What are the cheapest airlines to fly from California to London Heathrow Airport one-way?

The cheapest airline one-way is TAP AIR PORTUGAL, with whom users have recently found tickets for as low as £167. However, be on the lookout for offers from Iberia and WestJet, as they are both options that can get you from California to London Heathrow Airport for a low price.

In terms of precipitation, rainfall in London Heathrow Airport ranges from 40.0 - 70.0 inches per month. January is typically the wettest month, when rainfall can reach 70.0 mm. July is typically the driest time to visit London Heathrow Airport when rainfall is around 40.0 mm.

If weather is an important factor for your trip to London Heathrow Airport, 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 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 C).

What are the most popular routes from California to London Heathrow Airport?

Most travelers choose Los Angeles - London Heathrow, San Francisco - London Heathrow or Ontario - London Heathrow when deciding on the best route from California to London Heathrow Airport.

What are the cheapest flights from California to London Heathrow Airport?

Looking for the cheapest flight from California to London Heathrow Airport? While on average our users pay £1,745, our data indicates the cheapest price to be £277. The most popular route (Los Angeles - London Heathrow), is priced around £277.

What are the most reliable airlines from California to London Heathrow Airport?

Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from California to London Heathrow Airport on time: Air Canada (86%), Austrian Airlines (86%), United Airlines (86%).

What are the most popular airlines that fly from California to London Heathrow Airport?

Before booking your flight from California to London Heathrow Airport check out the most popular airlines for this route: American Airlines, Air France or Finnair.

How far in advance should I book a flight from California to London Heathrow Airport?

Travelers have found it’s best to book a flight 56 days in advance to save up to 51% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 56 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from California to London Heathrow Airport 1-2 weeks in advance for as low as £528, or £721 for flights within the next 24 hours.

What is the cheapest month to fly from California to London Heathrow Airport?

October is one of the best times of the year to fly to London Heathrow Airport from California. Prices for October average £534 per person but you can even find prices for as low as £324. The most expensive prices can be found in the month of December. Opting for a October flight can save you 33% on your journey compared to booking in December

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

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

How can I find direct flights from California to Heathrow?

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

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

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

£160+ Flights from California to London Heathrow Airport

Cheap flight deals from California to Heathrow

Round-trip from	£329
One-way from	£160
Popular in	December
Cheapest in	October
Average price	£599
Good round-trip deal	£406 or less
Good one-way deal	£304 or less

Virgin Atlantic
3/8-19/8
2 total stops
38h 34m total
California to London

Search Deals

27/7
1 total stop
32h 50m total
California to London

Search Deals

Highest demand for flights based on searches. 9% potential increase in price (£41 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease (£13 potential savings vs. average return price).

Search Deals

Average for round-trip flights in July 2025

Search Deals

Price to beat on a round-trip flight from California to London Heathrow.

Search Deals

Price to beat on a one-way flight from California to London Heathrow.

Search Deals

Find flight deals from California to Heathrow

Cheapest flights from California to Heathrow
Explore the most affordable flight options available from California to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 11 July 2025.

Sun 3/806:30SJC - LHR

1 stop23h 00mVirgin Atlantic

Tue 19/810:55LHR - SJC

1 stop15h 34mVirgin Atlantic

Deal found 10/7£329

Sun 3/806:20SJC - LHR

1 stop18h 00mUnited Airlines

Tue 19/811:25LHR - SJC

1 stop17h 52mUnited Airlines

Deal found 9/7£361

Sat 23/812:42BUR - LHR

2 stops34h 03mVirgin Atlantic

Sat 30/817:10LHR - BUR

2 stops36h 31mVirgin Atlantic

Deal found 9/7£380

Mon 4/816:55OAK - LHR

2 stops37h 20mDelta

Wed 20/811:45LHR - OAK

2 stops20h 05mDelta

Deal found 10/7£380

Tue 11/1116:02SJC - LHR

2 stops31h 08mAir Canada

Tue 18/1118:00LHR - SJC

2 stops34h 53mAir Canada

Deal found 10/7£384

Mon 4/806:00OAK - LHR

1 stop19h 50mKLM

Wed 20/811:00LHR - OAK

1 stop20h 50mKLM

Deal found 10/7£385

Tue 19/813:20SJC - LHR

1 stop15h 50mKLM

Tue 26/813:05LHR - SJC

1 stop17h 33mKLM

Deal found 9/7£386

Wed 22/1013:00ONT - LHR

1 stop12h 50mKLM

Fri 31/1012:20LHR - ONT

1 stop17h 22mKLM

Deal found 11/7£386

Sun 3/806:20SJC - LHR

1 stop22h 50mDelta

Tue 19/806:15LHR - SJC

2 stops17h 52mDelta

Deal found 9/7£386

Wed 3/906:05ONT - LHR

1 stop19h 45mDelta

Thu 11/909:00LHR - ONT

2 stops21h 23mDelta

Deal found 9/7£386

Wed 20/812:42BUR - LHR

1 stop16h 48mMultiple Airlines

Wed 27/806:15LHR - BUR

2 stops18h 02mMultiple Airlines

Deal found 8/7£386

Wed 13/813:10SNA - LHR

1 stop12h 40mDelta

Wed 20/809:00LHR - SNA

2 stops21h 26mDelta

Deal found 9/7£386

Best flights from California to Heathrow
Discover carefully curated flight deals from California to Heathrow that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 11 July 2025.

Sun 3/806:30SJC - LHR

1 stop23h 00mVirgin Atlantic

Tue 19/810:55LHR - SJC

1 stop15h 34mVirgin Atlantic

Deal found 10/7£329

Sun 3/806:20SJC - LHR

1 stop18h 00mUnited Airlines

Tue 19/811:25LHR - SJC

1 stop17h 52mUnited Airlines

Deal found 9/7£361

Mon 4/816:55OAK - LHR

2 stops37h 20mDelta

Wed 20/811:45LHR - OAK

2 stops20h 05mDelta

Deal found 10/7£380

Tue 11/1116:02SJC - LHR

2 stops31h 08mAir Canada

Tue 18/1118:00LHR - SJC

2 stops34h 53mAir Canada

Deal found 10/7£384

Mon 4/806:00OAK - LHR

1 stop19h 50mKLM

Wed 20/811:00LHR - OAK

1 stop20h 50mKLM

Deal found 10/7£385

Wed 20/812:42BUR - LHR

1 stop16h 48mMultiple Airlines

Wed 27/806:15LHR - BUR

2 stops18h 02mMultiple Airlines

Deal found 8/7£386

Thu 7/820:05LAX - LHR

Nonstop10h 30mBritish Airways

Fri 22/814:45LHR - LAX

Nonstop11h 20mBritish Airways

Deal found 9/7£400

Sun 27/721:30LAX - LHR

Nonstop10h 35mIberia

Tue 12/820:50LHR - LAX

2 stops31h 37mIberia

Deal found 9/7£400

Thu 21/820:15LAX - LHR

1 stop15h 10mAer Lingus

Sun 31/808:50LHR - LAX

1 stop17h 35mAer Lingus

Deal found 11/7£401

Thu 21/816:20SFO - LHR

1 stop21h 45mTAP AIR PORTUGAL

Sat 30/806:00LHR - SFO

1 stop19h 35mTAP AIR PORTUGAL

Deal found 10/7£408

Fri 1/821:30LAX - LHR

Nonstop10h 35mFinnair

Thu 14/809:30LHR - LAX

1 stop15h 35mFinnair

Deal found 9/7£425

Wed 20/813:55SFO - LHR

2 stops36h 05mAustrian Airlines

Fri 29/809:30LHR - SFO

2 stops41h 28mAustrian Airlines

Deal found 9/7£428

Direct flights from California to Heathrow
Explore direct flight options from California to Heathrow based on user searches, and compare prices and availability for your desired travel dates. Data last updated 11 July 2025.

Thu 21/821:35LAX - LHR

Nonstop10h 30mBritish Airways

Wed 27/814:45LHR - LAX

Nonstop11h 20mBritish Airways

Deal found 10/7£395

Sun 24/816:45LAX - LHR

Nonstop10h 25mAir Canada

Sun 31/813:05LHR - LAX

Nonstop11h 05mAir Canada

Deal found 10/7£397

Fri 1/822:50LAX - LHR

Nonstop10h 25mVirgin Atlantic

Wed 27/809:55LHR - LAX

Nonstop11h 20mVirgin Atlantic

Deal found 10/7£397

Thu 31/716:45LAX - LHR

Nonstop10h 25mUnited Airlines

Wed 20/813:05LHR - LAX

Nonstop11h 05mUnited Airlines

Deal found 9/7£405

Thu 21/816:05SFO - LHR

Nonstop10h 20mVirgin Atlantic

Wed 27/816:25LHR - SFO

Nonstop11h 05mVirgin Atlantic

Deal found 9/7£409

Mon 4/816:30SFO - LHR

Nonstop10h 25mBritish Airways

Sun 31/810:45LHR - SFO

Nonstop11h 05mBritish Airways

Deal found 9/7£410

Sun 31/822:50LAX - LHR

Nonstop10h 25mDelta

Tue 30/909:55LHR - LAX

Nonstop11h 20mDelta

Deal found 9/7£411

Thu 4/919:55SFO - LHR

Nonstop10h 15mUnited Airlines

Thu 11/912:20LHR - SFO

Nonstop11h 05mUnited Airlines

Deal found 10/7£418

Sat 23/819:50SFO - LHR

Nonstop10h 20mLufthansa

Sat 30/816:15LHR - SFO

Nonstop10h 55mLufthansa

Deal found 9/7£425

Tue 29/716:05SFO - LHR

Nonstop10h 20mKLM

Wed 13/816:25LHR - SFO

Nonstop11h 05mKLM

Deal found 9/7£433

Sun 31/821:20SFO - LHR

Nonstop10h 20mDelta

Mon 8/916:25LHR - SFO

Nonstop11h 05mDelta

Deal found 10/7£436

Fri 8/822:15LAS - LHR

Nonstop10h 00mBritish Airways

Mon 25/817:15LHR - LAS

Nonstop10h 40mBritish Airways

Deal found 10/7£481

Last-minute flights from California to Heathrow
Discover last-minute flight deals from California to Heathrow. Data last updated 11 July 2025 and is based on user searches.

Wed 16/721:30LAX - LHR

Nonstop10h 35mIberia

Wed 20/820:50LHR - LAX

1 stop29h 15mIberia

Deal found 9/7£400

Wed 16/716:00SFO - LHR

Nonstop10h 25mUnited Airlines

Fri 15/812:20LHR - SFO

Nonstop11h 00mUnited Airlines

Deal found 9/7£418

Wed 16/713:15ONT - LHR

1 stop12h 35mDelta

Wed 20/811:20LHR - ONT

1 stop15h 51mDelta

Deal found 9/7£421

Wed 16/712:30OAK - LHR

1 stop13h 20mDelta

Wed 23/706:30LHR - OAK

2 stops25h 25mDelta

Deal found 9/7£424

Wed 16/712:13SFO - LHR

1 stop16h 32mBritish Airways

Wed 23/709:55LHR - SFO

1 stop20h 55mBritish Airways

Deal found 9/7£425

Sun 20/715:30LAX - LHR

Nonstop10h 30mDelta

Thu 14/806:15LHR - LAX

1 stop14h 50mDelta

Deal found 9/7£405

Sun 20/708:05LAX - LHR

1 stop17h 55mUnited Airlines

Tue 12/813:05LHR - LAX

Nonstop11h 05mUnited Airlines

Deal found 9/7£410

Sun 20/721:30LAX - LHR

Nonstop10h 35mAmerican Airlines

Tue 5/809:25LHR - LAX

1 stop15h 58mAmerican Airlines

Deal found 9/7£419

Mon 21/712:17SJC - LHR

1 stop17h 13mDelta

Tue 29/706:15LHR - SJC

2 stops17h 48mDelta

Deal found 11/7£405

Mon 21/713:41SFO - LHR

1 stop15h 49mDelta

Tue 5/812:25LHR - SFO

1 stop17h 00mDelta

Deal found 9/7£411

Mon 21/713:17SFO - LHR

1 stop12h 33mKLM

Wed 6/812:45LHR - SFO

1 stop16h 40mKLM

Deal found 10/7£416

Mon 21/713:25LAX - LHR

Nonstop10h 35mBritish Airways

Wed 30/717:20LHR - LAX

1 stop28h 41mBritish Airways

Deal found 9/7£422

One-way flights from California to Heathrow
Search for one-way flight options from California to Heathrow. Find affordable one-way fares based on user searches. Data last updated 11 July 2025.

Sun 27/721:25LAX - LHR

1 stop32h 50mMultiple Airlines

Deal found 9/7£160

Tue 22/716:40LAX - LHR

1 stop21h 20mTAP AIR PORTUGAL

Deal found 10/7£167

Fri 3/1019:50LAX - LHR

1 stop16h 15mIberia

Deal found 10/7£184

Tue 12/806:45SNA - LHR

3 stops21h 10mMultiple Airlines

Deal found 9/7£195

Tue 5/819:26SMF - LHR

3 stops32h 29mMultiple Airlines

Deal found 9/7£196

Sat 13/915:15SJC - LHR

2 stops36h 40mMultiple Airlines

Deal found 9/7£202

Tue 9/914:05LAS - LHR

2 stops22h 15mMultiple Airlines

Deal found 10/7£205

Sun 2/1113:00SNA - LHR

1 stop15h 50mWestJet

Deal found 9/7£206

Sat 11/1018:20LAS - LHR

1 stop33h 45mWestJet

Deal found 10/7£210

Wed 7/107:00LAX - LHR

1 stop21h 50mWestJet

Deal found 9/7£212

Wed 27/806:00OAK - LHR

3 stops30h 20mMultiple Airlines

Deal found 10/7£216

Sat 23/811:12BUR - LHR

3 stops35h 18mMultiple Airlines

Deal found 9/7£218

Cheapflights Fare Finder

Use the filters below to find and compare flights from California to London Heathrow Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

San JoseLondon

SJC - LHR

SJCLHR

San Jose

Sun 3/8

06:30-13:30

1 stop23h 00m

London Heathrow

Tue 19/8

10:55-18:29

1 stop15h 34m

£329

San JoseLondon

SJC - LHR

SJCLHR

San Jose

Sun 3/8

06:20-08:20

1 stop18h 00m

London Heathrow

Tue 19/8

11:25-21:17

1 stop17h 52m

£361

OaklandLondon

OAK - LHR

OAKLHR

Oakland

Mon 4/8

16:55-14:15

2 stops37h 20m

London Heathrow

Wed 20/8

11:45-23:50

2 stops20h 05m

£380

BurbankLondon

BUR - LHR

BURLHR

Burbank Bob Hope

Sat 23/8

12:42-06:45

2 stops34h 03m

London Heathrow

Sat 30/8

17:10-21:41

2 stops36h 31m

£380

San JoseLondon

SJC - LHR

SJCLHR

San Jose

Tue 11/11

16:02-07:10

2 stops31h 08m

London Heathrow

Tue 18/11

18:00-20:53

2 stops34h 53m

£384

OaklandLondon

OAK - LHR

OAKLHR

Oakland

Mon 4/8

06:00-09:50

1 stop19h 50m

London Heathrow

Wed 20/8

11:00-23:50

1 stop20h 50m

£385

San JoseLondon

SJC - LHR

SJCLHR

San Jose

Tue 19/8

13:20-13:10

1 stop15h 50m

London Heathrow

Tue 26/8

13:05-22:38

1 stop17h 33m

£386

BurbankLondon

BUR - LHR

BURLHR

Burbank Bob Hope

Wed 20/8

12:42-13:30

1 stop16h 48m

London Heathrow

Wed 27/8

06:15-16:17

2 stops18h 02m

£386

San JoseLondon

SJC - LHR

SJCLHR

San Jose

Sun 3/8

06:20-13:10

1 stop22h 50m

London Heathrow

Tue 19/8

06:15-16:07

2 stops17h 52m

£386

OntarioLondon

ONT - LHR

ONTLHR

Ontario

Wed 3/9

06:05-09:50

1 stop19h 45m

London Heathrow

Thu 11/9

09:00-22:23

2 stops21h 23m

£386

Flights are sorted by cheapest return flights first.

Deals found on 9/7

Showing 1-10 of 60 results

...

Best time to book a flight from California to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from California with our price prediction graph.

Estimated return 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 Heathrow Airport

What is the cheapest month to book a flight from California to London Heathrow Airport?

Currently, January is the cheapest month in which you can book a flight from California to London Heathrow Airport (average of £112). Flying from California to London Heathrow Airport in August is currently the most expensive (average of £164). 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 LHR?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from California to London Heathrow Airport as you normally would.

Weekly flight availability from California to London Heathrow Airport

The most flights from USCA to LHR are scheduled on a Monday (59 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (44 on average).

How much does it cost for a return flight from California to London Heathrow Airport?

Reviews of airlines servicing Heathrow

Read through reviews of airlines operating flights from California to London Heathrow Airport, such as Delta, KLM, andAustrian Airlines. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very Good

7,951 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Delta

8.0

Very Good

7,951 reviews

Delta

8.0

Very Good

7,951 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

KLM

7.8

Good

1,372 reviews

Delta

8.0

Very Good

7,951 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Austrian Airlines

7.6

Good

811 reviews

Delta

8.0

Very Good

7,951 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Finnair

7.6

Good

1,312 reviews

Delta

8.0

Very Good

7,951 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Air France

7.5

Good

1,467 reviews

Delta

8.0

Very Good

7,951 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

What are the cheapest airlines to fly from California to London Heathrow Airport one-way?
The cheapest airline one-way is TAP AIR PORTUGAL, with whom users have recently found tickets for as low as £167. However, be on the lookout for offers from Iberia and WestJet, as they are both options that can get you from California to London Heathrow Airport for a low price.
What are the most popular routes from California to London Heathrow Airport?
Most travelers choose Los Angeles - London Heathrow, San Francisco - London Heathrow or Ontario - London Heathrow when deciding on the best route from California to London Heathrow Airport.
What are the most reliable airlines from California to London Heathrow Airport?
Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from California to London Heathrow Airport on time: Air Canada (86%), Austrian Airlines (86%), United Airlines (86%).
What are the cheapest flights from California to London Heathrow Airport?
Looking for the cheapest flight from California to London Heathrow Airport? While on average our users pay £1,745, our data indicates the cheapest price to be £277. The most popular route (Los Angeles - London Heathrow), is priced around £277.
Can I find deals for flights from California to Heathrow that include hotel bookings?
Yes. In addition to deals on California to Heathrow flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from California to Heathrow?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from California to Heathrow.
Can I find deals for business class flights from California to Heathrow?
Yes. Cheapflights offers flight deals from California to Heathrow 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 Heathrow Airport?
Currently, January is the cheapest month in which you can book a flight from California to London Heathrow Airport (average of £112). Flying from California to London Heathrow Airport in August is currently the most expensive (average of £164). 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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Milton Keynes

Deal

Northampton

Gatwick

Slough

Luton

Wembley

Crawley

Eastbourne

Ilford

Hayes

Ipswich

Folkestone

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Watford

Winchester

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Browse thousands of different options on Cheapflights for your next trip

Top 10 airlines flying from California to Heathrow

Airline	Cheapest	Average	Flexibility	On-time
Scandinavian Airlines	Cheapest£300	Average£440	FlexibilityNo cancel fee	On-time77%	Search Scandinavian Airlines flights
Lufthansa	Cheapest£315	Average£668	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights
TAP AIR PORTUGAL	Cheapest£386	Average£402	FlexibilityNo cancel fee	On-timeN/A	Search TAP AIR PORTUGAL flights
Air France	Cheapest£388	Average£553	FlexibilityNo cancel fee	On-time77%	Search Air France flights
Virgin Atlantic	Cheapest£402	Average£626	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights
Finnair	Cheapest£414	Average£722	FlexibilityNo cancel fee	On-time76%	Search Finnair flights
Iberia	Cheapest£422	Average£535	FlexibilityNo cancel fee	On-time77%	Search Iberia flights
British Airways	Cheapest£425	Average£606	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
Air Canada	Cheapest£429	Average£604	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights
KLM	Cheapest£437	Average£497	FlexibilityNo cancel fee	On-time75%	Search KLM flights

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How does Cheapflights help users find flights from California to Heathrow?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Heathrow from California today with Cheapflights!

Why should you use Cheapflights to find cheap flight tickets from California to Heathrow?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from California to Heathrow.

Can Cheapflights find flights from California to Heathrow with no change fees?

Yes! Cheapflights helps users easily find flights from California to Heathrow with no change fees.

Can Cheapflights notify me if prices for flights from California to Heathrow become cheaper?

Of course! You can now track prices for flights from California to Heathrow and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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Cheap flights from California to London Heathrow Airport from £160

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 27/7. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from California to Heathrow

Keep the following information in mind while searching for California to Heathrow flight deals. Data was last updated 11 July 2025.

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Find flight deals from California to Heathrow

Cheapest flights from California to HeathrowExplore the most affordable flight options available from California to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 11 July 2025.

Explore the most affordable flight options available from California to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 11 July 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from California to London Heathrow Airport that are best for you.

Best time to book a flight from California to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from California with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from California to London Heathrow Airport

What is the cheapest month to book a flight from California to London Heathrow Airport?

What is the cheapest time of day to fly from CA to LHR?

Find hourly flight availability from California to Heathrow. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 11 July 2025.

Weekly flight availability from California to London Heathrow Airport

Explore weekly flight availability from California to Heathrow. 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 11 July 2025.

How much does it cost for a return flight from California to London Heathrow Airport?

Reviews of airlines servicing Heathrow

Read through reviews of airlines operating flights from California to London Heathrow Airport, such as Delta, KLM, andAustrian Airlines. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from California to Heathrow. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What are the cheapest airlines to fly from California to London Heathrow Airport one-way?

What are the most popular routes from California to London Heathrow Airport?

What are the most reliable airlines from California to London Heathrow Airport?

What are the cheapest flights from California to London Heathrow Airport?

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

How can I find direct flights from California to Heathrow?

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

What is the cheapest month to book a flight from California to London Heathrow Airport?

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Alternative routes for California to Heathrow

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Top 10 airlines flying from California to Heathrow

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Cheapest flights from California to Heathrow
Explore the most affordable flight options available from California to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 11 July 2025.