In keeping with the Christmas Markets in Europe, here is a photo essay of the one in Lincoln, United Kingdom; The Lincoln Christmas Market. – You can fly into any of the major U.K. airports, then take a local train to Lincoln.
The trains may be a tad pricey as this is one of the bigger Markets in the U.K. The closest airport for a U.S. carrier is Manchester (MAN), but you may also do Birmingham (BHX). This year (2018) it starts on December 6 and runs until the 9th.