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$303+ 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 9/12. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — BHD
Apr 15 — Apr 221
Tue 4/15
Tue 4/22
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 April 10, 2025.

Round-trip from

$532
(Connections by easyJet)

One-way from

$341
(Kiwi.com)

Popular in

June

Cheapest in

November

Average price

$817
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. 9% potential increase in price ($85 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($15 potential savings vs. average RT price).
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Average for round-trip flights in April 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 April 10, 2025.

This Connections by easyJet deal was found by Cheapflights users on 4/9. 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.
Thu 5/89:25 pmLAX - BFS
1 stop35h 15mMultiple Airlines
Sun 5/182:55 pmBFS - LAX
1 stop36h 10mMultiple Airlines
Deal found 4/9$532
This Trip.com deal was found by Cheapflights users on 4/9. 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.
Fri 5/94:30 pmLAX - BHD
1 stop19h 55mMultiple Airlines
Fri 5/167:00 amBHD - LAX
1 stop15h 10mMultiple Airlines
Deal found 4/9$587
This Cheapflightsfares deal was found by Cheapflights users on 4/9. 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.
Wed 10/151:25 pmLAX - BHD
1 stop16h 05mBritish Airways
Thu 10/236:35 amBHD - LAX
1 stop19h 00mBritish Airways
Deal found 4/9$605
This American Airlines deal was found by Cheapflights users on 4/9. 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.
Wed 10/155:17 pmLAX - BHD
2 stops17h 23mAmerican Airlines
Thu 10/231:15 pmBHD - LAX
1 stop15h 00mAmerican Airlines
Deal found 4/9$633

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 April 10, 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

Thu 5/8

9:25 pm-4:40 pm

1 stop35h 15m

Belfast Intl

Sun 5/18

2:55 pm-7:05 pm

1 stop36h 10m

$532

Los AngelesBelfast

LAX - BHD

LAXBHD

Los Angeles

Fri 5/9

4:30 pm-8:25 pm

1 stop19h 55m

Belfast City

Fri 5/16

7:00 am-2:10 pm

1 stop15h 10m

$587

Los AngelesBelfast

LAX - BHD

LAXBHD

Los Angeles

Thu 5/8

3:35 pm-6:45 pm

2 stops19h 10m

Belfast City

Thu 5/15

6:35 am-5:35 pm

1 stop19h 00m

$670

Los AngelesBelfast

LAX - BHD

LAXBHD

Los Angeles

Wed 7/2

3:02 pm-3:35 pm

2 stops16h 33m

Belfast City

Wed 7/9

6:50 am-2:55 pm

1 stop16h 05m

$984

Los AngelesBelfast

LAX - BFS

LAXBFS

Los Angeles

Fri 9/12

10:00 pm-12:10 pm

2 stops54h 10m

$303

Los AngelesBelfast

LAX - BHD

LAXBHD

Los Angeles

Fri 9/12

10:00 pm-8:10 am

2 stops50h 10m

$363

Los AngelesBelfast

LAX - BHD

LAXBHD

Los Angeles

Thu 9/11

12:58 am-8:10 pm

2 stops35h 12m

$703

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/9

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 April 10, 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 April 10, 2025.
Delta
8.0
Very good
7,906 reviews

Crew

8.5

Boarding

8.2

Overall

8.0

Comfort

8.0

Entertainment

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very good
7,906 reviews
Delta
8.0
Very good
7,906 reviews

Crew

8.5

Boarding

8.2

Overall

8.0

Comfort

8.0

Entertainment

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
KLM
7.8
Good
1,321 reviews
Delta
8.0
Very good
7,906 reviews

Crew

8.5

Boarding

8.2

Overall

8.0

Comfort

8.0

Entertainment

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Virgin Atlantic
7.4
Good
641 reviews
Delta
8.0
Very good
7,906 reviews

Crew

8.5

Boarding

8.2

Overall

8.0

Comfort

8.0

Entertainment

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,906 reviews

Crew

8.5

Boarding

8.2

Overall

8.0

Comfort

8.0

Entertainment

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Iberia
7.0
Good
2,669 reviews
Delta
8.0
Very good
7,906 reviews

Crew

8.5

Boarding

8.2

Overall

8.0

Comfort

8.0

Entertainment

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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.

  • What are the cheapest airlines to fly from Irvine to Belfast one-way?

    The cheapest airline one-way is Iberia, with whom users have recently found tickets for as low as $420. However, be on the lookout for offers from Delta and KLM, as they are both options that can get you from Irvine to Belfast for a low price.

  • 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

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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 April 10, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$606Average$952FlexibilityNo cancel feeOn-time70%
American AirlinesCheapest$610Average$883FlexibilityNo cancel feeOn-time71%

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