Until a few years ago, Alaska Airlines flew MD-80s with extended-range tanks on nonstop service from Anchorage (ANC) to Khabarovsk, Russia (KHV) as well as a few other cities in Russia like Vladivostok (VVO), Magadan (GDX), Yuzhno-Sakhalinsk (UUS), and Petropavlovsk-Kamchatski (PKC).
Some of these cities were tagged on, such as ANC-KHV-VVO, but the KHV segment was a nonstop.
"In this present crisis, government is not the solution to our problem - government IS the problem." - Ronald Reagan
Comments made here are my own and are not intended to represent the official position of Alaska Air Group