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Cheap flights from Northern Ireland to California from £289

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 24/6. Fares are subject to change and may not be available on all flights or dates of travel.
BFS — LAX
23 Apr — 30 Apr1
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 18 April 2025.

Round-trip from

£530

One-way from

£289

Popular in

August

Cheapest in

January

Average price

£551
15/5-29/5
  • 15/5-29/5
  • 4 total stops
  • 68h 40m total
  • Northern Ireland to California
24/6
  • 24/6
  • 3 total stops
  • 43h 58m total
  • Northern Ireland to California
Highest demand for flights based on searches. 12% potential increase in price (£67 potential increase over avg. return price).
Cheapest flight prices on average. 6% potential price decrease (£31 potential savings vs. average return price).
Average for round-trip flights in April 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 18 April 2025.

Fri 25/406:35BHD - SFO
1 stop15h 15mBritish Airways
Tue 29/414:45SFO - BHD
2 stops16h 35mBritish Airways
Deal found 18/4£516
Fri 25/406:30BHD - SFO
1 stop13h 15mDelta
Tue 29/406:05SFO - BHD
2 stops26h 50mDelta
Deal found 18/4£526
Thu 15/507:10BFS - LAX
2 stops43h 55mMultiple Airlines
Thu 29/507:30LAX - BFS
2 stops24h 45mMultiple Airlines
Deal found 17/4£530
Fri 25/406:30BHD - SFO
2 stops20h 13mKLM
Tue 29/413:45SFO - BHD
2 stops19h 10mKLM
Deal found 18/4£531
Sat 26/409:35BHD - LAS
2 stops19h 23mBritish Airways
Tue 29/410:18LAS - BHD
2 stops16h 17mBritish Airways
Deal found 17/4£641
Sun 1/609:55BFS - LAS
2 stops45h 26mMultiple Airlines
Sun 8/609:43LAS - BFS
3 stops22h 12mMultiple Airlines
Deal found 16/4£739
Sat 17/516:50BFS - SFO
2 stops36h 00mMultiple Airlines
Sat 24/507:30SFO - BFS
3 stops25h 40mMultiple Airlines
Deal found 17/4£823
Sat 26/407:00BHD - LAS
3 stops34h 15mMultiple Airlines
Tue 29/407:40LAS - BHD
3 stops26h 35mMultiple Airlines
Deal found 17/4£878
Fri 25/418:00BHD - SFO
2 stops29h 55mAer Lingus
Tue 29/417:45SFO - BHD
2 stops36h 00mAer Lingus
Deal found 18/4£883
Fri 25/418:40BHD - SFO
2 stops29h 15mMultiple Airlines
Tue 29/408:20SFO - BHD
3 stops27h 35mMultiple Airlines
Deal found 18/4£1,048
Thu 23/1006:30BHD - LAX
2 stops35h 56mVirgin Atlantic
Tue 28/1017:35LAX - BHD
2 stops44h 25mVirgin Atlantic
Deal found 17/4£2,565
Thu 23/1006:35BHD - LAX
1 stop16h 20mMultiple Airlines
Tue 28/1021:55LAX - BHD
1 stop13h 45mMultiple Airlines
Deal found 17/4£2,752

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 18 April 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

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Wed 20/8

06:50-13:50

1 stop15h 00m

San Francisco

Fri 5/9

16:35-15:30

1 stop14h 55m

£592

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Wed 20/8

06:30-11:45

1 stop13h 15m

San Francisco

Fri 5/9

11:05-16:55

2 stops21h 50m

£596

BelfastLos Angeles

BFS - LAX

BFSLAX

Belfast Intl

Sun 1/6

09:55-14:00

1 stop36h 05m

Los Angeles

Sun 8/6

16:30-20:20

1 stop19h 50m

£646

BelfastLas Vegas

BFS - LAS

BFSLAS

Belfast Intl

Sun 1/6

09:55-23:21

2 stops45h 26m

Las Vegas Harry Reid Intl

Sun 8/6

09:43-15:55

3 stops22h 12m

£739

BelfastSan Francisco

BFS - SFO

BFSSFO

Belfast Intl

Sat 17/5

16:50-20:50

2 stops36h 00m

San Francisco

Sat 24/5

07:30-17:10

3 stops25h 40m

£823

BelfastLos Angeles

BHD - LAX

BHDLAX

Belfast City

Tue 2/9

06:35-13:25

1 stop14h 50m

Los Angeles

Tue 9/9

20:05-17:30

1 stop13h 25m

£3,199

BelfastLos Angeles

BHD - LAX

BHDLAX

Belfast City

Tue 2/9

06:30-11:50

1 stop13h 20m

Los Angeles

Tue 9/9

13:40-16:55

2 stops19h 15m

£3,216

BelfastLos Angeles

BHD - LAX

BHDLAX

Belfast City

Mon 1/9

17:25-11:50

1 stop26h 25m

Los Angeles

Mon 8/9

15:40-16:55

2 stops17h 15m

£3,268

BelfastLos Angeles

BHD - LAX

BHDLAX

Belfast City

Wed 3/9

06:50-14:55

1 stop16h 05m

Los Angeles

Wed 10/9

20:05-18:40

1 stop14h 35m

£3,469

BelfastLos Angeles

BHD - LAX

BHDLAX

Belfast City

Wed 3/9

06:30-17:29

2 stops18h 59m

Los Angeles

Wed 10/9

10:25-16:55

2 stops22h 30m

£3,532

Flights are sorted by cheapest return flights first.

Deals found on 17/4

Showing 1-10 of 21 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 18 April 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.

Rainfall in California by month

Plan your trip to California by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in California ranges from 0.0 - 87.0 inches per month. February is typically the wettest month, when rainfall can reach 87.0 mm. July is typically the driest time to visit California when rainfall is around 0.0 mm.

Temperature in California by month

Plan your trip to California by taking into account the average temperature totals by month.

If weather is an important factor for your trip to California, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 23.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 14.0 C).

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 18 April 2025.
Get a feel of what it's like to fly with Delta, KLM and Finnair from Northern Ireland to California by reading reviews from past customers. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Boarding

8.2

Crew

8.5

Food

7.3

Entertainment

7.9

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
8.0
Very Good

Boarding

8.2

Crew

8.5

Food

7.3

Entertainment

7.9

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Boarding

8.2

Crew

8.5

Food

7.3

Entertainment

7.9

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Boarding

8.2

Crew

8.5

Food

7.3

Entertainment

7.9

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Boarding

8.2

Crew

8.5

Food

7.3

Entertainment

7.9

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Boarding

8.2

Crew

8.5

Food

7.3

Entertainment

7.9

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

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.
  • What are the cheapest airlines to fly from Northern Ireland to California one-way?

    £529 is the cheapest one-way deal found within the past few days, from Aer Lingus. You may also be able to find cheap deals on British Airways and KLM, with prices starting from £750 and £1,256, respectively.

  • 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

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.

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 18 April 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£412Average£632FlexibilityNo 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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