Originally Posted by
N830MH
correct! I knew there is no preclearance in YXE. It is further north of Edmonton, Canada, am I correct?
Incorrect. Saskatoon is quite a bit further south of Edmonton. If you look at a map, you'll see that Saskatoon is about as far north as Red Deer, AB (which is 1/2 way between Edmonton and Calgary).
AFAIK how far an airport is from the US border really does not have anything to do with whether there will be a US pre-clearance or not, it is likely more to do with the total number of transborder pax flying through the airport (to make it worthwhile for the USA to man a facility). Regina is further south than Calgary and it does not have those facilities.