Alaska frequently offers bonuses on purchased miles, typically as high as 40%. Alaska has just announced their latest such promotion, which is more of a flash sale, and it’s different than the ones they’ve offered in the past.
Through May 3, 2017, or “while supplies last,” Alaska Mileage Plan is offering 4,000 bonus miles when you buy 10,000 miles. This offer is only available to the first 2,500 members who take advantage of the promotion. I assume that if the website shows the 4,000 bonus miles when you make the purchase, you’re good to go.
Each member can take advantage of this promotion at most five times. If you purchase 10,000 miles you’ll receive a total of 14,000 miles at a cost of $295.63 including tax, which is a cost of ~2.11 cents per mile. That’s typically as cheap of a cost as you’ll see on the purchase of Alaska miles.