The 6 Rarest Twin-Engine Aircraft Variants Flown By US Carriers In 2026

Walk through any major US airport in 2026, and the ramp seems dominated by a handful of familiar types: Boeing 737s, Airbus A320 family jets, and the occasional widebody aircraft. Look closer at airline fleet lists, though, and you'll find a few less common variants hiding in plain sight. Some are the last survivors of a once-common family, while others are unusual versions of otherwise familiar aircraft. One has become a single-carrier type in the United States after a rival shut down.