Originally Posted by
nystateofmind
While the upgraded 767 offers the nicest product Delta does not offer codeshare with Alaska Airlines on that date for a flight that gets in early enough to make the SEA-CDG flight. Now what can be done is purchasing a separate ticket on Alaska Airlines for the BOI-SEA R/T and booking SEA-CDG-BHX R/T on Delta
On an international flight DL res should be able to price the AS flight(s) as part of the BOI --> BHX fare.