Cheap flights from California to London, ON from C$ 216
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 15/8. Fares are subject to change and may not be available on all flights or dates of travel.
Cheap flight deals from California to London
Keep the following information in mind while searching for California to London flight deals. Data was last updated 21 May 2025.
Find flight deals from California to London
Cheapest flights from California to LondonExplore the most affordable flight options available from California to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 21 May 2025.
Explore the most affordable flight options available from California to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 21 May 2025.
Cheapflights Fare Finder
Customize your flight search to find flights from California to London 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 629,999 searches. Data last updated 21 May 2025.
Use the filters below to find and compare flights from California to London that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
San FranciscoLondon
SFO - YXU
SFOYXU
San Francisco
Tue 10/6
10:56 p.m.-9:19 a.m.
1 stop7h 23m
London
Tue 17/6
3:35 p.m.-10:02 p.m.
1 stop9h 27m
San FranciscoLondon
SFO - YXU
SFOYXU
San Francisco
Sun 13/7
6:05 p.m.-5:14 a.m.
1 stop8h 09m
London
Sun 20/7
8:00 p.m.-12:05 p.m.
1 stop19h 05m
San FranciscoLondon
SFO - YXU
SFOYXU
San Francisco
Sun 13/7
2:45 p.m.-5:14 a.m.
2 stops11h 29m
London
Sun 20/7
8:00 p.m.-10:53 p.m.
3 stops29h 53m
San FranciscoLondon
SFO - YXU
SFOYXU
San Francisco
Tue 3/6
10:56 p.m.-9:19 a.m.
1 stop7h 23m
London
Fri 6/6
3:35 p.m.-9:37 p.m.
1 stop9h 02m
San JoseLondon
SJC - YXU
SJCYXU
San Jose
Sat 11/10
10:53 a.m.-5:12 a.m.
2 stops15h 19m
London
Sat 18/10
6:00 a.m.-7:00 p.m.
2 stops16h 00m
San JoseLondon
SJC - YXU
SJCYXU
San Jose
Fri 4/7
6:20 a.m.-9:27 p.m.
2 stops12h 07m
London
Fri 11/7
6:15 a.m.-1:22 p.m.
2 stops10h 07m
San JoseLondon
SJC - YXU
SJCYXU
San Jose
Mon 2/6
8:05 p.m.-7:09 p.m.
2 stops20h 04m
London
Thu 5/6
6:00 a.m.-5:28 p.m.
2 stops14h 28m
San FranciscoLondon
SFO - YXU
SFOYXU
San Francisco
Fri 15/8
7:30 a.m.-7:09 p.m.
1 stop8h 39m
San FranciscoLondon
SFO - YXU
SFOYXU
San Francisco
Thu 14/8
12:20 a.m.-5:07 p.m.
2 stops13h 47m
San FranciscoLondon
SFO - YXU
SFOYXU
San Francisco
Fri 15/8
10:15 a.m.-5:14 a.m.
3 stops15h 59m
Best time to book a flight from California to London
Have a flexible travel schedule? Discover the best time to fly to London from California with our price prediction graph.
Cheapflights Insights
Everything you need to know about your flight from California to London
What is the cheapest month to book a flight from California to London, Ontario?
Currently, October is the cheapest month in which you can book a flight from California to London, Ontario (average of C$ 243). Flying from California to London, Ontario in December is currently the most expensive (average of C$ 478). 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 CA to YXU?
Find hourly flight availability from California to London. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 21 May 2025.
When flying from California to London, Ontario, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
Rainfall in London by month
Plan your trip to London by taking into account the average rainfall totals by month.
In terms of precipitation, rainfall in London, Ontario ranges from 70.0 - 100.0 mm per month. January is typically the wettest month, when rainfall can reach 100.0 mm. March is typically the driest time to visit London, Ontario when rainfall is around 70.0 mm.
Temperature in London by month
Plan your trip to London by taking into account the average temperature totals by month.
If weather is an important factor for your trip to London, Ontario, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 20.0 C. Travellers hoping to avoid the cold should look outside of February, when temperatures are typically at their lowest (around -6.0 C).
Reviews of airlines servicing London
Get insights into the airlines that provide service to London. 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 London. Reviews last updated 21 May 2025.
Read through reviews of airlines operating flights from California to London, such as United Airlines, WestJet and Air Canada. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Food
Comfort
Crew
Boarding
Overall
Entertainment
Reviews
Thomas,Mar 2025
SFO - TPE
Food
Comfort
Crew
Boarding
Overall
Entertainment
Reviews
Thomas,Mar 2025
SFO - TPE
Food
Comfort
Crew
Boarding
Overall
Entertainment
Reviews
Thomas,Mar 2025
SFO - TPE
Food
Comfort
Crew
Boarding
Overall
Entertainment
Reviews
Thomas,Mar 2025
SFO - TPE
Related info for your journey
Find useful and relevant information for your journey from California to London. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for California to London
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Can Cheapflights find flights from California to London with no change fees?
Yes, we can. To see specific flights from California to London with no change fees, users can toggle flexible booking options after using the search form above to find flights.
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