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Cheap flights from Northern Ireland to California from £484

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 8/7. Fares are subject to change and may not be available on all flights or dates of travel.
BFS — LAX
7 May — 14 May1
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 7 April 2026.

Tue 5/512:40
BHD
-
SFO
2 stops19h 19m
British Airways
Tue 12/519:30
SFO
-
BHD
1 stop14h 05m
British Airways
Deal found 7/4£617
Sun 3/513:10
BHD
-
LAX
1 stop30h 20m
Finnair
Sun 10/520:50
LAX
-
BHD
1 stop32h 05m
Finnair
Deal found 4/4£647
Thu 10/920:35
BHD
-
ONT
2 stops34h 31m
British Airways
Mon 14/914:22
ONT
-
BHD
2 stops21h 03m
British Airways
Deal found 2/4£654
Wed 23/911:35
BHD
-
LAX
1 stop14h 45m
British Airways
Sun 27/923:50
LAX
-
BHD
2 stops29h 05m
British Airways
Deal found 1/4£656
Wed 19/811:35
BHD
-
SFO
1 stop13h 55m
British Airways
Thu 10/916:36
SFO
-
BHD
2 stops18h 49m
British Airways
Deal found 7/4£659
Thu 5/1106:35
BHD
-
SFO
1 stop16h 25m
British Airways
Mon 9/1120:40
SFO
-
BHD
1 stop15h 35m
British Airways
Deal found 5/4£662
Thu 1/1009:35
BHD
-
ONT
2 stops19h 33m
British Airways
Mon 5/1010:25
ONT
-
BHD
2 stops25h 00m
British Airways
Deal found 5/4£665
Sun 3/519:10
BHD
-
LAX
1 stop27h 40m
British Airways
Sun 10/521:36
LAX
-
BHD
2 stops25h 59m
British Airways
Deal found 4/4£666
Thu 24/920:35
BHD
-
LAX
1 stop22h 55m
British Airways
Mon 28/920:55
LAX
-
BHD
1 stop15h 40m
British Airways
Deal found 1/4£667
Thu 5/1111:05
BHD
-
LAX
1 stop17h 10m
British Airways
Mon 9/1118:00
LAX
-
BHD
1 stop14h 05m
British Airways
Deal found 5/4£675
Sun 3/515:50
BHD
-
LAX
1 stop27h 40m
Multiple Airlines
Sun 10/518:00
LAX
-
BHD
1 stop16h 45m
Multiple Airlines
Deal found 4/4£676
Fri 6/1111:30
BHD
-
LAX
2 stops20h 27m
British Airways
Tue 10/1108:35
LAX
-
BHD
2 stops18h 55m
British Airways
Deal found 5/4£679

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 7 April 2026.

Round-trip from

£617

One-way from

£484

Popular in

December

Cheapest in

June

Average price

£764
British Airways
  • British Airways
  • 5/5-12/5
  • 3 total stops
  • 33h 24m total
  • Northern Ireland to California
Search Deals
8/7
  • 8/7
  • 3 total stops
  • 41h 35m total
  • Northern Ireland to California
Search Deals
Highest demand for flights based on searches. 19% potential increase in price (£100 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease (£29 potential savings vs. average return price).
Search Deals
Average for round-trip flights in April 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 7 April 2026.
Use the filters below to find and compare flights from Northern Ireland to California that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

BelfastOntario

BHD - ONT

BHDONT

Belfast City

Thu 10/9

20:35-23:06

2 stops34h 31m

Ontario

Mon 14/9

14:22-19:25

2 stops21h 03m

£654

BelfastLos Angeles

BHD - LAX

BHDLAX

Belfast City

Wed 23/9

11:35-18:20

1 stop14h 45m

Los Angeles

Sun 27/9

23:50-12:55

2 stops29h 05m

£656

BelfastOntario

BHD - ONT

BHDONT

Belfast City

Thu 1/10

06:30-23:06

2 stops24h 36m

Ontario

Mon 5/10

13:31-19:25

2 stops21h 54m

£665

BelfastLos Angeles

BHD - LAX

BHDLAX

Belfast City

Sun 3/5

19:10-14:50

1 stop27h 40m

Los Angeles

Sun 10/5

21:36-07:35

2 stops25h 59m

£666

BelfastLos Angeles

BHD - LAX

BHDLAX

Belfast City

Sun 3/5

15:50-11:30

1 stop27h 40m

Los Angeles

Sun 10/5

18:00-18:45

1 stop16h 45m

£676

BelfastSanta Ana

BHD - SNA

BHDSNA

Belfast City

Fri 11/9

20:10-19:39

2 stops31h 29m

Santa Ana J. Wayne/Orange Cnty

Tue 15/9

11:42-19:40

2 stops23h 58m

£687

BelfastLos Angeles

BHD - LAX

BHDLAX

Belfast City

Thu 24/9

12:45-23:57

2 stops19h 12m

Los Angeles

Mon 28/9

09:36-12:55

2 stops19h 19m

£690

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Thu 10/9

09:35-13:50

1 stop36h 15m

San Francisco

Mon 14/9

11:35-15:30

2 stops19h 55m

£692

BelfastLos Angeles

BHD - LAX

BHDLAX

Belfast City

Sun 3/5

17:30-07:14

2 stops45h 44m

Los Angeles

Sun 10/5

15:26-09:20

2 stops57h 54m

£706

BelfastLos Angeles

BFS - LAX

BFSLAX

Belfast Intl

Sun 3/5

21:05-16:25

2 stops27h 20m

Los Angeles

Sun 10/5

14:00-20:20

2 stops22h 20m

£720

Flights are sorted by cheapest return flights first.

Deals found on 4/4

Showing 1-10 of 38 resultsSorted by cheapest first
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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 £361). Flying from Northern Ireland to California in April is currently the most expensive (average of £532). 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 April 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
1,490 reviews
Check prices

Boarding

7.8

Entertainment

7.1

Food

7.3

Crew

8.4

Comfort

7.6

Overall

7.7

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas
KLM
7.7
Good
1,490 reviews
KLM
7.7
Good
1,490 reviews
Check prices

Boarding

7.8

Entertainment

7.1

Food

7.3

Crew

8.4

Comfort

7.6

Overall

7.7

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas
American Airlines
7.1
Good
11,549 reviews
KLM
7.7
Good
1,490 reviews
Check prices

Boarding

7.8

Entertainment

7.1

Food

7.3

Crew

8.4

Comfort

7.6

Overall

7.7

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas
British Airways
6.7
Okay
7,857 reviews
KLM
7.7
Good
1,490 reviews
Check prices

Boarding

7.8

Entertainment

7.1

Food

7.3

Crew

8.4

Comfort

7.6

Overall

7.7

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas

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 31h 21m. Fly via British Airways or KLM 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 £361). Flying from Northern Ireland to California in April is currently the most expensive (average of £532). 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 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 April 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£393Average£557FlexibilityNo cancel feeOn-time70%
Search British Airways flights
American AirlinesCheapest£479Average£531FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
KLMCheapest£513Average£621FlexibilityNo 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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