Originally Posted by kiam

This is a reply from Delta.

Dear Mr. KIAM,

Thank you for contacting Delta Air Lines.

The information that you received from about Alaska Airlines from the
representative in Thailand is correct. You may travel on Alaska
Airlines for flights booked on Round the World bookings.

We very much appreciate your Platinum Medallion loyalty to Delta and
look forward to the privilege of serving you again soon.

Sincerely,

Sara Triviz
Platinum Medallion Desk
http://www.delta.com