I am a bit confused by the system of upgrading using miles, thanks for any future help and here's the problem.
I am a silver holder with 33000 miles. I am planning to fly return out to BKK in business class and wish to upgrade to 1st on one of the legs. If I need to purchase a few extra miles that's cool but the Skywards website is not giving me the info.
Has anyone got the info or done this before?