1

http://www.skyscanner.net

2

Yeah, I like skyscanner but keep in mind it is not perfect and some of the prices are not all inclusive. I paid EUR360 return for Dublin-Rome in September last year booking two months ahead.

It is not a particularly cheap route and it is three hours of flying. And June is holiday time.

3

What is your definition of cheap and expensive?

Anything under €150 return on that route in June is not bad.

4

With some airlines to get the best prices it is necessary to go to the airline's own sites rather than use some agent or, in the case of airlines that refuse to have agency agreements, scalper. With some airlines, you get cheaper prices through agents, on the other hand, so always check both if you know they use agents.

One of the airlines flying Dublin Rome (Ciampino) is Ryanair, and I would advise you to use Ryanair's own site to find the correct price, as Ryanair does not have agency agreements, and anyone offering their tickets is a scalper who will charge you a premium. Aer Lingus (to Fiumicino) might also have different prices on its own site than through agents. Alitalia also has seasonal charters.

5

Aer Lingus (Ireland national carrier) -
Dublin - Rome (FCO) selected dates in June.. £72 (around €83). 3 hours direct non-stop.