The 3 Cheapest Ways to go to Chicago from Montreal
Option 1 : By Plane starting at 352$
Option 2 : By Bus Line starting at 265$
Use the bus search engine Busbud or Rome2rio to find the cheapest rate for the dates you want to leave. With Rome2rio you can even see approximately that it's gonna cost you 300$ round way if you rent a car with 4 person.
Option 3 : With Interstude for 285$, stoping by Toronto and Niaraga Falls
Obvisouly this is the best deal :). By making you sleep on the bus from destination to destination, traveling like a real backpacker, we are able to offer you the cheapest way to go to Chicago from Montreal. Don't miss L'Amazing Race (Toronto, Chicago, Niagara Falls) May 1st-4th
If you are interested to go to Chicago, we also suggest you to read the 51 Totally Free Things to do in Chicago.