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$335+ Cheap flights from Northern Ireland to California

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 3/15. Fares are subject to change and may not be available on all flights or dates of travel.
BFS — LAX
Feb 19 — Feb 261
Thu 2/19
Thu 2/26
1 adult, Economy
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Cheap flight deals from Northern Ireland to California

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 January 20, 2026.

This Mytrip deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/22:15 pm
BFS
-
LAX
2 stops34h 20m
Multiple Airlines
Mon 3/98:10 pm
LAX
-
BFS
2 stops18h 00m
Multiple Airlines
Deal found 1/20$623
This TravelUp deal was found by Cheapflights users on 1/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/197:05 am
BHD
-
LAX
1 stop19h 20m
British Airways
Tue 9/223:45 pm
LAX
-
BHD
1 stop15h 35m
British Airways
Deal found 1/19$627
This British Airways deal was found by Cheapflights users on 1/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/411:25 am
BHD
-
LAX
1 stop15h 05m
British Airways
Sun 3/810:02 pm
LAX
-
BHD
2 stops26h 38m
British Airways
Deal found 1/18$636
This British Airways deal was found by Cheapflights users on 1/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/1112:25 pm
BHD
-
ONT
2 stops40h 59m
British Airways
Sun 2/1511:58 pm
ONT
-
BHD
2 stops32h 07m
British Airways
Deal found 1/18$660
This British Airways deal was found by Cheapflights users on 1/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/67:35 pm
BHD
-
LAX
1 stop28h 15m
British Airways
Tue 2/107:15 am
LAX
-
BHD
2 stops19h 15m
British Airways
Deal found 1/18$673
This British Airways deal was found by Cheapflights users on 1/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/308:45 am
BHD
-
SNA
2 stops21h 16m
British Airways
Tue 2/39:30 am
SNA
-
BHD
2 stops23h 15m
British Airways
Deal found 1/18$679
This British Airways deal was found by Cheapflights users on 1/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/137:35 pm
BHD
-
SFO
1 stop27h 25m
British Airways
Mon 3/1610:36 am
SFO
-
BHD
2 stops20h 39m
British Airways
Deal found 1/18$683
This British Airways deal was found by Cheapflights users on 1/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/248:10 pm
BHD
-
SFO
1 stop25h 40m
British Airways
Tue 4/284:35 pm
SFO
-
BHD
1 stop15h 50m
British Airways
Deal found 1/18$699
This TravelUp deal was found by Cheapflights users on 1/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/1111:25 am
BHD
-
LAS
2 stops18h 36m
British Airways
Sun 3/156:45 pm
LAS
-
BHD
2 stops16h 55m
British Airways
Deal found 1/19$744
This Trip.com deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/66:45 am
BHD
-
LAS
2 stops23h 46m
Multiple Airlines
Fri 3/1311:08 am
LAS
-
BHD
2 stops25h 07m
Multiple Airlines
Deal found 1/20$750
This British Airways deal was found by Cheapflights users on 1/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/208:45 am
BHD
-
LAS
1 stop18h 05m
British Airways
Tue 2/2410:00 am
LAS
-
BHD
2 stops20h 50m
British Airways
Deal found 1/18$764
This British Airways deal was found by Cheapflights users on 1/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/67:35 pm
BHD
-
LAS
2 stops30h 24m
British Airways
Tue 2/106:03 am
LAS
-
BHD
2 stops20h 27m
British Airways
Deal found 1/18$809

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 January 20, 2026.

Round-trip from

$623
(Mytrip)

One-way from

$335
(Kiwi.com)

Popular in

December

Cheapest in

June

Average price

$635
From Northern Ireland to California
Search Deals
One-way flight from Northern Ireland to California
Search Deals
Highest demand for flights based on searches. 15% potential increase in price ($139 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($42 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

Cheapflights Fare Finder

 
Customize 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 2,558,603 searches. Data last updated January 20, 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

Mon 3/2

2:15 pm-4:35 pm

2 stops34h 20m

Los Angeles

Mon 3/9

8:10 pm-9:10 pm

2 stops18h 00m

$623

BelfastLos Angeles

BHD - LAX

BHDLAX

Belfast City

Wed 3/4

11:25 am-6:30 pm

1 stop15h 05m

Los Angeles

Sun 3/8

10:02 pm-7:40 am

2 stops26h 38m

$636

BelfastOntario

BHD - ONT

BHDONT

Belfast City

Thu 2/12

11:05 am-10:29 pm

2 stops19h 24m

Ontario

Mon 2/16

12:18 pm-6:35 pm

2 stops22h 17m

$660

BelfastOntario

BHD - ONT

BHDONT

Belfast City

Wed 2/11

12:25 pm-9:24 pm

2 stops40h 59m

Ontario

Sun 2/15

11:58 pm-4:05 pm

2 stops32h 07m

$660

BelfastLos Angeles

BHD - LAX

BHDLAX

Belfast City

Fri 2/6

7:35 pm-3:50 pm

1 stop28h 15m

Los Angeles

Tue 2/10

7:15 am-10:30 am

2 stops19h 15m

$673

BelfastSanta Ana

BHD - SNA

BHDSNA

Belfast City

Fri 1/30

8:45 am-10:01 pm

2 stops21h 16m

Santa Ana J. Wayne/Orange Cnty

Tue 2/3

9:30 am-4:45 pm

2 stops23h 15m

$679

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Fri 3/13

7:35 pm-4:00 pm

1 stop27h 25m

San Francisco

Mon 3/16

10:36 am-2:15 pm

2 stops20h 39m

$683

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Fri 4/24

6:30 am-1:50 pm

1 stop15h 20m

San Francisco

Tue 4/28

4:35 pm-4:25 pm

1 stop15h 50m

$700

BelfastLas Vegas

BHD - LAS

BHDLAS

Belfast City

Wed 3/11

11:25 am-11:01 pm

2 stops18h 36m

Las Vegas Harry Reid Intl

Sun 3/15

6:45 pm-6:40 pm

2 stops16h 55m

$744

BelfastLas Vegas

BHD - LAS

BHDLAS

Belfast City

Fri 2/20

8:45 am-6:50 pm

1 stop18h 05m

Las Vegas Harry Reid Intl

Tue 2/24

10:00 am-2:50 pm

2 stops20h 50m

$764

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/20

Showing 1-10 of 35 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 round-trip 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 $477). Flying from Northern Ireland to California in December 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 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?

    A quick flight from Northern Ireland to California can take about 15h 05m. British Airways provides one of the quickest options available for as low as $636. Airlines will cover a distance of 5128 mi.

  • 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 vacation 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 $477). Flying from Northern Ireland to California in December 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

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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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