I've flown into Chicago (ORD) and have used their 'blue line' to head downtown...fare's something like 1.75 one way. Newark (EWR) i've heard has a train running to New York city. Montreal and Toronto's subway/train systems each fail to run directly to their airports.
What other airports have easy access to their downtown counterpart that would allow one to check out a city during a layover?
What other airports have easy access to their downtown counterpart that would allow one to check out a city during a layover?