Best cities to depart from (US and Canada) when flying to Iceland?

What are the best cities to depart from (for both the US and Canada) in terms of flying time? If cheaper airfare options could also be recommended, it would be appreciated.

Public Comments

1. Boston, New york , Chicago , Newark , Montreal , Toronto , Ottawa , Edmonton , And Vancouver <
2. There are direct flights to Iceland from Boston, New York, Minneapolis, Toronto and Orlando. For flying times and fares see http://www.icelandair.com