There are considerable discounts found for shows that are playing in January-March. The League of NY Theaters puts out a coupon book with discounts for most shows. The problem is that NY is prone to winter weather and you may have trouble with your flights if there's a snow storm. A word of advice: Don't book shows for your first two nights in NYC. Pick up those tickets when you're here. That way, if you have trouble making your connections, you won't forfeit the tickets. And believe me, you'll have no trouble picking up tickets an hour before curtain at that time of the year. Just don't expect to get seats for HAIRSPRAY or THE PRODUCERS--book those shows in advance for your third or fourth night.
Enjoy!
"Long live God!" (GODSPELL)