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Cheap flights from Northern Ireland to California from £358

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 14/9. Fares are subject to change and may not be available on all flights or dates of travel.
BFS — LAX
1 Sep — 8 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 2 August 2026.

Mon 14/920:55
BFS
-
LAX
2 stops27h 35m
Multiple Airlines
Mon 21/917:30
LAX
-
BFS
2 stops21h 50m
Multiple Airlines
Deal found 31/7£600
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£601
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£609
Mon 31/817:30
BHD
-
LAX
1 stop29h 15m
KLM
Mon 21/906:10
LAX
-
BHD
2 stops26h 45m
KLM
Deal found 29/7£613
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£614
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£618
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£620
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£627
Fri 4/1213:45
BHD
-
SFO
2 stops18h 58m
British Airways
Tue 22/1217:25
SFO
-
BHD
1 stop13h 25m
British Airways
Deal found 30/7£629
Fri 4/906:30
BHD
-
SFO
1 stop15h 20m
British Airways
Sat 19/913:29
SFO
-
BHD
2 stops17h 36m
British Airways
Deal found 30/7£638
Sun 13/921:10
BFS
-
LAX
2 stops27h 20m
Multiple Airlines
Sun 20/917:30
LAX
-
BFS
2 stops21h 05m
Multiple Airlines
Deal found 30/7£641
Wed 2/1206:35
BHD
-
LAX
1 stop16h 45m
British Airways
Sun 6/1218:25
LAX
-
BHD
1 stop14h 25m
British Airways
Deal found 28/7£644

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 August 2026.

Round-trip from

£600

One-way from

£358

Popular in

June

Cheapest in

October

Average price

£603
14/9-21/9
  • 14/9-21/9
  • 4 total stops
  • 49h 25m total
  • Northern Ireland to California
Search Deals
14/9
  • 14/9
  • 3 total stops
  • 52h 15m 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 (£23 potential savings vs. average return price).
Search Deals
Average for round-trip flights in August 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 2 August 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

Mon 14/9

20:55-16:30

2 stops27h 35m

Los Angeles Los Angeles

Mon 21/9

17:30-23:20

2 stops21h 50m

£600

BelfastLos Angeles

BHD - LAX

BHDLAX

Belfast City

Mon 31/8

17:30-16:02

2 stops30h 32m

Los Angeles Los Angeles

Mon 21/9

06:40-09:20

2 stops18h 40m

£618

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

£627

BelfastLos Angeles

BFS - LAX

BFSLAX

Belfast Intl

Sun 13/9

21:10-16:30

2 stops27h 20m

Los Angeles Los Angeles

Sun 20/9

17:30-22:35

2 stops21h 05m

£641

BelfastLos Angeles

BHD - LAX

BHDLAX

Belfast City

Wed 2/12

06:35-15:20

1 stop16h 45m

Los Angeles Los Angeles

Sun 6/12

18:25-16:50

1 stop14h 25m

£644

BelfastSanta Ana

BHD - SNA

BHDSNA

Belfast City

Mon 31/8

06:30-20:50

2 stops22h 20m

Santa Ana J. Wayne/Orange Cnty

Mon 21/9

11:34-12:55

2 stops17h 21m

£646

BelfastOntario

BHD - ONT

BHDONT

Belfast City

Wed 25/11

17:40-18:57

2 stops33h 17m

Ontario

Sun 29/11

14:22-16:50

2 stops18h 28m

£648

BelfastSanta Ana

BHD - SNA

BHDSNA

Belfast City

Wed 30/9

06:30-20:12

2 stops21h 42m

Santa Ana J. Wayne/Orange Cnty

Sun 4/10

09:25-14:35

2 stops21h 10m

£648

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Mon 31/8

06:30-18:00

2 stops19h 30m

San Francisco

Mon 21/9

13:27-15:30

2 stops18h 03m

£654
Fastest return journey

BelfastLos Angeles

BHD - LAX

BHDLAX

Belfast City

Thu 3/12

09:05-15:50

1 stop14h 45m

Los Angeles Los Angeles

Mon 7/12

17:30-16:05

1 stop14h 35m

£660

Flights are sorted by cheapest return flights first.

Deals found on 30/7

Showing 1-10 of 60 resultsSorted by cheapest first
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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 £480). Flying from Northern Ireland to California in March is currently the most expensive (average of £1,265). 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 August 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
8,135 reviews
Check prices

Comfort

6.8

Food

6.4

Entertainment

6.5

Overall

6.7

Crew

7.7

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
8,135 reviews
British Airways
6.7
Okay
8,135 reviews
Check prices

Comfort

6.8

Food

6.4

Entertainment

6.5

Overall

6.7

Crew

7.7

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 45m. Fly via Virgin Atlantic or British Airways 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 £480). Flying from Northern Ireland to California in March is currently the most expensive (average of £1,265). 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 2 August 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£454Average£622FlexibilityNo 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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