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$682+ Cheap flights from Northern Ireland to California

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/5. Fares are subject to change and may not be available on all flights or dates of travel.
BFS — LAX
nov 13 — nov 201
qui 11/13
qui 11/20
1 adult, Economy
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Find 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 outubro 14, 2025.

This Mytrip deal was found by Cheapflights users on 10/11. 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.
qua 11/55:30 pmBFS - LAX
2 stops27h 35mMultiple Airlines
qua 11/1212:30 pmLAX - BFS
2 stops17h 35mMultiple Airlines
Deal found 10/11$682
This Delta deal was found by Cheapflights users on 10/13. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
qui 11/276:30 amBHD - ONT
2 stops21h 12mDelta
qui 12/46:40 amONT - BHD
2 stops26h 10mDelta
Deal found 10/13$807
This American Airlines deal was found by Cheapflights users on 10/13. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
qui 10/306:35 amBHD - LAX
1 stop17h 15mAmerican Airlines
seg 11/35:45 pmLAX - BHD
1 stop14h 20mAmerican Airlines
Deal found 10/13$844
This American Airlines deal was found by Cheapflights users on 10/13. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
qui 11/276:35 amBHD - ONT
2 stops34h 21mAmerican Airlines
dom 11/306:10 amONT - BHD
2 stops20h 10mAmerican Airlines
Deal found 10/13$873
This Mytrip deal was found by Cheapflights users on 10/13. 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.
qui 11/272:45 pmBFS - LAX
2 stops34h 15mMultiple Airlines
qui 12/47:30 pmLAX - BFS
2 stops18h 30mMultiple Airlines
Deal found 10/13$917
This lol.travel deal was found by Cheapflights users on 10/12. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
seg 12/15:20 pmBHD - LAS
1 stop28h 55mVirgin Atlantic
ter 12/94:05 pmLAS - BHD
1 stop16h 45mVirgin Atlantic
Deal found 10/12$940
This Finnair deal was found by Cheapflights users on 10/12. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
seg 12/111:30 amBHD - LAS
1 stop15h 20mFinnair
ter 12/911:00 amLAS - BHD
2 stops16h 30mFinnair
Deal found 10/12$964
This Delta deal was found by Cheapflights users on 10/12. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
seg 12/16:30 amBHD - LAS
2 stops24h 00mDelta
ter 12/910:00 amLAS - BHD
2 stops22h 50mDelta
Deal found 10/12$974
This Kiwi.com deal was found by Cheapflights users on 10/12. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
seg 12/110:20 pmBFS - LAS
2 stops31h 11mMultiple Airlines
ter 12/98:45 pmLAS - BFS
1 stop17h 05mMultiple Airlines
Deal found 10/12$1,021
This Delta deal was found by Cheapflights users on 10/13. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
qui 10/306:30 amBHD - SNA
2 stops19h 34mDelta
seg 11/311:05 amSNA - BHD
2 stops21h 45mDelta
Deal found 10/13$1,050
This Mytrip deal was found by Cheapflights users on 10/13. 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.
qui 11/277:05 amBFS - LAS
2 stops18h 45mMultiple Airlines
qui 12/47:35 pmLAS - BFS
2 stops18h 45mMultiple Airlines
Deal found 10/13$1,072
This Mytrip deal was found by Cheapflights users on 10/12. 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.
seg 10/277:20 pmBFS - LAS
3 stops32h 45mMultiple Airlines
sáb 11/18:45 amLAS - BFS
3 stops22h 55mMultiple Airlines
Deal found 10/12$1,119

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 outubro 14, 2025.

Round-trip from

$682
(Mytrip)

Popular in

February

Cheapest in

January

Average price

$646
From Northern Ireland to California
Search Deals
Highest demand for flights based on searches. 4% potential increase in price ($34 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($31 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
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 outubro 14, 2025.
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

qua 11/5

6:30 am-10:55 am

2 stops36h 25m

Los Angeles

qua 11/12

5:30 am-4:15 pm

3 stops26h 45m

$714

BelfastSanta Ana

BHD - SNA

BHDSNA

Belfast City

seg 3/9

6:35 am-8:15 pm

2 stops20h 40m

Santa Ana J. Wayne/Orange Cnty

qua 3/11

1:43 pm-4:35 pm

2 stops19h 52m

$769

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

qua 3/4

9:15 am-6:45 pm

1 stop17h 30m

San Francisco

dom 3/8

1:25 pm-1:55 pm

2 stops17h 30m

$782

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

qui 3/5

10:40 am-6:45 pm

1 stop16h 05m

San Francisco

seg 3/9

1:25 pm-2:15 pm

2 stops17h 50m

$802

BelfastOntario

BHD - ONT

BHDONT

Belfast City

qui 11/27

6:30 am-7:42 pm

2 stops21h 12m

Ontario

qui 12/4

6:40 am-4:50 pm

2 stops26h 10m

$807

BelfastLos Angeles

BHD - LAX

BHDLAX

Belfast City

sex 1/16

7:20 am-9:08 pm

2 stops21h 48m

Los Angeles

sex 1/23

11:30 am-8:30 pm

2 stops25h 00m

$808

BelfastOntario

BHD - ONT

BHDONT

Belfast City

qui 3/5

10:40 am-9:57 pm

2 stops19h 17m

Ontario

seg 3/9

3:09 pm-6:35 pm

2 stops20h 26m

$809

BelfastLos Angeles

BHD - LAX

BHDLAX

Belfast City

qui 10/30

6:35 am-4:50 pm

1 stop17h 15m

Los Angeles

seg 11/3

5:45 pm-4:05 pm

1 stop14h 20m

$844

BelfastOntario

BHD - ONT

BHDONT

Belfast City

sex 1/16

5:20 pm-10:52 pm

2 stops37h 32m

Ontario

sex 1/23

6:00 am-4:50 pm

2 stops26h 50m

$864

BelfastSanta Ana

BHD - SNA

BHDSNA

Belfast City

sex 1/16

8:45 am-9:49 pm

2 stops21h 04m

Santa Ana J. Wayne/Orange Cnty

sex 1/23

11:42 am-2:15 pm

2 stops18h 33m

$871

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/11

Showing 1-10 of 26 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 $678). 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.

How much does it cost to fly round-trip from Northern Ireland to California?

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 20h 40m. American Airlines provides one of the quickest options available for as low as $769. Airlines will cover a distance of 5126 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with 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 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 $678). 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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