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Belfast Intl

$316+ 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 1/25. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — BFS
Jan 20 — Jan 271
Tue 1/20
Tue 1/27
1 adult, Economy
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Cheap flight deals from Irvine to Belfast Intl

Best flights from Irvine to Belfast Intl
Discover carefully curated flight deals from Irvine to Belfast Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 21, 2025.

This Mytrip deal was found by Cheapflights users on 12/21. 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.
Wed 2/47:10 pmLAX - BFS
2 stops19h 10mMultiple Airlines
Wed 2/112:15 pmBFS - LAX
2 stops34h 20mMultiple Airlines
Deal found 12/21$766

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 December 21, 2025.

Round-trip from

$766
(Mytrip)

One-way from

$316
(Kiwi.com)

Popular in

June

Cheapest in

October

Average price

$1,098
From Irvine to Belfast Intl
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One-way flight from Irvine to Belfast Intl
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Highest demand for flights based on searches. 17% potential increase in price ($187 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($39 potential savings vs. average RT price).
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Average for round-trip flights in December 2025
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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 December 21, 2025.
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

Wed 2/4

7:10 pm-10:20 pm

2 stops19h 10m

Belfast Intl

Wed 2/11

2:15 pm-4:35 pm

2 stops34h 20m

$766

Los AngelesBelfast

LAX - BFS

LAXBFS

Los Angeles

Sun 1/25

12:33 am-10:05 am

3 stops49h 32m

$316

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/19

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.

What is the cheapest time of day to fly from IR9 to BFS?

Find hourly flight availability from Irvine to Belfast Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 21, 2025.

It’s typically best to fly out from Irvine to Belfast Intl Airport at noon. Doing so could potentially save you 13% on the flight price compared to flying in the evening, which is usually more expensive.

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 December 21, 2025.
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
7,602 reviews

Boarding

6.9

Entertainment

6.4

Overall

6.7

Food

6.4

Comfort

6.7

Crew

7.6

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
7,602 reviews
British Airways
6.7
Okay
7,602 reviews

Boarding

6.9

Entertainment

6.4

Overall

6.7

Food

6.4

Comfort

6.7

Crew

7.6

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

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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 December 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$645Average$866FlexibilityNo cancel feeOn-time70%

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