Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Qatar to Cork as you normally would.
Most people fly into Cork (ORK) if they book a flight to Cork from Qatar. Cork is conveniently located just 6.5 km from Cork’s city centre.
This is defined as Doha Hamad Intl Airport (DOH) and Cork Airport (ORK). Codes like Cork Airport are often used to just call airports uniquely.