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Northern Ireland

$206+ 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 4/18. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — BFS
Jan 20 — Jan 271
Tue 1/20
Tue 1/27
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 21, 2025.

This Delta deal was found by Cheapflights users on 12/21. 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 12/2311:10 amLAX - BHD
2 stops21h 40mDelta
Fri 1/26:30 amBHD - LAX
2 stops19h 17mDelta
Deal found 12/21$1,901
This British Airways deal was found by Cheapflights users on 12/19. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/243:37 pmSFO - BHD
2 stops34h 43mBritish Airways
Sat 1/36:35 amBHD - SFO
2 stops24h 46mBritish Airways
Deal found 12/19$2,022
This American Airlines deal was found by Cheapflights users on 12/21. 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.
Tue 12/237:15 pmLAX - BHD
1 stop17h 00mAmerican Airlines
Fri 1/211:30 amBHD - LAX
2 stops18h 25mAmerican Airlines
Deal found 12/21$2,276
This oojo deal was found by Cheapflights users on 12/20. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/277:15 pmLAX - BHD
1 stop16h 25mBritish Airways
Sat 1/36:35 amBHD - LAX
2 stops20h 12mBritish Airways
Deal found 12/20$2,478
This oojo deal was found by Cheapflights users on 12/19. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/243:01 pmOAK - BHD
2 stops32h 29mBritish Airways
Sat 1/36:35 amBHD - OAK
2 stops25h 24mBritish Airways
Deal found 12/19$2,803
This KLM deal was found by Cheapflights users on 12/20. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/271:45 pmLAX - BHD
1 stop23h 15mKLM
Sat 1/35:20 pmBHD - LAX
1 stop26h 25mKLM
Deal found 12/20$2,908
This oojo deal was found by Cheapflights users on 12/21. 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.
Mon 12/225:59 pmLAX - BHD
2 stops33h 31mBritish Airways
Sat 1/36:35 amBHD - LAX
2 stops20h 12mBritish Airways
Deal found 12/21$3,045
This Ovago deal was found by Cheapflights users on 12/21. 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.
Mon 12/229:00 pmLAX - BHD
1 stop15h 15mMultiple Airlines
Sat 1/39:45 amBHD - LAX
2 stops21h 21mMultiple Airlines
Deal found 12/21$3,073
This Delta deal was found by Cheapflights users on 12/19. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/227:40 amLAX - BHD
2 stops29h 20mDelta
Sat 1/36:30 amBHD - LAX
2 stops21h 36mDelta
Deal found 12/19$3,123
This Mytrip deal was found by Cheapflights users on 12/19. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/243:40 pmSFO - BHD
3 stops34h 05mMultiple Airlines
Sat 1/33:00 pmBHD - SFO
2 stops29h 40mMultiple Airlines
Deal found 12/19$4,150

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 21, 2025.

Round-trip from

$604
(Cheapflightsfares)

One-way from

$206
(oojo)

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 21, 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

Thu 1/29

9:00 pm-6:50 pm

1 stop13h 50m

Belfast City

Thu 2/5

11:05 am-6:30 pm

1 stop15h 25m

$604

Los AngelesBelfast

LAX - BHD

LAXBHD

Los Angeles

Fri 1/23

9:00 pm-11:10 am

1 stop30h 10m

Belfast City

Tue 2/3

10:00 am-3:50 pm

1 stop13h 50m

$609

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Mon 1/19

8:40 pm-6:35 pm

1 stop13h 55m

Belfast City

Mon 1/26

5:45 pm-3:00 pm

1 stop29h 15m

$619

Los AngelesBelfast

LAX - BHD

LAXBHD

Los Angeles

Wed 2/4

3:30 pm-2:15 pm

1 stop14h 45m

Belfast City

Sun 2/8

5:35 pm-6:30 pm

1 stop32h 55m

$624

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Tue 1/13

2:36 pm-4:45 pm

2 stops18h 09m

Belfast City

Tue 1/20

7:25 pm-3:00 pm

1 stop27h 35m

$640

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Thu 1/15

5:30 pm-4:40 pm

1 stop15h 10m

Belfast City

Wed 1/21

5:40 pm-3:00 pm

1 stop29h 20m

$649

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Wed 3/18

9:40 pm-7:10 pm

1 stop14h 30m

Belfast City

Sun 3/22

9:10 am-4:00 pm

1 stop13h 50m

$649

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Wed 3/4

5:30 pm-7:10 pm

1 stop17h 40m

Belfast City

Sun 3/8

9:10 am-3:00 pm

1 stop13h 50m

$680

San FranciscoBelfast

SFO - BFS

SFOBFS

San Francisco

Wed 3/18

6:20 pm-4:10 pm

2 stops14h 50m

Belfast Intl

Sun 3/22

7:10 am-3:35 pm

3 stops39h 25m

$754

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Mon 3/30

5:02 pm-6:45 pm

2 stops17h 43m

Belfast City

Sat 4/11

9:35 am-9:56 pm

2 stops20h 21m

$756

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/19

Showing 1-10 of 37 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 21, 2025.

Unlike at noon, when flights are generally more expensive, you can save up to 8% on flights from California to Northern Ireland by exploring options for tickets in the morning.

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 21, 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
7,600 reviews

Boarding

6.9

Entertainment

6.4

Crew

7.6

Food

6.4

Overall

6.7

Comfort

6.7

Reviews

1 / 20
8.0
Excellent

Lakshmi,Dec 2025

SFO - LHR

I had a great time on the flight with good entertainment and food. The staff was awesome. The only thing was there was a delay in boarding and takeoff from London. However, I was pleasantly surprised when the airline sent an apology for the few later landing in Mumbai. They did not have WiFi on board on the leg from London to Mumbai but that was okay for me. On the first leg from SF to London, a couple of seats ahead of me had issues with their display so they could not watch anything on their screens although the stewardess gas be them an option to use the WiFi on their devices. This did not affect me, however, so that was cool. I would recommend British Airways. This was my first time flying with them and I had a lovely flight.
British Airways
6.7
Okay
7,600 reviews
British Airways
6.7
Okay
7,600 reviews

Boarding

6.9

Entertainment

6.4

Crew

7.6

Food

6.4

Overall

6.7

Comfort

6.7

Reviews

1 / 20
8.0
Excellent

Lakshmi,Dec 2025

SFO - LHR

I had a great time on the flight with good entertainment and food. The staff was awesome. The only thing was there was a delay in boarding and takeoff from London. However, I was pleasantly surprised when the airline sent an apology for the few later landing in Mumbai. They did not have WiFi on board on the leg from London to Mumbai but that was okay for me. On the first leg from SF to London, a couple of seats ahead of me had issues with their display so they could not watch anything on their screens although the stewardess gas be them an option to use the WiFi on their devices. This did not affect me, however, so that was cool. I would recommend British Airways. This was my first time flying with them and I had a lovely flight.

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 13h 50m. British Airways provides one of the quickest options available for as low as $604. The distance between California and Northern Ireland is about 5128 mi.

  • 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 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$599Average$858FlexibilityNo cancel feeOn-time70%

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