66 - 252 GBP
From most locations, the cheapest flights to Donegal can be found during the month of January; however great deals can be found at other times.
In general, most flyers find the cheapest time to book a flight to Donegal is about 42 days prior.
On average, the cheapest flights to Donegal are found when departing on a Tuesday. Try to avoid departing on a Sunday, as this is usually the most expensive day.
In general, when looking for the cheapest flight to Donegal, our data indicates that morning flights are the most cost-effective. evening flights tend to be the most expensive.