40 Airlines Where Upgrading Your Seat Is Actually Worth It

29. Delta Air Lines: Delta One Suites (Top-Tier Business)

While technically Business Class, Delta One Suites deserve mention for setting a standard that rivals many First Class products, especially regarding privacy. Found on many international routes, these suites feature a full-height door for complete enclosure, direct aisle access, ample workspace, memory foam cushions, and Westin Heavenly® Bedding. Combined with chef-curated meals, premium wines, and attentive service, Delta One Suites offer an exceptionally private and comfortable experience, making Delta a strong contender in the premium travel market.