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Cheap flights from California to London, ON from C$ 194

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 25/6. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — YXU
17 Jun — 24 Jun1
1 adult

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 12 June 2025.

Round-trip from

C$ 379

One-way from

C$ 194

Popular in

July

Cheapest in

May
WestJet
  • WestJet
  • 1/8-8/8
  • 3 total stops
  • 23h 34m total
  • California to London
Search Deals
WestJet
  • WestJet
  • 25/6
  • 2 total stops
  • 11h 29m total
  • California to London
Search Deals
Highest demand for flights based on searches. 30% potential increase in price (C$ 317 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (C$ 37 potential savings vs. average RT price).
Search Deals

Find flight deals from California to London

Cheapest flights from California to London
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 12 June 2025.

Fri 1/81:00 p.m.SAN - YXU
2 stops13h 14mWestJet
Fri 8/86:00 a.m.YXU - SAN
1 stop10h 20mWestJet
Deal found 12/6C$ 379
Sun 13/76:05 p.m.SFO - YXU
1 stop8h 09mWestJet
Sun 20/78:00 p.m.YXU - SFO
1 stop28h 25mWestJet
Deal found 11/6C$ 405
Tue 9/94:35 p.m.SFO - YXU
2 stops13h 42mAir Canada
Fri 26/96:15 a.m.YXU - SFO
1 stop9h 43mAir Canada
Deal found 10/6C$ 438
Sun 13/76:05 p.m.SFO - YXU
1 stop8h 09mMultiple Airlines
Wed 16/76:00 a.m.YXU - SFO
2 stops29h 00mMultiple Airlines
Deal found 12/6C$ 457
Fri 25/71:00 p.m.SAN - YXU
2 stops13h 14mMultiple Airlines
Fri 1/86:00 a.m.YXU - SAN
3 stops30h 55mMultiple Airlines
Deal found 10/6C$ 484
Mon 1/1211:50 a.m.SAN - YXU
2 stops18h 15mAir Canada
Mon 8/125:45 a.m.YXU - SAN
1 stop8h 08mAir Canada
Deal found 10/6C$ 565
Sun 13/711:05 p.m.SFO - YXU
2 stops12h 57mUnited Airlines
Wed 16/73:40 p.m.YXU - SFO
2 stops12h 17mUnited Airlines
Deal found 12/6C$ 570
Mon 1/1211:50 a.m.SAN - YXU
1 stop6h 55mUnited Airlines
Mon 8/125:45 a.m.YXU - SAN
1 stop8h 08mUnited Airlines
Deal found 10/6C$ 628
Sun 27/74:22 p.m.SJC - YXU
3 stops33h 52mMultiple Airlines
Sun 3/86:00 a.m.YXU - SJC
3 stops33h 05mMultiple Airlines
Deal found 12/6C$ 819
Fri 11/72:32 p.m.SJC - YXU
2 stops11h 42mDelta
Sun 13/76:00 a.m.YXU - SJC
2 stops13h 52mDelta
Deal found 10/6C$ 1,004
Sat 12/74:00 p.m.SJC - YXU
2 stops20h 02mUnited Airlines
Tue 15/76:15 a.m.YXU - SJC
2 stops14h 03mUnited Airlines
Deal found 10/6C$ 1,097
Wed 10/911:14 a.m.SJC - YXU
2 stops14h 58mWestJet
Wed 24/96:00 a.m.YXU - SJC
2 stops14h 48mWestJet
Deal found 10/6C$ 1,256

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 12 June 2025.
Use the filters below to find and compare flights from California to London that are best for you.

Fly from

California

Fly to

London

Route

Depart

Return

Price

San DiegoLondon

SAN - YXU

SANYXU

San Diego

Fri 1/8

1:00 p.m.-5:14 a.m.

2 stops13h 14m

London

Fri 8/8

6:00 a.m.-1:20 p.m.

1 stop10h 20m

C$ 379

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.-9:25 p.m.

1 stop28h 25m

C$ 405

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Tue 9/9

4:35 p.m.-9:17 a.m.

2 stops13h 42m

London

Fri 26/9

6:15 a.m.-12:58 p.m.

1 stop9h 43m

C$ 438

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Sun 13/7

6:05 p.m.-5:14 a.m.

1 stop8h 09m

London

Wed 16/7

6:00 a.m.-8:00 a.m.

2 stops29h 00m

C$ 457

San DiegoLondon

SAN - YXU

SANYXU

San Diego

Fri 25/7

1:00 p.m.-5:14 a.m.

2 stops13h 14m

London

Fri 1/8

6:00 a.m.-9:55 a.m.

3 stops30h 55m

C$ 484

San DiegoLondon

SAN - YXU

SANYXU

San Diego

Mon 1/12

11:50 a.m.-9:05 a.m.

2 stops18h 15m

London

Mon 8/12

5:45 a.m.-10:53 a.m.

1 stop8h 08m

C$ 565

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Sun 13/7

11:05 p.m.-3:02 p.m.

2 stops12h 57m

London

Wed 16/7

3:40 p.m.-12:57 a.m.

2 stops12h 17m

C$ 570

San DiegoLondon

SAN - YXU

SANYXU

San Diego

Mon 1/12

11:50 a.m.-9:45 p.m.

1 stop6h 55m

London

Mon 8/12

5:45 a.m.-10:53 a.m.

1 stop8h 08m

C$ 628

San JoseLondon

SJC - YXU

SJCYXU

San Jose

Sun 27/7

4:22 p.m.-5:14 a.m.

3 stops33h 52m

London

Sun 3/8

6:00 a.m.-12:05 p.m.

3 stops33h 05m

C$ 819

San JoseLondon

SJC - YXU

SJCYXU

San Jose

Fri 11/7

2:32 p.m.-5:14 a.m.

2 stops11h 42m

London

Sun 13/7

6:00 a.m.-4:52 p.m.

2 stops13h 52m

C$ 1,004

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/6

Showing 1-10 of 16 results
1
2

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.
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 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 12 June 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 12 June 2025.
Read through reviews of airlines operating flights from California to London, such as Delta, United Airlines and WestJet. 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.
Delta
8.0
Very good
7,950 reviews
Check prices

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very good
7,950 reviews
Delta
8.0
Very good
7,950 reviews
Check prices

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
United Airlines
7.4
Good
8,790 reviews
Delta
8.0
Very good
7,950 reviews
Check prices

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
WestJet
7.2
Good
2,868 reviews
Delta
8.0
Very good
7,950 reviews
Check prices

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Air Canada
7.1
Good
9,531 reviews
Delta
8.0
Very good
7,950 reviews
Check prices

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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.

  • What airport do you fly into for flights to London from California?

    London (YXU) is the airport you will fly into if you book a flight from California to London. It is only a 8.6 km journey from London (YXU) to London’s city centre.

  • What are the cheapest airlines to fly from California to London, Ontario one-way?

    To fly one-way, consider booking your trip with WestJet, which is currently one of the cheapest options available, starting at C$ 194. Air Canada flights start at C$ 205 while deals on United Airlines start at C$ 254 one-way.

  • What are the most popular routes from California to London, Ontario?

    The most popular route from California to London, Ontario is San Francisco - London. You may also consider San Jose - London or San Diego - London.

  • Can I find deals for flights from California to London that include hotel bookings?

    Yes. In addition to deals on California to London flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from California to London?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from California to London.

  • Can I find deals for business class flights from California to London?

    Yes. Cheapflights offers flight deals from California to London by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • 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.

See more FAQs

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