14 Airlines Offering Surprising Business Class Upgrades That Don't Break the Bank

5. Delta Air Lines: Delta One Suites

Delta One Suites, particularly on their Airbus A350 and A330-900neo, offer a genuine First Class feel. Each suite features a sliding door for ultimate privacy, ample personal space, and lie-flat beds. Combined with Westin Heavenly bedding, elevated dining, and excellent service, Delta One delivers a premium domestic and international experience. Strategic use of SkyMiles or sale fares can make this top-tier product surprisingly accessible.