I will be in Sheffield on May 1st and trying to return to Warsaw on the next day, May 2nd. Unfortunately, there doesn't seem to be any direct flight on that day (Sunday). I wouldn't mind flying to another Polish city and taking the train to Warsaw but the closest I can get is Wizzair flying to Katowice which.. arrives at 00:50 during the night so too late.. Likewise, it's two changeovers if I want to go to by train to Luton or Stansted and fly to Warsaw. Any Poles living around Sheffield or Brits in Warsaw who have an idea what the best route might be?
East midlands airport ryanair flight to Wroclaw on the sunday. You can catch the train from Sheff and there is an airport link bus from Nottingham and/or Derby. Also ryanair to Krakow same day from EMA.
National express coach from Sheffield meadowhall to any other airport (EMA as well) or even the megabus but that's to London again from Meadowhall.
Liverpool to Warsaw with wizz air on sunday 2nd only problem it's an 08.30 flight. See the above link regarding the train from Sheffield to John Lennon airport.
I think it would be better to find a flight from the UK to Warsaw. Not Sheffield to Poland. Liverpool, Edinburgh, London or Birmingham. Wizzair EasyJet Rynair