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$580+ Cheap flights from Irvine, CA to Belfast

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.
LAX — BHD
oct. 15 — oct. 221
mié. 10/15
mié. 10/22
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 septiembre 15, 2025.

Round-trip from

$580
(American Airlines)

Popular in

June

Cheapest in

November

Average price

$923
From Irvine to Belfast
Search Deals
Highest demand for flights based on searches. 18% potential increase in price ($216 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($41 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2025
Search Deals

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 septiembre 15, 2025.

This American Airlines deal was found by Cheapflights users on 9/14. 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.
mié. 10/151:25 pmLAX - BHD
1 stop16h 05mAmerican Airlines
jue. 10/236:35 amBHD - LAX
1 stop19h 30mAmerican Airlines
Deal found 9/14$580
This American Airlines deal was found by Cheapflights users on 9/14. 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.
jue. 10/169:30 pmLAX - BHD
1 stop13h 50mAmerican Airlines
jue. 10/236:35 amBHD - LAX
1 stop19h 30mAmerican Airlines
Deal found 9/14$631
This American Airlines deal was found by Cheapflights users on 9/14. 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.
lun. 11/38:35 amLAX - BHD
2 stops18h 05mAmerican Airlines
sáb. 11/156:35 amBHD - LAX
1 stop21h 50mAmerican Airlines
Deal found 9/14$636
This Iberia deal was found by Cheapflights users on 9/15. 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.
jue. 10/3010:00 pmLAX - BHD
1 stop15h 30mMultiple Airlines
jue. 11/611:05 amBHD - LAX
2 stops19h 03mMultiple Airlines
Deal found 9/15$642
This Cheapflightsfares deal was found by Cheapflights users on 9/14. 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. 11/39:00 pmLAX - BHD
1 stop15h 15mBritish Airways
sáb. 11/156:35 amBHD - LAX
1 stop19h 55mBritish Airways
Deal found 9/14$689
This Delta deal was found by Cheapflights users on 9/15. 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.
jue. 10/309:59 amLAX - BHD
2 stops23h 51mDelta
jue. 11/66:30 amBHD - LAX
2 stops23h 19mDelta
Deal found 9/15$696
This FlightHub deal was found by Cheapflights users on 9/14. 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.
jue. 10/164:36 pmLAX - BHD
2 stops18h 44mBritish Airways
jue. 10/2312:40 pmBHD - LAX
2 stops18h 19mBritish Airways
Deal found 9/14$721
This Mytrip deal was found by Cheapflights users on 9/15. 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.
jue. 10/308:10 pmLAX - BFS
2 stops19h 10mMultiple Airlines
jue. 11/62:25 pmBFS - LAX
2 stops34h 10mMultiple Airlines
Deal found 9/15$825
This Mytrip deal was found by Cheapflights users on 9/14. 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.
vie. 11/217:00 amLAX - BFS
3 stops31h 00mMultiple Airlines
dom. 11/3010:45 pmBFS - LAX
2 stops27h 45mMultiple Airlines
Deal found 9/14$842
This Mytrip deal was found by Cheapflights users on 9/14. 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.
vie. 11/217:00 amLAX - BHD
2 stops29h 30mMultiple Airlines
dom. 11/307:20 pmBHD - LAX
2 stops31h 10mMultiple Airlines
Deal found 9/14$925
This Kiwi.com deal was found by Cheapflights users on 9/15. 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.
jue. 12/187:30 pmLAX - BFS
2 stops18h 50mMultiple Airlines
vie. 12/265:30 pmBFS - LAX
1 stop28h 30mMultiple Airlines
Deal found 9/15$1,576

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 septiembre 15, 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

mié. 10/15

11:30 am-11:55 am

2 stops16h 25m

Belfast City

jue. 10/23

12:40 pm-8:15 pm

1 stop15h 35m

$585

Los AngelesBelfast

LAX - BHD

LAXBHD

Los Angeles

jue. 10/16

9:30 pm-7:20 pm

1 stop13h 50m

Belfast City

jue. 10/23

6:35 am-6:05 pm

1 stop19h 30m

$631

Los AngelesBelfast

LAX - BHD

LAXBHD

Los Angeles

lun. 11/3

8:35 am-10:40 am

2 stops18h 05m

Belfast City

sáb. 11/15

9:15 am-8:25 pm

1 stop19h 10m

$636

Los AngelesBelfast

LAX - BHD

LAXBHD

Los Angeles

vie. 1/23

2:30 pm-5:15 pm

2 stops18h 45m

Belfast City

mar. 2/3

5:15 pm-5:53 pm

2 stops32h 38m

$651

Los AngelesBelfast

LAX - BHD

LAXBHD

Los Angeles

lun. 11/3

9:00 pm-8:15 pm

1 stop15h 15m

Belfast City

sáb. 11/15

6:35 am-6:30 pm

1 stop19h 55m

$689

Los AngelesBelfast

LAX - BHD

LAXBHD

Los Angeles

jue. 10/30

9:59 am-4:50 pm

2 stops23h 51m

Belfast City

jue. 11/6

6:30 am-9:49 pm

2 stops23h 19m

$696

Los AngelesBelfast

LAX - BFS

LAXBFS

Los Angeles

jue. 10/30

8:10 pm-10:20 pm

2 stops19h 10m

Belfast Intl

jue. 11/6

2:25 pm-4:35 pm

2 stops34h 10m

$825

Los AngelesBelfast

LAX - BFS

LAXBFS

Los Angeles

vie. 11/21

7:00 am-10:00 pm

3 stops31h 00m

Belfast Intl

dom. 11/30

10:45 pm-6:30 pm

2 stops27h 45m

$842

Los AngelesBelfast

LAX - BHD

LAXBHD

Los Angeles

vie. 11/21

7:00 am-8:30 pm

2 stops29h 30m

Belfast City

dom. 11/30

7:20 pm-6:30 pm

2 stops31h 10m

$925

Los AngelesBelfast

LAX - BFS

LAXBFS

Los Angeles

vie. 1/23

3:00 pm-2:40 pm

2 stops39h 40m

Belfast Intl

mar. 2/3

6:25 am-6:30 pm

2 stops44h 05m

$1,095

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/14

Showing 1-10 of 11 results
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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 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 septiembre 15, 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.

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 septiembre 15, 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
7,361 reviews

Comfort

6.7

Entertainment

6.4

Food

6.3

Overall

6.7

Crew

7.6

Boarding

6.9

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
7,361 reviews
British Airways
6.7
Okay
7,361 reviews

Comfort

6.7

Entertainment

6.4

Food

6.3

Overall

6.7

Crew

7.6

Boarding

6.9

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 16h 25m. Irvine and Belfast are separated by a distance of 5128 mi.

  • 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 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 septiembre 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$599Average$927FlexibilityNo cancel feeOn-time70%

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