Best Airline Upgrade Rates?
I have to fly to Paris for work. The company is only paying for economy.
I’m fine to upgrade myself with points or cash. Who typically has the best upgrade options in terms of
cost? I’ve found that upgrades on KLM are typically cheaper than Delta. Is the same true for AirFrance?
Preference for a nonstop between JFK/EWR and CDG but willing to lay over if it means that I’ll have batter upgrade rate.
Thanks for your help!