problem with Delta one-way ticket: 12.5K on search page but 25K on confirmation page
I searched an one-way ticket from SFO-MIA on flying blue, which has the lowest award level on Delta.
the search page shows "Classic Award 12500 miles + 5 USD", however, after I clicked the "next, trip overview", the webpage says "Number of miles required 25000". There is a red sentence saying "Your Miles balance does not enable you to reserve an award ticket for this trip. Please modify your selection."
Does anyone know what happened here ?
Thanks,
Yi