BWI → DSM this direction alone · flown September 2025 to March 2026
4 flights of 2 scheduled, 363 passengers in 445 seats. Allegiant Air 1; Envoy Air 1; SkyWest Airlines Inc. 1; United Air Lines Inc. 1.
Source: the Bureau of Transportation Statistics' T-100 Segment table (all carriers). A flight is one departure performed on this segment; seats and passengers are the airlines' own monthly reports; "seats filled" is passengers divided by seats. The miles are the DOT's great-circle distance. Both ends: Baltimore/Washington International Thurgood MarshallBWI and Des Moines InternationalDSM; all routes.