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Cheap flights from California to Northern Ireland from £208

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 1/4. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — BFS
26 Feb — 5 Mar1
1 adult

Cheap flight deals from California to Northern Ireland

Keep the following information in mind while searching for California to Northern Ireland flight deals. Data was last updated 21 February 2025.

Round-trip from

£524

One-way from

£208

Popular in

July

Cheapest in

November

Average price

£703
British Airways
  • British Airways
  • 20/3-27/3
  • 2 total stops
  • 32h 40m total
  • California to Northern Ireland
Search Deals
1/4
  • 1/4
  • 3 total stops
  • 59h 45m total
  • California to Northern Ireland
Search Deals
Highest demand for flights based on searches. 16% potential increase in price (£106 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (£27 potential savings vs. average return price).
Search Deals
Average for round-trip flights in February 2025
Search Deals

Find flight deals from California to Northern Ireland

Cheapest flights from California to Northern Ireland
Explore the most affordable flight options available from California to Northern Ireland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 21 February 2025.

Wed 15/1013:25LAX - BHD
1 stop14h 30mBritish Airways
Thu 23/1006:35BHD - LAX
1 stop16h 20mBritish Airways
Deal found 20/2£477
Wed 15/1017:17LAX - BHD
2 stops17h 23mAmerican Airlines
Thu 23/1006:35BHD - LAX
1 stop16h 20mAmerican Airlines
Deal found 20/2£499
Sun 16/321:40SFO - BHD
1 stop14h 00mBritish Airways
Sun 23/306:30BHD - SFO
1 stop16h 30mBritish Airways
Deal found 21/2£524
Wed 15/1010:55ONT - BHD
2 stops18h 35mBritish Airways
Thu 23/1006:35BHD - ONT
2 stops19h 10mBritish Airways
Deal found 20/2£554
Sat 3/514:46SFO - BHD
2 stops18h 29mAmerican Airlines
Sat 10/509:35BHD - SFO
2 stops20h 16mAmerican Airlines
Deal found 21/2£577
Fri 19/915:00ONT - BHD
2 stops21h 45mIberia
Fri 26/906:35BHD - ONT
2 stops25h 01mIberia
Deal found 20/2£604
Thu 20/313:24LAX - BFS
2 stops24h 16mMultiple Airlines
Thu 27/306:30BFS - LAX
2 stops39h 18mMultiple Airlines
Deal found 20/2£610
Thu 20/305:35LAX - BHD
3 stops31h 55mMultiple Airlines
Thu 27/307:30BHD - LAX
2 stops35h 16mMultiple Airlines
Deal found 20/2£667
Thu 6/313:50SFO - BHD
1 stop23h 10mKLM
Sat 15/317:20BHD - SFO
1 stop26h 30mKLM
Deal found 21/2£810
Sat 3/523:05LAX - BHD
2 stops28h 25mFinnair
Thu 8/516:20BHD - LAX
2 stops38h 22mFinnair
Deal found 20/2£826
Fri 21/312:48SJC - BHD
2 stops21h 27mBritish Airways
Tue 1/406:35BHD - SJC
2 stops22h 50mBritish Airways
Deal found 20/2£852
Sat 5/419:05SFO - BFS
2 stops20h 20mMultiple Airlines
Sat 12/413:05BFS - SFO
2 stops40h 32mMultiple Airlines
Deal found 20/2£862

Find flights from California to Northern Ireland within your budget

Customise your flight search to find flights from California to Northern Ireland 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 21 February 2025.

Fly from

California

Fly to

Northern Ireland

Route

Depart

Return

Price

Los AngelesBelfast

LAX - BHD

LAXBHD

Los Angeles

Thu 20/3

18:20-16:40

1 stop15h 20m

Belfast City

Thu 27/3

11:05-21:25

1 stop17h 20m

£524

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Sun 16/3

21:40-18:40

1 stop14h 00m

Belfast City

Sun 23/3

06:30-16:00

1 stop16h 30m

£524

Los AngelesBelfast

LAX - BHD

LAXBHD

Los Angeles

Thu 20/3

11:15-10:20

2 stops16h 05m

Belfast City

Thu 27/3

09:00-21:25

1 stop19h 25m

£536

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Sat 3/5

14:46-17:15

2 stops18h 29m

Belfast City

Sat 10/5

09:35-21:51

2 stops20h 16m

£577

Los AngelesBelfast

LAX - BFS

LAXBFS

Los Angeles

Thu 20/3

13:24-20:40

2 stops24h 16m

Belfast Intl

Thu 27/3

06:30-14:48

2 stops39h 18m

£610

Los AngelesBelfast

LAX - BHD

LAXBHD

Los Angeles

Thu 20/3

05:35-20:30

3 stops31h 55m

Belfast City

Thu 27/3

07:30-11:46

2 stops35h 16m

£667

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Thu 6/3

13:50-21:00

1 stop23h 10m

Belfast City

Sat 15/3

17:20-12:50

1 stop26h 30m

£810

Los AngelesBelfast

LAX - BHD

LAXBHD

Los Angeles

Sat 3/5

23:05-11:30

2 stops28h 25m

Belfast City

Thu 8/5

16:20-22:42

2 stops38h 22m

£826

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Sat 3/5

07:00-10:10

2 stops19h 10m

Belfast City

Thu 8/5

12:40-21:58

2 stops17h 18m

£827

San JoseBelfast

SJC - BHD

SJCBHD

San Jose

Fri 21/3

12:48-17:15

2 stops21h 27m

Belfast City

Tue 1/4

06:35-21:25

2 stops22h 50m

£852

Flights are sorted by cheapest return flights first.

Deals found on 20/2

Showing 1-10 of 26 results
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Best time to book a flight from California to Northern Ireland

Have a flexible travel schedule? Discover the best time to fly to Northern Ireland from California 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.

Travel insights for flights from California to Northern Ireland

Get recent, data-driven insights about flights from California to Northern Ireland including ideal travel times, pricing trends, and more.

What is the cheapest month to book a flight from California to Northern Ireland?

Currently, January is the cheapest month in which you can book a flight from California to Northern Ireland (average of £67). Flying from California to Northern Ireland in July is currently the most expensive (average of £90). 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 CA to NIR?

Find hourly flight availability from California to Northern Ireland. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 21 February 2025.

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

Rainfall in Northern Ireland by month

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

In terms of precipitation, rainfall in Northern Ireland ranges from 50.0 - 90.0 inches per month. October is typically the wettest month, when rainfall can reach 90.0 mm. April is typically the driest time to visit Northern Ireland when rainfall is around 50.0 mm.

Temperature in Northern Ireland by month

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

If weather is an important factor for your trip to Northern Ireland, 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 16.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 5.0 C).

Reviews of airlines servicing Northern Ireland

Get insights into the airlines that provide service to Northern Ireland. 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 Northern Ireland. Reviews last updated 21 February 2025.
To help decide which airline to fly from California to Northern Ireland, see what other customers have to say about Delta, KLM and Finnair. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very Good
8,212 reviews
Check prices

Entertainment

7.9

Boarding

8.2

Overall

8.0

Comfort

8.0

Food

7.3

Crew

8.5

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Delta
8.0
Very Good
8,212 reviews
Delta
8.0
Very Good
8,212 reviews
Check prices

Entertainment

7.9

Boarding

8.2

Overall

8.0

Comfort

8.0

Food

7.3

Crew

8.5

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

KLM
7.8
Good
1,333 reviews
Delta
8.0
Very Good
8,212 reviews
Check prices

Entertainment

7.9

Boarding

8.2

Overall

8.0

Comfort

8.0

Food

7.3

Crew

8.5

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Finnair
7.6
Good
1,273 reviews
Delta
8.0
Very Good
8,212 reviews
Check prices

Entertainment

7.9

Boarding

8.2

Overall

8.0

Comfort

8.0

Food

7.3

Crew

8.5

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very Good
8,212 reviews
Check prices

Entertainment

7.9

Boarding

8.2

Overall

8.0

Comfort

8.0

Food

7.3

Crew

8.5

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Aer Lingus
7.0
Good
1,070 reviews
Delta
8.0
Very Good
8,212 reviews
Check prices

Entertainment

7.9

Boarding

8.2

Overall

8.0

Comfort

8.0

Food

7.3

Crew

8.5

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

Find useful and relevant information for your journey from California to Northern Ireland. 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 California to Northern Ireland one-way?

    The cheapet airlines for a one-way flight from California to Northern Ireland are British Airways (£315), Delta (£354), and KLM (£528).

  • Can I find deals for flights from California to Northern Ireland that include hotel bookings?

    Yes. In addition to deals on California to Northern Ireland flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from California to Northern Ireland?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from California to Northern Ireland.

  • Can I find deals for business class flights from California to Northern Ireland?

    Yes. Cheapflights offers flight deals from California to Northern Ireland 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 California to Northern Ireland?

    Currently, January is the cheapest month in which you can book a flight from California to Northern Ireland (average of £67). Flying from California to Northern Ireland in July is currently the most expensive (average of £90). 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

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Alternative routes for California to Northern Ireland

See prices for flight routes from nearby airports that may be better suited for you.
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