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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 14/5. 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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Find the cheapest flights from Dublin to Belfast

Cheap return flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
13:30 - 19:30
DUB
-
BFS
6h 00m
1 stop
Multiple Airlines Logo
17:05 - 23:59
BFS
-
DUB
6h 54m
1 stop
€79Multiple Airlines
Fri, 15 May - Fri, 22 May
Multiple Airlines Logo
22:00 - 11:35
DUB
-
BFS
13h 35m
1 stop
Multiple Airlines Logo
08:50 - 23:20
BFS
-
DUB
14h 30m
1 stop
€80Multiple Airlines
Tue, 28 Apr - Tue, 5 May
Multiple Airlines Logo
13:00 - 22:20
DUB
-
BFS
9h 20m
1 stop
Multiple Airlines Logo
12:45 - 20:30
BFS
-
DUB
7h 45m
1 stop
€81Multiple Airlines
Thu, 14 May - Thu, 21 May
Multiple Airlines Logo
06:30 - 15:15
DUB
-
BFS
8h 45m
1 stop
Multiple Airlines Logo
15:40 - 20:45
BFS
-
DUB
5h 05m
1 stop
€82Multiple Airlines
Wed, 29 Apr - Wed, 6 May
Multiple Airlines Logo
22:05 - 12:15
DUB
-
BFS
14h 10m
1 stop
Multiple Airlines Logo
20:15 - 07:50
BFS
-
DUB
11h 35m
1 stop
€84Multiple Airlines
Mon, 18 May - Tue, 26 May
Multiple Airlines Logo
20:35 - 10:00
DUB
-
BFS
13h 25m
1 stop
Multiple Airlines Logo
07:30 - 20:45
BFS
-
DUB
13h 15m
1 stop
€85Multiple Airlines
Mon, 11 May - Wed, 20 May
Multiple Airlines Logo
18:00 - 23:20
DUB
-
BFS
5h 20m
1 stop
Multiple Airlines Logo
08:55 - 17:20
BFS
-
DUB
8h 25m
1 stop
€86Multiple Airlines
Sat, 9 May - Fri, 15 May
Multiple Airlines Logo
22:05 - 12:15
DUB
-
BFS
14h 10m
1 stop
Multiple Airlines Logo
20:15 - 07:50
BFS
-
DUB
11h 35m
1 stop
€87Multiple Airlines
Mon, 18 May - Tue, 26 May
Multiple Airlines Logo
10:20 - 15:20
DUB
-
BFS
5h 00m
1 stop
Multiple Airlines Logo
12:45 - 20:30
BFS
-
DUB
7h 45m
1 stop
€88Multiple Airlines
Thu, 7 May - Thu, 14 May
Multiple Airlines Logo
20:30 - 07:55
DUB
-
BFS
11h 25m
1 stop
Multiple Airlines Logo
16:55 - 23:05
BFS
-
DUB
6h 10m
1 stop
€90Multiple Airlines
Sat, 25 Apr - Sat, 2 May

Aer Lingus flights from Dublin to Belfast

Our best Aer Lingus deals on Dublin to Belfast flight tickets
Aer Lingus
1 May
DUB07:50Dublin
13h 00m
1 stop
BHD20:50Belfast City
8 May
BHD07:00Belfast City
14h 45m
1 stop
DUB21:45Dublin
€171
Aer Lingus
25 Apr
DUB14:40Dublin
6h 10m
1 stop
BHD20:50Belfast City
2 May
BHD18:55Belfast City
3h 45m
1 stop
DUB22:40Dublin
€179
Aer Lingus
25 Apr
DUB07:50Dublin
7h 10m
1 stop
BHD15:00Belfast City
1 May
BHD07:00Belfast City
9h 45m
1 stop
DUB16:45Dublin
€196

KLM flights from Dublin to Belfast

Our best KLM deals on Dublin to Belfast flight tickets
KLM
7 May
DUB13:25Dublin
19h 55m
1 stop
BHD09:20Belfast City
14 May
BHD17:30Belfast City
14h 50m
1 stop
DUB08:20Dublin
€267
KLM
27 Apr
DUB08:55Dublin
8h 00m
1 stop
BHD16:55Belfast City
3 May
BHD09:50Belfast City
12h 35m
1 stop
DUB22:25Dublin
€281
KLM
14 May
DUB11:10Dublin
22h 10m
1 stop
BHD09:20Belfast City
20 May
BHD17:30Belfast City
4h 55m
1 stop
DUB22:25Dublin
€330

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 13,528 searches. Data last updated 4 April 2026.
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

Cheapest return flight

DublinBelfast

DUB - BFS

DUBBFS

Dublin

Fri 15/5

13:30-19:30

1 stop6h 00m

Belfast Intl

Fri 22/5

17:05-23:59

1 stop6h 54m

€79

DublinBelfast

DUB - BFS

DUBBFS

Dublin

Tue 28/4

22:00-11:35

1 stop13h 35m

Belfast Intl

Tue 5/5

08:50-23:20

1 stop14h 30m

€80

DublinBelfast

DUB - BFS

DUBBFS

Dublin

Thu 14/5

13:00-22:20

1 stop9h 20m

Belfast Intl

Thu 21/5

12:45-20:30

1 stop7h 45m

€81

DublinBelfast

DUB - BFS

DUBBFS

Dublin

Wed 29/4

06:30-15:15

1 stop8h 45m

Belfast Intl

Wed 6/5

15:40-20:45

1 stop5h 05m

€82

DublinBelfast

DUB - BFS

DUBBFS

Dublin

Mon 18/5

22:05-12:15

1 stop14h 10m

Belfast Intl

Tue 26/5

20:15-07:50

1 stop11h 35m

€84

DublinBelfast

DUB - BFS

DUBBFS

Dublin

Mon 11/5

20:35-10:00

1 stop13h 25m

Belfast Intl

Wed 20/5

07:30-20:45

1 stop13h 15m

€85

DublinBelfast

DUB - BFS

DUBBFS

Dublin

Sat 9/5

18:00-23:20

1 stop5h 20m

Belfast Intl

Fri 15/5

08:55-17:20

1 stop8h 25m

€86

DublinBelfast

DUB - BFS

DUBBFS

Dublin

Mon 18/5

22:05-12:15

1 stop14h 10m

Belfast Intl

Tue 26/5

20:15-07:50

1 stop11h 35m

€87
Fastest return journey

DublinBelfast

DUB - BFS

DUBBFS

Dublin

Thu 7/5

10:20-15:20

1 stop5h 00m

Belfast Intl

Thu 14/5

12:45-20:30

1 stop7h 45m

€88

DublinBelfast

DUB - BFS

DUBBFS

Dublin

Sat 25/4

20:30-07:55

1 stop11h 25m

Belfast Intl

Sat 2/5

16:55-23:05

1 stop6h 10m

€90

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
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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 15m

Direct flights

None
The fastest flight from Dublin to Belfast takes 4h 15m
There are no direct flights from Dublin to Belfast. There are no popular flight routes from Dublin to Belfast.
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Frequently asked questions about flying from Dublin to Belfast

  • How far is Dublin to Belfast by plane?

    Belfast is 140.9 km away from Dublin. 4h 15m is a normal flight duration for this route.

  • 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 stopovers. 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 required travel and health documents for your Belfast trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's licence and a passport valid for six months after your intended arrival at Belfast. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Frequently asked questions about flying from Dublin to Belfast

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

    You can take advantage of momondo’s Price Alerts by first searching for your flights to Dublin from Belfast. Flight offers will be shown to you in real-time. From there you can create a Price Alert by using our on-site widget.

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

    With “Price Forecast”, learn how soon you should book your flight in advance. Down to the day of week and time of day, our information can inform you on the ideal time to book to save on your travel. Our “Price Calendar” shows you at a quick glance when to book your travel for lower rates. By setting “Price Alerts” you can monitor changes in price and target the ideal time to book. Search for your trip destination by budget amount via our “Explore” feature. Whether you’re looking for ideas for your next travel adventure or cost-cutting tips, our “Discover” content is a great place to start.

  • How does momondo find its flight prices?

    momondo shows deals across 700+ competitors all at once. momondo is active in 30 international markets, so you can have access to a wide range of options from airlines and OTAs alike.

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?

All flight searches from Dublin to Belfast on momondo can be filtered to show those which offer flexible booking policies.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Dublin to Belfast.

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

Yes. momondo can track prices for Dublin to Belfast flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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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 19.6 km from Belfast
Belfast Intl Airport
Belfast City Airport