Cheap flights from Dublin to Belfast from £46

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Dublin to Belfast departing on 15/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags
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Cheap return flights

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22:05 - 08:05DUB-BFS
10h 00m1 stop
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16:20 - 00:40BFS-DUB
8h 20m1 stop
Mon, 29 Sep - Mon, 6 Oct
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16:40 - 22:20DUB-BFS
5h 40m1 stop
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08:10 - 22:05BFS-DUB
13h 55m1 stop
Mon, 29 Sep - Mon, 6 Oct
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06:00 - 16:15DUB-BFS
10h 15m1 stop
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23:45 - 08:45BFS-DUB
9h 00m1 stop
Fri, 26 Sep - Mon, 29 Sep
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06:15 - 16:40DUB-BFS
10h 25m1 stop
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07:15 - 12:50BFS-DUB
5h 35m1 stop
Fri, 26 Sep - Sun, 28 Sep
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14:05 - 23:10DUB-BFS
9h 05m1 stop
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18:40 - 23:20BFS-DUB
4h 40m1 stop
Fri, 12 Sep - Fri, 19 Sep
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07:10 - 10:30DUB-BFS
3h 20m1 stop
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08:10 - 11:50BFS-DUB
3h 40m1 stop
Mon, 29 Sep - Mon, 6 Oct
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06:50 - 11:55DUB-BFS
5h 05m1 stop
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07:20 - 15:10BFS-DUB
7h 50m1 stop
Tue, 2 Sep - Thu, 4 Sep
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20:20 - 08:40DUB-BFS
12h 20m1 stop
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22:40 - 08:55BFS-DUB
10h 15m1 stop
Sun, 28 Sep - Sun, 5 Oct
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19:20 - 23:00DUB-BFS
3h 40m1 stop
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12:20 - 16:45BFS-DUB
4h 25m1 stop
Wed, 1 Oct - Sat, 11 Oct
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06:30 - 09:45DUB-BFS
3h 15m1 stop
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17:40 - 21:30BFS-DUB
3h 50m1 stop
Thu, 2 Oct - Wed, 8 Oct

momondo Fare Finder

 
Customise your flight search to find flights from Dublin to Belfast Intl Airport 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, momondo users made 279,928 searches. Data last updated 16 August 2025.
Use the filters below to find and compare flights from Dublin to Belfast Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

DublinBelfast

DUB - BFS

DUBBFS

Dublin

Mon 29/9

22:05-08:05

1 stop10h 00m

Belfast Intl

Mon 6/10

16:20-00:40

1 stop8h 20m

£95

DublinBelfast

DUB - BFS

DUBBFS

Dublin

Mon 29/9

16:40-22:20

1 stop5h 40m

Belfast Intl

Mon 6/10

08:10-22:05

1 stop13h 55m

£102

DublinBelfast

DUB - BFS

DUBBFS

Dublin

Fri 26/9

06:00-16:15

1 stop10h 15m

Belfast Intl

Mon 29/9

23:45-08:45

1 stop9h 00m

£103

DublinBelfast

DUB - BFS

DUBBFS

Dublin

Fri 26/9

06:15-16:40

1 stop10h 25m

Belfast Intl

Sun 28/9

07:15-12:50

1 stop5h 35m

£103

DublinBelfast

DUB - BFS

DUBBFS

Dublin

Fri 12/9

14:05-23:10

1 stop9h 05m

Belfast Intl

Fri 19/9

18:40-23:20

1 stop4h 40m

£104

DublinBelfast

DUB - BFS

DUBBFS

Dublin

Mon 29/9

07:10-10:30

1 stop3h 20m

Belfast Intl

Mon 6/10

08:10-11:50

1 stop3h 40m

£105

DublinBelfast

DUB - BFS

DUBBFS

Dublin

Tue 2/9

06:50-11:55

1 stop5h 05m

Belfast Intl

Thu 4/9

07:20-15:10

1 stop7h 50m

£107

DublinBelfast

DUB - BFS

DUBBFS

Dublin

Sun 28/9

20:20-08:40

1 stop12h 20m

Belfast Intl

Sun 5/10

22:40-08:55

1 stop10h 15m

£114

DublinBelfast

DUB - BFS

DUBBFS

Dublin

Wed 1/10

19:20-23:00

1 stop3h 40m

Belfast Intl

Sat 11/10

12:20-16:45

1 stop4h 25m

£117

DublinBelfast

DUB - BFS

DUBBFS

Dublin

Thu 2/10

06:30-09:45

1 stop3h 15m

Belfast Intl

Wed 8/10

17:40-21:30

1 stop3h 50m

£123

Flights are sorted by cheapest return flights first.

Showing 1-10 of 19 resultsSorted by cheapest first
1
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When to book flights from Dublin to Belfast Intl Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Dublin to Belfast Intl Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated return price

Cheap Dublin to Belfast Intl Airport (DUB to BFS) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Dublin to Belfast Intl Airport

Best price found

£46

Fastest flight time

2h 45m

Direct flights

None
The best one-way flight to Belfast Intl Airport from Dublin in the past 72 hours is £46. The best return flight deal from Dublin to Belfast Intl Airport found on momondo in the last 72 hours is £95.
The fastest flight from Dublin to Belfast Intl Airport takes 2h 45m
There are no direct flights from Dublin to Belfast Intl Airport. Popular non-direct route for this connection is Dublin Airport - Belfast Intl Airport.
  • How far is Dublin to Belfast Intl by plane?

    There are 90.7 mi between Dublin and Belfast Intl. In terms of flight time, this usually takes a little over 2h 45m.

  • When did momondo last update prices for flights from Dublin Airport to Belfast Intl Airport?

    Prices for flights from Dublin Airport to Belfast Intl Airport refresh daily.

  • How old do you have to be to fly from Dublin Airport to Belfast Intl Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Dublin Airport to Belfast Intl Airport.

  • What documentation or ID do you need to fly to Belfast Intl Airport?

    The travel and health documents you'll need for your trip to Belfast Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Belfast Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • How do I get Price Alerts for flights from Dublin to Belfast Intl Airport?

    Confirm your travel details to search for the latest offers for flights from Dublin to Belfast Intl Airport. While browsing offers there will be the option to toggle “Price Alerts”. You’ll then receive updates when prices for the flight route increase or decrease.

  • How can I save money on flights from Dublin to Belfast Intl Airport with momondo?

    By using tools like our “Price Calendar”, you can see the best days for return flights on your travels. Our “Price Forecast” tool uses AI to predict whether you should purchase or hold off on booking for potentially cheaper prices. Explore shows you all flight options from a city or airport to build your own unique adventure. The Discover blog also provides valuable insights for saving money while booking your experience. After searching you can toggle on “Price Alerts” to track prices for your desired flight and book at the ideal moment.

  • How does momondo find its flight prices?

    We aggregate our prices from over 700+ competitors from airlines to OTAs. We operate in over 30 markets worldwide to show you a wide range of travel options.

Travelling to a place near Belfast?

Book flights to Belfast if you plan to visit one of these locations
Ballymena
Newry
Armagh
Cookstown
Dungannon
Portadown

Why use momondo?

Why should I use momondo to find a flight deal from Dublin to Belfast?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Dublin to Belfast . Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Dublin to Belfast with flexible booking policies on momondo?

momondo does allow users to show only those flights to Belfast from Dublin which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Dublin to Belfast?

Once you have performed a search for Dublin to Belfast flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Dublin to Belfast right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Dublin to Belfast flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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1 adult
Thu 21/8
Thu 28/8

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