I paid $900 to upgrade to Delta One to Europe. The suite was like a mini-hotel room, but the food was disappointing.

Source: Business Insider

I loved almost every minute of my 10-hour Delta One flight to Rome, but the food could be better. Jamie SandersI upgraded my Delta flight from the US to Europe to business class for $900. The fully-cocooned suite was private, and I loved the amenity kit and lie-flat bed.