Someone suggested ABE as the cheapest, if Im correct there isnt a flight to ABE but a Shuttle Bus. I dont know where it leaves from. Spent a night at The 4Points at ABE recently and saw it outside the term area by the curbwhen I did a drive thru to check the airport out.

You wont get to use the PC but you can always exit the Security area with 3 hrs down it shouldnt be a prob to have enough time to get back in. You can grab eats/drinks at Term B which arent inside the secure area. Its a 10 min walk or hop the tram. Term C doesnt have any places to eat outside the secure area if I remember correctly.