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$251+ Cheap flights from Irvine, CA to Belfast

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 7/9. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — BHD
juin 17 — juin 241
mar. 6/17
mar. 6/24
1 adult, Economy
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Cheap flight deals from Irvine to Belfast

Keep the following information in mind while searching for Irvine to Belfast flight deals. Data was last updated juin 12, 2025.

Round-trip from

$616
(Kiwi.com)

One-way from

$251
(Kiwi.com)

Popular in

June

Cheapest in

November

Average price

$1,093
From Irvine to Belfast
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One-way flight from Irvine to Belfast
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Highest demand for flights based on searches. 16% potential increase in price ($165 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($24 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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Find flight deals from Irvine to Belfast

Cheapest flights from Irvine to Belfast
Explore the most affordable flight options available from Irvine to Belfast. Find the lowest fares from popular airlines and budget airlines, with prices last updated on juin 12, 2025.

This Kiwi.com deal was found by Cheapflights users on 6/12. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ven. 8/224:30 pmLAX - BFS
1 stop31h 30mMultiple Airlines
mer. 9/310:05 pmBFS - LAX
1 stop23h 55mMultiple Airlines
Deal found 6/12$616
This Cheapflightsfares deal was found by Cheapflights users on 6/10. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mer. 10/151:25 pmLAX - BHD
1 stop14h 30mBritish Airways
jeu. 10/236:35 amBHD - LAX
1 stop14h 50mBritish Airways
Deal found 6/10$634
This American Airlines deal was found by Cheapflights users on 6/10. 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.
mer. 10/152:51 pmLAX - BHD
2 stops16h 44mAmerican Airlines
jeu. 10/2312:40 pmBHD - LAX
1 stop15h 35mAmerican Airlines
Deal found 6/10$663
This Gotogate deal was found by Cheapflights users on 6/11. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dim. 8/34:50 pmLAX - BHD
1 stop20h 25mVirgin Atlantic
lun. 8/185:25 pmBHD - LAX
1 stop26h 25mVirgin Atlantic
Deal found 6/11$704
This Iberia deal was found by Cheapflights users on 6/11. 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.
jeu. 10/162:51 pmLAX - BHD
2 stops19h 54mIberia
jeu. 10/236:35 amBHD - LAX
1 stop19h 30mIberia
Deal found 6/11$714
This Bravofly deal was found by Cheapflights users on 6/11. 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 Bravofly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dim. 8/33:05 pmLAX - BHD
2 stops17h 50mMultiple Airlines
lun. 8/185:25 pmBHD - LAX
1 stop26h 25mMultiple Airlines
Deal found 6/11$730
This KLM deal was found by Cheapflights users on 6/11. 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.
mer. 7/25:10 pmLAX - BHD
2 stops15h 45mKLM
mer. 7/95:25 pmBHD - LAX
1 stop26h 25mKLM
Deal found 6/11$1,350

Cheapflights Fare Finder

Customize your flight search to find flights from Irvine to Belfast 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 juin 12, 2025.
Use the filters below to find and compare flights from Irvine to Belfast that are best for you.

Fly from

Irvine

Fly to

Belfast

Route

Depart

Return

Price

Los AngelesBelfast

LAX - BFS

LAXBFS

Los Angeles

ven. 8/22

4:30 pm-8:00 am

1 stop31h 30m

Belfast Intl

mer. 9/3

10:05 pm-2:00 pm

1 stop23h 55m

$616

Los AngelesBelfast

LAX - BHD

LAXBHD

Los Angeles

mer. 10/15

1:25 pm-11:55 am

1 stop14h 30m

Belfast City

jeu. 10/23

6:35 am-1:25 pm

1 stop14h 50m

$634

Los AngelesBelfast

LAX - BHD

LAXBHD

Los Angeles

mer. 10/15

2:51 pm-3:35 pm

2 stops16h 44m

Belfast City

jeu. 10/23

12:40 pm-8:15 pm

1 stop15h 35m

$663

Los AngelesBelfast

LAX - BHD

LAXBHD

Los Angeles

dim. 8/3

4:50 pm-9:15 pm

1 stop20h 25m

Belfast City

lun. 8/18

5:25 pm-11:50 am

1 stop26h 25m

$704

Los AngelesBelfast

LAX - BHD

LAXBHD

Los Angeles

jeu. 10/16

2:51 pm-6:45 pm

2 stops19h 54m

Belfast City

jeu. 10/23

6:35 am-6:05 pm

1 stop19h 30m

$714

Los AngelesBelfast

LAX - BHD

LAXBHD

Los Angeles

dim. 8/3

3:05 pm-4:55 pm

2 stops17h 50m

Belfast City

lun. 8/18

5:25 pm-11:50 am

1 stop26h 25m

$730

Los AngelesBelfast

LAX - BHD

LAXBHD

Los Angeles

mer. 7/2

5:10 pm-4:55 pm

2 stops15h 45m

Belfast City

mer. 7/9

5:25 pm-11:50 am

1 stop26h 25m

$1,350

Los AngelesBelfast

LAX - BFS

LAXBFS

Los Angeles

mer. 7/9

9:25 pm-2:30 pm

1 stop33h 05m

$251

Los AngelesBelfast

LAX - BHD

LAXBHD

Los Angeles

mer. 7/9

9:25 pm-9:50 am

2 stops52h 25m

$302

Los AngelesBelfast

LAX - BHD

LAXBHD

Los Angeles

mar. 7/8

12:59 am-12:40 pm

2 stops27h 41m

$686

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

Best time to book a flight from Irvine to Belfast

Have a flexible travel schedule? Discover the best time to fly to Belfast from Irvine with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Irvine to Belfast

What is the cheapest month to book a flight from Irvine to Belfast?

Currently, February is the cheapest month in which you can book a flight from Irvine to Belfast (average of $657). Flying from Irvine to Belfast 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 IR9 to BFS?

Find hourly flight availability from Irvine to Belfast. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated juin 12, 2025.

When flying from Irvine to Belfast, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Rainfall in Belfast by month

Plan your trip to Belfast by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Belfast 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 Belfast when rainfall is around 2.0 in.

Temperature in Belfast by month

Plan your trip to Belfast by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Belfast, 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 Belfast

Get insights into the airlines that provide service to Belfast. 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 Belfast. Reviews last updated juin 12, 2025.
KLM
7.8
Good
1,358 reviews

Entertainment

7.1

Crew

8.4

Overall

7.8

Comfort

7.7

Boarding

7.8

Food

7.2

Reviews

1 / 20
8.0
Excellent

Allan,Jun 2025

YYZ - AMS

I always enjoy flying KLM. Service is attentive, friendly and professional. The seat, when fully reclined is a little hard; some kind of mattress or topper would be helpful here. The dinner was really not very good …. “Meatless meatballs” tasted quite peculiar. Breakfast which consisted of an egg white omelette in flour tortilla was also rather tasteless.
KLM
7.8
Good
1,358 reviews
KLM
7.8
Good
1,358 reviews

Entertainment

7.1

Crew

8.4

Overall

7.8

Comfort

7.7

Boarding

7.8

Food

7.2

Reviews

1 / 20
8.0
Excellent

Allan,Jun 2025

YYZ - AMS

I always enjoy flying KLM. Service is attentive, friendly and professional. The seat, when fully reclined is a little hard; some kind of mattress or topper would be helpful here. The dinner was really not very good …. “Meatless meatballs” tasted quite peculiar. Breakfast which consisted of an egg white omelette in flour tortilla was also rather tasteless.
Virgin Atlantic
7.4
Good
652 reviews
KLM
7.8
Good
1,358 reviews

Entertainment

7.1

Crew

8.4

Overall

7.8

Comfort

7.7

Boarding

7.8

Food

7.2

Reviews

1 / 20
8.0
Excellent

Allan,Jun 2025

YYZ - AMS

I always enjoy flying KLM. Service is attentive, friendly and professional. The seat, when fully reclined is a little hard; some kind of mattress or topper would be helpful here. The dinner was really not very good …. “Meatless meatballs” tasted quite peculiar. Breakfast which consisted of an egg white omelette in flour tortilla was also rather tasteless.
American Airlines
7.2
Good
10,000 reviews
KLM
7.8
Good
1,358 reviews

Entertainment

7.1

Crew

8.4

Overall

7.8

Comfort

7.7

Boarding

7.8

Food

7.2

Reviews

1 / 20
8.0
Excellent

Allan,Jun 2025

YYZ - AMS

I always enjoy flying KLM. Service is attentive, friendly and professional. The seat, when fully reclined is a little hard; some kind of mattress or topper would be helpful here. The dinner was really not very good …. “Meatless meatballs” tasted quite peculiar. Breakfast which consisted of an egg white omelette in flour tortilla was also rather tasteless.
Iberia
7.0
Good
2,776 reviews
KLM
7.8
Good
1,358 reviews

Entertainment

7.1

Crew

8.4

Overall

7.8

Comfort

7.7

Boarding

7.8

Food

7.2

Reviews

1 / 20
8.0
Excellent

Allan,Jun 2025

YYZ - AMS

I always enjoy flying KLM. Service is attentive, friendly and professional. The seat, when fully reclined is a little hard; some kind of mattress or topper would be helpful here. The dinner was really not very good …. “Meatless meatballs” tasted quite peculiar. Breakfast which consisted of an egg white omelette in flour tortilla was also rather tasteless.
British Airways
6.6
Okay
7,008 reviews
KLM
7.8
Good
1,358 reviews

Entertainment

7.1

Crew

8.4

Overall

7.8

Comfort

7.7

Boarding

7.8

Food

7.2

Reviews

1 / 20
8.0
Excellent

Allan,Jun 2025

YYZ - AMS

I always enjoy flying KLM. Service is attentive, friendly and professional. The seat, when fully reclined is a little hard; some kind of mattress or topper would be helpful here. The dinner was really not very good …. “Meatless meatballs” tasted quite peculiar. Breakfast which consisted of an egg white omelette in flour tortilla was also rather tasteless.

Related info for your journey

Find useful and relevant information for your journey from Irvine to Belfast. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • Can I find deals for flights from Irvine to Belfast that include hotel bookings?

    Yes. In addition to deals on Irvine to Belfast flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Irvine to Belfast?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Irvine to Belfast.

  • Can I find deals for business class flights from Irvine to Belfast?

    Yes. Cheapflights offers flight deals from Irvine to Belfast by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Irvine to Belfast?

    Currently, February is the cheapest month in which you can book a flight from Irvine to Belfast (average of $657). Flying from Irvine to Belfast 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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 2 airlines flying from Irvine to Belfast

Discover the top 2 airlines that operate flights from Irvine to Belfast. 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 juin 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$599Average$958FlexibilityNo cancel feeOn-time70%
American AirlinesCheapest$703Average$934FlexibilityNo cancel feeOn-time71%

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