Cheap flights from Dublin to Belfast from £42

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 7/1. 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

Enter your travel dates to find the best prices.
Multiple Airlines Logo
10:05 - 16:10DUB-BFS
6h 05m1 stop
Multiple Airlines Logo
07:05 - 16:50BFS-DUB
9h 45m1 stop
£74Multiple Airlines
Find Deal
Thu, 15 Jan - Thu, 22 Jan
Multiple Airlines Logo
19:45 - 07:25DUB-BFS
11h 40m1 stop
Multiple Airlines Logo
07:50 - 14:50BFS-DUB
7h 00m1 stop
£77Multiple Airlines
Find Deal
Thu, 8 Jan - Mon, 12 Jan
Multiple Airlines Logo
10:05 - 16:10DUB-BFS
6h 05m1 stop
Multiple Airlines Logo
07:05 - 16:50BFS-DUB
9h 45m1 stop
£79Multiple Airlines
Find Deal
Thu, 15 Jan - Thu, 22 Jan
Multiple Airlines Logo
06:10 - 09:55DUB-BFS
3h 45m1 stop
Multiple Airlines Logo
06:30 - 15:30BFS-DUB
9h 00m1 stop
£80Multiple Airlines
Find Deal
Tue, 20 Jan - Tue, 27 Jan
Multiple Airlines Logo
14:45 - 20:50DUB-BFS
6h 05m1 stop
Multiple Airlines Logo
13:10 - 17:55BFS-DUB
4h 45m1 stop
£94Multiple Airlines
Find Deal
Sat, 17 Jan - Sat, 24 Jan
Multiple Airlines Logo
16:55 - 06:45DUB-BFS
13h 50m1 stop
Multiple Airlines Logo
23:10 - 09:20BFS-DUB
10h 10m1 stop
£95Multiple Airlines
Find Deal
Sat, 17 Jan - Sat, 24 Jan
Multiple Airlines Logo
21:10 - 23:45DUB-BFS
26h 35m1 stop
Multiple Airlines Logo
06:15 - 19:35BFS-DUB
13h 20m1 stop
£98Multiple Airlines
Find Deal
Thu, 15 Jan - Thu, 22 Jan
Aer Lingus Logo
07:20 - 13:25DUB-BHD
6h 05m1 stop
Aer Lingus Logo
06:55 - 10:50BHD-DUB
3h 55m1 stop
£138Aer Lingus
Find Deal
Sat, 17 Jan - Sat, 24 Jan
Aer Lingus Logo
07:20 - 13:25DUB-BHD
6h 05m1 stop
Aer Lingus Logo
11:05 - 14:50BHD-DUB
3h 45m1 stop
£141Aer Lingus
Find Deal
Sat, 17 Jan - Sat, 24 Jan
KLM Logo
05:55 - 16:50DUB-BHD
10h 55m1 stop
KLM Logo
17:20 - 22:10BHD-DUB
4h 50m1 stop
£175KLM
Find Deal
Sat, 17 Jan - Sat, 24 Jan

KLM flights from Dublin to Belfast

Our best KLM deals on Dublin to Belfast flight tickets
KLM
17 Jan
DUB05:55Dublin
10h 55m
1 stop
BHD16:50Belfast City
24 Jan
BHD17:20Belfast City
4h 50m
1 stop
DUB22:10Dublin
KLM
15 Dec
DUB05:55Dublin
15h 05m
1 stop
BHD21:00Belfast City
18 Dec
BHD17:20Belfast City
4h 50m
1 stop
DUB22:10Dublin

Aer Lingus flights from Dublin to Belfast

Our best Aer Lingus deals on Dublin to Belfast flight tickets
Aer Lingus
17 Jan
DUB07:20Dublin
6h 05m
1 stop
BHD13:25Belfast City
24 Jan
BHD06:55Belfast City
3h 55m
1 stop
DUB10:50Dublin
Aer Lingus
17 Jan
DUB07:20Dublin
6h 05m
1 stop
BHD13:25Belfast City
24 Jan
BHD11:05Belfast City
3h 45m
1 stop
DUB14:50Dublin
Aer Lingus
6 Dec
DUB06:40Dublin
6h 10m
1 stop
BHD12:50Belfast City
12 Dec
BHD07:00Belfast City
13h 45m
1 stop
DUB20:45Dublin

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 2 December 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

Thu 15/1

10:05-16:10

1 stop6h 05m

Belfast Intl

Thu 22/1

07:05-16:50

1 stop9h 45m

£74

DublinBelfast

DUB - BFS

DUBBFS

Dublin

Thu 8/1

19:45-07:25

1 stop11h 40m

Belfast Intl

Mon 12/1

07:50-14:50

1 stop7h 00m

£77

DublinBelfast

DUB - BFS

DUBBFS

Dublin

Thu 15/1

10:05-16:10

1 stop6h 05m

Belfast Intl

Thu 22/1

07:05-16:50

1 stop9h 45m

£79

DublinBelfast

DUB - BFS

DUBBFS

Dublin

Tue 20/1

06:10-09:55

1 stop3h 45m

Belfast Intl

Tue 27/1

06:30-15:30

1 stop9h 00m

£80

DublinBelfast

DUB - BFS

DUBBFS

Dublin

Sat 17/1

14:45-20:50

1 stop6h 05m

Belfast Intl

Sat 24/1

13:10-17:55

1 stop4h 45m

£94

DublinBelfast

DUB - BFS

DUBBFS

Dublin

Sat 17/1

16:55-06:45

1 stop13h 50m

Belfast Intl

Sat 24/1

23:10-09:20

1 stop10h 10m

£95

DublinBelfast

DUB - BFS

DUBBFS

Dublin

Thu 15/1

21:10-23:45

1 stop26h 35m

Belfast Intl

Thu 22/1

06:15-19:35

1 stop13h 20m

£98

DublinBelfast

DUB - BHD

DUBBHD

Dublin

Sat 17/1

07:20-13:25

1 stop6h 05m

Belfast City

Sat 24/1

06:55-10:50

1 stop3h 55m

£138

DublinBelfast

DUB - BHD

DUBBHD

Dublin

Sat 17/1

07:20-13:25

1 stop6h 05m

Belfast City

Sat 24/1

11:05-14:50

1 stop3h 45m

£141

DublinBelfast

DUB - BHD

DUBBHD

Dublin

Sat 17/1

05:55-16:50

1 stop10h 55m

Belfast City

Sat 24/1

17:20-22:10

1 stop4h 50m

£175

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Belfast from

How to get the cheapest flight ticket from Dublin to Belfast

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest airline that flies from Dublin to Belfast?

Aer Lingus and KLM are the most popular carriers operating from Dublin to Belfast

Cheap Dublin to Belfast flight deals and tips

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

Fastest flight time

4h 30m

Direct flights

None
The fastest flight from Dublin to Belfast takes 4h 30m
There are no direct flights from Dublin to Belfast. There are no popular flight routes from Dublin to Belfast.
  • How far is Dublin to Belfast by plane?

    A flight from Dublin to Belfast will travel around 87.5 mi. Typically, this will take 3h 00m 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.

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
Thu 1/1
Thu 8/1

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