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Cheap flights from Northern Ireland to California from £277

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 15/9. Fares are subject to change and may not be available on all flights or dates of travel.
BFS — LAX
9 Jul — 16 Jul1
1 adult

Cheap 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 4 July 2025.

Round-trip from

£377

One-way from

£277

Popular in

August

Cheapest in

March

Average price

£570
9/9-20/9
  • 9/9-20/9
  • 2 total stops
  • 60h 05m total
  • Northern Ireland to California
15/9
  • 15/9
  • 2 total stops
  • 44h 47m total
  • Northern Ireland to California
Highest demand for flights based on searches. 11% potential increase in price (£59 potential increase over avg. return price).
Cheapest flight prices on average. 6% potential price decrease (£29 potential savings vs. average return price).
Average for round-trip flights in July 2025

Find flight deals from Northern Ireland to California

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 4 July 2025.

Tue 9/920:55BFS - LAX
1 stop25h 15mMultiple Airlines
Sat 20/915:05LAX - BFS
1 stop34h 50mMultiple Airlines
Deal found 2/7£377
Mon 15/919:30BHD - SFO
1 stop26h 20mBritish Airways
Sun 21/922:43SFO - BHD
2 stops26h 07mBritish Airways
Deal found 30/6£425
Wed 19/1106:35BHD - LAX
1 stop16h 45mBritish Airways
Sun 23/1120:55LAX - BHD
1 stop13h 45mBritish Airways
Deal found 2/7£429
Tue 9/914:20BHD - LAX
1 stop31h 50mMultiple Airlines
Sat 20/915:05LAX - BHD
1 stop14h 40mMultiple Airlines
Deal found 2/7£449
Mon 15/919:30BHD - SFO
2 stops31h 05mMultiple Airlines
Sun 21/922:43SFO - BHD
2 stops26h 07mMultiple Airlines
Deal found 30/6£473
Wed 19/1106:30BHD - LAX
2 stops40h 45mVirgin Atlantic
Sun 23/1117:05LAX - BHD
2 stops39h 45mVirgin Atlantic
Deal found 3/7£509
Thu 20/1117:20BHD - LAX
1 stop26h 25mDelta
Mon 24/1109:20LAX - BHD
2 stops23h 30mDelta
Deal found 3/7£532
Mon 25/806:30BHD - SFO
1 stop13h 15mDelta
Tue 2/907:05SFO - BHD
2 stops25h 50mDelta
Deal found 3/7£540
Sat 13/1217:20BHD - SFO
2 stops31h 02mVirgin Atlantic
Thu 25/1210:35SFO - BHD
2 stops22h 15mVirgin Atlantic
Deal found 2/7£580
Mon 25/806:45BFS - SFO
1 stop20h 45mMultiple Airlines
Tue 2/921:20SFO - BFS
1 stop17h 50mMultiple Airlines
Deal found 3/7£588
Sat 16/805:45BFS - LAS
2 stops24h 10mMultiple Airlines
Sat 23/809:55LAS - BFS
2 stops28h 35mMultiple Airlines
Deal found 2/7£638
Sun 17/822:40BFS - SNA
2 stops26h 33mMultiple Airlines
Sun 24/812:03SNA - BFS
2 stops26h 57mMultiple Airlines
Deal found 3/7£690

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 4 July 2025.
Use the filters below to find and compare flights from Northern Ireland to California that are best for you.

Fly from

Northern Ireland

Fly to

California

Route

Depart

Return

Price

BelfastLos Angeles

BFS - LAX

BFSLAX

Belfast Intl

Tue 9/9

20:55-14:10

1 stop25h 15m

Los Angeles

Sat 20/9

15:05-09:55

1 stop34h 50m

£377

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Mon 15/9

19:30-13:50

1 stop26h 20m

San Francisco

Sun 21/9

22:43-08:50

2 stops26h 07m

£425

BelfastLos Angeles

BHD - LAX

BHDLAX

Belfast City

Wed 19/11

06:35-15:20

1 stop16h 45m

Los Angeles

Sun 23/11

20:55-18:40

1 stop13h 45m

£429

BelfastLos Angeles

BHD - LAX

BHDLAX

Belfast City

Tue 9/9

14:20-14:10

1 stop31h 50m

Los Angeles

Sat 20/9

15:05-13:45

1 stop14h 40m

£449

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Mon 15/9

19:30-18:35

2 stops31h 05m

San Francisco

Sun 21/9

22:43-08:50

2 stops26h 07m

£473

BelfastLos Angeles

BHD - LAX

BHDLAX

Belfast City

Wed 19/11

06:30-15:15

2 stops40h 45m

Los Angeles

Sun 23/11

17:05-16:50

2 stops39h 45m

£509

BelfastLos Angeles

BHD - LAX

BHDLAX

Belfast City

Thu 20/11

17:20-11:45

1 stop26h 25m

Los Angeles

Mon 24/11

09:20-16:50

2 stops23h 30m

£532

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Mon 25/8

06:30-11:45

1 stop13h 15m

San Francisco

Tue 2/9

07:05-16:55

2 stops25h 50m

£540

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Sat 13/12

17:20-16:22

2 stops31h 02m

San Francisco

Thu 25/12

10:35-16:50

2 stops22h 15m

£580

BelfastSan Francisco

BFS - SFO

BFSSFO

Belfast Intl

Mon 25/8

06:45-19:30

1 stop20h 45m

San Francisco

Tue 2/9

21:20-23:10

1 stop17h 50m

£588

Flights are sorted by cheapest return flights first.

Deals found on 2/7

Showing 1-10 of 34 results
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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, January is the cheapest month in which you can book a flight from Northern Ireland to California (average of £575). Flying from Northern Ireland to California in July is currently the most expensive (average of £811). 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.

What is the cheapest time of day to fly from NIR to CA?

Find hourly flight availability from Northern Ireland to California. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 4 July 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Northern Ireland to California as you normally would.

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 4 July 2025.
Read through reviews of airlines operating flights from Northern Ireland to California, such as Delta, KLM, andVirgin Atlantic. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Entertainment

7.9

Crew

8.5

Food

7.3

Comfort

7.9

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
8.0
Very Good

Entertainment

7.9

Crew

8.5

Food

7.3

Comfort

7.9

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Entertainment

7.9

Crew

8.5

Food

7.3

Comfort

7.9

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Entertainment

7.9

Crew

8.5

Food

7.3

Comfort

7.9

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Entertainment

7.9

Crew

8.5

Food

7.3

Comfort

7.9

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Entertainment

7.9

Crew

8.5

Food

7.3

Comfort

7.9

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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.
  • 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, January is the cheapest month in which you can book a flight from Northern Ireland to California (average of £575). Flying from Northern Ireland to California in July is currently the most expensive (average of £811). 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.

Top 2 airlines flying from Northern Ireland to California

Discover the top 2 airlines 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 4 July 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£380Average£581FlexibilityNo cancel feeOn-time70%
Search British Airways flights
American AirlinesCheapest£464Average£515FlexibilityNo cancel feeOn-time71%
Search American Airlines flights

Fly with Cheapflights

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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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