For anybody looking to do a mileage run to earn a few more miles with Air Canada you can currently book a few different flights on United that will earn mileage at a pretty good cost/mile ratio (for North America).

Calgary (YYC) - Panama City (PTY) - 1104 CAD /20$825+ roundtrip
Edmonton (YEG) - Panama City (PTY) - 1104 CAD / $825+ roundtrip
Vancouver (YVR) - Santo Domingo (SDQ) - 1081 CAD / $808+ roundtrip

Best availability for the flights to Panama is over the next two months.

YYC-PTY
Same-Day Turnaround - Depart
May 28

1 Night Stay - Depart
May 17, 22, 26, 30
June 14, 17

Google Flights -
https://www.google.com/travel/flight...spZP88TeKxmR17
https://www.google.com/travel/flight...4EgtXaQWZkEKi8

Additional dates are available for longer stays

YYC-IAH-PTY-IAH-YYC (shortest routing - there are other routes with a double connection available)
Mileage Flown - 7036 miles
Aeroplan Points & SQM - 10554 (Cost per SQM - 7.8169 cents USD / .10 CAD)

YEG-PTY
Same Day Turnaround - Depart
May 12

1 Night Stay - Depart
May 22, 28
June 17

Google Flights - https://www.google.com/travel/flight...8SoBQ8g7chpV2A

Additional dates are available for longer stays

YEG-DEN-IAH-PTY-IAH-DEN-YEG (shortest routing - other routes available)
Mileage Flown - 7304 miles
Aeroplan Points & SQM - 10956 (Cost per SQM - 7.5301 cents USD / .10 CAD)


YVR-SDQ
Same Day Turnaround - Depart
No Dates Available

1 Night Stay - Depart
October 24, 28
November 28
January 28, 29

Google Flights - https://www.google.com/travel/flight...NogrS3dg1RgLM8

Additional dates are available for longer stays

YVR-DEN-EWR-SDQ-EWR-ORD-YVR
Mileage Flown - 8316 miles
Aeroplan Points & SQM - 12474 (Cost per SQM - 6.4775 cents USD / .087 CAD)