I booked last night.
Under £100 for travel via...
Wizz Air from London Luton to Krakow (flights were only a tenner each way which was daft cheap)
Then to get down there train from Edinburgh (an operator called Lumo do £25 flat fee train tickets from Edinburgh)
The only thing is the times aren't great but it isn't the worst. Getting there on the day of the game at noon and away the next day.