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$513+ 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 4/28. Fares are subject to change and may not be available on all flights or dates of travel.
BFS — LAX
Dec 26 — Jan 21
Fri 12/26
Fri 1/2
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 November 26, 2025.

This Mytrip deal was found by Cheapflights users on 11/24. 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 12/17:50 amBFS - LAS
3 stops47h 14mMultiple Airlines
Sun 12/74:25 pmLAS - BFS
2 stops21h 05mMultiple Airlines
Deal found 11/24$1,329
This Expedia deal was found by Cheapflights users on 11/24. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/256:50 pmBHD - LAS
2 stops55h 00mAer Lingus
Tue 12/27:35 pmLAS - BHD
2 stops33h 45mAer Lingus
Deal found 11/24$1,377
This oojo deal was found by Cheapflights users on 11/24. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/2511:25 amBHD - LAS
2 stops18h 17mBritish Airways
Tue 12/28:55 pmLAS - BHD
1 stop13h 45mBritish Airways
Deal found 11/24$1,471
This Expedia deal was found by Cheapflights users on 11/24. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/256:30 amBHD - LAS
1 stop15h 45mKLM
Tue 12/24:05 pmLAS - BHD
1 stop16h 45mKLM
Deal found 11/24$1,806
This Mytrip deal was found by Cheapflights users on 11/24. 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.
Tue 11/256:30 amBHD - LAS
3 stops23h 01mMultiple Airlines
Tue 12/28:00 amLAS - BHD
3 stops29h 00mMultiple Airlines
Deal found 11/24$2,166
This AranGrant deal was found by Cheapflights users on 11/24. 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 AranGrant is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/277:15 amBHD - LAX
2 stops19h 15mMultiple Airlines
Mon 1/58:59 pmLAX - BHD
2 stops37h 41mMultiple Airlines
Deal found 11/24$2,173
This Mytrip deal was found by Cheapflights users on 11/24. 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.
Tue 11/256:30 amBFS - LAS
2 stops19h 20mMultiple Airlines
Tue 12/27:35 pmLAS - BFS
2 stops16h 20mMultiple Airlines
Deal found 11/24$2,556
This AranGrant deal was found by Cheapflights users on 11/24. 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 AranGrant is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/279:15 amBHD - LAX
1 stop36h 15mBritish Airways
Mon 1/58:59 pmLAX - BHD
2 stops37h 41mBritish Airways
Deal found 11/24$2,610
This Virgin Atlantic deal was found by Cheapflights users on 11/24. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/275:20 pmBHD - LAX
1 stop26h 25mVirgin Atlantic
Mon 1/51:45 pmLAX - BHD
1 stop19h 05mVirgin Atlantic
Deal found 11/24$2,962
This American Airlines deal was found by Cheapflights users on 11/24. 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.
Fri 12/268:45 amBHD - LAX
1 stop19h 40mAmerican Airlines
Mon 1/55:40 pmLAX - BHD
1 stop14h 25mAmerican Airlines
Deal found 11/24$4,598
This KLM deal was found by Cheapflights users on 11/24. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/276:30 amBHD - ONT
2 stops18h 38mKLM
Mon 1/512:41 pmONT - BHD
2 stops20h 09mKLM
Deal found 11/24$4,618
This American Airlines deal was found by Cheapflights users on 11/24. 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.
Sat 12/276:35 amBHD - LAX
1 stop21h 50mAmerican Airlines
Mon 1/58:05 amLAX - BHD
2 stops18h 35mAmerican Airlines
Deal found 11/24$5,190

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 November 26, 2025.

Round-trip from

$660
(TravelUp)

One-way from

$513
(Finnair)

Popular in

February

Cheapest in

June
From Northern Ireland to California
Search Deals
One-way flight from Northern Ireland to California
Search Deals
Highest demand for flights based on searches. 2% potential increase in price ($20 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($33 potential savings vs. average RT price).
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 November 26, 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

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Thu 1/29

6:35 am-3:00 pm

1 stop16h 25m

San Francisco

Sat 2/7

10:11 am-11:10 am

2 stops16h 59m

$660

BelfastLos Angeles

BHD - LAX

BHDLAX

Belfast City

Wed 2/4

6:35 am-3:20 pm

1 stop16h 45m

Los Angeles

Sun 2/8

10:50 am-1:55 pm

2 stops19h 05m

$677

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Thu 1/15

9:05 am-6:45 pm

1 stop17h 40m

San Francisco

Mon 1/19

8:00 am-10:40 am

2 stops18h 40m

$681

BelfastOntario

BHD - ONT

BHDONT

Belfast City

Thu 1/22

6:35 am-5:22 pm

2 stops18h 47m

Ontario

Mon 1/26

10:58 am-4:05 pm

2 stops21h 07m

$682

BelfastSanta Ana

BHD - SNA

BHDSNA

Belfast City

Wed 1/21

6:35 am-8:02 pm

2 stops21h 27m

Santa Ana J. Wayne/Orange Cnty

Sun 1/25

8:45 am-10:20 am

2 stops17h 35m

$682

BelfastSanta Ana

BHD - SNA

BHDSNA

Belfast City

Fri 1/30

11:30 am-10:27 pm

2 stops18h 57m

Santa Ana J. Wayne/Orange Cnty

Tue 2/3

10:53 am-2:50 pm

2 stops19h 57m

$682

BelfastLas Vegas

BHD - LAS

BHDLAS

Belfast City

Wed 2/4

12:25 pm-6:50 pm

1 stop14h 25m

Las Vegas Harry Reid Intl

Sun 2/8

8:00 am-1:55 pm

2 stops21h 55m

$745

BelfastSanta Ana

BHD - SNA

BHDSNA

Belfast City

Mon 3/9

6:35 am-9:17 pm

2 stops21h 42m

Santa Ana J. Wayne/Orange Cnty

Wed 3/11

1:01 pm-10:20 am

2 stops38h 19m

$756

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Thu 1/15

6:35 am-6:45 pm

1 stop20h 10m

San Francisco

Mon 1/19

8:40 pm-8:15 pm

1 stop15h 35m

$871

BelfastLos Angeles

BFS - LAX

BFSLAX

Belfast Intl

Thu 1/8

7:05 am-6:30 pm

2 stops19h 25m

Los Angeles

Thu 1/15

8:15 pm-8:25 pm

2 stops16h 10m

$891

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/25

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.

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 16h 25m. British Airways provides one of the quickest options available for as low as $660. Airlines will cover a distance of 5038 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

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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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