Today marks the day where you can transfer points from Virgin America Elevate to Alaska Airlines Mileage Plan. If you do not have a Mileage Plan account yet but did have an Elevate account as of December 5th you are eligible for this offer:

Offer details:
10,000 Bonus Mileage Plan Miles or a $100 Travel Credit if you join Alaska Airlines Mileage Plan. You must be a Virgin America Elevate member and have had that account prior to December 5. Full details. Until Jan 31, 17

Find more Mileage Plan bonus miles offers here.