Air Canada Express (Jazz) has Starlink Wi-Fi on some planes: under 99 ms latency. It is free with Aeroplan. It works throughout the flight.
Does Air Canada Express (Jazz) have Wi-Fi?
Yes, Starlink
Free with Aeroplan
On some planes
How good it is
- Under 99 ms latency
When it works
Gate to gate
It works for all of the flight, gate to gate.
Where it works

Everywhere except over Russia, China, India, Pakistan, Belarus, North Korea and Northern Cyprus.