What is the best way to get from Buffalo to Toronto?
Take I-290 to Peace Bridge. Once in Canada take QEW East to Toronto. If you are heading to the northern Toronto suburbs or to the Pearson Airport follow the 407 toll way east after you go over the bridge in Hamilton off of the QEW. Or take I-190 North to Lewiston Bridge then to the 405 to Qew east to 403 to 401 down to Toronto.
What is the least expensive way to get from Toronto to Buffalo Airport or from Buffalo Greyhound to Buffalo Airport?
Don't look now, but you'll never make it from Buffalo to Toronto on Highway 401, because 401 doesn't come anywhere near Buffalo. The highway from Buffalo to Toronto is called the Queen Elizabeth Way (QEW). If you want to avoid traffic, drive it in the middle of the night, around 2 to 4 a.m. Morning and evening rush hours, from Hamilton to Toronto the QEW is more like a parking lot.
The quickest and easiest way to get to Buffalo from Toronto is the QEW Hamilton, which changes to QEW Niagara. Take that to the Lewiston Queenston bridge and enter the United States, following the I-190 South until you reach I-290 East. Take the I-290 to the I-90 West to Exit #51E, Route 33. Take Route 33 right to the Buffalo Airport. The Buffalo Airport is about 2-2.5 hours from Downtown Toronto.