Join Date: Nov 1999
Location: St. Louis, MO - AA PLT/2.98MM (Lifetime PLT), Delta PM, SPG Gold, AMEX Plat
Programs: TW Elite (RIP), CO OnePass
Posts: 1,923
It depends on the route. TWA offers (offered?) YUP fares on most routes (except non-stops to/from St. Louis). However, if a YUP fare is not offered, you cannot get a first class seat without paying to upgrade.
This is similar to Northwest's ConnectFirst fares.
Greg