Cheap flights from California to Belfast from £214

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 10/11. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — BHD
17 Oct — 24 Oct1
1 adult
1 adult, Economy

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 17 September 2025.

Round-trip from

£425

One-way from

£214

Popular in

June

Cheapest in

November

Average price

£677
Finnair
  • Finnair
  • 15/3-26/3
  • 2 total stops
  • 31h 45m total
  • California to Belfast
10/11
  • 10/11
  • 3 total stops
  • 55h 15m total
  • California to Belfast
Highest demand for flights based on searches. 18% potential increase in price (£115 potential increase over avg. return price).
Cheapest flight prices on average. 4% potential price decrease (£22 potential savings vs. average return price).
Average for round-trip flights in September 2025

Find flight deals from California to Belfast

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 17 September 2025.

Wed 15/1013:25LAX - BHD
1 stop14h 30mAmerican Airlines
Thu 23/1006:35BHD - LAX
1 stop21h 40mAmerican Airlines
Deal found 15/9£425
Tue 2/1216:47ONT - BHD
2 stops15h 58mBritish Airways
Tue 9/1206:35BHD - ONT
2 stops23h 53mBritish Airways
Deal found 16/9£438
Tue 2/1200:55LAX - BHD
2 stops25h 20mBritish Airways
Wed 10/1212:25BHD - LAX
1 stop14h 05mBritish Airways
Deal found 16/9£451
Thu 16/1021:30LAX - BHD
1 stop13h 50mAmerican Airlines
Thu 23/1006:35BHD - LAX
1 stop21h 40mAmerican Airlines
Deal found 15/9£463
Wed 24/913:45SFO - BHD
1 stop23h 30mDelta
Mon 6/1017:25BHD - SFO
1 stop26h 20mDelta
Deal found 16/9£463
Mon 3/1108:35LAX - BHD
2 stops18h 05mAmerican Airlines
Sat 15/1109:15BHD - LAX
1 stop19h 10mAmerican Airlines
Deal found 15/9£466
Thu 30/1022:00LAX - BHD
1 stop15h 30mMultiple Airlines
Thu 6/1111:05BHD - LAX
2 stops19h 03mMultiple Airlines
Deal found 15/9£471
Mon 20/1014:10SFO - BHD
2 stops17h 30mAmerican Airlines
Fri 31/1006:45BHD - SFO
2 stops19h 23mAmerican Airlines
Deal found 16/9£473
Sun 26/1005:55SJC - BHD
2 stops32h 05mDelta
Fri 7/1106:30BHD - SJC
2 stops23h 38mDelta
Deal found 16/9£474
Thu 4/1216:25SNA - BHD
2 stops17h 35mBritish Airways
Thu 11/1211:05BHD - SNA
2 stops18h 42mBritish Airways
Deal found 16/9£474
Wed 3/1207:00ONT - BHD
2 stops19h 15mMultiple Airlines
Wed 10/1211:25BHD - ONT
2 stops19h 03mMultiple Airlines
Deal found 16/9£485
Tue 2/1215:07SNA - BHD
2 stops17h 38mBritish Airways
Tue 9/1210:00BHD - SNA
2 stops19h 41mBritish Airways
Deal found 16/9£485

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 17 September 2025.
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

Sun 15/3

22:00-18:40

1 stop13h 40m

Belfast City

Fri 27/3

11:30-19:25

1 stop14h 55m

£428

Los AngelesBelfast

LAX - BHD

LAXBHD

Los Angeles

Sun 15/3

19:00-16:50

1 stop14h 50m

Belfast City

Tue 24/3

11:25-19:30

1 stop15h 05m

£428

Los AngelesBelfast

LAX - BHD

LAXBHD

Los Angeles

Sun 15/3

19:00-16:50

1 stop14h 50m

Belfast City

Wed 25/3

17:40-14:30

1 stop27h 50m

£428

Los AngelesBelfast

LAX - BHD

LAXBHD

Los Angeles

Wed 15/10

11:30-11:55

2 stops16h 25m

Belfast City

Thu 23/10

06:35-20:15

1 stop21h 40m

£429

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Tue 2/12

16:47-16:45

2 stops15h 58m

Belfast City

Tue 9/12

06:35-22:28

2 stops23h 53m

£438

Los AngelesBelfast

LAX - BHD

LAXBHD

Los Angeles

Tue 2/12

00:55-10:15

2 stops25h 20m

Belfast City

Wed 10/12

12:25-18:30

1 stop14h 05m

£451

Los AngelesBelfast

LAX - BHD

LAXBHD

Los Angeles

Fri 23/1

15:30-14:15

1 stop14h 45m

Belfast City

Tue 3/2

11:25-18:30

1 stop15h 05m

£461

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Mon 29/9

13:45-16:55

1 stop19h 10m

Belfast City

Mon 6/10

17:25-11:45

1 stop26h 20m

£463

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Mon 20/10

13:45-16:55

1 stop19h 10m

Belfast City

Fri 31/10

06:30-12:50

1 stop13h 20m

£463

Los AngelesBelfast

LAX - BHD

LAXBHD

Los Angeles

Fri 23/1

15:30-14:15

1 stop14h 45m

Belfast City

Tue 3/2

11:25-18:30

1 stop15h 05m

£463

Flights are sorted by cheapest return flights first.

Deals found on 14/9

Showing 1-10 of 41 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, January is the cheapest month in which you can book a flight from California to Belfast (average of £67). Flying from California to Belfast in July is currently the most expensive (average of £90). 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 BFS?

Find hourly flight availability from California to Belfast. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 17 September 2025.

When flying from California to Belfast, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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 £428, British Airways can have you in Belfast from California in 13h 40m. The distance from California to Belfast is about 5128 mi. This flight may include one or multiple stops.

  • What are the most popular routes 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, January is the cheapest month in which you can book a flight from California to Belfast (average of £67). Flying from California to Belfast in July is currently the most expensive (average of £90). 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.

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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.

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