Washington Dulles International Airport (IAD) is the origin airport and Lambert St Louis International Airport (STL) is the destination airport.
IAD and STL are approximately 694 miles apart by great-circle distance.
Yes. Roame's current schedule feed shows nonstop service from IAD to STL.
Airlines represented in the current schedule are Avianca (AV), Copa Airlines (CM), Lufthansa (LH), Brussels Airlines (SN) and United Airlines (UA).
Aircraft listed in the current schedule include CR5 and Embraer 175 (long wing) (E7W).