American Airlines is teaming up with Porter Airlines, a Toronto-based carrier, up on a new codeshare partnership on travel between the U.S. and Canada. “Canada is one of the most popular destinations for travelers, and American is excited to partner with Porter Airlines to unlock more travel options for customers,” says American senior VP Anmol Bhargava in a release. “This partnership puts customers at the forefront, and we look forward to providing even more seamless transborder travel...