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Cheap flights from Northern Ireland to California from £339

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 17/9. Fares are subject to change and may not be available on all flights or dates of travel.
BFS — LAX
23 Jul — 30 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 23 June 2026.

Thu 17/909:50
BHD
-
LAS
1 stop16h 45m
Virgin Atlantic
Mon 21/920:25
LAS
-
BHD
1 stop12h 30m
Virgin Atlantic
Deal found 23/6£339
Wed 2/920:35
BHD
-
LAX
1 stop25h 15m
British Airways
Sun 6/920:55
LAX
-
BHD
1 stop15h 40m
British Airways
Deal found 19/6£566
Thu 3/906:30
BHD
-
ONT
2 stops19h 45m
British Airways
Mon 7/916:07
ONT
-
BHD
2 stops18h 38m
British Airways
Deal found 19/6£570
Sat 12/1211:35
BHD
-
LAX
2 stops21h 15m
British Airways
Fri 18/1214:54
LAX
-
BHD
2 stops20h 21m
British Airways
Deal found 21/6£571
Wed 7/1006:30
BHD
-
SFO
1 stop15h 20m
British Airways
Sat 10/1016:35
SFO
-
BHD
1 stop17h 40m
British Airways
Deal found 21/6£597
Thu 8/1006:30
BHD
-
SNA
2 stops21h 09m
British Airways
Mon 12/1008:00
SNA
-
BHD
2 stops23h 30m
British Airways
Deal found 19/6£613
Tue 14/706:30
BHD
-
LAX
2 stops21h 03m
British Airways
Tue 21/720:55
LAX
-
BHD
1 stop15h 40m
British Airways
Deal found 19/6£614
Wed 4/1112:25
BHD
-
SFO
1 stop14h 10m
British Airways
Sun 8/1117:25
SFO
-
BHD
1 stop17h 15m
British Airways
Deal found 22/6£637
Thu 9/709:50
BHD
-
SFO
2 stops22h 43m
Delta
Mon 13/710:35
SFO
-
BHD
2 stops22h 20m
Delta
Deal found 23/6£642
Sat 27/617:30
BHD
-
LAS
1 stop33h 05m
Delta
Sat 4/713:35
LAS
-
BHD
2 stops19h 20m
Delta
Deal found 19/6£659
Mon 20/709:50
BHD
-
SFO
2 stops22h 43m
Delta
Mon 27/709:20
SFO
-
BHD
2 stops23h 35m
Delta
Deal found 22/6£664
Mon 24/821:55
BFS
-
LAX
2 stops26h 55m
Multiple Airlines
Mon 31/819:10
LAX
-
BFS
2 stops17h 45m
Multiple Airlines
Deal found 20/6£679

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 23 June 2026.

Round-trip from

£339

Popular in

June

Cheapest in

October

Average price

£922
Virgin Atlantic
  • Virgin Atlantic
  • 17/9-21/9
  • 2 total stops
  • 29h 15m total
  • Northern Ireland to California
Search Deals
Highest demand for flights based on searches. 6% potential increase in price (£33 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 June 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 23 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
Fastest return journey

BelfastLas Vegas

BHD - LAS

BHDLAS

Belfast City

Thu 17/9

09:50-18:35

1 stop16h 45m

Las Vegas Harry Reid Intl

Mon 21/9

20:25-16:55

1 stop12h 30m

£339

BelfastLos Angeles

BHD - LAX

BHDLAX

Belfast City

Wed 2/9

20:35-13:50

1 stop25h 15m

Los Angeles Los Angeles

Sun 6/9

20:55-20:35

1 stop15h 40m

£566

BelfastLos Angeles

BHD - LAX

BHDLAX

Belfast City

Sat 12/12

18:00-13:30

1 stop27h 30m

Los Angeles Los Angeles

Fri 18/12

14:54-19:15

2 stops20h 21m

£567

BelfastOntario

BHD - ONT

BHDONT

Belfast City

Thu 3/9

06:30-18:15

2 stops19h 45m

Ontario

Mon 7/9

16:07-18:45

2 stops18h 38m

£570

BelfastOntario

BHD - ONT

BHDONT

Belfast City

Thu 10/9

09:35-22:43

2 stops21h 08m

Ontario

Mon 14/9

14:22-18:45

2 stops20h 23m

£570

BelfastSanta Ana

BHD - SNA

BHDSNA

Belfast City

Thu 8/10

06:30-19:39

2 stops21h 09m

Santa Ana J. Wayne/Orange Cnty

Mon 12/10

08:00-15:30

2 stops23h 30m

£613

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Wed 4/11

09:15-18:35

1 stop17h 20m

San Francisco

Sun 8/11

20:35-18:40

1 stop14h 05m

£636

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Wed 7/10

06:30-13:50

1 stop15h 20m

San Francisco

Sat 10/10

16:35-18:15

1 stop17h 40m

£637

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Thu 9/7

09:50-00:33

2 stops22h 43m

San Francisco

Mon 13/7

10:35-16:55

2 stops22h 20m

£642

BelfastLos Angeles

BFS - LAX

BFSLAX

Belfast Intl

Mon 24/8

21:55-16:50

2 stops26h 55m

Los Angeles Los Angeles

Mon 31/8

19:10-20:55

2 stops17h 45m

£682

Flights are sorted by cheapest return flights first.

Deals found on 22/6

Showing 1-10 of 50 resultsSorted by cheapest first
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5

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, August is the cheapest month in which you can book a flight from Northern Ireland to California (average of £434). Flying from Northern Ireland to California in June is currently the most expensive (average of £589). 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.

How much does it cost for a return flight from Northern Ireland to California?

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 23 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
8,065 reviews
Check prices

Entertainment

6.4

Boarding

6.9

Crew

7.7

Comfort

6.8

Food

6.4

Overall

6.7

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
8,065 reviews
British Airways
6.7
Okay
8,065 reviews
Check prices

Entertainment

6.4

Boarding

6.9

Crew

7.7

Comfort

6.8

Food

6.4

Overall

6.7

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 16h 45m. Fly via Virgin Atlantic or British Airways to get the fastest option. Northern Ireland and California are separated by a distance of 4902 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, August is the cheapest month in which you can book a flight from Northern Ireland to California (average of £434). Flying from Northern Ireland to California in June is currently the most expensive (average of £589). 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 23 June 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£434Average£620FlexibilityNo 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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