If you have SPG points, know that today is the last day to get a 30% bonus when switching your points from SPG to Marriott to United through their miles and nights program.
United does not charge fuel surcharges, including on Air Canada flights booked with United points.
19K SPG points will switch in your account to 57K Marriott points, and from there, you'll be left with 1K Marriott points leftover after the transfer, and 32.5K United miles.
If you transfer 90K SPG points, that turns into 270K Marriott points, and when you transfer them to United, you'll get 157K United miles and a 7 night stay at a Marriott property up to category 5.
Call Miles and Nights to put through the transfer by calling 1-800-321-7396.