[AI0120]

Vivaaerobus beginning new nonstop flights to Mexico City starting September 27
Operates Sundays and Thursdays

Departs MEX 6pm gets to SAT 8:30pm
Departs SAT 9:40pm gets to MEX midnight

Believe they've attempted this route before as well, but could be trying to pick up the slack from Interjet who has suspended all flights from SAT.

Aeromexico is also adding a second daily Mexico City flight starting September 12, seems to only be in September though. The second flight operates Saturdays, Sundays, and Wednesdays. Flight goes back to 1x daily beginning in October.