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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 11/30. Fares are subject to change and may not be available on all flights or dates of travel.
BFS — LAX
ago. 5 — ago. 121
mar. 8/5
mar. 8/12
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 julio 31, 2025.

Round-trip from

$550
(Connections by easyJet)

One-way from

$390
(Kiwi.com)

Popular in

August

Cheapest in

January

Average price

$778
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 ($108 potential increase over avg. RT price).
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Cheapest flight prices on average. 6% potential price decrease ($53 potential savings vs. average RT price).
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Average for round-trip flights in July 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 julio 31, 2025.

This Connections by easyJet deal was found by Cheapflights users on 7/29. 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.
vie. 9/126:05 amBFS - LAX
1 stop16h 05mMultiple Airlines
vie. 9/194:30 pmLAX - BFS
1 stop32h 55mMultiple Airlines
Deal found 7/29$550
This Trip.com deal was found by Cheapflights users on 7/31. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 9/203:35 pmBFS - SFO
1 stop30h 40mMultiple Airlines
mié. 10/159:20 pmSFO - BFS
1 stop17h 50mMultiple Airlines
Deal found 7/31$701
This KLM deal was found by Cheapflights users on 7/31. 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.
sáb. 9/206:30 amBHD - SFO
1 stop13h 15mKLM
mié. 10/154:54 pmSFO - BHD
2 stops16h 01mKLM
Deal found 7/31$797
This Delta deal was found by Cheapflights users on 7/31. 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.
sáb. 9/206:30 amBHD - SFO
2 stops21h 11mDelta
mié. 10/151:19 pmSFO - BHD
2 stops23h 56mDelta
Deal found 7/31$803
This British Airways deal was found by Cheapflights users on 7/31. 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. 9/52:17 pmSFO - BHD
2 stops22h 28mBritish Airways
Deal found 7/31$874
This Mytrip deal was found by Cheapflights users on 7/30. 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. 9/1310:35 amBFS - LAS
3 stops42h 26mMultiple Airlines
sáb. 9/207:25 amLAS - BFS
3 stops31h 05mMultiple Airlines
Deal found 7/30$913
This Mytrip deal was found by Cheapflights users on 7/31. 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. 9/206:55 amBHD - SFO
3 stops34h 35mMultiple Airlines
mié. 10/154:20 pmSFO - BHD
2 stops19h 15mMultiple Airlines
Deal found 7/31$987
This Mytrip deal was found by Cheapflights users on 7/30. 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. 7/317:05 amBHD - LAX
1 stop14h 55mMultiple Airlines
jue. 8/74:30 pmLAX - BHD
1 stop19h 55mMultiple Airlines
Deal found 7/30$1,484
This Netflights deal was found by Cheapflights users on 7/30. 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 Netflights is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 9/136:30 amBHD - SFO
1 stop13h 15mVirgin Atlantic
sáb. 9/201:45 pmSFO - BHD
1 stop23h 30mVirgin Atlantic
Deal found 7/30$6,212

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 julio 31, 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

vie. 9/12

6:05 am-2:10 pm

1 stop16h 05m

Los Angeles

vie. 9/19

4:30 pm-9:25 am

1 stop32h 55m

$550

BelfastSan Francisco

BFS - SFO

BFSSFO

Belfast Intl

sáb. 9/20

3:35 pm-2:15 pm

1 stop30h 40m

San Francisco

mié. 10/15

9:20 pm-11:10 pm

1 stop17h 50m

$701

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

sáb. 9/20

6:30 am-11:45 am

1 stop13h 15m

San Francisco

mié. 10/15

4:54 pm-4:55 pm

2 stops16h 01m

$797

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

sáb. 9/20

6:30 am-7:41 pm

2 stops21h 11m

San Francisco

mié. 10/15

1:19 pm-9:15 pm

2 stops23h 56m

$803

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

mié. 8/20

11:30 am-11:07 pm

2 stops19h 37m

San Francisco

vie. 9/5

2:17 pm-8:45 pm

2 stops22h 28m

$874

BelfastLas Vegas

BFS - LAS

BFSLAS

Belfast Intl

sáb. 9/13

10:35 am-9:01 pm

3 stops42h 26m

Las Vegas Harry Reid Intl

sáb. 9/20

7:25 am-10:30 pm

3 stops31h 05m

$913

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

sáb. 9/20

6:55 am-9:30 am

3 stops34h 35m

San Francisco

mié. 10/15

4:20 pm-7:35 pm

2 stops19h 15m

$987

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

sáb. 9/13

6:30 am-11:45 am

1 stop13h 15m

San Francisco

sáb. 9/20

1:45 pm-9:15 pm

1 stop23h 30m

$6,212

BelfastLos Angeles

BFS - LAX

BFSLAX

Belfast Intl

dom. 11/30

3:45 pm-11:27 am

2 stops51h 42m

$390

BelfastLos Angeles

BHD - LAX

BHDLAX

Belfast City

dom. 11/30

8:25 pm-11:27 am

2 stops47h 02m

$580

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/30

Showing 1-10 of 11 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 julio 31, 2025.
Read reviews from past customers who have flown Delta, KLM, and Virgin Atlantic 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
7,981 reviews

Comfort

7.9

Boarding

8.2

Food

7.3

Crew

8.5

Overall

8.0

Entertainment

7.9

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
7,981 reviews
Delta
8.0
Very good
7,981 reviews

Comfort

7.9

Boarding

8.2

Food

7.3

Crew

8.5

Overall

8.0

Entertainment

7.9

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
1,383 reviews
Delta
8.0
Very good
7,981 reviews

Comfort

7.9

Boarding

8.2

Food

7.3

Crew

8.5

Overall

8.0

Entertainment

7.9

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
Virgin Atlantic
7.4
Good
655 reviews
Delta
8.0
Very good
7,981 reviews

Comfort

7.9

Boarding

8.2

Food

7.3

Crew

8.5

Overall

8.0

Entertainment

7.9

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
6.6
Okay
7,222 reviews
Delta
8.0
Very good
7,981 reviews

Comfort

7.9

Boarding

8.2

Food

7.3

Crew

8.5

Overall

8.0

Entertainment

7.9

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