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Northern Ireland

$293+ 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 3/29. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — BFS
dic. 26 — ene. 21
vie. 12/26
vie. 1/2
1 adult, Economy
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Cheap 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 noviembre 26, 2025.

Round-trip from

$576
(Cheapflightsfares)

One-way from

$293
(Kiwi.com)

Popular in

June

Cheapest in

October

Average price

$895
From California to Northern Ireland
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One-way flight from California to Northern Ireland
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Highest demand for flights based on searches. 18% potential increase in price ($199 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($40 potential savings vs. average RT price).
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Average for round-trip flights in November 2025
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Find 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 noviembre 26, 2025.

This Air France deal was found by Cheapflights users on 11/25. 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.
sáb. 12/61:55 pmSFO - BHD
1 stop18h 55mMultiple Airlines
vie. 12/125:20 pmBHD - SFO
1 stop26h 30mMultiple Airlines
Deal found 11/25$710
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.
sáb. 12/62:00 pmSFO - BHD
2 stops18h 50mKLM
vie. 12/125:20 pmBHD - SFO
1 stop26h 30mKLM
Deal found 11/24$715
This oojo deal was found by Cheapflights users on 11/26. 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.
sáb. 12/65:30 pmSFO - BHD
1 stop30h 55mBritish Airways
vie. 12/127:35 pmBHD - SFO
1 stop27h 25mBritish Airways
Deal found 11/26$815
This Cheapflightsfares 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 11/249:00 pmLAX - BHD
1 stop15h 15mBritish Airways
sáb. 12/66:35 amBHD - LAX
1 stop21h 50mBritish Airways
Deal found 11/24$946
This Ovago 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 11/308:15 pmLAX - BHD
2 stops16h 35mAer Lingus
dom. 12/146:50 pmBHD - LAX
2 stops31h 40mAer Lingus
Deal found 11/24$959
This FlightHub deal was found by Cheapflights users on 11/26. 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.
sáb. 12/65:20 pmSFO - BHD
2 stops16h 00mAer Lingus
vie. 12/123:25 pmBHD - SFO
2 stops32h 10mAer Lingus
Deal found 11/26$960
This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 11/309:00 pmLAX - BHD
1 stop15h 15mBritish Airways
dom. 12/1412:10 pmBHD - LAX
2 stops19h 17mBritish Airways
Deal found 11/24$990
This deal was found by Cheapflights users on 11/25. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 12/65:30 pmSFO - BHD
1 stop15h 15mBritish Airways
sáb. 12/139:15 amBHD - SFO
1 stop13h 45mBritish Airways
Deal found 11/25$1,005
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.
dom. 11/3011:59 pmONT - BHD
2 stops30h 16mBritish Airways
dom. 12/1412:10 pmBHD - ONT
2 stops19h 45mBritish Airways
Deal found 11/24$1,092
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.
dom. 11/307:00 amLAX - BFS
3 stops27h 55mMultiple Airlines
dom. 12/146:30 amBFS - LAX
3 stops22h 58mMultiple Airlines
Deal found 11/24$1,095
This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 11/286:10 pmLAX - BHD
2 stops17h 05mBritish Airways
dom. 11/306:30 amBHD - LAX
1 stop16h 50mBritish Airways
Deal found 11/24$1,107
This Mytrip deal was found by Cheapflights users on 11/23. 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.
mar. 12/96:15 amLAS - BFS
3 stops24h 10mMultiple Airlines
vie. 1/96:30 amBFS - LAS
3 stops25h 44mMultiple Airlines
Deal found 11/23$1,257

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 noviembre 26, 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

vie. 1/23

3:30 pm-5:15 pm

1 stop17h 45m

Belfast City

mar. 2/3

6:35 am-3:50 pm

1 stop17h 15m

$576

Los AngelesBelfast

LAX - BHD

LAXBHD

Los Angeles

mié. 1/28

9:00 pm-7:10 pm

1 stop14h 10m

Belfast City

dom. 2/1

8:25 pm-1:30 pm

1 stop25h 05m

$595

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

vie. 1/9

5:30 pm-5:15 pm

1 stop15h 45m

Belfast City

vie. 1/16

6:45 am-3:00 pm

1 stop16h 15m

$602

Los AngelesBelfast

LAX - BHD

LAXBHD

Los Angeles

jue. 2/12

6:00 pm-4:40 pm

1 stop14h 40m

Belfast City

lun. 2/16

7:25 pm-1:30 pm

1 stop26h 05m

$602

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

mié. 2/11

5:30 pm-7:10 pm

1 stop17h 40m

Belfast City

dom. 2/15

8:25 pm-3:00 pm

1 stop26h 35m

$620

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

jue. 2/12

2:47 pm-4:40 pm

2 stops17h 53m

Belfast City

lun. 2/16

11:30 am-11:58 pm

2 stops20h 28m

$625

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

mié. 1/28

6:00 am-4:50 pm

2 stops26h 50m

Belfast City

dom. 2/1

5:20 pm-12:16 pm

2 stops50h 56m

$653

Santa AnaBelfast

SNA - BHD

SNABHD

Santa Ana J. Wayne/Orange Cnty

mié. 1/28

8:00 am-4:50 pm

2 stops24h 50m

Belfast City

dom. 2/1

5:20 pm-10:15 pm

2 stops36h 55m

$653

Los AngelesBelfast

LAX - BHD

LAXBHD

Los Angeles

mié. 1/28

11:55 am-4:50 pm

2 stops20h 55m

Belfast City

dom. 2/1

5:20 pm-4:20 pm

2 stops31h 00m

$655

Santa AnaBelfast

SNA - BHD

SNABHD

Santa Ana J. Wayne/Orange Cnty

mié. 1/28

7:30 am-4:50 pm

2 stops25h 20m

Belfast City

dom. 2/1

5:20 pm-4:34 pm

2 stops31h 14m

$655

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/25

Showing 1-10 of 46 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 noviembre 26, 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 noviembre 26, 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
7,539 reviews

Boarding

6.9

Overall

6.7

Entertainment

6.4

Food

6.3

Comfort

6.7

Crew

7.6

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
7,539 reviews
British Airways
6.7
Okay
7,539 reviews

Boarding

6.9

Overall

6.7

Entertainment

6.4

Food

6.3

Comfort

6.7

Crew

7.6

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 17h 45m. British Airways provides one of the quickest options available for as low as $576. 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 noviembre 26, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$599Average$870FlexibilityNo cancel feeOn-time70%

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