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Cheap flights from Northern Ireland to California from £300

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 13/10. Fares are subject to change and may not be available on all flights or dates of travel.
BFS — LAX
29 Aug — 5 Sep1
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 30 July 2026.

Thu 1/1009:35
BHD
-
LAX
1 stop16h 50m
British Airways
Fri 9/1019:26
LAX
-
BHD
2 stops17h 09m
British Airways
Deal found 27/7£596
Tue 8/906:15
BFS
-
LAX
2 stops18h 15m
Multiple Airlines
Tue 15/919:35
LAX
-
BFS
2 stops17h 30m
Multiple Airlines
Deal found 26/7£599
Mon 31/806:30
BHD
-
LAX
1 stop15h 20m
British Airways
Mon 21/917:10
LAX
-
BHD
1 stop14h 20m
British Airways
Deal found 29/7£609
Fri 4/906:30
BHD
-
SFO
1 stop15h 20m
British Airways
Mon 7/919:30
SFO
-
BHD
1 stop15h 55m
British Airways
Deal found 29/7£618
Mon 31/817:30
BHD
-
LAX
1 stop29h 15m
KLM
Mon 21/906:10
LAX
-
BHD
2 stops26h 45m
KLM
Deal found 29/7£621
Mon 31/806:30
BHD
-
SFO
1 stop15h 20m
British Airways
Mon 21/916:35
SFO
-
BHD
1 stop16h 55m
British Airways
Deal found 29/7£622
Thu 10/917:30
BHD
-
LAX
1 stop26h 20m
Delta
Thu 17/911:15
LAX
-
BHD
2 stops21h 40m
Delta
Deal found 27/7£623
Mon 31/817:30
BHD
-
LAX
2 stops30h 32m
Virgin Atlantic
Mon 21/906:40
LAX
-
BHD
2 stops18h 40m
Virgin Atlantic
Deal found 29/7£626
Thu 27/806:30
BHD
-
LAX
2 stops19h 14m
British Airways
Sat 5/916:43
LAX
-
BHD
2 stops17h 32m
British Airways
Deal found 27/7£627
Tue 13/1020:25
BHD
-
SFO
1 stop25h 25m
British Airways
Wed 21/1016:35
SFO
-
BHD
1 stop15h 05m
British Airways
Deal found 29/7£628
Thu 27/809:15
BFS
-
LAX
1 stop20h 10m
Multiple Airlines
Sat 5/923:15
LAX
-
BFS
1 stop15h 25m
Multiple Airlines
Deal found 27/7£630
Wed 23/913:50
BFS
-
SFO
2 stops32h 50m
Multiple Airlines
Wed 30/916:45
SFO
-
BFS
2 stops21h 35m
Multiple Airlines
Deal found 29/7£636

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 30 July 2026.

Round-trip from

£596

One-way from

£300

Popular in

June

Cheapest in

October

Average price

£563
British Airways
  • British Airways
  • 1/10-9/10
  • 3 total stops
  • 33h 59m total
  • Northern Ireland to California
Search Deals
13/10
  • 13/10
  • 3 total stops
  • 41h 35m total
  • Northern Ireland to California
Search Deals
Highest demand for flights based on searches. 5% potential increase in price (£26 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (£24 potential savings vs. average return price).
Search Deals
Average for round-trip flights in July 2026
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 30 July 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

BHD - LAX

BHDLAX

Belfast City

Thu 1/10

09:35-18:25

1 stop16h 50m

Los Angeles

Fri 9/10

21:00-18:10

1 stop13h 10m

£597

BelfastLos Angeles

BFS - LAX

BFSLAX

Belfast Intl

Tue 8/9

06:15-16:30

2 stops18h 15m

Los Angeles

Tue 15/9

19:35-21:05

2 stops17h 30m

£599

BelfastLos Angeles

BHD - LAX

BHDLAX

Belfast City

Mon 31/8

17:30-16:02

2 stops30h 32m

Los Angeles

Mon 21/9

06:40-09:20

2 stops18h 40m

£626

BelfastLos Angeles

BHD - LAX

BHDLAX

Belfast City

Thu 27/8

06:30-17:44

2 stops19h 14m

Los Angeles

Sat 5/9

16:43-18:15

2 stops17h 32m

£627

BelfastLos Angeles

BFS - LAX

BFSLAX

Belfast Intl

Thu 27/8

09:15-21:25

1 stop20h 10m

Los Angeles

Sat 5/9

23:15-22:40

1 stop15h 25m

£630

BelfastSan Francisco

BFS - SFO

BFSSFO

Belfast Intl

Wed 23/9

13:50-14:40

2 stops32h 50m

San Francisco

Wed 30/9

16:45-22:20

2 stops21h 35m

£636

BelfastLos Angeles

BHD - LAX

BHDLAX

Belfast City

Thu 1/10

09:50-22:10

2 stops20h 20m

Los Angeles

Fri 9/10

23:55-09:15

2 stops25h 20m

£642

BelfastOntario

BHD - ONT

BHDONT

Belfast City

Tue 15/9

16:25-20:07

2 stops35h 42m

Ontario

Wed 14/10

16:29-19:50

2 stops19h 21m

£644

BelfastOntario

BHD - ONT

BHDONT

Belfast City

Wed 30/9

20:35-23:36

2 stops35h 01m

Ontario

Wed 14/10

16:29-19:50

2 stops19h 21m

£644

BelfastLos Angeles

BHD - LAX

BHDLAX

Belfast City

Thu 27/8

06:30-14:55

1 stop16h 25m

Los Angeles

Sat 5/9

18:05-18:15

1 stop16h 10m

£651

Flights are sorted by cheapest return flights first.

Deals found on 25/7

Showing 1-10 of 54 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, October is the cheapest month in which you can book a flight from Northern Ireland to California (average of £486). Flying from Northern Ireland to California in March is currently the most expensive (average of £1,282). 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 30 July 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
8,127 reviews
Check prices

Comfort

6.8

Crew

7.7

Entertainment

6.5

Overall

6.7

Food

6.4

Boarding

7.0

Reviews

1 / 20
6.0
Good

Anonymous,May 2025

LHR - LAX

We needed assistance (wheelchair, golf cart, whatever ) to get to next gate. We requested it. None was provided.
British Airways
6.7
Okay
8,127 reviews
British Airways
6.7
Okay
8,127 reviews
Check prices

Comfort

6.8

Crew

7.7

Entertainment

6.5

Overall

6.7

Food

6.4

Boarding

7.0

Reviews

1 / 20
6.0
Good

Anonymous,May 2025

LHR - LAX

We needed assistance (wheelchair, golf cart, whatever ) to get to next gate. We requested it. None was provided.

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 16h 50m. Fly via British Airways, Virgin Atlantic, or KLM to get the fastest option. Northern Ireland and California are separated by a distance of 5128 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, October is the cheapest month in which you can book a flight from Northern Ireland to California (average of £486). Flying from Northern Ireland to California in March is currently the most expensive (average of £1,282). 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

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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 30 July 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£460Average£602FlexibilityNo 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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