Cost of an airmail stamp to Canada?

This rate applies to standard-sized envelopes weighing up to one ounce.

For letters weighing more than one ounce, the postage rate increases by $0.21 for each additional ounce.

For example, a two-ounce letter to Canada would cost $1.61 in postage.

Airmail stamps can be purchased at any United States Post Office or online at the USPS website.

When mailing a letter to Canada, be sure to attach the airmail stamp prominently to the front of the envelope.

It is also a good idea to write "Airmail" in large letters on the envelope, to ensure that your letter is handled and transported accordingly.