Austrian Airlines is Austria's national Airline, but that doesn't mean they don't have low fares. Austrian Airlines has some "Red Ticket" offers that will get ypu to Austria and other places in Europe from 99€ return.
Brussels Airlines is born from the Belgian low cost carrier Virgin Express and Belgium's national Airlines SN Airlines.
Now they're offering the best of both worlds: no-frills flights, and a bit more of comfort for an additional price. Brussels Airlines fly to several destinations in Europe but also serve Africa and Asia.
CorsairFly is a French low cost Long Haul airline, serving destinations like Canada, the Caribbean and the Indian Ocean.
Sometimes is worth getting to Paris to catch a flight, as CorsairFly might take you to places like Saint Martin from 440€ return.
Martinair is an Amsterdam-based airline. They operate long haul flights from the Netherlands to several airports around the world.
Sometimes they have special offers with very low fares to the Caribbean, the USA or Asia.
Ryanair is about flying cheap... Everything else becomes a frill. When you board a RyanAir flight you have to be aware that you'll have to pay for everything (luggage, check-in at the airport...) except sometimes for the flight itself!
Few airlines can compete with Ryanair's low fares, so always check their website when looking for a cheap flight.
WizzAir is a very fast-growing airline from Central Europe. They have bases in Hungary, the Czech Republic, Romania and Ukraine.
Flights with Wizzair start at 14,99€ including tax, which is great value for money.