WestJet in late-June 2018 is ending 3 Trans-Border routes, reflected in recent schedule update as reservation is no longer available. Affected routes include the following.
Calgary – Chicago O’Hare Last flight on 28JUN18, currently served 6 weekly with 737-600/-700/-800
Calgary – Dallas/Ft. Worth Last flight on 27JUN18, currently served once a day with 737-600
Montreal – Boston Last flight on 27JUN18, currently served 2 daily with Dash8-Q400 (by WestJet Encore)