I'm flying from Seoul to Pittsburgh via Toronto on Air Canada. I have a 1 hour and 40 minute layover in Toronto and was wondering if I need to go through immigration and customs when I arrive in Toronto. If so, I'm wondering if 1 hour and 40 minutes is enough time to allow?

Hello!

Below is a link to the Pearson website, providing a description of the steps involved in an international to US connection (it’s possible to enter your specifics on the previous page):

https://www.torontopearson.com/en/co...estination=pit

It is difficult to say with certainty how long it will take to clear security and then US Customs and Immigration, if your flight will be on time and you’ll actually have 1hr40m etc….

Are both flights on one ticket and the connection was sold by Air Canada? If so, they believe it is possible!

Thanks! Very helpful.