Originally Posted by
formeraa
In certain airports, DL can rebook on WN even though there in no formal interline agreement between the two. They work it out at the local level.
Interesting. The one time I ended up on WN after a DL flight was cancelled, I had to book myself on WN (this happened in SLC), and DL canceled out the remainder of my ticket. When I asked for original routing credit, I got a response that 'we don't normally credit miles for canceled tickets, but as a one-time courtesy...'.