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Cheap flights from Northern Ireland to California from £322

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 27/8. Fares are subject to change and may not be available on all flights or dates of travel.
BFS — LAX
2 Jul — 9 Jul1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Northern Ireland to California

Enter your travel dates to find the best prices.

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 2 June 2026.

Wed 2/905:55
BFS
-
LAX
1 stop20h 20m
Multiple Airlines
Fri 11/908:00
LAX
-
BFS
2 stops23h 05m
Multiple Airlines
Deal found 29/5£638
Wed 2/1211:25
BHD
-
ONT
2 stops18h 35m
British Airways
Sun 6/1212:46
ONT
-
BHD
2 stops20h 04m
British Airways
Deal found 1/6£655
Wed 2/907:00
BHD
-
LAX
1 stop19h 15m
Multiple Airlines
Fri 11/914:05
LAX
-
BHD
2 stops22h 25m
Multiple Airlines
Deal found 29/5£664
Tue 14/713:45
BHD
-
LAX
2 stops19h 09m
British Airways
Tue 21/720:55
LAX
-
BHD
1 stop15h 40m
British Airways
Deal found 2/6£675
Fri 17/709:35
BHD
-
LAX
2 stops18h 10m
British Airways
Fri 24/720:55
LAX
-
BHD
1 stop15h 40m
British Airways
Deal found 2/6£685
Thu 3/906:30
BHD
-
SFO
1 stop15h 20m
British Airways
Sat 26/916:35
SFO
-
BHD
1 stop17h 40m
British Airways
Deal found 30/5£699
Wed 2/909:50
BHD
-
LAX
2 stops20h 20m
Delta
Fri 11/909:35
LAX
-
BHD
2 stops23h 20m
Delta
Deal found 29/5£710
Wed 2/909:50
BHD
-
SFO
2 stops19h 12m
KLM
Sat 26/914:00
SFO
-
BHD
2 stops18h 55m
KLM
Deal found 30/5£710
Tue 1/906:30
BHD
-
SFO
1 stop15h 20m
American Airlines
Sat 26/909:02
SFO
-
BHD
2 stops19h 23m
American Airlines
Deal found 30/5£719
Wed 2/910:05
BHD
-
ONT
2 stops19h 07m
British Airways
Fri 11/916:07
ONT
-
BHD
2 stops18h 03m
British Airways
Deal found 29/5£720
Thu 3/909:50
BHD
-
SFO
2 stops19h 12m
KLM
Sat 26/914:20
SFO
-
BHD
2 stops18h 35m
KLM
Deal found 30/5£722
Wed 7/1011:35
BHD
-
LAS
1 stop16h 25m
British Airways
Sun 11/1017:20
LAS
-
BHD
1 stop13h 15m
British Airways
Deal found 1/6£730

Find 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 2 June 2026.

Round-trip from

£638

One-way from

£322
2/9-11/9
  • 2/9-11/9
  • 3 total stops
  • 43h 25m total
  • Northern Ireland to California
Search Deals
27/8
  • 27/8
  • 3 total stops
  • 56h 35m total
  • Northern Ireland to California
Search Deals

Cheapflights Fare Finder

 
Customise 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 858,174 searches. Data last updated 2 June 2026.
Use the filters below to find and compare flights from Northern Ireland to California that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

BelfastLos Angeles

BFS - LAX

BFSLAX

Belfast Intl

Wed 2/9

05:55-18:15

1 stop20h 20m

Los Angeles

Fri 11/9

08:00-15:05

2 stops23h 05m

£638
Fastest return journey

BelfastLos Angeles

BHD - LAX

BHDLAX

Belfast City

Tue 14/7

13:45-00:54

2 stops19h 09m

Los Angeles

Tue 21/7

17:05-15:20

1 stop14h 15m

£675

BelfastLos Angeles

BHD - LAX

BHDLAX

Belfast City

Fri 17/7

09:35-19:45

2 stops18h 10m

Los Angeles

Fri 24/7

20:55-20:35

1 stop15h 40m

£685

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Wed 2/9

09:50-21:02

2 stops19h 12m

San Francisco

Sat 26/9

14:00-16:55

2 stops18h 55m

£710

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Tue 1/9

06:30-13:50

1 stop15h 20m

San Francisco

Sat 26/9

09:02-12:25

2 stops19h 23m

£719

BelfastOntario

BHD - ONT

BHDONT

Belfast City

Wed 2/9

10:05-21:12

2 stops19h 07m

Ontario

Fri 11/9

16:07-18:10

2 stops18h 03m

£720

BelfastLas Vegas

BHD - LAS

BHDLAS

Belfast City

Wed 7/10

10:05-20:00

1 stop17h 55m

Las Vegas Harry Reid Intl

Sun 11/10

08:53-10:30

2 stops17h 37m

£730

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Mon 29/6

07:00-00:52

2 stops25h 52m

San Francisco

Mon 6/7

06:15-13:40

2 stops23h 25m

£733

BelfastSanta Ana

BHD - SNA

BHDSNA

Belfast City

Wed 2/9

10:05-19:35

2 stops17h 30m

Santa Ana J. Wayne/Orange Cnty

Fri 11/9

16:26-18:10

2 stops17h 44m

£733

BelfastSan Francisco

BFS - SFO

BFSSFO

Belfast Intl

Mon 29/6

08:25-22:55

2 stops22h 30m

San Francisco

Mon 6/7

17:38-22:35

2 stops20h 57m

£736

Flights are sorted by cheapest return flights first.

Deals found on 29/5

Showing 1-10 of 55 resultsSorted by cheapest first
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6

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 return 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 £392). Flying from Northern Ireland to California in January is currently the most expensive (average of £530). 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.

Reviews of airlines servicing California

Get insights into the airlines that provide service to California. 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 California. Reviews last updated 2 June 2026.
Read through reviews of airlines operating flights from Northern Ireland to California, such as British Airways. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
British Airways
6.7
Okay
8,018 reviews
Check prices

Food

6.4

Entertainment

6.4

Comfort

6.8

Overall

6.7

Boarding

6.9

Crew

7.7

Reviews

1 / 20
6.0
Good

Roxanne,Sept 2025

LHR - IAD

Food was mediocre. Couldn't use headphones because no information on how to use. Staff paid so much attention on a family with a baby . They got VIP treatment.
British Airways
6.7
Okay
8,018 reviews
British Airways
6.7
Okay
8,018 reviews
Check prices

Food

6.4

Entertainment

6.4

Comfort

6.8

Overall

6.7

Boarding

6.9

Crew

7.7

Reviews

1 / 20
6.0
Good

Roxanne,Sept 2025

LHR - IAD

Food was mediocre. Couldn't use headphones because no information on how to use. Staff paid so much attention on a family with a baby . They got VIP treatment.

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?

    There are many flights that can get you from Northern Ireland to California in 15h 20m. Fly via British Airways, KLM, or American Airlines to get the fastest option. Northern Ireland and California are separated by a distance of 5038 mi. This flight may include one or multiple 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 holiday 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 £392). Flying from Northern Ireland to California in January is currently the most expensive (average of £530). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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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Top airline flying from Northern Ireland to California

Discover the top airline that operate flights from Northern Ireland to California. 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 858,174 searches. Data last updated 2 June 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£426Average£599FlexibilityNo cancel feeOn-time70%
Search British Airways flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Northern Ireland to California?

Cheapflights makes it easy to find Northern Ireland to California flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Why should you use Cheapflights to find cheap flight tickets from Northern Ireland to California?

Cheapflights simply makes it quick and affordable to book flights from Northern Ireland to California by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from Northern Ireland to California with no change fees?

Need flexible booking options for your flight to California from Northern Ireland? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from Northern Ireland to California become cheaper?

Yes! Start tracking prices for Northern Ireland to California flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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