$455+ 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 6/1. Fares are subject to change and may not be available on all flights or dates of travel.
Find cheap flights from Northern Ireland to California with Cheapflights
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
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
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 Northern Ireland to California
Keep the following information in mind while searching for Northern Ireland to California flight deals. Data was last updated March 31, 2025.
Round-trip from | $610 (TravelUp) |
|---|---|
One-way from | $455 (Mytrip) |
Popular in | August |
Cheapest in | January |
Average price | $706 |
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 March 31, 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 March 31, 2025.
This Expedia deal was found by Cheapflights users on 3/30. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This TravelUp deal was found by Cheapflights users on 3/31. 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 TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This TravelUp deal was found by Cheapflights users on 3/30. 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 TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This American Airlines deal was found by Cheapflights users on 3/31. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This KLM deal was found by Cheapflights users on 3/30. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This American Airlines deal was found by Cheapflights users on 3/31. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Finnair deal was found by Cheapflights users on 3/30. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Delta deal was found by Cheapflights users on 3/31. 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.
This Iberia deal was found by Cheapflights users on 3/30. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Trip.com deal was found by Cheapflights users on 3/30. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Connections by easyJet deal was found by Cheapflights users on 3/31. 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 Connections by easyJet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This TravelUp deal was found by Cheapflights users on 3/31. 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 TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
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 March 31, 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
BHD - LAX
BHDLAX
Belfast City
Thu 5/15
12:40 pm-8:15 pm
1 stop15h 35m
Los Angeles
Thu 5/22
9:30 pm-8:45 pm
1 stop15h 15m
BelfastLos Angeles
BHD - LAX
BHDLAX
Belfast City
Thu 5/15
12:40 pm-11:49 pm
2 stops19h 09m
Los Angeles
Thu 5/22
9:30 pm-7:20 pm
1 stop13h 50m
BelfastSan Francisco
BHD - SFO
BHDSFO
Belfast City
Tue 4/22
6:35 am-1:50 pm
1 stop15h 15m
San Francisco
Tue 4/29
7:30 pm-7:25 pm
1 stop15h 55m
BelfastSan Francisco
BHD - SFO
BHDSFO
Belfast City
Wed 4/23
5:25 pm-11:45 am
1 stop26h 20m
San Francisco
Mon 4/28
1:45 pm-9:15 pm
1 stop23h 30m
BelfastSan Francisco
BHD - SFO
BHDSFO
Belfast City
Tue 4/22
6:35 am-1:50 pm
1 stop15h 15m
San Francisco
Tue 4/29
1:07 pm-3:20 pm
2 stops18h 13m
BelfastSan Francisco
BHD - SFO
BHDSFO
Belfast City
Tue 4/22
8:20 pm-1:50 pm
1 stop25h 30m
San Francisco
Tue 4/29
5:29 pm-7:25 pm
2 stops17h 56m
BelfastSan Francisco
BHD - SFO
BHDSFO
Belfast City
Thu 4/24
6:35 am-12:10 am
2 stops25h 35m
San Francisco
Fri 5/2
1:07 pm-6:15 pm
2 stops21h 08m
BelfastSan Francisco
BHD - SFO
BHDSFO
Belfast City
Mon 4/21
6:30 am-11:45 am
1 stop13h 15m
San Francisco
Mon 4/28
1:45 pm-4:55 pm
2 stops19h 10m
BelfastSan Francisco
BFS - SFO
BFSSFO
Belfast Intl
Sun 4/27
7:00 am-11:45 am
2 stops36h 45m
San Francisco
Sun 5/4
9:20 pm-11:10 pm
1 stop17h 50m
BelfastLos Angeles
BFS - LAX
BFSLAX
Belfast Intl
Thu 5/15
9:10 pm-2:10 pm
1 stop25h 00m
Los Angeles
Thu 5/22
9:25 pm-4:40 pm
1 stop35h 15m
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 $246). Flying from Northern Ireland to California in June is currently the most expensive (average of $328). 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.
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 - 3.4 inches per month. February is typically the wettest month, when rainfall can reach 3.4 in. July is typically the driest time to visit California when rainfall is around 0.0 in.
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 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 57.2 F).
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 March 31, 2025.
Read reviews from past customers who have flown Delta, KLM and American Airlines from Northern Ireland to California. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Crew
Boarding
Food
Comfort
Entertainment
Overall
Reviews
Aaron,Oct 2024
TUS - LAX
Crew
Boarding
Food
Comfort
Entertainment
Overall
Reviews
Aaron,Oct 2024
TUS - LAX
Crew
Boarding
Food
Comfort
Entertainment
Overall
Reviews
Aaron,Oct 2024
TUS - LAX
Crew
Boarding
Food
Comfort
Entertainment
Overall
Reviews
Aaron,Oct 2024
TUS - LAX
Crew
Boarding
Food
Comfort
Entertainment
Overall
Reviews
Aaron,Oct 2024
TUS - LAX
Crew
Boarding
Food
Comfort
Entertainment
Overall
Reviews
Aaron,Oct 2024
TUS - LAX