$649+ Cheap flights from California to Northern Ireland
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/15. Fares are subject to change and may not be available on all flights or dates of travel.
Find cheap flights from California to Northern Ireland 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 California to Northern Ireland
Keep the following information in mind while searching for California to Northern Ireland flight deals. Data was last updated April 29, 2025.
Round-trip from | $649 (Connections by easyJet) |
|---|---|
Popular in | June |
Cheapest in | November |
Average price | $817 |
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 April 29, 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 April 29, 2025.
This Connections by easyJet deal was found by Cheapflights users on 4/29. 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 Iberia deal was found by Cheapflights users on 4/29. 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 American Airlines deal was found by Cheapflights users on 4/29. 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 Orbitz deal was found by Cheapflights users on 4/29. 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 Orbitz 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 4/29. 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 American Airlines deal was found by Cheapflights users on 4/28. 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 oojo deal was found by Cheapflights users on 4/29. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This oojo deal was found by Cheapflights users on 4/29. 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 oojo 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 4/29. 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 Trip.com deal was found by Cheapflights users on 4/29. 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 KLM deal was found by Cheapflights users on 4/29. 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 Delta deal was found by Cheapflights users on 4/28. 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.
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 April 29, 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 - BHD
LAXBHD
Los Angeles
Wed 10/15
4:30 pm-3:05 pm
1 stop14h 35m
Belfast City
Thu 10/23
8:15 pm-2:10 pm
1 stop25h 55m
Los AngelesBelfast
LAX - BHD
LAXBHD
Los Angeles
Wed 10/15
8:05 pm-6:40 pm
1 stop14h 35m
Belfast City
Thu 10/23
6:35 am-5:35 pm
1 stop19h 00m
Los AngelesBelfast
LAX - BHD
LAXBHD
Los Angeles
Wed 10/15
1:30 pm-1:30 pm
2 stops16h 00m
Belfast City
Thu 10/23
12:40 pm-8:15 pm
1 stop15h 35m
San FranciscoBelfast
SFO - BHD
SFOBHD
San Francisco
Wed 10/1
7:20 pm-6:40 pm
1 stop15h 20m
Belfast City
Mon 10/13
6:30 pm-1:50 pm
1 stop27h 20m
San FranciscoBelfast
SFO - BHD
SFOBHD
San Francisco
Wed 10/1
10:16 am-11:55 am
2 stops17h 39m
Belfast City
Mon 10/13
6:40 am-1:50 pm
1 stop15h 10m
San FranciscoBelfast
SFO - BHD
SFOBHD
San Francisco
Tue 7/8
7:20 pm-7:25 pm
1 stop16h 05m
Belfast City
Tue 9/16
8:20 pm-1:50 pm
1 stop25h 30m
Los AngelesBelfast
LAX - BHD
LAXBHD
Los Angeles
Thu 10/16
10:38 am-11:10 am
2 stops16h 32m
Belfast City
Thu 10/23
12:40 pm-11:20 pm
2 stops18h 40m
Las VegasBelfast
LAS - BHD
LASBHD
Las Vegas Harry Reid Intl
Sun 8/31
12:13 pm-2:40 pm
2 stops18h 27m
Belfast City
Sat 9/6
7:00 pm-9:03 pm
2 stops34h 03m
Las VegasBelfast
LAS - BHD
LASBHD
Las Vegas Harry Reid Intl
Sun 8/31
8:25 pm-4:55 pm
1 stop12h 30m
Belfast City
Sat 9/6
5:25 pm-6:35 pm
1 stop33h 10m
Los AngelesBelfast
LAX - BFS
LAXBFS
Los Angeles
Thu 6/12
4:30 pm-8:35 pm
1 stop20h 05m
Belfast Intl
Mon 6/16
6:10 am-2:00 pm
1 stop15h 50m
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, 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 April 29, 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 April 29, 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.
Food
Overall
Comfort
Boarding
Crew
Entertainment
Reviews
Aaron,Oct 2024
LAX - LHR
Food
Overall
Comfort
Boarding
Crew
Entertainment
Reviews
Aaron,Oct 2024
LAX - LHR
Food
Overall
Comfort
Boarding
Crew
Entertainment
Reviews
Aaron,Oct 2024
LAX - LHR
Food
Overall
Comfort
Boarding
Crew
Entertainment
Reviews
Aaron,Oct 2024
LAX - LHR
Food
Overall
Comfort
Boarding
Crew
Entertainment
Reviews
Aaron,Oct 2024
LAX - LHR
Food
Overall
Comfort
Boarding
Crew
Entertainment
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.
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 April 29, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$493 | Average$912 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$588 | Average$950 | FlexibilityNo cancel fee | On-time70% |