https://dailyhive.com/vancouver/ottawa-airport-yow-line-4-airport-link-train-downtown
Even before Montreal.
https://en.wikipedia.org/wiki/Airport_station_(Ottawa)
https://www.octranspo.com/en/our-services/stations-2/airport-01
https://www.yow.ca/about-yow/media-room/news/city-of-ottawa-o-train-starts-at-yow
https://www.cbc.ca/player/play/video/9.6615560
https://ottawacitizen.com/opinion/dudas-rail-link-ottawa-airport
https://www.cbc.ca/news/canada/ottawa/climb-aboard-ottawa-s-new-and-improved-trillium-line-1.3587749
An airport+line usually indicates that a railway terminal is there. However, in several cases, there just might be 1 or 2 airport stations on a general line.