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Northern Ireland

$509+ Cheap flights from California to Northern Ireland

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 5/16. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — BFS
Jan 11 — Jan 181
Sun 1/11
Sun 1/18
1 adult, Economy
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Cheap flight deals from California to Northern Ireland

Cheapest flights from California to Northern Ireland
Explore the most affordable flight options available from California to Northern Ireland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 12, 2025.

This Kiwi.com deal was found by Cheapflights users on 12/10. 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.
Thu 12/188:15 pmLAX - BFS
2 stops27h 30mMultiple Airlines
Wed 12/245:30 pmBFS - LAX
1 stop28h 30mMultiple Airlines
Deal found 12/10$1,809
This Ovago deal was found by Cheapflights users on 12/10. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/241:15 pmLAS - BHD
2 stops43h 25mBritish Airways
Sun 12/288:25 pmBHD - LAS
1 stop30h 25mBritish Airways
Deal found 12/10$1,842
This Delta deal was found by Cheapflights users on 12/10. 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.
Thu 12/185:45 amLAX - BHD
2 stops27h 05mDelta
Wed 12/245:20 pmBHD - LAX
2 stops36h 26mDelta
Deal found 12/10$1,857
This Kiwi.com deal was found by Cheapflights users on 12/10. 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.
Fri 12/197:00 amLAX - BFS
2 stops43h 55mMultiple Airlines
Wed 12/245:30 pmBFS - LAX
1 stop28h 30mMultiple Airlines
Deal found 12/10$1,975
This eDestinos deal was found by Cheapflights users on 12/11. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/228:15 pmLAX - BHD
2 stops30h 35mMultiple Airlines
Sat 1/36:35 amBHD - LAX
1 stop21h 50mMultiple Airlines
Deal found 12/11$2,185
This Air France deal was found by Cheapflights users on 12/10. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/181:45 pmLAX - BHD
1 stop19h 05mMultiple Airlines
Wed 12/245:20 pmBHD - LAX
1 stop26h 25mMultiple Airlines
Deal found 12/10$2,437
This Delta deal was found by Cheapflights users on 12/10. 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.
Sat 12/271:45 pmLAX - BHD
1 stop23h 15mDelta
Sat 1/36:30 amBHD - LAX
2 stops17h 55mDelta
Deal found 12/10$2,441
This Delta deal was found by Cheapflights users on 12/10. 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.
Tue 12/236:35 amLAX - BHD
2 stops26h 15mDelta
Fri 1/26:30 amBHD - LAX
2 stops22h 26mDelta
Deal found 12/10$2,446
This KLM deal was found by Cheapflights users on 12/10. 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.
Fri 12/191:45 pmLAX - BHD
1 stop23h 15mKLM
Wed 12/245:20 pmBHD - LAX
1 stop26h 25mKLM
Deal found 12/10$2,475
This Ovago deal was found by Cheapflights users on 12/10. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/185:40 pmLAX - BHD
1 stop17h 10mBritish Airways
Fri 12/266:45 amBHD - LAX
1 stop16h 35mBritish Airways
Deal found 12/10$2,539
This FlightHub deal was found by Cheapflights users on 12/11. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/272:54 pmLAX - BHD
2 stops21h 36mBritish Airways
Sat 1/36:35 amBHD - LAX
2 stops25h 24mBritish Airways
Deal found 12/11$2,571

Find flight deals from California to Northern Ireland

Keep the following information in mind while searching for California to Northern Ireland flight deals. Data was last updated December 12, 2025.

Round-trip from

$603
(Cheapflightsfares)

One-way from

$509
(Kiwi.com)

Popular in

June

Cheapest in

October

Average price

$1,098
From California to Northern Ireland
Search Deals
One-way flight from California to Northern Ireland
Search Deals
Highest demand for flights based on searches. 17% potential increase in price ($187 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($39 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from California to Northern Ireland 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 December 12, 2025.
Use the filters below to find and compare flights from California to Northern Ireland that are best for you.

Fly from

California

Fly to

Northern Ireland

Route

Depart

Return

Price

Los AngelesBelfast

LAX - BHD

LAXBHD

Los Angeles

Fri 1/23

9:00 pm-7:15 pm

1 stop14h 15m

Belfast City

Tue 2/3

6:35 am-1:30 pm

1 stop14h 55m

$603

Los AngelesBelfast

LAX - BHD

LAXBHD

Los Angeles

Thu 2/12

9:00 pm-6:50 pm

1 stop13h 50m

Belfast City

Mon 2/16

11:30 am-6:30 pm

1 stop15h 00m

$624

Los AngelesBelfast

LAX - BHD

LAXBHD

Los Angeles

Wed 2/11

3:30 pm-2:15 pm

1 stop14h 45m

Belfast City

Sun 2/15

12:10 pm-6:30 pm

1 stop14h 20m

$624

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Wed 2/11

5:30 pm-4:35 pm

1 stop15h 05m

Belfast City

Sun 2/15

9:10 am-6:45 pm

1 stop17h 35m

$680

San JoseBelfast

SJC - BHD

SJCBHD

San Jose

Sat 1/24

10:45 pm-4:50 pm

2 stops34h 05m

Belfast City

Sat 1/31

5:20 pm-9:28 pm

2 stops36h 08m

$710

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Tue 5/19

2:46 pm-7:25 pm

2 stops20h 39m

Belfast City

Thu 6/18

6:35 am-1:50 pm

1 stop15h 15m

$716

Las VegasBelfast

LAS - BHD

LASBHD

Las Vegas Harry Reid Intl

Thu 2/5

12:00 pm-4:40 pm

2 stops20h 40m

Belfast City

Mon 2/9

5:45 pm-6:50 pm

1 stop33h 05m

$828

Los AngelesBelfast

LAX - BFS

LAXBFS

Los Angeles

Sat 1/24

8:30 am-11:50 pm

3 stops31h 20m

Belfast Intl

Sat 1/31

8:10 am-5:05 pm

3 stops40h 55m

$832

Santa AnaBelfast

SNA - BHD

SNABHD

Santa Ana J. Wayne/Orange Cnty

Wed 2/11

11:42 am-2:15 pm

2 stops18h 33m

Belfast City

Sun 2/15

9:10 am-9:54 pm

2 stops20h 44m

$838

Santa AnaBelfast

SNA - BHD

SNABHD

Santa Ana J. Wayne/Orange Cnty

Thu 1/29

4:23 pm-4:40 pm

2 stops16h 17m

Belfast City

Mon 2/2

6:35 am-10:01 pm

2 stops23h 26m

$838

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/10

Showing 1-10 of 27 results
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Best time to book a flight from California to Northern Ireland

Have a flexible travel schedule? Discover the best time to fly to Northern Ireland from California 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 California to Northern Ireland

What is the cheapest month to book a flight from California to Northern Ireland?

Currently, March is the cheapest month in which you can book a flight from California to Northern Ireland (average of $586). Flying from California to Northern Ireland in June is currently the most expensive (average of $927). 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.

What is the cheapest time of day to fly from CA to NIR?

Find hourly flight availability from California to Northern Ireland. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 12, 2025.

Unlike in the evening, when flights are generally more expensive, you can save up to 17% on flights from California to Northern Ireland by exploring options for tickets in the morning.

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

Reviews of airlines servicing Northern Ireland

Get insights into the airlines that provide service to Northern Ireland. 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 Northern Ireland. Reviews last updated December 12, 2025.
Peruse reviews from past customers who have flown with British Airways from California to Northern Ireland to help guide your decision. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
British Airways
6.7
Okay
7,571 reviews

Entertainment

6.4

Crew

7.6

Boarding

6.9

Overall

6.7

Food

6.4

Comfort

6.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2025

IAD - LHR

The plane had to load and unload passengers not through a jet way but out on the tarmac at Heathrow. The steps were steep. We weren't expecting to have to carry our luggage up and down stairs.
British Airways
6.7
Okay
7,571 reviews
British Airways
6.7
Okay
7,571 reviews

Entertainment

6.4

Crew

7.6

Boarding

6.9

Overall

6.7

Food

6.4

Comfort

6.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2025

IAD - LHR

The plane had to load and unload passengers not through a jet way but out on the tarmac at Heathrow. The steps were steep. We weren't expecting to have to carry our luggage up and down stairs.

Related info for your journey

Find useful and relevant information for your journey from California to Northern Ireland. 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 California to Northern Ireland?

    A quick flight from California to Northern Ireland can take about 14h 15m. British Airways provides one of the quickest options available for as low as $603. The distance between California and Northern Ireland is about 5128 mi. This flight may include one or multiple stops.

  • Can I find deals for flights from California to Northern Ireland that include hotel bookings?

    Yes. In addition to deals on California to Northern Ireland flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from California to Northern Ireland?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from California to Northern Ireland.

  • Can I find deals for business class flights from California to Northern Ireland?

    Yes. Cheapflights offers flight deals from California to Northern Ireland 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 California to Northern Ireland?

    Currently, March is the cheapest month in which you can book a flight from California to Northern Ireland (average of $586). Flying from California to Northern Ireland in June is currently the most expensive (average of $927). 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 California to Northern Ireland

See prices for flight routes from nearby airports that may be better suited for you.
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Top airline flying from California to Northern Ireland

Discover the top airline that operate flights from California to Northern Ireland. 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 2,558,603 searches. Data last updated December 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$599Average$870FlexibilityNo cancel feeOn-time70%

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