$443+ Cheap flights from London (LON) to California
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 7/2. Fares are subject to change and may not be available on all flights or dates of travel.
LON — LAX
Jul 16 — Jul 231
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 16, 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 16, 2026.
This deal was found by Cheapflights users on 6/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/21:40 pm
LHR
- ONT
1 stop16h 15m
United Airlines
Fri 7/245:45 am
ONT
- LHR
1 stop18h 10m
United Airlines
Deal found 6/15![United Airlines logo]()
$443
This United Airlines deal was found by Cheapflights users on 6/12. 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 9/76:55 am
LHR
- ONT
2 stops19h 16m
United Airlines
Mon 9/285:00 am
ONT
- LHR
1 stop20h 40m
United Airlines
Deal found 6/12![United Airlines logo]()
$560
This United Airlines deal was found by Cheapflights users on 6/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/27:25 am
LHR
- ONT
2 stops18h 51m
United Airlines
Wed 9/237:00 am
ONT
- LHR
2 stops19h 40m
United Airlines
Deal found 6/13![United Airlines logo]()
$561
This United Airlines deal was found by Cheapflights users on 6/13. 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 6/13![United Airlines logo]()
$562
This Air Canada deal was found by Cheapflights users on 6/16. 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 9/92:05 pm
LHR
- ONT
2 stops38h 48m
Air Canada
Sun 9/135:00 am
ONT
- LHR
2 stops17h 30m
Air Canada
Deal found 6/16![Air Canada logo]()
$586
This The Travel House deal was found by Cheapflights users on 6/13. 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 The Travel House is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/232:50 pm
LHR
- ONT
1 stop13h 56m
Lufthansa
Tue 7/141:18 pm
ONT
- LHR
1 stop15h 07m
Lufthansa
Deal found 6/13![Lufthansa logo]()
$589
This The Travel House deal was found by Cheapflights users on 6/16. 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 The Travel House is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/210:00 am
LHR
- ONT
1 stop19h 55m
Lufthansa
Fri 7/241:18 pm
ONT
- LHR
1 stop12h 22m
Lufthansa
Deal found 6/16![Lufthansa logo]()
$590
This United Airlines deal was found by Cheapflights users on 6/15. 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 6/222:50 pm
LHR
- ONT
1 stop13h 56m
United Airlines
Sun 7/51:18 pm
ONT
- LHR
1 stop12h 22m
United Airlines
Deal found 6/15![United Airlines logo]()
$591
This United Airlines deal was found by Cheapflights users on 6/12. 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 6/192:50 pm
LHR
- ONT
1 stop13h 56m
United Airlines
Tue 7/71:18 pm
ONT
- LHR
1 stop12h 22m
United Airlines
Deal found 6/12![United Airlines logo]()
$592
This United Airlines deal was found by Cheapflights users on 6/13. 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 10/232:50 pm
LHR
- ONT
1 stop14h 08m
United Airlines
Thu 11/55:00 am
ONT
- LHR
2 stops20h 10m
United Airlines
Deal found 6/13![United Airlines logo]()
$593
This Kiwi.com deal was found by Cheapflights users on 6/16. 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 8/221:05 pm
LHR
- LAX
Nonstop11h 05m
Lufthansa
Mon 8/318:15 am
LAX
- LHR
1 stop16h 15m
Lufthansa
Deal found 6/16![Lufthansa logo]()
$641
This Cheapflightsfares deal was found by Cheapflights users on 6/16. 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.
Tue 8/259:15 am
LCY
- LAX
1 stop15h 15m
SWISS
Mon 9/77:35 pm
LAX
- LCY
1 stop13h 55m
SWISS
Deal found 6/16![SWISS logo]()
$642
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 16, 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 16, 2026.
This United Airlines deal was found by Cheapflights users on 6/12. 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 7/24:40 pm
LHR
- ONT
2 stops38h 11m
United Airlines
Wed 7/86:39 pm
ONT
- LHR
1 stop28h 46m
United Airlines
Deal found 6/12![United Airlines logo]()
$592
This LEVEL deal was found by Cheapflights users on 6/13. 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 LEVEL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/38:10 am
LGW
- LAX
1 stop18h 50m
LEVEL
Sat 10/108:55 pm
LAX
- LGW
1 stop29h 20m
LEVEL
Deal found 6/13![LEVEL logo]()
$676
This Virgin Atlantic deal was found by Cheapflights users on 6/13. 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.
Sat 10/310:25 am
LGW
- LAX
2 stops21h 17m
Virgin Atlantic
Sat 10/106:25 pm
LAX
- LGW
1 stop13h 35m
Virgin Atlantic
Deal found 6/13![Virgin Atlantic logo]()
$693
This Finnair deal was found by Cheapflights users on 6/15. 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 8/268:10 pm
LHR
- SFO
2 stops36h 49m
Finnair
Tue 9/88:45 am
SFO
- LHR
1 stop16h 15m
Finnair
Deal found 6/15![Finnair logo]()
$711
This SWISS 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/288:05 pm
LHR
- SFO
1 stop28h 10m
SWISS
Sun 10/47:35 pm
SFO
- LHR
2 stops17h 55m
SWISS
Deal found 6/11![SWISS logo]()
$712
This Delta deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/176:30 am
LHR
- SFO
2 stops17h 20m
Delta
Tue 9/111:30 am
SFO
- LHR
1 stop15h 50m
Delta
Deal found 6/12![Delta logo]()
$716
This British Airways deal was found by Cheapflights users on 6/15. 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 9/311:30 am
LGW
- LAX
2 stops40h 07m
British Airways
Mon 9/75:50 pm
LAX
- LGW
1 stop18h 10m
British Airways
Deal found 6/15![British Airways logo]()
$729
This Scandinavian Airlines deal was found by Cheapflights users on 6/13. 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 9/77:50 pm
LHR
- SFO
2 stops26h 50m
Scandinavian Airlines
Sun 9/274:45 pm
SFO
- LHR
2 stops18h 05m
Scandinavian Airlines
Deal found 6/13![Scandinavian Airlines logo]()
$749
This Alaska Airlines deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/175:00 pm
LHR
- ONT
1 stop14h 24m
Alaska Airlines
Tue 9/293:14 pm
ONT
- LHR
1 stop15h 51m
Alaska Airlines
Deal found 6/12![Alaska Airlines logo]()
$764
This Lufthansa deal was found by Cheapflights users on 6/15. 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 7/216:30 am
LHR
- LAX
1 stop14h 40m
Lufthansa
Tue 8/253:35 pm
LAX
- LHR
Nonstop10h 35m
Lufthansa
Deal found 6/15![Lufthansa logo]()
$817
This TAP AIR PORTUGAL deal was found by Cheapflights users on 6/15. 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.
Sat 8/299:15 pm
LGW
- SFO
2 stops48h 50m
TAP AIR PORTUGAL
Sat 9/127:35 pm
SFO
- LGW
1 stop30h 10m
TAP AIR PORTUGAL
Deal found 6/15![TAP AIR PORTUGAL logo]()
$828
This Condor deal was found by Cheapflights users on 6/14. 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.
Thu 9/37:35 pm
LGW
- SFO
1 stop26h 55m
Condor
Sun 9/134:30 pm
SFO
- LGW
1 stop14h 10m
Condor
Deal found 6/14![Condor logo]()
$925
This KLM deal was found by Cheapflights users on 6/13. 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.
Sun 9/206:30 pm
LHR
- LAS
Nonstop10h 45m
KLM
Sat 10/310:00 pm
LAS
- LHR
Nonstop9h 55m
KLM
Deal found 6/13![KLM logo]()
$927
This Condor deal was found by Cheapflights users on 6/16. 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.
Sun 9/610:20 am
LGW
- SFO
2 stops17h 39m
Multiple Airlines
Fri 9/114:30 pm
SFO
- LGW
1 stop18h 20m
Multiple Airlines
Deal found 6/16![Multiple Airlines logo]()
$970
This Turkish Airlines deal was found by Cheapflights users on 6/14. 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 11/1610:55 am
STN
- SFO
1 stop37h 35m
Turkish Airlines
Sat 11/286:35 pm
SFO
- STN
1 stop31h 20m
Turkish Airlines
Deal found 6/14![Turkish Airlines logo]()
$1,007
This United Airlines deal was found by Cheapflights users on 6/13. 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 11/2510:05 am
LHR
- ONT
1 stop15h 42m
United Airlines
Mon 11/301:33 pm
ONT
- LHR
1 stop13h 42m
United Airlines
Deal found 6/13![United Airlines logo]()
$593
This United Airlines deal was found by Cheapflights users on 6/15. 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 8/3110:35 am
LHR
- ONT
1 stop15h 36m
United Airlines
Fri 9/181:18 pm
ONT
- LHR
1 stop12h 22m
United Airlines
Deal found 6/15![United Airlines logo]()
$594
This Virgin Atlantic deal was found by Cheapflights users on 6/14. 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.
Sun 11/228:05 pm
LCY
- SFO
2 stops29h 44m
Virgin Atlantic
Sun 11/291:50 pm
SFO
- LCY
1 stop21h 45m
Virgin Atlantic
Deal found 6/14![Virgin Atlantic logo]()
$701
This United Airlines deal was found by Cheapflights users on 6/14. 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 10/194:15 pm
LHR
- ONT
1 stop14h 44m
United Airlines
Thu 10/291:00 pm
ONT
- LHR
1 stop13h 40m
United Airlines
Deal found 6/14![United Airlines logo]()
$594
This SWISS deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/29:25 am
LGW
- SFO
1 stop15h 10m
SWISS
Sun 7/127:35 pm
SFO
- LGW
1 stop14h 15m
SWISS
Deal found 6/12![SWISS logo]()
$732
This Delta deal was found by Cheapflights users on 6/14. 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.
Sun 8/306:30 am
LHR
- SFO
1 stop13h 15m
Delta
Tue 9/158:55 am
SFO
- LHR
1 stop13h 50m
Delta
Deal found 6/14![Delta logo]()
$742
This Scandinavian Airlines deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/216:40 am
LHR
- LAX
2 stops18h 20m
Scandinavian Airlines
Sat 12/57:30 pm
LAX
- LHR
2 stops30h 05m
Scandinavian Airlines
Deal found 6/12![Scandinavian Airlines logo]()
$763
This Alaska Airlines deal was found by Cheapflights users on 6/13. 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
LHR
- ONT
1 stop14h 42m
Alaska Airlines
Sat 10/242:14 pm
ONT
- LHR
1 stop15h 06m
Alaska Airlines
Deal found 6/13![Alaska Airlines logo]()
$766
This Virgin Atlantic 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/18:25 am
LCY
- LAX
1 stop14h 20m
Virgin Atlantic
Wed 9/236:00 am
LAX
- LCY
2 stops17h 55m
Virgin Atlantic
Deal found 6/11![Virgin Atlantic logo]()
$703
This United Airlines deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/1511:35 am
LHR
- ONT
1 stop16h 45m
United Airlines
Mon 11/231:33 pm
ONT
- LHR
1 stop13h 42m
United Airlines
Deal found 6/16![United Airlines logo]()
$594
This SWISS 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/287:00 am
LHR
- SFO
2 stops17h 15m
SWISS
Fri 10/27:35 pm
SFO
- LHR
1 stop15h 45m
SWISS
Deal found 6/11![SWISS logo]()
$740
This Delta deal was found by Cheapflights users on 6/15. 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.
Tue 8/1810:55 am
LHR
- ONT
1 stop13h 29m
Delta
Tue 8/256:01 pm
ONT
- LHR
1 stop13h 34m
Delta
Deal found 6/15![Delta logo]()
$753
This British Airways deal was found by Cheapflights users on 6/14. 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 6/305:15 pm
LHR
- LAS
Nonstop10h 45m
British Airways
Sun 7/122:36 pm
LAS
- LHR
1 stop14h 09m
British Airways
Deal found 6/14![British Airways logo]()
$865
This United Airlines deal was found by Cheapflights users on 6/13. 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 11/1310:05 am
LHR
- ONT
1 stop15h 42m
United Airlines
Tue 11/171:33 pm
ONT
- LHR
1 stop13h 42m
United Airlines
Deal found 6/13![United Airlines logo]()
$594
This Virgin Atlantic 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/910:25 am
LGW
- LAX
2 stops21h 28m
Virgin Atlantic
Thu 7/166:05 pm
LAX
- LGW
1 stop13h 55m
Virgin Atlantic
Deal found 6/11![Virgin Atlantic logo]()
$723
Last-minute flights from London to CaliforniaDiscover last-minute flight deals from London to California. Data last updated June 16, 2026 and is based on user searches.
Discover last-minute flight deals from London to California. Data last updated June 16, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 6/12. 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 6/192:50 pm
LHR
- ONT
1 stop13h 56m
United Airlines
Tue 7/71:18 pm
ONT
- LHR
1 stop12h 22m
United Airlines
Deal found 6/12![United Airlines logo]()
$592
This United Airlines deal was found by Cheapflights users on 6/15. 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 6/222:50 pm
LHR
- ONT
1 stop13h 56m
United Airlines
Sun 7/51:18 pm
ONT
- LHR
1 stop12h 22m
United Airlines
Deal found 6/15![United Airlines logo]()
$591
This The Travel House deal was found by Cheapflights users on 6/13. 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 The Travel House is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/232:50 pm
LHR
- ONT
1 stop13h 56m
Lufthansa
Tue 7/141:18 pm
ONT
- LHR
1 stop15h 07m
Lufthansa
Deal found 6/13![Lufthansa logo]()
$589
This United Airlines deal was found by Cheapflights users on 6/16. 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 6/2511:25 am
LHR
- ONT
1 stop17h 17m
United Airlines
Sat 7/111:18 pm
ONT
- LHR
1 stop15h 07m
United Airlines
Deal found 6/16![United Airlines logo]()
$596
This The Travel House deal was found by Cheapflights users on 6/16. 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 The Travel House is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/251:40 pm
LHR
- ONT
1 stop16h 15m
Lufthansa
Sat 7/111:18 pm
ONT
- LHR
1 stop12h 22m
Lufthansa
Deal found 6/16![Lufthansa logo]()
$597
This deal was found by Cheapflights users on 6/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/21:40 pm
LHR
- ONT
1 stop16h 15m
United Airlines
Fri 7/245:45 am
ONT
- LHR
1 stop18h 10m
United Airlines
Deal found 6/15![United Airlines logo]()
$443
This The Travel House deal was found by Cheapflights users on 6/16. 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 The Travel House is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/210:00 am
LHR
- ONT
1 stop19h 55m
Lufthansa
Fri 7/241:18 pm
ONT
- LHR
1 stop12h 22m
Lufthansa
Deal found 6/16![Lufthansa logo]()
$590
This United Airlines deal was found by Cheapflights users on 6/13. 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 7/210:00 am
LHR
- ONT
1 stop19h 55m
United Airlines
Tue 7/75:00 am
ONT
- LHR
1 stop23h 25m
United Airlines
Deal found 6/13![United Airlines logo]()
$593
This TravelUp deal was found by Cheapflights users on 6/12. 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.
Thu 7/212:00 pm
LHR
- ONT
1 stop18h 34m
British Airways
Thu 7/3012:35 pm
ONT
- LHR
1 stop14h 20m
British Airways
Deal found 6/12![British Airways logo]()
$600
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/87:25 am
LHR
- ONT
2 stops23h 26m
United Airlines
Thu 7/166:00 am
ONT
- LHR
1 stop24h 10m
United Airlines
Deal found 6/11![United Airlines logo]()
$560
This ChecknFly deal was found by Cheapflights users on 6/16. 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.
Mon 7/136:05 pm
LHR
- LAX
2 stops27h 40m
Iberia
Wed 7/224:15 pm
LAX
- LHR
Nonstop10h 35m
Iberia
Deal found 6/16![Iberia logo]()
$644
This deal was found by Cheapflights users on 6/16. 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.
Tue 7/2810:00 am
LHR
- LAX
1 stop19h 26m
United Airlines
Sat 8/88:47 am
LAX
- LHR
1 stop16h 53m
United Airlines
Deal found 6/16![United Airlines logo]()
$642
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 16, 2026.
Search for one-way flight options from London to California. Find affordable one-way fares based on user searches. Data last updated June 16, 2026.
This TravelUp deal was found by Cheapflights users on 6/14. 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 9/811:00 am
LHR
- ONT
1 stop15h 15m
British Airways
Deal found 6/14![British Airways logo]()
$466
This TravelUp deal was found by Cheapflights users on 6/15. 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.
Sun 8/304:10 pm
LHR
- ONT
1 stop13h 45m
British Airways
Deal found 6/15![British Airways logo]()
$467
This American Airlines deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/108:15 am
LHR
- ONT
2 stops23h 21m
American Airlines
Deal found 6/12![American Airlines logo]()
$474
This American Airlines deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/238:15 am
LHR
- ONT
2 stops18h 32m
American Airlines
Deal found 6/16![American Airlines logo]()
$475
This Expedia deal was found by Cheapflights users on 6/15. 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 6/15![Lufthansa logo]()
$477
This Mytrip deal was found by Cheapflights users on 6/15. 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 11/113:00 pm
LHR
- ONT
2 stops26h 57m
British Airways
Deal found 6/15![British Airways logo]()
$479
This Mytrip deal was found by Cheapflights users on 6/16. 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.
Thu 9/104:10 pm
LHR
- ONT
1 stop14h 33m
British Airways
Deal found 6/16![British Airways logo]()
$480
This SmartFares deal was found by Cheapflights users on 6/16. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/45:00 pm
LHR
- ONT
1 stop14h 45m
Alaska Airlines
Deal found 6/16![Alaska Airlines logo]()
$481
This Cheapflightsfares deal was found by Cheapflights users on 6/14. 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 9/242:25 pm
LHR
- ONT
1 stop14h 44m
British Airways
Deal found 6/14![British Airways logo]()
$482
This Cheapflightsfares deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/2411:00 am
LHR
- ONT
1 stop15h 15m
British Airways
Deal found 6/16![British Airways logo]()
$484
This SmartFares deal was found by Cheapflights users on 6/16. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/35:00 pm
LHR
- ONT
1 stop25h 21m
Alaska Airlines
Deal found 6/16![Alaska Airlines logo]()
$486
This Cheapflightsfares deal was found by Cheapflights users on 6/14. 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.
Tue 10/132:25 pm
LHR
- LAS
1 stop15h 24m
British Airways
Deal found 6/14![British Airways logo]()
$574
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 16, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $443 |
Popular in | December |
Cheapest in | September |
Average price | $726 |
Good round-trip deal | $718 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 16, 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
Thu 7/2
4:40 pm-10:51 pm
2 stops38h 11m
Ontario
Wed 7/8
6:39 pm-7:25 am
1 stop28h 46m
$592
LondonOntario
LHR - ONT
LHRONT
London Heathrow
Wed 11/25
10:05 am-5:47 pm
1 stop15h 42m
Ontario
Mon 11/30
1:33 pm-11:15 am
1 stop13h 42m
$593
LondonOntario
LHR - ONT
LHRONT
London Heathrow
Mon 8/31
10:35 am-6:11 pm
1 stop15h 36m
Ontario
Fri 9/18
1:18 pm-9:40 am
1 stop12h 22m
$594
LondonOntario
LHR - ONT
LHRONT
London Heathrow
Mon 10/19
4:15 pm-10:59 pm
1 stop14h 44m
Ontario
Thu 10/29
1:00 pm-9:40 am
1 stop13h 40m
$594
LondonOntario
LHR - ONT
LHRONT
London Heathrow
Sun 11/15
11:35 am-8:20 pm
1 stop16h 45m
Ontario
Mon 11/23
1:33 pm-11:15 am
1 stop13h 42m
$594
LondonOntario
LHR - ONT
LHRONT
London Heathrow
Fri 11/13
10:05 am-5:47 pm
1 stop15h 42m
Ontario
Tue 11/17
1:33 pm-11:15 am
1 stop13h 42m
$594
LondonLos Angeles
LGW - LAX
LGWLAX
London Gatwick
Sat 10/3
8:10 am-7:00 pm
1 stop18h 50m
Los Angeles
Sat 10/10
8:55 pm-10:15 am
1 stop29h 20m
$676
LondonLos Angeles
LGW - LAX
LGWLAX
London Gatwick
Sat 10/3
10:25 am-11:42 pm
2 stops21h 17m
Los Angeles
Sat 10/10
6:25 pm-4:00 pm
1 stop13h 35m
$693
LondonSan Francisco
LCY - SFO
LCYSFO
London City
Sun 11/22
8:05 pm-5:49 pm
2 stops29h 44m
San Francisco
Sun 11/29
1:50 pm-7:35 pm
1 stop21h 45m
$701
LondonLos Angeles
LCY - LAX
LCYLAX
London City
Tue 9/1
8:25 am-2:45 pm
1 stop14h 20m
Los Angeles
Wed 9/23
6:00 am-7:55 am
2 stops17h 55m
$703
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-LAX
LGW-LAX
LHR-SFO
LGW-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-LAX
LGW-LAX
LHR-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 $578). Flying from London to California in December is currently the most expensive (average of $796). 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 16, 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 16, 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 16, 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.
Food
7.3
Boarding
7.8
Overall
7.8
Entertainment
7.2
Crew
8.4
Comfort
7.7
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Food
7.3
Boarding
7.8
Overall
7.8
Entertainment
7.2
Crew
8.4
Comfort
7.7
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Food
7.3
Boarding
7.8
Overall
7.8
Entertainment
7.2
Crew
8.4
Comfort
7.7
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Food
7.3
Boarding
7.8
Overall
7.8
Entertainment
7.2
Crew
8.4
Comfort
7.7
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Food
7.3
Boarding
7.8
Overall
7.8
Entertainment
7.2
Crew
8.4
Comfort
7.7
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Food
7.3
Boarding
7.8
Overall
7.8
Entertainment
7.2
Crew
8.4
Comfort
7.7
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 16, 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 16, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$396 | Average$827 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$415 | Average$559 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$416 | Average$686 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$449 | Average$494 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$454 | Average$749 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$468 | Average$655 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$494 | Average$808 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$494 | Average$769 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$500 | Average$655 | FlexibilityNo cancel fee | On-time78% | |
| Cheapest$514 | Average$775 | FlexibilityNo cancel fee | On-time70% |