In a previous article, "Jules Beaudoin" said:
I have overflown Canada many, times from Buffalo to Port Huron. All you
have to do is file a regular flight plan, activate it and close it when you
get to your (US) destination. No need to talk with ATC US or CAN. But
don't land in Canada.

Have you done this since 9/11? Because you're supposed to be talking to
somebody when you cross the border.

http://www.aopa.org/members/files/tr...ada/can02.html

"You will also have to comply with the U.S. requirement for a Mode A and C
transponder (or a waiver) and for prior contact with a U.S. ATC facility
prior to crossing the border. Failure to do this will likely result in
interception."

--
Paul Tomblin http://xcski.com/blogs/pt/
If you don't pay for criminally bad software through the nose, you will
never realize how much you are being ripped off!
-- Pim van Riezen