Cheap flights from Northern Ireland to California from £277
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 15/9. Fares are subject to change and may not be available on all flights or dates of travel.
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 4 July 2025.
Find flight deals from Northern Ireland to California
Cheapest flights from Northern Ireland to CaliforniaExplore 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 4 July 2025.
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 4 July 2025.
Cheapflights Fare Finder
Customise 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 858,174 searches. Data last updated 4 July 2025.
Use the filters below to find and compare flights from Northern Ireland to California that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
BelfastLos Angeles
BFS - LAX
BFSLAX
Belfast Intl
Tue 9/9
20:55-14:10
1 stop25h 15m
Los Angeles
Sat 20/9
15:05-09:55
1 stop34h 50m
BelfastSan Francisco
BHD - SFO
BHDSFO
Belfast City
Mon 15/9
19:30-13:50
1 stop26h 20m
San Francisco
Sun 21/9
22:43-08:50
2 stops26h 07m
BelfastLos Angeles
BHD - LAX
BHDLAX
Belfast City
Wed 19/11
06:35-15:20
1 stop16h 45m
Los Angeles
Sun 23/11
20:55-18:40
1 stop13h 45m
BelfastLos Angeles
BHD - LAX
BHDLAX
Belfast City
Tue 9/9
14:20-14:10
1 stop31h 50m
Los Angeles
Sat 20/9
15:05-13:45
1 stop14h 40m
BelfastSan Francisco
BHD - SFO
BHDSFO
Belfast City
Mon 15/9
19:30-18:35
2 stops31h 05m
San Francisco
Sun 21/9
22:43-08:50
2 stops26h 07m
BelfastLos Angeles
BHD - LAX
BHDLAX
Belfast City
Wed 19/11
06:30-15:15
2 stops40h 45m
Los Angeles
Sun 23/11
17:05-16:50
2 stops39h 45m
BelfastLos Angeles
BHD - LAX
BHDLAX
Belfast City
Thu 20/11
17:20-11:45
1 stop26h 25m
Los Angeles
Mon 24/11
09:20-16:50
2 stops23h 30m
BelfastSan Francisco
BHD - SFO
BHDSFO
Belfast City
Mon 25/8
06:30-11:45
1 stop13h 15m
San Francisco
Tue 2/9
07:05-16:55
2 stops25h 50m
BelfastSan Francisco
BHD - SFO
BHDSFO
Belfast City
Sat 13/12
17:20-16:22
2 stops31h 02m
San Francisco
Thu 25/12
10:35-16:50
2 stops22h 15m
BelfastSan Francisco
BFS - SFO
BFSSFO
Belfast Intl
Mon 25/8
06:45-19:30
1 stop20h 45m
San Francisco
Tue 2/9
21:20-23:10
1 stop17h 50m
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.
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 £575). Flying from Northern Ireland to California in July is currently the most expensive (average of £811). 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 NIR to CA?
Find hourly flight availability from Northern Ireland to California. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 4 July 2025.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Northern Ireland to California as you normally would.
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 4 July 2025.
Read through reviews of airlines operating flights from Northern Ireland to California, such as Delta, KLM, andVirgin Atlantic. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Entertainment
Crew
Food
Comfort
Boarding
Overall
Reviews
Kim,May 2025
PIH - SLC
Entertainment
Crew
Food
Comfort
Boarding
Overall
Reviews
Kim,May 2025
PIH - SLC
Entertainment
Crew
Food
Comfort
Boarding
Overall
Reviews
Kim,May 2025
PIH - SLC
Entertainment
Crew
Food
Comfort
Boarding
Overall
Reviews
Kim,May 2025
PIH - SLC
Entertainment
Crew
Food
Comfort
Boarding
Overall
Reviews
Kim,May 2025
PIH - SLC
Entertainment
Crew
Food
Comfort
Boarding
Overall
Reviews
Kim,May 2025
PIH - SLC
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.
Browse thousands of different options on Cheapflights for your next trip
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Alternative routes for Northern Ireland to California
See prices for flight routes from nearby airports that may be better suited for you.
Top 2 airlines flying from Northern Ireland to California
Discover the top 2 airlines that operate flights from Northern Ireland to California. 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 858,174 searches. Data last updated 4 July 2025.
Fly with Cheapflights
Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.
How does Cheapflights help users find flights from Northern Ireland to California?
Cheapflights makes it easy to find Northern Ireland to California flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.
Why should you use Cheapflights to find cheap flight tickets from Northern Ireland to California?
Cheapflights simply makes it quick and affordable to book flights from Northern Ireland to California by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.
Can Cheapflights find flights from Northern Ireland to California with no change fees?
Need flexible booking options for your flight to California from Northern Ireland? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.
Can Cheapflights notify me if prices for flights from Northern Ireland to California become cheaper?
Yes! Start tracking prices for Northern Ireland to California flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.