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Cheap flights from California to Belfast from £131

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 8/2. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — BHD
8 Feb — 15 Feb1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from California to Belfast

Keep the following information in mind while searching for California to Belfast flight deals. Data was last updated 9 January 2026.

Round-trip from

£437

One-way from

£131

Popular in

June

Cheapest in

October

Average price

£521
British Airways
  • British Airways
  • 15/4-20/4
  • 3 total stops
  • 46h 57m total
  • California to Belfast
Search Deals
British Airways
  • British Airways
  • 8/2
  • 2 total stops
  • 20h 00m total
  • California to Belfast
Search Deals
Highest demand for flights based on searches. 16% potential increase in price (£102 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£22 potential savings vs. average return price).
Search Deals
Average for round-trip flights in January 2026
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Find flight deals from California to Belfast

Enter your travel dates to find the best prices.

Cheapest flights from California to Belfast
Explore the most affordable flight options available from California to Belfast. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 9 January 2026.

Wed 15/413:28LAX - BHD
2 stops16h 02mBritish Airways
Mon 20/419:30BHD - LAX
1 stop30h 55mBritish Airways
Deal found 6/1£437
Wed 25/218:00LAX - BHD
1 stop14h 35mBritish Airways
Sun 1/306:30BHD - LAX
1 stop15h 00mBritish Airways
Deal found 6/1£448
Wed 4/317:30SFO - BHD
1 stop15h 05mBritish Airways
Sun 8/306:30BHD - SFO
1 stop16h 30mBritish Airways
Deal found 6/1£466
Wed 25/217:30SFO - BHD
1 stop15h 05mBritish Airways
Sun 1/309:10BHD - SFO
1 stop13h 50mBritish Airways
Deal found 8/1£467
Fri 27/214:27SFO - BHD
2 stops20h 48mBritish Airways
Tue 3/308:45BHD - SFO
1 stop14h 15mBritish Airways
Deal found 6/1£469
Tue 14/413:28LAX - BHD
2 stops17h 52mBritish Airways
Sun 19/420:05BHD - LAX
1 stop26h 50mBritish Airways
Deal found 8/1£475
Fri 23/119:25LAX - BHD
1 stop13h 50mAmerican Airlines
Tue 3/208:45BHD - LAX
1 stop14h 35mAmerican Airlines
Deal found 8/1£475
Wed 4/308:40LAX - BHD
2 stops17h 35mBritish Airways
Sun 8/312:10BHD - LAX
2 stops19h 06mBritish Airways
Deal found 6/1£477
Wed 25/206:00ONT - BHD
2 stops26h 35mBritish Airways
Sun 1/310:40BHD - ONT
2 stops19h 27mBritish Airways
Deal found 6/1£477
Wed 4/307:45SNA - BHD
2 stops18h 30mBritish Airways
Sun 8/306:30BHD - SNA
2 stops22h 09mBritish Airways
Deal found 6/1£477
Fri 27/214:07SJC - BHD
2 stops19h 08mBritish Airways
Tue 3/317:15BHD - SJC
2 stops37h 16mBritish Airways
Deal found 8/1£478
Tue 14/413:23SNA - BHD
2 stops17h 57mBritish Airways
Sun 19/420:05BHD - SNA
2 stops34h 02mBritish Airways
Deal found 8/1£481

Cheapflights Fare Finder

 
Customise your flight search to find flights from California to Belfast 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 858,174 searches. Data last updated 9 January 2026.
Use the filters below to find and compare flights from California to Belfast that are best for you.

Fly from

California

Fly to

Belfast

Route

Depart

Return

Price

Los AngelesBelfast

LAX - BHD

LAXBHD

Los Angeles

Wed 15/4

13:28-13:30

2 stops16h 02m

Belfast City

Mon 20/4

19:30-18:25

1 stop30h 55m

£437

Los AngelesBelfast

LAX - BHD

LAXBHD

Los Angeles

Wed 4/3

15:30-14:15

1 stop14h 45m

Belfast City

Sun 8/3

09:10-15:50

1 stop14h 40m

£448

Los AngelesBelfast

LAX - BHD

LAXBHD

Los Angeles

Wed 25/2

18:00-16:35

1 stop14h 35m

Belfast City

Sun 1/3

06:30-13:30

1 stop15h 00m

£448

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Wed 4/3

17:30-16:35

1 stop15h 05m

Belfast City

Sun 8/3

06:30-15:00

1 stop16h 30m

£466

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Wed 25/2

17:30-16:35

1 stop15h 05m

Belfast City

Sun 1/3

12:10-15:00

1 stop34h 50m

£466

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Fri 27/2

17:30-19:15

1 stop17h 45m

Belfast City

Tue 3/3

06:35-18:45

1 stop20h 10m

£466

Los AngelesBelfast

LAX - BHD

LAXBHD

Los Angeles

Tue 14/4

13:28-15:20

2 stops17h 52m

Belfast City

Sun 19/4

20:05-14:55

1 stop26h 50m

£475

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Wed 4/3

07:00-16:35

2 stops25h 35m

Belfast City

Sun 8/3

06:30-21:07

2 stops22h 37m

£477

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Wed 25/2

06:00-16:35

2 stops26h 35m

Belfast City

Sun 1/3

10:40-22:07

2 stops19h 27m

£477

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Tue 14/4

16:52-19:40

2 stops18h 48m

Belfast City

Sun 19/4

13:10-21:59

2 stops16h 49m

£477

Flights are sorted by cheapest return flights first.

Deals found on 7/1

Showing 1-10 of 54 results
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Best time to book a flight from California to Belfast

Have a flexible travel schedule? Discover the best time to fly to Belfast 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 Belfast

What is the cheapest month to book a flight from California to Belfast?

Currently, March is the cheapest month in which you can book a flight from California to Belfast (average of £435). Flying from California to Belfast in June is currently the most expensive (average of £690). 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.

Related info for your journey

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

  • How long is the flight from California to Belfast?

    For as low as £437, British Airways can have you in Belfast from California in 16h 02m. The distance from California to Belfast is about 5128 mi.

  • What are the most popular routes from California to Belfast?

    While some choose either Los Angeles - Belfast City or Ontario - Belfast City, Los Angeles - Belfast Intl is the most popular route from California to Belfast.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from California to Belfast 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 Belfast?

    Currently, March is the cheapest month in which you can book a flight from California to Belfast (average of £435). Flying from California to Belfast in June is currently the most expensive (average of £690). 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

Browse thousands of different options on Cheapflights for your next trip

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Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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

Deals for California to Belfast flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

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

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 Belfast.

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

Certainly. Search results for flights to Belfast from California shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

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

Of course! You can now track prices for flights from California to Belfast 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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