$135 Cheap Flights from Belfast (BFS) to Dublin (DUB)

View $135 flight on Tue, Sep 30, 2025Opens in a new window

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Cheap Flights from Belfast to Dublin (BFS-DUB)

Prices were available within the past 7 days and start at $135 for one-way flights and $205 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

British Airways
Fri, Sep 26 - Tue, Sep 30
BHD
Belfast
DUB
Dublin
$205 Roundtrip, found 5 days ago
$205
Roundtrip
found 5 days ago
Select British Airways flight, departing Fri, Sep 26 from Belfast to Dublin, returning Tue, Sep 30, priced at $205 found 5 days ago
British Airways
Fri, Sep 26 - Tue, Sep 30
BHD
Belfast
DUB
Dublin
$214 Roundtrip, found 5 days ago
$214
Roundtrip
found 5 days ago
Select British Airways flight, departing Fri, Sep 26 from Belfast to Dublin, returning Tue, Sep 30, priced at $214 found 5 days ago
British Airways
Fri, Jun 6 - Mon, Jun 9
BHD
Belfast
DUB
Dublin
$215 Roundtrip, found 5 hours ago
$215
Roundtrip
found 5 hours ago
Select British Airways flight, departing Fri, Jun 6 from Belfast to Dublin, returning Mon, Jun 9, priced at $215 found 5 hours ago
British Airways
Fri, Sep 26 - Tue, Sep 30
BHD
Belfast
DUB
Dublin
$225 Roundtrip, found 5 days ago
$225
Roundtrip
found 5 days ago
Select British Airways flight, departing Fri, Sep 26 from Belfast to Dublin, returning Tue, Sep 30, priced at $225 found 5 days ago
British Airways
Mon, Nov 10 - Fri, Nov 14
BHD
Belfast
DUB
Dublin
$228 Roundtrip, found 6 days ago
$228
Roundtrip
found 6 days ago
Select British Airways flight, departing Mon, Nov 10 from Belfast to Dublin, returning Fri, Nov 14, priced at $228 found 6 days ago
British Airways
Mon, Jun 9 - Mon, Jun 16
BHD
Belfast
DUB
Dublin
$231 Roundtrip, found 4 days ago
$231
Roundtrip
found 4 days ago
Select British Airways flight, departing Mon, Jun 9 from Belfast to Dublin, returning Mon, Jun 16, priced at $231 found 4 days ago
British Airways
Mon, Nov 10 - Fri, Nov 14
BHD
Belfast
DUB
Dublin
$232 Roundtrip, found 6 days ago
$232
Roundtrip
found 6 days ago
Select British Airways flight, departing Mon, Nov 10 from Belfast to Dublin, returning Fri, Nov 14, priced at $232 found 6 days ago
British Airways
Mon, Nov 10 - Fri, Nov 14
BHD
Belfast
DUB
Dublin
$236 Roundtrip, found 6 days ago
$236
Roundtrip
found 6 days ago
Select British Airways flight, departing Mon, Nov 10 from Belfast to Dublin, returning Fri, Nov 14, priced at $236 found 6 days ago
British Airways
Mon, Nov 10 - Fri, Nov 14
BHD
Belfast
DUB
Dublin
$240 Roundtrip, found 6 days ago
$240
Roundtrip
found 6 days ago
Select British Airways flight, departing Mon, Nov 10 from Belfast to Dublin, returning Fri, Nov 14, priced at $240 found 6 days ago
British Airways
Fri, Sep 26 - Tue, Sep 30
BHD
Belfast
DUB
Dublin
$241 Roundtrip, found 5 days ago
$241
Roundtrip
found 5 days ago
Select British Airways flight, departing Fri, Sep 26 from Belfast to Dublin, returning Tue, Sep 30, priced at $241 found 5 days ago
Flights from Belfast (BHD) to Dublin (DUB)
Origin airport
George Best Belfast City
Destination airport
Dublin
Roundtrip price
$204
Distance
83 mi

Belfast to Dublin Flights

The cheapest times to fly from Belfast to Dublin

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Belfast to Dublin are during the month of September. You can find some of the cheapest flights from Belfast to Dublin with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Belfast to Dublin

Sunday is one of the best days to book for cheap flights from Belfast to Dublin: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Belfast to Dublin

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Belfast to Dublin in 2025. You can also book with separate airlines for your outbound and return journeys, from $135 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Belfast to Dublin flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Belfast to Dublin airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Belfast Intl. Airport (BFS) to Dublin Airport (DUB) cost?
Discover the latest flight deals from BFS to DUB by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from BFS to DUB?
The cheapest flights from BFS to DUB are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from BFS to DUB?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that’ll take you from BFS to DUB. Sort your results by “Price (lowest to highest)” to snap up a great deal.
How many flights per day from Belfast Intl. Airport (BFS) to Dublin Airport (DUB)?
There are no daily nonstop flights from Belfast Intl. Airport (BFS) to Dublin Airport (DUB). But you can book flights with layovers. Filter your search results on Expedia to include one or two stops, and you’ll be soaring above the clouds in no time.
What day of the week has the most flights from BFS to DUB?
Friday is typically the busiest day for flights, while Tuesday tends to be the quietest.* Keep in mind that flight schedules can change based on various factors, including the airline and season.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Belfast Intl. Airport (BFS) to Dublin Airport (DUB)?
To avoid possible delays on the Belfast Intl. Airport (BFS) to Dublin Airport (DUB) route, aim to fly before 3 PM. Flights after this time have a 22% higher chance of being canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.
Is it cheaper to buy a plane ticket from Belfast Intl. Airport (BFS) to Dublin Airport (DUB) last-minute?
Last-minute fares from BFS to DUB are typically more expensive. To secure the lowest prices, start looking for flights early. That being said, if you’re flexible with your travel dates, it’s possible to score a cheap ticket right before you leave.
Is it cheaper to book a BFS to DUB flight and hotel package?
Booking a BFS to DUB flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your trip in one place. Choose from our impressive range of accommodations and then add activities, car rentals and flights to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Belfast Intl. Airport (BFS) to Dublin Airport (DUB)?
In most cases, you can reschedule or cancel your BFS to DUB flight. However, additional charges may apply, especially if your booking was made more than 24 hours ago. Check your itinerary for the airline’s fees and policies on flight changes, or if you want more information, visit our Customer Service portal.

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*Available to One Key members.