Beginning January 1, 2018, SkyMiles members will be able to earn Medallion Qualifying Miles, Segments, and MQDs on WestJet. Earlier this month, it was announced that the two airlines were forming a joint venture, so it’s no surprise to see that you’ll now be able to fully earn on WestJet.

Per Delta, starting January 1, 2018:

(1) Partner-marketed flights will earn miles based on a percentage of distance flown* as determined by the fare class paid. Unless otherwise noted, mileage credit is only applicable to Delta partner flights that are marketed and operated by that partner or Delta.
(2) Medallion Qualification Miles (MQMs) are used as a counter to determine SkyMiles Medallion Status. Flights and itineraries eligible for MQMs will earn a minimum of 250 MQMs per segment.
(3) Medallion Qualification Dollars (MQDs) apply to Medallion qualification. Flights marketed by the partner will earn MQDs based on a percentage of distance flown* as determined by the fare class paid.

*For purposes of calculating mileage credit and MQDs, “distance flown” means the calculated distance between origin and destination, as determined by Delta in its sole discretion, regardless of the actual distance traveled on any individual flight.

In cases where these changes result in a loss of redeemable miles for tickets booked prior to 10/26/17 and flown after 1/1/18, customers may request mileage credit through the Mileage Request Form after all travel on a given ticket is completed.