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Cheap flights from California to Northern Ireland from £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 10/2. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — BFS
27 Feb — 6 Mar1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from California to Northern Ireland

Enter your travel dates to find the best prices.

Cheapest flights from California to Northern Ireland
Explore the most affordable flight options available from California to Northern Ireland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 28 January 2026.

Tue 24/215:30
LAX
-
BHD
1 stop15h 20m
British Airways
Tue 3/306:35
BHD
-
LAX
1 stop14h 55m
British Airways
Deal found 26/1£456
Wed 25/221:00
LAX
-
BHD
1 stop26h 30m
British Airways
Sun 1/306:30
BHD
-
LAX
1 stop20h 00m
British Airways
Deal found 26/1£463
Sun 22/306:21
SFO
-
BHD
2 stops20h 59m
British Airways
Tue 31/320:25
BHD
-
SFO
1 stop25h 25m
British Airways
Deal found 27/1£472
Sun 1/317:30
SFO
-
BHD
1 stop17h 10m
British Airways
Tue 17/310:00
BHD
-
SFO
1 stop16h 45m
British Airways
Deal found 27/1£473
Sun 15/306:21
SFO
-
BHD
2 stops20h 59m
British Airways
Tue 31/319:30
BHD
-
SFO
1 stop26h 20m
British Airways
Deal found 27/1£476
Wed 26/816:35
SFO
-
BHD
1 stop15h 05m
British Airways
Wed 2/920:35
BHD
-
SFO
1 stop25h 15m
British Airways
Deal found 26/1£479
Mon 16/321:40
SFO
-
BHD
1 stop13h 55m
British Airways
Tue 31/319:30
BHD
-
SFO
1 stop26h 20m
British Airways
Deal found 27/1£483
Tue 3/313:50
SFO
-
BHD
2 stops17h 00m
British Airways
Fri 13/306:45
BHD
-
SFO
1 stop16h 15m
British Airways
Deal found 27/1£486
Mon 16/314:55
SFO
-
BHD
1 stop23h 05m
Delta
Mon 30/317:30
BHD
-
SFO
1 stop26h 15m
Delta
Deal found 27/1£489
Sun 15/318:30
SFO
-
BHD
1 stop15h 20m
British Airways
Thu 2/409:35
BHD
-
SFO
1 stop16h 05m
British Airways
Deal found 27/1£490
Wed 4/306:21
SFO
-
BHD
2 stops19h 54m
British Airways
Sat 14/318:00
BHD
-
SFO
1 stop29h 00m
British Airways
Deal found 27/1£491
Tue 17/311:50
SFO
-
BHD
2 stops22h 00m
Delta
Mon 30/317:30
BHD
-
SFO
1 stop26h 15m
Delta
Deal found 27/1£492

Find flight deals from California to Northern Ireland

Keep the following information in mind while searching for California to Northern Ireland flight deals. Data was last updated 28 January 2026.

Round-trip from

£456

One-way from

£216

Popular in

June

Cheapest in

October

Average price

£510
British Airways
  • British Airways
  • 24/2-3/3
  • 2 total stops
  • 30h 15m total
  • California to Northern Ireland
Search Deals
10/2
  • 10/2
  • 3 total stops
  • 32h 35m total
  • California to Northern Ireland
Search Deals
Highest demand for flights based on searches. 16% potential increase in price (£97 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£21 potential savings vs. average return price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from California to Northern Ireland 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 28 January 2026.
Use the filters below to find and compare flights from California to Northern Ireland that are best for you.

Fly from

California

Fly to

Northern Ireland

Route

Depart

Return

Price

Los AngelesBelfast

LAX - BHD

LAXBHD

Los Angeles

Tue 24/2

15:30-14:50

1 stop15h 20m

Belfast City

Tue 3/3

06:35-13:30

1 stop14h 55m

£456

Los AngelesBelfast

LAX - BHD

LAXBHD

Los Angeles

Wed 4/3

21:00-07:30

1 stop26h 30m

Belfast City

Sun 8/3

12:10-19:30

1 stop14h 20m

£463

Los AngelesBelfast

LAX - BHD

LAXBHD

Los Angeles

Wed 25/2

21:00-07:30

1 stop26h 30m

Belfast City

Sun 1/3

10:40-18:30

1 stop15h 50m

£463

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Mon 2/3

20:40-20:15

1 stop15h 35m

Belfast City

Thu 12/3

10:40-16:00

1 stop36h 20m

£473

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Tue 3/3

17:30-14:50

1 stop13h 20m

Belfast City

Thu 12/3

20:00-16:00

1 stop27h 00m

£473

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Wed 4/3

17:30-16:35

1 stop15h 05m

Belfast City

Mon 16/3

19:25-16:00

1 stop27h 35m

£473

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Sun 1/3

17:30-16:50

1 stop15h 20m

Belfast City

Fri 13/3

06:45-16:00

1 stop16h 15m

£473

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Sun 1/3

17:30-16:50

1 stop15h 20m

Belfast City

Mon 16/3

19:25-16:00

1 stop27h 35m

£473

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Sun 1/3

17:30-18:40

1 stop17h 10m

Belfast City

Tue 17/3

10:00-19:45

1 stop16h 45m

£473

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Mon 2/3

20:40-18:35

1 stop13h 55m

Belfast City

Tue 17/3

10:00-19:45

1 stop16h 45m

£473

Flights are sorted by cheapest return flights first.

Deals found on 26/1

Showing 1-10 of 57 results
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Best time to book a flight from California to Northern Ireland

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

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

Currently, March is the cheapest month in which you can book a flight from California to Northern Ireland (average of £426). Flying from California to Northern Ireland in June is currently the most expensive (average of £675). 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 Northern Ireland. 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 Northern Ireland?

    Departing from California to Northern Ireland will take you 15h 20m. California and Northern Ireland are separated by a distance of 5128 mi.

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

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

  • How can I find direct flights from California to Northern Ireland?

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

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

    Yes. Cheapflights offers flight deals from California to Northern Ireland 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 Northern Ireland?

    Currently, March is the cheapest month in which you can book a flight from California to Northern Ireland (average of £426). Flying from California to Northern Ireland in June is currently the most expensive (average of £675). 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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Alternative routes for California to Northern Ireland

See prices for flight routes from nearby airports that may be better suited for you.
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Fly with Cheapflights

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How does Cheapflights help users find flights from California to Northern Ireland?

Cheapflights makes it easy to find California to Northern Ireland flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

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

Millions of users choose and trust Cheapflights to book the best flight deals from California to Northern Ireland for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

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

Users can book flights with no change fees policies with our dedicated filters. Book flights from California to Northern Ireland flexibly with Cheapflights today.

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

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