Which airline allows you to upgrade from Y to F?
I'm flying from LAX to ICN and my company is paying for a Y, but I was wondering which airline will allow me to fly the best product after upgrading with miles.
AFAIK, KE and SQ don't allow this and SQ in particular probably only allow upgrade into premium economy.
Last edited by dkjb3t4; Oct 18, 2017 at 6:11 pm