Fly from Washington DC to Kansas City for $138 round-trip, nonstop, including all taxes, on United.
This fare is valid for travel on Tuesdays, Wednesdays, and Thursdays, through December 17. Tickets require a 14-day advance purchase. Holiday blackouts do apply.
As seen by the below screen shot from United.com, we found seats departing departing Dulles on October 2, and returning from Kansas City on October 8.
For booking info, see our Fare Details.