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Belfast Intl

$313+ Cheap flights from Irvine, CA to Belfast Intl (BFS)

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 5/7. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — BFS
Mar 9 — Mar 161
Mon 3/9
Mon 3/16
1 adult, Economy
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Cheap flight deals from Irvine to Belfast Intl

Cheapest flights from Irvine to Belfast Intl
Explore the most affordable flight options available from Irvine to Belfast Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 7, 2026.

This Connections by easyJet deal was found by Cheapflights users on 2/4. 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.
Sat 9/124:30 pm
LAX
-
BFS
1 stop16h 15m
Multiple Airlines
Sat 9/196:20 am
BFS
-
LAX
1 stop14h 55m
Multiple Airlines
Deal found 2/4$870
This Mytrip deal was found by Cheapflights users on 2/2. 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.
Thu 3/122:05 pm
LAX
-
BFS
2 stops25h 15m
Multiple Airlines
Thu 3/1910:15 am
BFS
-
LAX
2 stops32h 55m
Multiple Airlines
Deal found 2/2$990
This Mytrip deal was found by Cheapflights users on 2/5. 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.
Tue 4/148:30 am
LAX
-
BFS
3 stops30h 50m
Multiple Airlines
Sun 4/198:20 pm
BFS
-
LAX
2 stops28h 10m
Multiple Airlines
Deal found 2/5$996
This Booking.com deal was found by Cheapflights users on 2/4. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/219:15 pm
LAX
-
BFS
2 stops18h 25m
Multiple Airlines
Sat 3/287:50 pm
BFS
-
LAX
2 stops29h 25m
Multiple Airlines
Deal found 2/4$1,277

Find flight deals from Irvine to Belfast Intl

Keep the following information in mind while searching for Irvine to Belfast Intl flight deals. Data was last updated February 7, 2026.

Round-trip from

$990
(Mytrip)

One-way from

$313
(Trip.com)

Popular in

June

Cheapest in

October

Average price

$685
From Irvine to Belfast Intl
Search Deals
One-way flight from Irvine to Belfast Intl
Search Deals
Highest demand for flights based on searches. 16% potential increase in price ($184 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($39 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Irvine to Belfast Intl 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 February 7, 2026.
Use the filters below to find and compare flights from Irvine to Belfast Intl Airport that are best for you.

Fly from

Irvine

Fly to

Belfast Intl

Route

Depart

Return

Price

Los AngelesBelfast

LAX - BFS

LAXBFS

Los Angeles

Thu 3/12

2:05 pm-10:20 pm

2 stops25h 15m

Belfast Intl

Thu 3/19

10:15 am-12:10 pm

2 stops32h 55m

$990

Los AngelesBelfast

LAX - BFS

LAXBFS

Los Angeles

Tue 4/14

8:30 am-11:20 pm

3 stops30h 50m

Belfast Intl

Sun 4/19

8:20 pm-4:30 pm

2 stops28h 10m

$996

Los AngelesBelfast

LAX - BFS

LAXBFS

Los Angeles

Sat 3/21

9:15 pm-10:40 pm

2 stops18h 25m

Belfast Intl

Sat 3/28

7:50 pm-6:15 pm

2 stops29h 25m

$1,277

Los AngelesBelfast

LAX - BFS

LAXBFS

Los Angeles

Thu 5/7

6:45 am-8:40 pm

2 stops29h 55m

$313

Los AngelesBelfast

LAX - BFS

LAXBFS

Los Angeles

Tue 2/17

4:45 pm-1:35 pm

3 stops36h 50m

$327

Los AngelesBelfast

LAX - BFS

LAXBFS

Los Angeles

Thu 4/23

9:20 am-11:05 pm

3 stops29h 45m

$339

Los AngelesBelfast

LAX - BFS

LAXBFS

Los Angeles

Sun 2/15

7:10 pm-9:05 am

3 stops29h 55m

$360

Los AngelesBelfast

LAX - BFS

LAXBFS

Los Angeles

Wed 2/18

7:10 pm-8:05 am

3 stops52h 55m

$366

Los AngelesBelfast

LAX - BFS

LAXBFS

Los Angeles

Wed 2/11

7:10 pm-7:25 am

3 stops52h 15m

$431

Los AngelesBelfast

LAX - BFS

LAXBFS

Los Angeles

Fri 2/13

7:10 pm-7:25 am

3 stops52h 15m

$465

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/3

Best time to book a flight from Irvine to Belfast Intl

Have a flexible travel schedule? Discover the best time to fly to Belfast Intl 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 Intl Airport

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

Currently, October is the cheapest month in which you can book a flight from Irvine to Belfast Intl Airport (average of $602). Flying from Irvine to Belfast Intl Airport 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.

Reviews of airlines servicing Belfast Intl

Get insights into the airlines that provide service to Belfast Intl. 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 Intl. Reviews last updated February 7, 2026.
Peruse reviews from past customers who have flown with British Airways from Irvine to Belfast Intl Airport to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
British Airways
6.7
Okay
7,719 reviews

Boarding

6.9

Comfort

6.8

Crew

7.6

Food

6.4

Entertainment

6.4

Overall

6.7

Reviews

1 / 20
8.0
Excellent

Lakshmi,Dec 2025

SFO - LHR

I had a great time on the flight with good entertainment and food. The staff was awesome. The only thing was there was a delay in boarding and takeoff from London. However, I was pleasantly surprised when the airline sent an apology for the few later landing in Mumbai. They did not have WiFi on board on the leg from London to Mumbai but that was okay for me. On the first leg from SF to London, a couple of seats ahead of me had issues with their display so they could not watch anything on their screens although the stewardess gas be them an option to use the WiFi on their devices. This did not affect me, however, so that was cool. I would recommend British Airways. This was my first time flying with them and I had a lovely flight.
British Airways
6.7
Okay
7,719 reviews
British Airways
6.7
Okay
7,719 reviews

Boarding

6.9

Comfort

6.8

Crew

7.6

Food

6.4

Entertainment

6.4

Overall

6.7

Reviews

1 / 20
8.0
Excellent

Lakshmi,Dec 2025

SFO - LHR

I had a great time on the flight with good entertainment and food. The staff was awesome. The only thing was there was a delay in boarding and takeoff from London. However, I was pleasantly surprised when the airline sent an apology for the few later landing in Mumbai. They did not have WiFi on board on the leg from London to Mumbai but that was okay for me. On the first leg from SF to London, a couple of seats ahead of me had issues with their display so they could not watch anything on their screens although the stewardess gas be them an option to use the WiFi on their devices. This did not affect me, however, so that was cool. I would recommend British Airways. This was my first time flying with them and I had a lovely flight.

Related info for your journey

Find useful and relevant information for your journey from Irvine to Belfast Intl. 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 Intl that include hotel bookings?

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

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

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

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

    Yes. Cheapflights offers flight deals from Irvine to Belfast Intl 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 Intl Airport?

    Currently, October is the cheapest month in which you can book a flight from Irvine to Belfast Intl Airport (average of $602). Flying from Irvine to Belfast Intl Airport 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

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Top airline flying from Irvine to Belfast Intl

Discover the top airline that operate flights from Irvine to Belfast Intl. 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 February 7, 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$645Average$903FlexibilityNo cancel feeOn-time70%

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