Originally Posted by
fozz
I found the original thread
here.
The dates aren't 6/30 though. The NW agreement ended on 4/14 and the DL agreement ends on 7/31 according to the original release.
I think those original must be the dates they stop selling codeshares. I saw some CO#s on NW flights and NW/DL#s on CO flights in the past few weeks at various airports. Maybe the stopped selling CO codeshares on NW and NW codeshares on CO on 4/14, but they've definitely still been operating some under those codeshare numbers after that date.
Maybe 6/30 is when they stop
operating with NW/CO codeshares numbers?