Originally Posted by Colin
What are the rules for using OnePass miles to upgrade Northwest operated flights? Specifically:
1. Full Fares
I assume this is just Y fares. Do these book into Z?
2. Select Fares
I think B for long-haul and B, M, H, Q for North America. Do these book into I?
If you're elite with CO you can upgrade on NWA from any fare purchased
For NA routes NWA uses "R" fare bucket for upgrades