If Delta's Airbus A330-900neo is rostered onto your US domestic flight, book Comfort+. It's your ticket to a free Premium Economy upgrade.
Review: Delta Airbus A330-900neo Comfort+ (New York – LA) - Point Hacks
Condor Business Class Will Give Lufthansa A Run For The Money - Live and Let's Fly
Review: Delta One Suites on the Brand-New Airbus A330-900neo - The Points Guy
Delta Premium Select Review on the Brand-New A330-900neo - The Points Guy
Delta started flying its 767-300 between Stockholm and JFK last year s
Review: Delta Airbus A330-900neo Comfort+ (New York – LA) - Point Hacks
Review: Delta Premium Select, Minneapolis to Paris
Review: Delta Airbus A330-900neo Comfort+ (New York – LA) - Point Hacks
The Best & Worst Planes for Delta One Business Class
Delta Leaks A330-900neo Seat Map