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$390+ Cheap flights from Northern Ireland to California

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 9/15. Fares are subject to change and may not be available on all flights or dates of travel.
BFS — LAX
ago. 12 — ago. 191
mar. 8/12
mar. 8/19
1 adult, Economy
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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 agosto 7, 2025.

Round-trip from

$557
(Connections by easyJet)

One-way from

$390
(Kiwi.com)

Popular in

August

Cheapest in

May

Average price

$1,445
From Northern Ireland to California
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One-way flight from Northern Ireland to California
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Highest demand for flights based on searches. 11% potential increase in price ($106 potential increase over avg. RT price).
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Cheapest flight prices on average. 6% potential price decrease ($54 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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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 agosto 7, 2025.

This Connections by easyJet deal was found by Cheapflights users on 8/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Connections by easyJet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 9/219:55 amBFS - LAX
1 stop35h 10mMultiple Airlines
dom. 9/284:30 pmLAX - BFS
1 stop31h 10mMultiple Airlines
Deal found 8/7$557
This Mytrip deal was found by Cheapflights users on 8/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 9/2111:30 pmBFS - SFO
3 stops46h 05mMultiple Airlines
dom. 9/2810:15 amSFO - BFS
3 stops21h 40mMultiple Airlines
Deal found 8/7$707
This Delta deal was found by Cheapflights users on 8/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 10/316:30 amBHD - LAX
2 stops23h 19mDelta
mar. 11/411:33 amLAX - BHD
2 stops25h 27mDelta
Deal found 8/7$716
This American Airlines deal was found by Cheapflights users on 8/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 10/3111:30 amBHD - LAX
1 stop14h 55mAmerican Airlines
mar. 11/410:25 amLAX - BHD
2 stops17h 05mAmerican Airlines
Deal found 8/7$728
This American Airlines deal was found by Cheapflights users on 8/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 10/3111:30 amBHD - LAX
1 stop35h 40mMultiple Airlines
mar. 11/43:30 pmLAX - BHD
1 stop15h 20mMultiple Airlines
Deal found 8/7$773
This Mytrip deal was found by Cheapflights users on 8/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 9/204:50 pmBFS - LAS
3 stops37h 03mMultiple Airlines
sáb. 9/277:25 amLAS - BFS
3 stops31h 05mMultiple Airlines
Deal found 8/6$845
This British Airways deal was found by Cheapflights users on 8/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 8/2011:30 amBHD - SFO
2 stops19h 37mBritish Airways
vie. 9/511:32 amSFO - BHD
2 stops25h 13mBritish Airways
Deal found 8/6$871
This Mytrip deal was found by Cheapflights users on 8/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 9/46:10 amBFS - LAS
2 stops23h 09mMultiple Airlines
jue. 9/1112:11 pmLAS - BFS
2 stops19h 24mMultiple Airlines
Deal found 8/7$879
This KLM deal was found by Cheapflights users on 8/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 8/206:30 amBHD - SFO
1 stop13h 15mKLM
vie. 9/51:45 pmSFO - BHD
1 stop23h 30mKLM
Deal found 8/6$880
This Mytrip deal was found by Cheapflights users on 8/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 9/216:10 amBFS - LAS
3 stops47h 43mMultiple Airlines
dom. 9/2810:03 amLAS - BFS
2 stops26h 17mMultiple Airlines
Deal found 8/7$892
This Kiwi.com deal was found by Cheapflights users on 8/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 10/319:05 pmBFS - LAX
2 stops25h 55mMultiple Airlines
mar. 11/49:00 pmLAX - BFS
1 stop15h 15mMultiple Airlines
Deal found 8/7$896
This KLM deal was found by Cheapflights users on 8/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 9/45:25 pmBHD - LAS
1 stop33h 10mKLM
jue. 9/111:45 pmLAS - BHD
2 stops19h 10mKLM
Deal found 8/7$931

Cheapflights Fare Finder

 
Customize 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 2,558,603 searches. Data last updated agosto 7, 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

dom. 9/21

9:55 am-1:05 pm

1 stop35h 10m

Los Angeles

dom. 9/28

4:30 pm-7:40 am

1 stop31h 10m

$557

BelfastSan Francisco

BFS - SFO

BFSSFO

Belfast Intl

dom. 9/21

11:30 pm-1:35 pm

3 stops46h 05m

San Francisco

dom. 9/28

10:15 am-3:55 pm

3 stops21h 40m

$707

BelfastLos Angeles

BHD - LAX

BHDLAX

Belfast City

vie. 10/31

6:30 am-10:49 pm

2 stops23h 19m

Los Angeles

mar. 11/4

11:33 am-9:00 pm

2 stops25h 27m

$716

BelfastLos Angeles

BHD - LAX

BHDLAX

Belfast City

vie. 10/31

11:30 am-7:25 pm

1 stop14h 55m

Los Angeles

mar. 11/4

10:25 am-11:30 am

2 stops17h 05m

$728

BelfastLos Angeles

BHD - LAX

BHDLAX

Belfast City

vie. 10/31

11:30 am-4:10 pm

1 stop35h 40m

Los Angeles

mar. 11/4

3:30 pm-2:50 pm

1 stop15h 20m

$773

BelfastLas Vegas

BFS - LAS

BFSLAS

Belfast Intl

sáb. 9/20

4:50 pm-9:53 pm

3 stops37h 03m

Las Vegas Harry Reid Intl

sáb. 9/27

7:25 am-10:30 pm

3 stops31h 05m

$845

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

mié. 8/20

6:30 am-11:45 am

1 stop13h 15m

San Francisco

vie. 9/5

1:45 pm-9:15 pm

1 stop23h 30m

$868

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

mié. 8/20

6:30 am-11:45 am

1 stop13h 15m

San Francisco

vie. 9/5

9:35 am-4:55 pm

2 stops23h 20m

$869

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

mié. 8/20

11:30 am-11:07 pm

2 stops19h 37m

San Francisco

vie. 9/5

11:32 am-8:45 pm

2 stops25h 13m

$871

BelfastLas Vegas

BFS - LAS

BFSLAS

Belfast Intl

jue. 9/4

6:10 am-9:19 pm

2 stops23h 09m

Las Vegas Harry Reid Intl

jue. 9/11

12:11 pm-3:35 pm

2 stops19h 24m

$879

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/5

Showing 1-10 of 27 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 round-trip 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 $246). Flying from Northern Ireland to California in March is currently the most expensive (average of $326). 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 agosto 7, 2025.
Read reviews from past customers who have flown Delta, KLM, and American Airlines from Northern Ireland to California. 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
7,987 reviews

Comfort

7.9

Food

7.3

Boarding

8.2

Overall

8.0

Entertainment

7.9

Crew

8.5

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
Delta
8.0
Very good
7,987 reviews
Delta
8.0
Very good
7,987 reviews

Comfort

7.9

Food

7.3

Boarding

8.2

Overall

8.0

Entertainment

7.9

Crew

8.5

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
KLM
7.8
Good
1,382 reviews
Delta
8.0
Very good
7,987 reviews

Comfort

7.9

Food

7.3

Boarding

8.2

Overall

8.0

Entertainment

7.9

Crew

8.5

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
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,987 reviews

Comfort

7.9

Food

7.3

Boarding

8.2

Overall

8.0

Entertainment

7.9

Crew

8.5

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
British Airways
6.7
Okay
7,251 reviews
Delta
8.0
Very good
7,987 reviews

Comfort

7.9

Food

7.3

Boarding

8.2

Overall

8.0

Entertainment

7.9

Crew

8.5

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.

  • 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 vacation 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 $246). Flying from Northern Ireland to California in March is currently the most expensive (average of $326). 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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