Originally Posted by
gobears293
Odd observation... the flights on Delta.com are showing all economy for ~$700 or PE for $1600 (C+ on the SFOLAX segment). But then Air France only shows PE, no Y at all, with a price of $870. Also showing the "Promotional Fare" banner. So we'd book on Air France, but obviously credit to Delta.
Most likely differences in date classes available depending on the flight marketing. Ie AF123 will have different availability from DL8123 even though DL8123 is really AF123.