Lille to pair?
 

Has anyone taken the eurostar from brussels to Lille, then from Lille to pair. or do you think flying would be easier?

The Eurostar between Bruxelles and Lille is only 35 minutes
If pair means Paris, it's just one hour between Lille and Paris by train - the are no flights
(And Paris- Bruxelles is 1h30)
Flying would be much more complicated and longer

Hi g,

Where is "pair"?

((I))

I don't quite understand your question. Are you wanting to spend time in Lille? If not you can take a train directly from Brussels to Paris.

Whichever, it certainly is a lot faster and more convenient than flying

Again assuming that "pair" refers to Paris, there are plenty of direct/nonstop Eurostar trains between Brussels and Paris. We've taking both Eurostar and flights between the two cities and the train is much quicker, more comfortable and less hassle.