Northern Ireland

$360+ 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 8/18. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — BFS
Jul 31 — Aug 71
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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 July 1, 2026.

This Expedia deal was found by Cheapflights users on 6/29. 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.
Wed 11/46:00 pm
LAX
-
BHD
1 stop14h 35m
British Airways
Wed 11/119:15 am
BHD
-
LAX
1 stop14h 35m
British Airways
Deal found 6/29$836
This Priceline deal was found by Cheapflights users on 6/28. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/255:32 pm
LAX
-
BHD
2 stops18h 08m
British Airways
Mon 11/26:35 am
BHD
-
LAX
2 stops19h 22m
British Airways
Deal found 6/28$850
This British Airways deal was found by Cheapflights users on 6/30. 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.
Mon 11/25:25 pm
SFO
-
BHD
1 stop14h 40m
British Airways
Fri 11/136:45 am
BHD
-
SFO
1 stop16h 10m
British Airways
Deal found 6/30$870
This Mytrip deal was found by Cheapflights users on 7/1. 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 9/167:30 am
LAX
-
BHD
3 stops23h 00m
Multiple Airlines
Wed 9/236:50 pm
BHD
-
LAX
2 stops31h 35m
Multiple Airlines
Deal found 7/1$876
This oojo deal was found by Cheapflights users on 6/28. 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 10/288:20 pm
LAX
-
BHD
1 stop28h 10m
British Airways
Mon 11/25:45 pm
BHD
-
LAX
1 stop30h 05m
British Airways
Deal found 6/28$880
This Priceline deal was found by Cheapflights users on 6/29. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/189:00 pm
LAX
-
BHD
1 stop13h 45m
Multiple Airlines
Sat 10/247:05 pm
BHD
-
LAX
1 stop34h 10m
Multiple Airlines
Deal found 6/29$885
This FlightHub deal was found by Cheapflights users on 6/30. 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.
Wed 11/42:12 pm
SFO
-
BHD
2 stops16h 23m
British Airways
Tue 11/108:45 am
BHD
-
SFO
1 stop14h 10m
British Airways
Deal found 6/30$886
This Expedia deal was found by Cheapflights users on 6/29. 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.
Fri 11/63:30 pm
LAX
-
BHD
1 stop14h 45m
British Airways
Fri 11/138:45 am
BHD
-
LAX
1 stop15h 05m
British Airways
Deal found 6/29$886
This Delta deal was found by Cheapflights users on 6/30. 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 11/167:00 am
SFO
-
BHD
2 stops18h 10m
Delta
Tue 11/249:40 am
BHD
-
SFO
1 stop34h 05m
Delta
Deal found 6/30$893
This FlightHub deal was found by Cheapflights users on 6/30. 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.
Wed 11/189:12 am
SFO
-
BHD
2 stops17h 03m
British Airways
Wed 11/259:15 am
BHD
-
SFO
2 stops20h 57m
British Airways
Deal found 6/30$894
This Delta deal was found by Cheapflights users on 6/30. 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.
Sun 11/81:50 pm
SFO
-
BHD
1 stop35h 20m
Delta
Fri 11/139:40 am
BHD
-
SFO
2 stops23h 10m
Delta
Deal found 6/30$898
This Cheapflightsfares deal was found by Cheapflights users on 6/30. 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.
Thu 11/58:35 pm
SFO
-
BHD
1 stop15h 55m
British Airways
Wed 11/1112:25 pm
BHD
-
SFO
1 stop14h 10m
British Airways
Deal found 6/30$900

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 July 1, 2026.

Round-trip from

$836
(Expedia)

One-way from

$395
(Kiwi.com)
From California to Northern Ireland
One-way flight from California to Northern Ireland

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 July 1, 2026.
Use the filters below to find and compare flights from California to Northern Ireland that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Tue 11/3

8:35 pm-8:10 pm

1 stop15h 35m

Belfast City

Fri 11/13

11:30 am-6:35 pm

1 stop15h 05m

$870

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Wed 9/9

4:35 pm-3:40 pm

1 stop15h 05m

Belfast City

Thu 9/17

6:30 am-1:50 pm

1 stop15h 20m

$903

Los AngelesBelfast

LAX - BHD

LAXBHD

Los Angeles Los Angeles

Sun 10/25

10:00 pm-8:15 pm

1 stop15h 15m

Belfast City

Mon 11/2

5:45 pm-1:30 pm

1 stop27h 45m

$904

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Wed 12/2

8:35 pm-8:15 pm

1 stop15h 40m

Belfast City

Sun 12/6

6:30 am-6:35 pm

1 stop20h 05m

$919

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Sun 11/8

8:35 pm-6:40 pm

1 stop14h 05m

Belfast City

Sat 11/14

6:35 am-2:55 pm

1 stop16h 20m

$920

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Thu 11/19

5:25 pm-4:40 pm

1 stop15h 15m

Belfast City

Mon 11/23

7:25 pm-2:55 pm

1 stop27h 30m

$920
Quickest round-trip

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Fri 11/6

8:35 pm-7:10 pm

1 stop14h 35m

Belfast City

Tue 11/10

8:45 am-2:55 pm

1 stop14h 10m

$920

Los AngelesBelfast

LAX - BFS

LAXBFS

Los Angeles Los Angeles

Sun 8/2

11:00 pm-11:20 pm

2 stops40h 20m

Belfast Intl

Tue 8/18

1:35 pm-5:30 pm

1 stop35h 55m

$924

Los AngelesBelfast

LAX - BHD

LAXBHD

Los Angeles Los Angeles

Fri 9/25

4:43 pm-6:10 pm

2 stops17h 27m

Belfast City

Mon 10/5

11:35 am-6:25 pm

1 stop14h 50m

$925

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Tue 9/29

1:05 pm-8:50 am

2 stops35h 45m

Belfast City

Fri 10/9

12:00 pm-9:29 am

2 stops29h 29m

$932

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/1

Showing 1-10 of 57 resultsSorted by cheapest first
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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
No data available for this route at this time. Please check back soon.

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 July 1, 2026.
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.

Boarding

6.9

Comfort

6.8

Food

6.4

Crew

7.7

Entertainment

6.4

Overall

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.

Boarding

6.9

Comfort

6.8

Food

6.4

Crew

7.7

Entertainment

6.4

Overall

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 14h 35m. British Airways provides one of the quickest options available for as low as $836. 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.

See more FAQs

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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 July 1, 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$583Average$961FlexibilityNo cancel feeOn-time70%

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