I am planning on crossing the border from Niagra falls to Buffalo, to catch a Southwest flight from BUF on 1:10 PM on Sunday October 21.

We will be staying on Sheraton YYZ near Pearson. The drive from Toronto Pearson to BUF is approximately 2 hours per Map Quest. How long does it take to cross the border on Sunday morning around 10:30 am ? I understand lines can get quite long lately, but when on Sunday do they start to be backed up ?

Unfortunantely the CBP and the candian customs web sites show current status, but they do not list like average wait times.

Do you have a crystal ball? Gosh for the hundreds of times I've crossed the border to catch a flight out of BUF, wait times at the border have varied anywhere from 0 minutes to 3 hours! Granted the 3 hr wait time was a long weekend mid Saturday morning, but really it's anyone's guess right now what will happen Oct 21! I predict that the wait time shouldn't be that long, maybe 30-60 minutes at the very most given the time of year. I like the layout of BUF, you can get from the checkin counter to the gate within a matter of minutes mid-day.

If you're that concerned about making the flight and have few or no options for later flights, stay at a hotel near BUF the night before! I have stayed at the Hilton Garden Inn that's across the street from BUF a few times, was very pleased with their service.

We waited two hours yesterday around noon at Lake Champlain.

I'd definitely do this. The drive from YYZ to BUF is long and boring.