Cheap flights from California to Northern Ireland from £194
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 6/7. Fares are subject to change and may not be available on all flights or dates of travel.
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 13 June 2025.
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 13 June 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 13 June 2025.
Cheapflights Fare Finder
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 13 June 2025.
Use the filters below to find and compare flights from California to Northern Ireland that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
Los AngelesBelfast
LAX - BFS
LAXBFS
Los Angeles
Fri 22/8
16:30-08:00
1 stop31h 30m
Belfast Intl
Wed 3/9
22:05-14:00
1 stop23h 55m
Los AngelesBelfast
LAX - BHD
LAXBHD
Los Angeles
Tue 7/10
15:40-13:00
1 stop13h 20m
Belfast City
Wed 22/10
06:50-13:25
1 stop14h 35m
Los AngelesBelfast
LAX - BHD
LAXBHD
Los Angeles
Wed 15/10
14:51-15:35
2 stops16h 44m
Belfast City
Thu 23/10
06:35-17:35
1 stop19h 00m
San FranciscoBelfast
SFO - BHD
SFOBHD
San Francisco
Tue 16/9
16:35-15:20
1 stop14h 45m
Belfast City
Tue 30/9
16:25-13:50
1 stop29h 25m
Los AngelesBelfast
LAX - BHD
LAXBHD
Los Angeles
Sun 3/8
16:50-21:15
1 stop20h 25m
Belfast City
Mon 18/8
17:25-11:50
1 stop26h 25m
Los AngelesBelfast
LAX - BHD
LAXBHD
Los Angeles
Thu 16/10
14:51-18:45
2 stops19h 54m
Belfast City
Thu 23/10
06:35-18:05
1 stop19h 30m
San FranciscoBelfast
SFO - BHD
SFOBHD
San Francisco
Tue 16/9
08:58-10:35
2 stops17h 37m
Belfast City
Tue 30/9
09:35-23:33
2 stops21h 58m
Los AngelesBelfast
LAX - BHD
LAXBHD
Los Angeles
Sun 3/8
15:05-16:55
2 stops17h 50m
Belfast City
Mon 18/8
17:25-11:50
1 stop26h 25m
OntarioBelfast
ONT - BHD
ONTBHD
Ontario
Sun 3/8
14:37-17:40
2 stops19h 03m
Belfast City
Mon 18/8
06:40-18:24
2 stops19h 44m
San FranciscoBelfast
SFO - BHD
SFOBHD
San Francisco
Mon 13/10
19:20-17:30
1 stop14h 10m
Belfast City
Thu 16/10
06:45-16:30
2 stops17h 45m
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.
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, 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 13 June 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 13 June 2025.
To help decide which airline to fly from California to Northern Ireland, see what other customers have to say about Delta, KLM and Air France. 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.
Food
Boarding
Entertainment
Overall
Comfort
Crew
Reviews
Aaron,Oct 2024
LAX - LHR
Food
Boarding
Entertainment
Overall
Comfort
Crew
Reviews
Aaron,Oct 2024
LAX - LHR
Food
Boarding
Entertainment
Overall
Comfort
Crew
Reviews
Aaron,Oct 2024
LAX - LHR
Food
Boarding
Entertainment
Overall
Comfort
Crew
Reviews
Aaron,Oct 2024
LAX - LHR
Food
Boarding
Entertainment
Overall
Comfort
Crew
Reviews
Aaron,Oct 2024
LAX - LHR
Food
Boarding
Entertainment
Overall
Comfort
Crew
Reviews
Aaron,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.
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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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Why should you use Cheapflights to find cheap flight tickets from California to Northern Ireland?
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Can Cheapflights find flights from California to Northern Ireland with no change fees?
Users can book flights with no change fees policies with our dedicated filters. Book flights from California to Northern Ireland flexibly with Cheapflights today.
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