| Nonstop Flights: Austin to/from Calgary $228-$244 r/t â WestJet / American Airlines WestJet and American Airlines have round-trip flights from Austin (AUS) to Calgary (YYC) for $228-$244, NONSTOP or with connections. Flights April to June. Very few weekends available. Note: Carry-on bag is allowed for free on WestJet and American Airlines. You can avoid paying for seat selection by accepting the randomly assigned seat at the gate. We donât charge a subscription fee. All of our deal notifications are available for FREE via Instagram, Facebook, Twitter, our Webpage, and our E-mail list. If you are paying someone a subscription fee for our content, you are being ripped off. Read More Nonstop Flights: Austin to/from Calgary $228-$244 r/t â WestJet / American Airlines . | 