 pm-9:45 am
1 stop33h 05m
$675
LondonLos Angeles
LHR - LAX
LHRLAX
London Heathrow
Thu 7/9
12:25 pm-8:51 pm
1 stop16h 26m
Los Angeles
Thu 7/16
8:30 pm-5:30 pm
1 stop13h 00m
$676
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from London to California
Have a flexible travel schedule? Discover the best time to fly to California from London with our price prediction graph.
LHR-ONT
LHR-LAS
STN-LAX
LCY-SFO
STN-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 to California
LON-USCA
LHR-ONT
LHR-LAS
STN-LAX
LCY-SFO
What is the cheapest month to book a flight from London to California?
Currently, September is the cheapest month in which you can book a flight from London to California (average of $574). Flying from London to California in December is currently the most expensive (average of $799). 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 LON to CA?
Find hourly flight availability from London to California. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 11, 2026.
When flying from London to California, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
Weekly flight availability from London to California
Explore weekly flight availability from London to California. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated June 11, 2026.
The most flights from LON to USCA are scheduled on a Monday (53 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (53 on average).
How much does it cost to fly round-trip from London to California?
How far ahead should I book a flight from London to California?
The price you pay for your flight from London to California may vary depending on when you book. For the best chance of a lower fare, look to book 80 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
Reviews of airlines servicing California
Get insights into the airlines that provide service to California. 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 California. Reviews last updated June 11, 2026.
Read through reviews of airlines operating flights from London to California, such as KLM,Virgin Atlantic, andUnited Airlines. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Crew
8.4
Boarding
7.8
Comfort
7.7
Entertainment
7.2
Overall
7.8
Food
7.3
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Crew
8.4
Boarding
7.8
Comfort
7.7
Entertainment
7.2
Overall
7.8
Food
7.3
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Crew
8.4
Boarding
7.8
Comfort
7.7
Entertainment
7.2
Overall
7.8
Food
7.3
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Crew
8.4
Boarding
7.8
Comfort
7.7
Entertainment
7.2
Overall
7.8
Food
7.3
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Crew
8.4
Boarding
7.8
Comfort
7.7
Entertainment
7.2
Overall
7.8
Food
7.3
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Crew
8.4
Boarding
7.8
Comfort
7.7
Entertainment
7.2
Overall
7.8
Food
7.3
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Related info for your journey
Find useful and relevant information for your journey from London to California. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
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Alternative routes for London to California
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to California by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from London to California by cabin class
Find flights from London to California, based on your preferred cabin class, be it economy, premium economy, business, or first class.
London and California flights
Browse other London and California flight options. Last updated on June 11, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
London to California flights
Consider these flights traveling from London to California.
Top 10 airlines flying from London to California
Discover the top 10 airlines that operate flights from London to California. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 11, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$396 | Average$824 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$415 | Average$559 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$416 | Average$669 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$449 | Average$494 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$468 | Average$644 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$487 | Average$782 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$494 | Average$793 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$494 | Average$758 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$500 | Average$655 | FlexibilityNo cancel fee | On-time78% | |
| Cheapest$513 | Average$776 | FlexibilityNo cancel fee | On-time70% |