I was hoping to see a Jet's game while in N.Y. but they won't even be playing while I'm there. So...next best, I thought i could take an overnight trip to Philly to see the eagles/ravens game. Do I have any travel options getting there other than renting a car?

You can take Amtrak from Penn Station, NYC, to Philadelphia. However, my understanding is all Eagles home games are sold out.

Jets? Eagles?
Come up to Foxboro and see a real football team!

All NE Patriots games are sold out for season - so if you go to Foxboro, you will need to pay a scalper or watch on TV

unadvertised...single game ticket sales. most teams have individual tickets available, its the season tickets that are sold out. check with the teams before ticketmaster or scalpers. all team links from NFL.com usually if the jets arent playing the giants are since they "share" the stadium. if you have any interest in the giants, check their schedule.