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Cheap flights from California to Northern Ireland from £263

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 13/9. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — BFS
31 Aug — 7 Sep1
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 1 August 2026.

Wed 14/1019:30
SFO
-
BHD
1 stop16h 20m
British Airways
Wed 4/1111:25
BHD
-
SFO
1 stop15h 20m
British Airways
Deal found 29/7£644
Tue 1/1217:25
SFO
-
BHD
1 stop13h 25m
British Airways
Fri 4/1211:30
BHD
-
SFO
1 stop15h 15m
British Airways
Deal found 29/7£648
Mon 21/907:30
LAX
-
BFS
3 stops30h 30m
Multiple Airlines
Thu 24/909:00
BFS
-
LAX
3 stops31h 20m
Multiple Airlines
Deal found 28/7£652
Sun 25/1016:29
ONT
-
BHD
2 stops17h 21m
British Airways
Sat 14/1111:35
BHD
-
ONT
2 stops19h 22m
British Airways
Deal found 27/7£656
Wed 28/1019:25
LAX
-
BHD
1 stop29h 05m
British Airways
Mon 2/1117:45
BHD
-
LAX
1 stop29h 35m
British Airways
Deal found 31/7£664
Sun 25/1016:29
ONT
-
BHD
2 stops17h 21m
British Airways
Fri 13/1106:45
BHD
-
ONT
2 stops20h 02m
British Airways
Deal found 27/7£672
Wed 14/1014:12
SFO
-
BHD
2 stops17h 28m
American Airlines
Wed 4/1112:25
BHD
-
SFO
2 stops19h 34m
American Airlines
Deal found 29/7£673
Wed 28/1012:15
LAX
-
BHD
2 stops21h 35m
Delta
Mon 2/1117:20
BHD
-
LAX
1 stop26h 25m
Delta
Deal found 31/7£673
Mon 28/915:50
LAX
-
BHD
1 stop13h 05m
British Airways
Thu 8/1009:35
BHD
-
LAX
1 stop16h 50m
British Airways
Deal found 29/7£676
Wed 26/806:13
SFO
-
BHD
2 stops19h 07m
Delta
Wed 2/917:30
BHD
-
SFO
1 stop26h 15m
Delta
Deal found 29/7£681
Sun 27/920:55
LAX
-
BHD
1 stop15h 40m
British Airways
Thu 8/1006:30
BHD
-
LAX
1 stop19h 55m
British Airways
Deal found 29/7£681
Thu 15/1013:00
SFO
-
BFS
2 stops25h 50m
Multiple Airlines
Sat 31/1023:00
BFS
-
SFO
3 stops47h 45m
Multiple Airlines
Deal found 1/8£684

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 1 August 2026.

Round-trip from

£644

One-way from

£263
British Airways
  • British Airways
  • 14/10-4/11
  • 2 total stops
  • 31h 40m total
  • California to Northern Ireland
Search Deals
13/9
  • 13/9
  • 3 total stops
  • 53h 15m total
  • California to Northern Ireland
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 1 August 2026.
Use the filters below to find and compare flights from California to Northern Ireland that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight
Fastest return journey

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Tue 1/12

17:25-14:50

1 stop13h 25m

Belfast City

Fri 4/12

11:30-18:45

1 stop15h 15m

£647

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Wed 14/10

12:59-13:35

2 stops16h 36m

Belfast City

Wed 4/11

12:25-18:45

1 stop14h 20m

£647

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Sun 15/11

20:35-20:15

1 stop15h 40m

Belfast City

Thu 19/11

06:35-14:55

1 stop16h 20m

£648

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Mon 16/11

17:25-18:35

1 stop17h 10m

Belfast City

Fri 20/11

08:45-18:45

1 stop18h 00m

£648

Los AngelesBelfast

LAX - BHD

LAXBHD

Los Angeles Los Angeles

Sun 24/1

15:30-13:55

1 stop14h 25m

Belfast City

Wed 27/1

17:40-15:50

1 stop30h 10m

£663

Los AngelesBelfast

LAX - BHD

LAXBHD

Los Angeles Los Angeles

Sun 17/1

15:30-13:55

1 stop14h 25m

Belfast City

Thu 21/1

15:25-13:25

1 stop30h 00m

£664

Los AngelesBelfast

LAX - BFS

LAXBFS

Los Angeles Los Angeles

Mon 21/9

07:30-23:20

3 stops31h 50m

Belfast Intl

Thu 24/9

09:00-08:20

3 stops31h 20m

£673

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Wed 26/8

06:13-09:20

2 stops19h 07m

Belfast City

Wed 2/9

17:30-11:45

1 stop26h 15m

£681

San FranciscoBelfast

SFO - BFS

SFOBFS

San Francisco

Thu 15/10

13:00-22:50

2 stops25h 50m

Belfast Intl

Sat 31/10

23:00-15:45

3 stops47h 45m

£684

Los AngelesBelfast

LAX - BFS

LAXBFS

Los Angeles Los Angeles

Sun 27/9

10:20-20:15

2 stops25h 55m

Belfast Intl

Thu 8/10

06:10-08:20

2 stops34h 10m

£692

Flights are sorted by cheapest return flights first.

Deals found on 30/7

Showing 1-10 of 51 resultsSorted by cheapest first
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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

No data available for this route at this time. Please check back soon.

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 13h 25m. California and Northern Ireland are separated by a distance of 5038 mi. This flight may include one or multiple stops.

  • 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.

See more FAQs

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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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Dulles Intl to London City flights
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Boston to Stansted flights
Baltimore to Gatwick flights
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Los Angeles to Stansted flights
George Bush Intcntl to Heathrow flights
O'Hare Intl to Gatwick flights
Reagan-National to Gatwick flights
San Francisco to Gatwick flights
Boston to Edinburgh flights
Los Angeles to London City flights
San Francisco to London City flights
Orlando to Gatwick flights
Raleigh to Heathrow flights
O'Hare Intl to London City flights
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San Francisco to Stansted flights

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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.

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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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