We booked in early August for £90 (went up to £100 shortly after although it was £60 return two frigging days earlier)
Wizz: Mon 13th - Doncaster/Sheffield 08.10 to Warsaw (Chopin) 11.35
Wizz: Wed 15th - Warsaw (Chopin) 06.10 to Doncaster/Sheffield 07.40
Six of us booked and managed to get accommodation for £40 each too. Result.
6 of us booked on the same outward flight Monday. returning Thursday from Posnan.Train down to Donny Sunday dinnertime,Staying at the Ramada across from the airport.