Alright since we have the timing out of the way, lets see what happens with the airline. There are quite a few low cost airlines around europe (and no, low-cost not =dead), for example the most famous one is Ryanair. i mean i just booked a ticket from volos, greece to rome and it came out 4euro, thats ridiculous, not even the minimun cab fare is that cheap. and yeah ryanair is around 25years and no fatal accidents have been reported and look at AirFrance which has a couple. Furthermore you could look at EasyJet, german wings, norweigian and you can take a look for more HERE. you could always look through some sites which you book the tickets through them like momondo.
Now, the accomondation, well its always easy through couchsurfing, you get to stay for free, but more importantly, you are with someone who can show you how living in that certain city is, not just the touristy crappy staff. otherwise hostels. which you can find here and there, but you can always negotiate a better deal once you re there, FACT.
thats about it i think..