$251+ Cheap flights from California to Northern Ireland
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 7/9. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — BFS
Jun 17 — Jun 241
1 adult, Economy
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1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.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 June 12, 2025.
Round-trip from | $616 (Kiwi.com) |
|---|---|
One-way from | $251 (Kiwi.com) |
Popular in | June |
Cheapest in | November |
Average price | $1,093 |
Find flight deals from California to Northern Ireland
Cheapest flights from California to Northern IrelandExplore 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 June 12, 2025.
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 June 12, 2025.
This Kiwi.com deal was found by Cheapflights users on 6/12. 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.
Fri 8/224:30 pmLAX - BFS
1 stop31h 30mMultiple Airlines
Wed 9/310:05 pmBFS - LAX
1 stop23h 55mMultiple Airlines
Deal found 6/12![Multiple Airlines logo]()
$616
This American Airlines deal was found by Cheapflights users on 6/9. 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.
Wed 10/87:20 pmSFO - BHD
1 stop17h 25mAmerican Airlines
Tue 10/146:35 amBHD - SFO
1 stop15h 15mAmerican Airlines
Deal found 6/9![American Airlines logo]()
$630
This Cheapflightsfares deal was found by Cheapflights users on 6/10. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/151:25 pmLAX - BHD
1 stop14h 30mBritish Airways
Thu 10/236:35 amBHD - LAX
1 stop14h 50mBritish Airways
Deal found 6/10![British Airways logo]()
$634
This American Airlines deal was found by Cheapflights users on 6/10. 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.
Wed 10/152:51 pmLAX - BHD
2 stops16h 44mAmerican Airlines
Thu 10/2312:40 pmBHD - LAX
1 stop15h 35mAmerican Airlines
Deal found 6/10![American Airlines logo]()
$663
This Gotogate deal was found by Cheapflights users on 6/11. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/34:50 pmLAX - BHD
1 stop20h 25mVirgin Atlantic
Mon 8/185:25 pmBHD - LAX
1 stop26h 25mVirgin Atlantic
Deal found 6/11![Virgin Atlantic logo]()
$704
This Iberia deal was found by Cheapflights users on 6/11. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/162:51 pmLAX - BHD
2 stops19h 54mIberia
Thu 10/236:35 amBHD - LAX
1 stop19h 30mIberia
Deal found 6/11![Iberia logo]()
$714
This FlightHub deal was found by Cheapflights users on 6/11. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/168:58 amSFO - BHD
2 stops17h 37mBritish Airways
Tue 9/309:35 amBHD - SFO
2 stops21h 58mBritish Airways
Deal found 6/11![British Airways logo]()
$717
This Bravofly deal was found by Cheapflights users on 6/11. 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 Bravofly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/33:05 pmLAX - BHD
2 stops17h 50mMultiple Airlines
Mon 8/185:25 pmBHD - LAX
1 stop26h 25mMultiple Airlines
Deal found 6/11![Multiple Airlines logo]()
$730
This Trip.com deal was found by Cheapflights users on 6/9. 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.
Wed 10/84:30 pmSFO - BFS
1 stop22h 40mMultiple Airlines
Tue 10/146:45 amBFS - SFO
1 stop18h 40mMultiple Airlines
Deal found 6/9![Multiple Airlines logo]()
$756
This Mytrip deal was found by Cheapflights users on 6/9. 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.
Wed 10/810:15 amSFO - BHD
3 stops26h 55mMultiple Airlines
Tue 10/147:05 amBHD - SFO
3 stops41h 58mMultiple Airlines
Deal found 6/9![Multiple Airlines logo]()
$930
This Mytrip deal was found by Cheapflights users on 6/10. 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.
Fri 7/259:12 amLAS - BFS
2 stops26h 53mMultiple Airlines
Fri 8/14:40 pmBFS - LAS
3 stops36h 50mMultiple Airlines
Deal found 6/10![Multiple Airlines logo]()
$1,015
This Gurufare deal was found by Cheapflights users on 6/10. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/65:45 pmSFO - BHD
2 stops18h 10mAer Lingus
Thu 10/96:50 pmBHD - SFO
2 stops29h 05mAer Lingus
Deal found 6/10![Aer Lingus logo]()
$1,192
Cheapflights Fare Finder
Customize 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 2,558,603 searches. Data last updated June 12, 2025.
Use the filters below to find and compare flights from California to Northern Ireland that are best for you.
Fly from
California
Fly to
Northern Ireland
Route
Depart
Return
Price
Los AngelesBelfast
LAX - BFS
LAXBFS
Los Angeles
Fri 8/22
4:30 pm-8:00 am
1 stop31h 30m
Belfast Intl
Wed 9/3
10:05 pm-2:00 pm
1 stop23h 55m
$616
San FranciscoBelfast
SFO - BHD
SFOBHD
San Francisco
Wed 10/8
7:20 pm-8:45 pm
1 stop17h 25m
Belfast City
Tue 10/14
6:35 am-1:50 pm
1 stop15h 15m
$630
Los AngelesBelfast
LAX - BHD
LAXBHD
Los Angeles
Wed 10/15
1:25 pm-11:55 am
1 stop14h 30m
Belfast City
Thu 10/23
6:35 am-1:25 pm
1 stop14h 50m
$634
Los AngelesBelfast
LAX - BHD
LAXBHD
Los Angeles
Wed 10/15
2:51 pm-3:35 pm
2 stops16h 44m
Belfast City
Thu 10/23
12:40 pm-8:15 pm
1 stop15h 35m
$663
Los AngelesBelfast
LAX - BHD
LAXBHD
Los Angeles
Sun 8/3
4:50 pm-9:15 pm
1 stop20h 25m
Belfast City
Mon 8/18
5:25 pm-11:50 am
1 stop26h 25m
$704
Los AngelesBelfast
LAX - BHD
LAXBHD
Los Angeles
Thu 10/16
2:51 pm-6:45 pm
2 stops19h 54m
Belfast City
Thu 10/23
6:35 am-6:05 pm
1 stop19h 30m
$714
San FranciscoBelfast
SFO - BHD
SFOBHD
San Francisco
Tue 9/16
8:58 am-10:35 am
2 stops17h 37m
Belfast City
Tue 9/30
9:35 am-11:33 pm
2 stops21h 58m
$717
Los AngelesBelfast
LAX - BHD
LAXBHD
Los Angeles
Sun 8/3
3:05 pm-4:55 pm
2 stops17h 50m
Belfast City
Mon 8/18
5:25 pm-11:50 am
1 stop26h 25m
$730
San FranciscoBelfast
SFO - BFS
SFOBFS
San Francisco
Wed 10/8
4:30 pm-11:10 pm
1 stop22h 40m
Belfast Intl
Tue 10/14
6:45 am-5:25 pm
1 stop18h 40m
$756
San FranciscoBelfast
SFO - BHD
SFOBHD
San Francisco
Wed 10/8
10:15 am-9:10 pm
3 stops26h 55m
Belfast City
Tue 10/14
7:05 am-5:03 pm
3 stops41h 58m
$930
Showing 1-10 of 27 results
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 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 California to Northern Ireland
What is the cheapest month to book a flight from California to Northern Ireland?
Currently, February is the cheapest month in which you can book a flight from California to Northern Ireland (average of $657). Flying from California to Northern Ireland in June is currently the most expensive (average of $1,189). 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 June 12, 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 2.0 - 3.5 inches per month. October is typically the wettest month, when rainfall can reach 3.5 in. April is typically the driest time to visit Northern Ireland when rainfall is around 2.0 in.
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 60.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 41.0 F).
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 June 12, 2025.
Read through reviews of airlines operating flights from California to Northern Ireland, such as Delta, KLM and Finnair. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Entertainment
7.9
Boarding
8.2
Comfort
7.9
Food
7.3
Overall
8.0
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
LAX - LHR
Entertainment
7.9
Boarding
8.2
Comfort
7.9
Food
7.3
Overall
8.0
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
LAX - LHR
Entertainment
7.9
Boarding
8.2
Comfort
7.9
Food
7.3
Overall
8.0
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
LAX - LHR
Entertainment
7.9
Boarding
8.2
Comfort
7.9
Food
7.3
Overall
8.0
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
LAX - LHR
Entertainment
7.9
Boarding
8.2
Comfort
7.9
Food
7.3
Overall
8.0
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
LAX - LHR
Entertainment
7.9
Boarding
8.2
Comfort
7.9
Food
7.3
Overall
8.0
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
LAX - LHR
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.
Browse thousands of different options on Cheapflights for your next trip
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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.
Top 2 airlines flying from California to Northern Ireland
Discover the top 2 airlines that operate flights from California to Northern Ireland. 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 2,558,603 searches. Data last updated June 12, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$493 | Average$880 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$588 | Average$815 | FlexibilityNo cancel fee | On-time70% |