Cheap flights from Northern Ireland to California from £433
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 20/7. 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 13 June 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 13 June 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 13 June 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 13 June 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
BelfastSanta Ana
BHD - SNA
BHDSNA
Belfast City
Tue 2/9
06:35-19:57
2 stops21h 22m
Santa Ana J. Wayne/Orange Cnty
Tue 9/9
11:35-13:00
2 stops17h 25m
BelfastLos Angeles
BHD - LAX
BHDLAX
Belfast City
Sun 13/7
20:05-20:29
2 stops32h 24m
Los Angeles
Sun 20/7
23:59-09:20
2 stops25h 21m
BelfastLos Angeles
BHD - LAX
BHDLAX
Belfast City
Tue 23/9
20:20-14:55
1 stop26h 35m
Los Angeles
Tue 30/9
21:40-11:55
1 stop30h 15m
BelfastSan Francisco
BHD - SFO
BHDSFO
Belfast City
Wed 20/8
06:50-18:10
2 stops19h 20m
San Francisco
Fri 5/9
10:22-10:10
2 stops39h 48m
BelfastLos Angeles
BHD - LAX
BHDLAX
Belfast City
Thu 9/10
06:30-14:50
1 stop16h 20m
Los Angeles
Mon 13/10
09:57-16:55
2 stops22h 58m
BelfastSan Francisco
BHD - SFO
BHDSFO
Belfast City
Wed 20/8
06:30-11:45
1 stop13h 15m
San Francisco
Fri 5/9
13:45-21:15
1 stop23h 30m
BelfastOntario
BHD - ONT
BHDONT
Belfast City
Thu 9/10
06:30-17:17
2 stops18h 47m
Ontario
Mon 13/10
09:55-16:55
2 stops23h 00m
BelfastSanta Ana
BHD - SNA
BHDSNA
Belfast City
Thu 9/10
06:30-18:20
2 stops19h 50m
Santa Ana J. Wayne/Orange Cnty
Mon 13/10
10:45-16:55
2 stops22h 10m
BelfastSan Francisco
BHD - SFO
BHDSFO
Belfast City
Wed 2/7
16:05-09:27
2 stops25h 22m
San Francisco
Wed 9/7
19:20-18:40
1 stop15h 20m
BelfastSan Francisco
BHD - SFO
BHDSFO
Belfast City
Wed 20/8
06:30-17:59
2 stops19h 29m
San Francisco
Fri 5/9
13:45-21:15
1 stop23h 30m
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 13 June 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.
Rainfall in California by month
Plan your trip to California by taking into account the average rainfall totals by month.
In terms of precipitation, rainfall in California ranges from 0.0 - 87.0 inches per month. February is typically the wettest month, when rainfall can reach 87.0 mm. July is typically the driest time to visit California when rainfall is around 0.0 mm.
Temperature in California by month
Plan your trip to California by taking into account the average temperature totals by month.
If weather is an important factor for your trip to California, 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 23.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 14.0 C).
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 13 June 2025.
Get a feel of what it's like to fly with Delta, KLM and Finnair from Northern Ireland to California by reading reviews from past customers. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
Food
Crew
Comfort
Overall
Entertainment
Reviews
Aaron,Oct 2024
TUS - LAX
Boarding
Food
Crew
Comfort
Overall
Entertainment
Reviews
Aaron,Oct 2024
TUS - LAX
Boarding
Food
Crew
Comfort
Overall
Entertainment
Reviews
Aaron,Oct 2024
TUS - LAX
Boarding
Food
Crew
Comfort
Overall
Entertainment
Reviews
Aaron,Oct 2024
TUS - LAX
Boarding
Food
Crew
Comfort
Overall
Entertainment
Reviews
Aaron,Oct 2024
TUS - LAX
Boarding
Food
Crew
Comfort
Overall
Entertainment
Reviews
Aaron,Oct 2024
TUS - LAX
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 13 June 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.