I paid $1,500 to upgrade my Delta flight from NYC to Paris. Here's what I got, and whether I'd do it again.

Fonte: Business Insider

Kimberly Wilson paid $1,500 to upgrade her Delta flight. She details whether the hefty price was worth it. Kimberly WilsonKimberly Wilson paid $1,500 to upgrade to Delta One, the highest-tier cabin for international flights.