Ryanair have flights to Eindhoven (NL). From what I can gather from the Eindhoven VVV website, there is a good christmas market there.
We are going for a weekend just before Christmas - flights with Ryanair cost $0.01 a few weeks back, hotel in the city centre with a swimming pool cost €40 for the room (with 2 adults & 2 children) and the Christmas fair & an Ice Sculpture thing are in the square right outside the hotel. Transfer from the airport to the city is reported to be short & easy.
All in all, not bad value. A weekend trip for 4 just before Christmas for something like €260 or so all in - a good use for my now finished SSIA contributions.
z