With CO you can now codeshare with Delta as well as with NW. I'm not sure if you only get Delta's new "enhanced" 1/2 mileage credit on the most sharply discounted fares or if you would still get full mileage under CO regulations. In any case you would have many more destinations available to you with the addition of Delta flights.

(I just checked and you will only get 1/2 miles toward CO Elite on Delta L,U and T fares. Just like us lucky Delta flyers.)

[This message has been edited by upgrader (edited 07-09-2003).]