US/Canada pre-clearance points
 

Sorry if this was covered comprehensively elsewhere but searched and could not locate it, most of the posts have to do with only one select location. So my question is, in general, at WHICH USA and Canadian portals does one pre-clear customs and immigration for entrance into the other country? In my specific case it's ORD-YUL and then on the return YUL-EWR -- but maybe there is a comprehensive list somewhere of ALL locations where it happens -- maybe even make it a Sticky to reduce the need for repeated individual inquiries?

US Preclearance locations:

http://www.cbp.gov/contact/ports/pre...lear-locations

Canadian preclearance locations:

(none)

Clear Canada at YUL

Clear USA at YUL

See link above.

Unnecessary IMO - Got the link above after 5 seconds of Googling.

It was my impression CDN does not do preclearance.

IIRC, most major Canadian airports do have US preclearance. I know for a fact that YYJ does not, but it's not exactly a major airport @:-)

The agreements the US has signed with other countries permit those other countries to set up their own pre-clearance stations in the US. All have (so far) chosen not to, but nothing would prevent Canada from doing pre-clearance at, say, ORD.

Thank God Canada doesn't have preclearance at ORD. Connecting through from MCI or MCO or wherever I'd have to pre-clear then schlep through security again... No thanks. Do it at the end.

...and if there is an immigration or customs issue it means I can deal with it in my country, as opposed to on foreign soil

So as a Canadian?

US pre-clearance: Excellent

Canadian pre-clearance: Nope

:)

One anomaly is the midnight YEG-IAH flight that does not preclear due to US CBP not working 24/7 so this flight post clears at IAH.

One should check with the CBP toll free number or the Canadian airport number to check that CBP is "open" at the time of your departure. Some late departure will not get CBP pre-clear due to the cost of staffing odd hours for a few flights.

Excellent help, thanks all for the detailed replies and discussion.