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Cheap flights from Northern Ireland to California from £389

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 28/4. Fares are subject to change and may not be available on all flights or dates of travel.
BFS — LAX
6 Feb — 13 Feb1
1 adult
1 adult, Economy, 0 bags

Cheap 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 7 January 2026.

Round-trip from

£411

One-way from

£389

Popular in

December

Cheapest in

June

Average price

£469
11/3-25/3
  • 11/3-25/3
  • 3 total stops
  • 44h 35m total
  • Northern Ireland to California
Search Deals
28/4
  • 28/4
  • 1 total stop
  • 24h 00m total
  • Northern Ireland to California
Search Deals
Highest demand for flights based on searches. 15% potential increase in price (£74 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

Find 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 7 January 2026.

Wed 11/307:00BFS - LAX
1 stop21h 40mMultiple Airlines
Wed 25/313:40LAX - BFS
2 stops22h 55mMultiple Airlines
Deal found 5/1£411
Wed 11/306:35BHD - LAX
1 stop14h 55mBritish Airways
Wed 25/322:00LAX - BHD
1 stop14h 10mBritish Airways
Deal found 5/1£471
Thu 5/209:05BHD - LAX
1 stop14h 45mBritish Airways
Mon 9/217:30LAX - BHD
1 stop14h 35mBritish Airways
Deal found 4/1£472
Tue 23/613:40BHD - LAX
1 stop14h 35mBritish Airways
Wed 8/716:30LAX - BHD
2 stops18h 10mBritish Airways
Deal found 3/1£475
Wed 11/206:35BHD - ONT
2 stops39h 14mBritish Airways
Sun 15/206:00ONT - BHD
2 stops26h 50mBritish Airways
Deal found 5/1£477
Sun 8/309:10BHD - LAX
1 stop19h 15mAmerican Airlines
Sat 28/320:25LAX - BHD
1 stop14h 50mAmerican Airlines
Deal found 5/1£487
Fri 30/106:45BHD - SNA
2 stops23h 16mBritish Airways
Tue 3/216:23SNA - BHD
2 stops16h 22mBritish Airways
Deal found 5/1£491
Wed 11/309:15BHD - ONT
2 stops21h 44mAmerican Airlines
Wed 25/310:56ONT - BHD
2 stops16h 19mAmerican Airlines
Deal found 5/1£492
Sun 8/309:10BHD - LAX
1 stop14h 40mBritish Airways
Fri 27/322:00LAX - BHD
1 stop28h 05mBritish Airways
Deal found 5/1£497
Mon 2/209:15BHD - SFO
1 stop13h 45mBritish Airways
Mon 9/215:50SFO - BHD
2 stops16h 15mBritish Airways
Deal found 4/1£498
Wed 11/314:15BFS - SFO
2 stops34h 15mMultiple Airlines
Wed 25/320:25SFO - BFS
2 stops18h 55mMultiple Airlines
Deal found 5/1£503
Thu 19/214:25BFS - SFO
2 stops34h 05mMultiple Airlines
Thu 26/219:25SFO - BFS
2 stops18h 55mMultiple Airlines
Deal found 5/1£505

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 7 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

BFS - LAX

BFSLAX

Belfast Intl

Wed 11/3

07:00-21:40

1 stop21h 40m

Los Angeles

Wed 25/3

13:40-19:35

2 stops22h 55m

£411

BelfastLos Angeles

BHD - LAX

BHDLAX

Belfast City

Wed 4/3

12:25-18:30

1 stop14h 05m

Los Angeles

Sun 8/3

08:05-10:20

2 stops19h 15m

£472

BelfastLos Angeles

BHD - LAX

BHDLAX

Belfast City

Wed 11/3

09:15-16:50

1 stop14h 35m

Los Angeles

Wed 25/3

16:42-16:35

2 stops16h 53m

£472

BelfastLos Angeles

BHD - LAX

BHDLAX

Belfast City

Thu 5/2

09:05-18:30

1 stop17h 25m

Los Angeles

Mon 9/2

21:00-20:15

1 stop15h 15m

£472

BelfastLos Angeles

BHD - LAX

BHDLAX

Belfast City

Tue 23/6

13:40-20:15

1 stop14h 35m

Los Angeles

Wed 8/7

16:30-18:40

2 stops18h 10m

£475

BelfastOntario

BHD - ONT

BHDONT

Belfast City

Thu 12/2

11:05-22:29

2 stops19h 24m

Ontario

Mon 16/2

14:39-16:05

2 stops17h 26m

£477

BelfastOntario

BHD - ONT

BHDONT

Belfast City

Wed 11/2

19:25-23:59

2 stops36h 34m

Ontario

Sun 15/2

23:58-16:05

2 stops32h 07m

£477

BelfastSanta Ana

BHD - SNA

BHDSNA

Belfast City

Fri 30/1

06:45-22:01

2 stops23h 16m

Santa Ana J. Wayne/Orange Cnty

Tue 3/2

15:15-16:45

2 stops17h 30m

£491

BelfastOntario

BHD - ONT

BHDONT

Belfast City

Wed 11/3

09:15-23:59

2 stops21h 44m

Ontario

Wed 25/3

10:56-10:15

2 stops16h 19m

£492

BelfastSan Francisco

BFS - SFO

BFSSFO

Belfast Intl

Wed 11/3

14:15-17:30

2 stops34h 15m

San Francisco

Wed 25/3

20:25-22:20

2 stops18h 55m

£503

Flights are sorted by cheapest return flights first.

Deals found on 6/1

Showing 1-10 of 32 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 £353). Flying from Northern Ireland to California in December is currently the most expensive (average of £499). 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 7 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
1,434 reviews
Check prices

Entertainment

7.1

Food

7.2

Crew

8.4

Boarding

7.8

Overall

7.7

Comfort

7.6

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle
KLM
7.7
Good
1,434 reviews
KLM
7.7
Good
1,434 reviews
Check prices

Entertainment

7.1

Food

7.2

Crew

8.4

Boarding

7.8

Overall

7.7

Comfort

7.6

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle
American Airlines
7.2
Good
11,090 reviews
KLM
7.7
Good
1,434 reviews
Check prices

Entertainment

7.1

Food

7.2

Crew

8.4

Boarding

7.8

Overall

7.7

Comfort

7.6

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle
British Airways
6.7
Okay
7,657 reviews
KLM
7.7
Good
1,434 reviews
Check prices

Entertainment

7.1

Food

7.2

Crew

8.4

Boarding

7.8

Overall

7.7

Comfort

7.6

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle

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 14h 05m. Fly via British Airways, KLM, or Virgin Atlantic to get the fastest option. Northern Ireland and California are separated by a distance of 5128 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 £353). Flying from Northern Ireland to California in December is currently the most expensive (average of £499). 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

See prices for flight routes from nearby airports that may be better suited for you.
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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 7 January 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£365Average£542FlexibilityNo cancel feeOn-time70%
Search British Airways flights
American AirlinesCheapest£468Average£519FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
KLMCheapest£501Average£607FlexibilityNo 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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