First, join Alaska Mileage Plan (it’s free) to get your Mileage Plan number.

As a first time Rover.com customer, you will receive a $30 credit to spend on Rover services and 3 Mileage Plan miles per $1 on your first Rover.com booking if completed by October 1, 2019 when you register your Mileage Plan number at http://www.rover.com/alaskaairmp. Plus, you’ll get one Mileage Plan mile per dollar for any additional bookings made through October 1, 2019.

Current Rover.com customers will receive one mile per dollar spent on all bookings but are not eligible for the $30 credit or triple miles offer.