Is there a reliable way of finding statistics on how often certain airlines cancel flights or certain routes get cancelled? Bonus points if that varies depending on the season.
I'm planning a trip in Southeast Asia, looking to take the Da Nang - Can Tho flight, which is only offered by Vietjet (VJC 702) and not very frequently. If that flight is cancelled, it will cramp the rest of the vacation, but the only alternative is flying to Ho Chi Minh and taking a many-hour bus ride, which is something I'd definitely want to avoid if not absolutely necessary.
From this question I checked flightstats.com, but they don't have any data for the route I'm interested. The main reason I'm worried about this specific route is that I read customer reviews online complaining about Vietjet's cancellations, but naturally that doesn't provide enough information to show whether it's actually a significant risk.