Cheap flights from Dublin to Belfast from £45

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 26/9. 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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21:50 - 10:55DUB-BFS
13h 05m1 stop
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07:15 - 16:25BFS-DUB
9h 10m1 stop
Fri, 5 Sep - Sun, 7 Sep
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22:15 - 07:55DUB-BFS
9h 40m1 stop
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22:55 - 08:55BFS-DUB
10h 00m1 stop
Fri, 5 Sep - Sun, 7 Sep
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06:30 - 16:40DUB-BFS
10h 10m1 stop
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17:05 - 00:10BFS-DUB
7h 05m1 stop
Fri, 26 Sep - Fri, 3 Oct
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14:15 - 22:40DUB-BFS
8h 25m1 stop
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07:00 - 12:35BFS-DUB
5h 35m1 stop
Tue, 23 Sep - Tue, 30 Sep
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13:55 - 18:15DUB-BFS
4h 20m1 stop
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06:20 - 19:05BFS-DUB
12h 45m1 stop
Sat, 27 Sep - Mon, 6 Oct
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06:30 - 21:00DUB-BFS
14h 30m1 stop
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07:05 - 17:20BFS-DUB
10h 15m1 stop
Sat, 6 Sep - Wed, 10 Sep
Aer Lingus Logo
06:40 - 21:10DUB-BHD
14h 30m1 stop
Aer Lingus Logo
06:55 - 22:30BHD-DUB
15h 35m1 stop
£175Aer Lingus
Find Deal
Sun, 14 Sep - Tue, 16 Sep
KLM Logo
11:10 - 21:15DUB-BHD
10h 05m1 stop
KLM Logo
17:25 - 22:25BHD-DUB
5h 00m1 stop
£184KLM
Find Deal
Sat, 27 Sep - Mon, 6 Oct
British Airways Logo
20:10 - 10:10DUB-BHD
14h 00m1 stop
British Airways Logo
19:30 - 07:45BHD-DUB
12h 15m1 stop
£195British Airways
Find Deal
Sat, 27 Sep - Mon, 6 Oct
Aer Lingus Logo
06:30 - 12:55DUB-BHD
6h 25m1 stop
Aer Lingus Logo
10:20 - 18:40BHD-DUB
8h 20m1 stop
£205Aer Lingus
Find Deal
Sat, 27 Sep - Mon, 6 Oct

Aer Lingus flights from Dublin to Belfast

Our best Aer Lingus deals on Dublin to Belfast flight tickets
Aer Lingus
14 Sept
DUB06:40Dublin
14h 30m
1 stop
BHD21:10Belfast City
16 Sept
BHD06:55Belfast City
15h 35m
1 stop
DUB22:30Dublin
Aer Lingus
27 Sept
DUB06:30Dublin
6h 25m
1 stop
BHD12:55Belfast City
6 Oct
BHD10:20Belfast City
8h 20m
1 stop
DUB18:40Dublin

momondo Fare Finder

 
Customise your flight search to find flights from Dublin 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, momondo users made 279,928 searches. Data last updated 13 August 2025.
Use the filters below to find and compare flights from Dublin to Belfast that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

DublinBelfast

DUB - BFS

DUBBFS

Dublin

Fri 5/9

21:50-10:55

1 stop13h 05m

Belfast Intl

Sun 7/9

07:15-16:25

1 stop9h 10m

£102

DublinBelfast

DUB - BFS

DUBBFS

Dublin

Fri 5/9

22:15-07:55

1 stop9h 40m

Belfast Intl

Sun 7/9

22:55-08:55

1 stop10h 00m

£102

DublinBelfast

DUB - BFS

DUBBFS

Dublin

Fri 26/9

06:30-16:40

1 stop10h 10m

Belfast Intl

Fri 3/10

17:05-00:10

1 stop7h 05m

£104

DublinBelfast

DUB - BFS

DUBBFS

Dublin

Tue 23/9

14:15-22:40

1 stop8h 25m

Belfast Intl

Tue 30/9

07:00-12:35

1 stop5h 35m

£105

DublinBelfast

DUB - BFS

DUBBFS

Dublin

Sat 27/9

13:55-18:15

1 stop4h 20m

Belfast Intl

Mon 6/10

06:20-19:05

1 stop12h 45m

£114

DublinBelfast

DUB - BFS

DUBBFS

Dublin

Sat 6/9

06:30-21:00

1 stop14h 30m

Belfast Intl

Wed 10/9

07:05-17:20

1 stop10h 15m

£115

DublinBelfast

DUB - BHD

DUBBHD

Dublin

Sun 14/9

06:40-21:10

1 stop14h 30m

Belfast City

Tue 16/9

06:55-22:30

1 stop15h 35m

£175

DublinBelfast

DUB - BHD

DUBBHD

Dublin

Sat 27/9

11:10-21:15

1 stop10h 05m

Belfast City

Mon 6/10

17:25-22:25

1 stop5h 00m

£184

DublinBelfast

DUB - BHD

DUBBHD

Dublin

Sat 27/9

20:10-10:10

1 stop14h 00m

Belfast City

Mon 6/10

19:30-07:45

1 stop12h 15m

£195

DublinBelfast

DUB - BHD

DUBBHD

Dublin

Sat 27/9

06:30-12:55

1 stop6h 25m

Belfast City

Mon 6/10

10:20-18:40

1 stop8h 20m

£205

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

Cheap Dublin to Belfast flight deals and tips

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

Best price found

£45

Fastest flight time

2h 45m

Direct flights

None

Airports in Belfast

2 airports
The best one-way flight to Belfast from Dublin in the past 72 hours is £45. The best return flight deal from Dublin to Belfast found on momondo in the last 72 hours is £102.
The fastest flight from Dublin to Belfast takes 2h 45m
There are no direct flights from Dublin to Belfast. Popular non-direct routes for this connection are Dublin Airport - Belfast Intl Airport and Dublin Airport - Belfast City Airport.
There are 2 airports near Belfast: Belfast Intl (BFS), Belfast City (BHD)
  • How far is Dublin to Belfast by plane?

    A flight from Dublin to Belfast will travel around 87.5 mi. Typically, this will take 2h 45m by plane in normal conditions.

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

    Prices for flights from Dublin Airport to Belfast refresh daily.

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

    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.

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

    The necessary travel and health documents for your Belfast trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

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

    Confirm your travel details to search for the latest offers for flights from Dublin to Belfast. 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 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 compare prices from 700+ competitors to help you find the price that works best for you. momondo operates in over 30 international markets, bringing you access to a wide range of fares and deals. Search for your travel using momondo for a diverse range of options from airlines and OTAs.

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?

Flights from Dublin to Belfast with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

momondo helps you find the best flight between Dublin and Belfast by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

Price alerts on flights to Belfast from Dublin are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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1 adult
Mon 18/8
Mon 25/8

Find better results for your trip to the United Kingdom

Fly into one of these airports located in Belfast

Airports listed have a maximum distance of 12.2 mi from Belfast