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Cheap flights from Northern Ireland to California from £275

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 29/4. Fares are subject to change and may not be available on all flights or dates of travel.
BFS — LAX
27 Feb — 6 Mar1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Northern Ireland to California

Enter your travel dates to find the best prices.

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

Tue 3/215:05
BHD
-
LAX
1 stop32h 15m
British Airways
Tue 10/206:00
LAX
-
BHD
2 stops20h 30m
British Airways
Deal found 25/1£449
Tue 3/206:35
BHD
-
LAX
2 stops20h 17m
Multiple Airlines
Tue 10/206:00
LAX
-
BHD
2 stops20h 30m
Multiple Airlines
Deal found 25/1£454
Tue 3/217:20
BHD
-
LAX
1 stop26h 25m
KLM
Tue 10/213:45
LAX
-
BHD
1 stop19h 05m
KLM
Deal found 25/1£470
Wed 4/306:35
BHD
-
LAX
1 stop17h 15m
British Airways
Sun 8/322:00
LAX
-
BHD
1 stop15h 15m
British Airways
Deal found 25/1£472
Mon 29/609:40
BHD
-
LAX
1 stop16h 45m
American Airlines
Mon 20/715:15
LAX
-
BHD
2 stops16h 15m
American Airlines
Deal found 27/1£494
Wed 11/219:25
BHD
-
ONT
2 stops33h 59m
British Airways
Sun 15/214:39
ONT
-
BHD
2 stops34h 26m
British Airways
Deal found 25/1£497
Mon 23/214:15
BFS
-
SFO
2 stops34h 15m
Multiple Airlines
Mon 2/319:25
SFO
-
BFS
2 stops17h 45m
Multiple Airlines
Deal found 26/1£499
Tue 30/606:30
BHD
-
LAX
1 stop19h 55m
American Airlines
Thu 23/716:25
LAX
-
BHD
1 stop19h 00m
American Airlines
Deal found 27/1£502
Mon 23/217:20
BHD
-
SFO
1 stop26h 30m
Multiple Airlines
Mon 2/313:55
SFO
-
BHD
1 stop18h 50m
Multiple Airlines
Deal found 26/1£502
Wed 1/417:30
BHD
-
LAX
2 stops30h 04m
Virgin Atlantic
Sun 5/413:50
LAX
-
BHD
1 stop19h 05m
Virgin Atlantic
Deal found 27/1£502
Tue 3/217:15
BHD
-
SNA
2 stops36h 46m
British Airways
Sat 7/215:15
SNA
-
BHD
2 stops38h 40m
British Airways
Deal found 25/1£504
Fri 6/219:35
BHD
-
LAX
1 stop25h 55m
British Airways
Tue 10/207:15
LAX
-
BHD
2 stops19h 15m
British Airways
Deal found 26/1£506

Find flight deals from Northern Ireland to California

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

Round-trip from

£472

One-way from

£275

Popular in

December

Cheapest in

June

Average price

£462
British Airways
  • British Airways
  • 4/3-8/3
  • 2 total stops
  • 30h 10m total
  • Northern Ireland to California
Search Deals
29/4
  • 29/4
  • 2 total stops
  • 33h 25m total
  • Northern Ireland to California
Search Deals
Highest demand for flights based on searches. 15% potential increase in price (£73 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (£23 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 Northern Ireland to California 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 Northern Ireland to California that are best for you.

Fly from

Northern Ireland

Fly to

California

Route

Depart

Return

Price

BelfastLos Angeles

BHD - LAX

BHDLAX

Belfast City

Wed 4/3

19:25-13:30

1 stop26h 05m

Los Angeles

Sun 8/3

22:00-20:15

1 stop15h 15m

£472

BelfastLos Angeles

BHD - LAX

BHDLAX

Belfast City

Wed 1/7

11:35-18:25

1 stop14h 50m

Los Angeles

Wed 22/7

16:43-18:45

2 stops18h 02m

£494

BelfastLos Angeles

BHD - LAX

BHDLAX

Belfast City

Mon 29/6

09:40-18:25

1 stop16h 45m

Los Angeles

Wed 22/7

20:55-19:50

1 stop14h 55m

£494

BelfastLos Angeles

BHD - LAX

BHDLAX

Belfast City

Tue 30/6

06:30-13:45

1 stop15h 15m

Los Angeles

Sun 26/7

13:07-17:40

2 stops20h 33m

£494

BelfastLos Angeles

BHD - LAX

BHDLAX

Belfast City

Tue 30/6

06:30-14:55

1 stop16h 25m

Los Angeles

Fri 24/7

20:55-18:10

1 stop13h 15m

£494

BelfastLos Angeles

BHD - LAX

BHDLAX

Belfast City

Wed 1/7

10:05-18:25

1 stop16h 20m

Los Angeles

Thu 23/7

16:43-19:25

2 stops18h 42m

£494

BelfastLos Angeles

BHD - LAX

BHDLAX

Belfast City

Fri 3/7

06:30-18:25

1 stop19h 55m

Los Angeles

Sat 25/7

16:43-18:15

2 stops17h 32m

£494

BelfastOntario

BHD - ONT

BHDONT

Belfast City

Thu 12/2

06:35-10:06

2 stops35h 31m

Ontario

Mon 16/2

07:00-18:35

2 stops27h 35m

£497

BelfastOntario

BHD - ONT

BHDONT

Belfast City

Wed 11/2

19:25-21:24

2 stops33h 59m

Ontario

Sun 15/2

14:39-09:05

2 stops34h 26m

£497

BelfastSan Francisco

BFS - SFO

BFSSFO

Belfast Intl

Mon 23/2

14:15-16:30

2 stops34h 15m

San Francisco

Mon 2/3

19:25-21:10

2 stops17h 45m

£499

Flights are sorted by cheapest return flights first.

Deals found on 26/1

Showing 1-10 of 43 results
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Best time to book a flight from Northern Ireland to California

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

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

Currently, November is the cheapest month in which you can book a flight from Northern Ireland to California (average of £347). Flying from Northern Ireland to California in December is currently the most expensive (average of £491). 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.

Reviews of airlines servicing California

Get insights into the airlines that provide service to California. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to California. Reviews last updated 28 January 2026.
Read through reviews of airlines operating flights from Northern Ireland to California, such as KLM, American Airlines, andBritish Airways. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.7
Good
1,443 reviews
Check prices

Crew

8.4

Comfort

7.6

Entertainment

7.1

Overall

7.7

Boarding

7.8

Food

7.3

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.
KLM
7.7
Good
1,443 reviews
KLM
7.7
Good
1,443 reviews
Check prices

Crew

8.4

Comfort

7.6

Entertainment

7.1

Overall

7.7

Boarding

7.8

Food

7.3

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.
American Airlines
7.2
Good
11,201 reviews
KLM
7.7
Good
1,443 reviews
Check prices

Crew

8.4

Comfort

7.6

Entertainment

7.1

Overall

7.7

Boarding

7.8

Food

7.3

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.
British Airways
6.7
Okay
7,704 reviews
KLM
7.7
Good
1,443 reviews
Check prices

Crew

8.4

Comfort

7.6

Entertainment

7.1

Overall

7.7

Boarding

7.8

Food

7.3

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.

Related info for your journey

Find useful and relevant information for your journey from Northern Ireland to California. 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 Northern Ireland to California?

    There are many flights that can get you from Northern Ireland to California in 18h 20m. Fly via British Airways or American Airlines to get the fastest option. Northern Ireland and California are separated by a distance of 4902 mi. This flight may include one or multiple stops.

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

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

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

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

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

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

    Currently, November is the cheapest month in which you can book a flight from Northern Ireland to California (average of £347). Flying from Northern Ireland to California in December is currently the most expensive (average of £491). 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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Alternative routes for Northern Ireland to California

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Top 3 airlines flying from Northern Ireland to California

Discover the top 3 airlines that operate flights from Northern Ireland to California. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 28 January 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£360Average£517FlexibilityNo cancel feeOn-time70%
Search British Airways flights
American AirlinesCheapest£461Average£511FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
KLMCheapest£494Average£598FlexibilityNo cancel feeOn-time75%
Search KLM flights

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 Northern Ireland to California?

Cheapflights makes it easy to find Northern Ireland to California 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 Northern Ireland to California?

Cheapflights simply makes it quick and affordable to book flights from Northern Ireland to California by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

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

Need flexible booking options for your flight to California from Northern Ireland? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

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

Yes! Start tracking prices for Northern Ireland to California flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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