Cheap Flights from Belfast to Donegal

Compare Belfast to Donegal flight deals

Find the cheapest month or even day of the year to fly to Donegal

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Flight deals from Belfast to Donegal Airport

Looking for a cheap last-minute deal or the best return flight from Belfast to Donegal Airport? If you want to travel next month, return fares start from ر.ق.‏ 739. Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from Belfast to Donegal

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Belfast to Donegal flights are currently cheapest in April.

Belfast to Donegal: Alternative routes

Compare routes from Belfast to Donegal below. You may find an airport to fly into that's cheaper, faster, or easier than Donegal.

Belfast to Donegal: Flight information

The things to know before you go.
Cheapest flight foundر.ق.‏ 424
Cheapest month to flyApril

Finding cheap flights from Belfast to Donegal: Frequently asked questions

The best price we found for a return flight from Belfast to Donegal is ر.ق.‏ 739. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from Belfast to Donegal. But we found flights with one stop from ر.ق.‏ 738.
As of March 2026, there are no flights flying from Belfast to Donegal.
The cheapest month to fly from Belfast to Donegal is usually April.
After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Belfast to Donegal Airport on Wednesday, 1 April 2026.
No airlines currently offer direct flights between Belfast and Donegal Airport. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Donegal but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Donegal is around 40 days in advance, so don’t leave your flight to the last minute.
The cheapest airline that flies to Donegal is Ryanair .

Travelling from Belfast to Donegal Airport (CFN): What you need to know

  • Donegal Airport is located in Donegal. The city's timezone is UTC+0 — the same as Belfast.

  • For a stress-free journey, arrive at the airport two hours ahead of international flights and an hour before domestic departures. This way, you can comfortably board your flight from Belfast to CFN.

  • Show up at the airport even earlier during popular months like June. Aim for two hours before a domestic departure and four hours ahead of an international flight. Once you've checked in, you can use any extra time to grab something to eat or simply relax.

Airports in Belfast

Belfast International Airport (BFS)

  • Stopovers are a great opportunity to explore a new place or just take a break during your journey. When looking for a cheap flight from Belfast to CFN, deselect 'Direct flights only' to compare all potential stops. Glasgow Airport (GLA) is one option when departing from Belfast International Airport (BFS).

  • BFS is around 19 kilometres from central Belfast. If you're ride-sharing, driving or catching a taxi from the centre, it'll take you 25 minutes or so to get there, depending on the traffic. If you're taking public transport, expect the travel time to be around 45 minutes.

  • Want a stress-free start to your break? Stay near Belfast International Airport. Whether you're catching an early flight from Belfast to Donegal Airport or just don't want to be rushed, these hotels offer the perfect solution:

  • Of all flights leaving Belfast International Airport, 68% touch down on time at their destination.

George Best Belfast City Airport (BHD)

  • Break up your flight from Belfast to Donegal Airport with a stop at Glasgow Airport (GLA). One of the main stopovers between George Best Belfast City Airport and CFN, it's a great opportunity to unwind before the next leg of your journey.

  • On public transport, you can travel from central Belfast to BHD in about 25 minutes. The airport is roughly 5 kilometres away, and getting there by car takes approximately 15 minutes.

  • Flying off with the first light? You might like to check in to one of these hotels near George Best Belfast City Airport the day before your Belfast to CFN flight:

  • When it comes to keeping flights on track, George Best Belfast City Airport has an on-time arrival performance of 69%.

About Donegal Airport (CFN)

  • If you're coming in on a late flight from Belfast to Donegal Airport, few things beat the convenience of staying near the terminal. Grab your bags from the carousel and then be showered and sleeping not long after at one of these options near CFN:

Getting from Donegal Airport (CFN) to central Donegal

  • Donegal Airport is around 48 kilometres from central Donegal. How long it'll take to get there by taxi or car hire will depend on the time of day. Do a little research before you go.

  • Travelling by public transport will take you around 1 hour.

How to find the cheapest flights from Belfast to Donegal Airport (CFN)

  • ر.ق.‏ 423 is the best price for a one-way ticket from Belfast to Donegal Airport. Return flights start at ر.ق.‏ 739. These prices may change depending on demand.

  • Booking early is often the key to scoring a cheap flight from Belfast to CFN. Fares tend to rise as demand increases, so the closer you get to departure, the more it could cost you.

  • Cheap Belfast to Donegal Airport tickets are easier to find when your travel dates are flexible. Use the 'Whole month' tool to compare fares throughout the month and then pick the cheapest day.

  • You don't need to check back in every day to find out if prices have dropped when you set up a Price Alert. We'll let you know when a lower fare pops up on plane tickets from Belfast to CFN.

  • Find the best deal on a flight from Belfast to Donegal Airport with the help of the filters. Choose your preferred arrival and departure times, number of stops and airlines. You can also sort your results by 'Fastest,' 'Cheapest' or 'Best.'

The best time to fly from Belfast to Donegal Airport (CFN)

  • April is the quietest month for flights from Belfast to Donegal Airport (CFN), while November is the most popular. Find the best time to visit Donegal based on whether you like a lively atmosphere or a more laid-back vibe.

  • Book a Belfast to CFN plane ticket departing in July if you're eager to explore the city during its warmest month. You can expect temperatures in Donegal to range from 9ºC to 20ºC.

  • January has temperatures of between 0ºC and 8ºC. Search for cheap tickets from Belfast to Donegal Airport around that time if you want to travel when it's cooler.

More about Donegal

  • When it comes to looking for somewhere to lay your head, you'll find the top stays in Donegal right here. Check out these options once you've booked your flight from Belfast to Donegal Airport:

  • All great journeys should include some sightseeing. Donegal Castle, Donegal Town Diamond and The River Bank Walk, Donegal Town are must-do's during your Donegal adventure.

Explore more of Ireland

  • You've visited Donegal, now it's time to discover other parts of Ireland. Travel around 225 kilometres southeast to Dublin to check off its top attractions. From Guinness Storehouse to Trinity College Library and St. Patrick's Cathedral, your itinerary will be busy.

  • If you want to check out another corner of Ireland, consider Tallaght, about 241 kilometres southeast of Donegal. St Maelruain's Church of Ireland, St. Mark's Parish and Church of the Incarnation, Fettercairn are highlights.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.