Cheap Bus tickets to Moscow, US

What are the most popular routes to Moscow?

Seattle - MoscowAverage price₪216Average duration8h 5mDaily departures3
Spokane - MoscowAverage price₪127Average duration2hDaily departures3
Pullman - MoscowAverage price₪61Average duration25mDaily departures3
Kansas City - MoscowAverage price₪460Average duration1d 15hDaily departures5
Ellensburg - MoscowAverage price₪171Average duration8h 15mDaily departures4