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$329+ 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 11/15. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — BHD
nov. 29 — déc. 61
sam. 11/29
sam. 12/6
1 adult, Economy
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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 octobre 30, 2025.

This Mytrip deal was found by Cheapflights users on 10/28. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ven. 12/128:15 pmLAX - BFS
2 stops17h 45mMultiple Airlines
ven. 12/199:00 pmBFS - LAX
2 stops29h 30mMultiple Airlines
Deal found 10/28$860
This Ovago deal was found by Cheapflights users on 10/30. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sam. 11/297:30 pmLAX - BHD
1 stop28h 55mBritish Airways
sam. 12/611:35 amBHD - LAX
1 stop16h 50mBritish Airways
Deal found 10/30$867
This Mytrip deal was found by Cheapflights users on 10/30. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sam. 11/295:30 pmLAX - BHD
2 stops18h 25mMultiple Airlines
sam. 12/62:25 pmBHD - LAX
2 stops32h 50mMultiple Airlines
Deal found 10/30$871
This Cheapflightsfares deal was found by Cheapflights users on 10/29. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 11/38:15 pmLAX - BHD
2 stops29h 00mAer Lingus
sam. 11/156:55 amBHD - LAX
2 stops19h 35mAer Lingus
Deal found 10/29$928
This FlightHub deal was found by Cheapflights users on 10/28. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 11/39:55 pmLAX - BHD
2 stops26h 30mBritish Airways
sam. 11/156:35 amBHD - LAX
1 stop19h 55mBritish Airways
Deal found 10/28$955
This Delta deal was found by Cheapflights users on 10/30. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 11/39:20 amLAX - BHD
2 stops23h 30mDelta
sam. 11/155:20 pmBHD - LAX
1 stop26h 25mDelta
Deal found 10/30$963
This eDestinos deal was found by Cheapflights users on 10/30. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/237:10 pmLAX - BFS
2 stops18h 40mMultiple Airlines
ven. 1/28:05 amBFS - LAX
2 stops44h 10mMultiple Airlines
Deal found 10/30$1,570

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 octobre 30, 2025.

Round-trip from

$645
(Air France)

One-way from

$329
(Kiwi.com)

Popular in

June

Cheapest in

October

Average price

$633
From Irvine to Belfast
Search Deals
One-way flight from Irvine to Belfast
Search Deals
Highest demand for flights based on searches. 19% potential increase in price ($212 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($41 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
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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 octobre 30, 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 - BHD

LAXBHD

Los Angeles

ven. 1/23

1:45 pm-4:50 pm

1 stop19h 05m

Belfast City

mar. 2/3

5:20 pm-11:45 am

1 stop26h 25m

$645

Los AngelesBelfast

LAX - BHD

LAXBHD

Los Angeles

ven. 1/23

9:30 am-4:50 pm

2 stops23h 20m

Belfast City

mar. 2/3

5:20 pm-11:45 am

1 stop26h 25m

$649

Los AngelesBelfast

LAX - BFS

LAXBFS

Los Angeles

ven. 12/12

8:15 pm-10:00 pm

2 stops17h 45m

Belfast Intl

ven. 12/19

9:00 pm-6:30 pm

2 stops29h 30m

$860

Los AngelesBelfast

LAX - BHD

LAXBHD

Los Angeles

sam. 11/29

5:30 pm-7:55 pm

2 stops18h 25m

Belfast City

sam. 12/6

2:25 pm-3:15 pm

2 stops32h 50m

$871

Los AngelesBelfast

LAX - BHD

LAXBHD

Los Angeles

mar. 2/17

9:00 pm-8:15 pm

1 stop15h 15m

Belfast City

jeu. 2/19

6:35 am-5:05 pm

2 stops18h 30m

$910

Los AngelesBelfast

LAX - BHD

LAXBHD

Los Angeles

mar. 2/17

7:10 pm-8:50 pm

2 stops17h 40m

Belfast City

jeu. 2/19

7:25 am-11:15 pm

3 stops47h 50m

$924

Los AngelesBelfast

LAX - BHD

LAXBHD

Los Angeles

sam. 2/21

6:00 pm-7:40 pm

1 stop17h 40m

Belfast City

mer. 2/25

6:35 am-6:30 pm

1 stop19h 55m

$994

Los AngelesBelfast

LAX - BHD

LAXBHD

Los Angeles

dim. 3/1

3:30 pm-4:50 pm

1 stop17h 20m

Belfast City

jeu. 3/5

10:40 am-6:30 pm

1 stop15h 50m

$1,018

Los AngelesBelfast

LAX - BFS

LAXBFS

Los Angeles

mar. 12/23

7:10 pm-9:50 pm

2 stops18h 40m

Belfast Intl

ven. 1/2

8:05 am-8:15 pm

2 stops44h 10m

$1,570

Los AngelesBelfast

LAX - BFS

LAXBFS

Los Angeles

sam. 11/15

7:00 pm-10:05 am

3 stops31h 05m

$329

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/28

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, March is the cheapest month in which you can book a flight from Irvine to Belfast (average of $586). Flying from Irvine to Belfast in June is currently the most expensive (average of $927). 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 octobre 30, 2025.

It’s typically best to fly out from Irvine to Belfast in the morning. Doing so could potentially save you 18% on the flight price compared to flying in the evening, which is usually more expensive.

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 octobre 30, 2025.
Read through reviews of airlines operating flights from Irvine to Belfast, such as British Airways. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
British Airways
6.7
Okay
7,487 reviews

Overall

6.7

Entertainment

6.4

Boarding

6.9

Food

6.3

Crew

7.6

Comfort

6.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2025

IAD - LHR

The plane had to load and unload passengers not through a jet way but out on the tarmac at Heathrow. The steps were steep. We weren't expecting to have to carry our luggage up and down stairs.
British Airways
6.7
Okay
7,487 reviews
British Airways
6.7
Okay
7,487 reviews

Overall

6.7

Entertainment

6.4

Boarding

6.9

Food

6.3

Crew

7.6

Comfort

6.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2025

IAD - LHR

The plane had to load and unload passengers not through a jet way but out on the tarmac at Heathrow. The steps were steep. We weren't expecting to have to carry our luggage up and down stairs.

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.

  • How long is the flight from Irvine to Belfast?

    Departing from Irvine to Belfast will take you 15h 15m. Irvine and Belfast are separated by a distance of 5128 mi. This flight may include one or multiple stops.

  • 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, March is the cheapest month in which you can book a flight from Irvine to Belfast (average of $586). Flying from Irvine to Belfast in June is currently the most expensive (average of $927). 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 airline flying from Irvine to Belfast

Discover the top airline 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 octobre 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$599Average$852FlexibilityNo cancel feeOn-time70%

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