RYANAIR is very cheap. Depending on where your going you could also try Wizz Air and FlyNordic
Easy jet, fly Be, and Ryan Air. Easy Jet is the cheaper.
There are about 60. ETN and Whichbudget do the best job of keeping up with all of them, in my opinion.
I found Ryan Air to be the best while I was living in Europe. You can find some crazy specials. I flew from London to Glasgow for £1.50. That’s like $3.00.
you should look on travelocity in a bar is written flexible dates click there put your information and you will find low fares