Washington Dulles International ⇄ St. Louis Downtown IAD–CPS
Airlines flew 8 flights between Washington Dulles International IAD in Washington, DC and St. Louis Downtown CPS in Cahokia/St Louis, IL in the twelve months to July 2026, both directions together: 372 passengers in 1,016 seats, 37% of them filled. 686 miles, about 104 minutes in the air, on 3 airlines: Delta Air Lines Inc. (5), Sun Country Airlines d/b/a MN Airlines (2), CFM Inc d/b/a Contour Airlines d/b/a One Jet Shuttle (1). Planning to fly it yourself? The weather and winds along this route right now.
Flights by month both directions
By month, as a table
| flights | |
|---|---|
| 1/25 | 2 |
| 2/25 | 3 |
| 3/25 | 2 |
| 4/25 | 1 |
| 5/25 | 2 |
| 7/25 | 1 |
| 3/26 | 2 |
| 4/26 | 3 |
| 5/26 | 2 |
| 7/26 | 1 |
Passengers by month
By month, as a table
| passengers | |
|---|---|
| 1/25 | 59 |
| 2/25 | 164 |
| 3/25 | 59 |
| 4/25 | 0 |
| 5/25 | 56 |
| 7/25 | 62 |
| 3/26 | 87 |
| 4/26 | 118 |
| 5/26 | 99 |
| 7/26 | 68 |
The airlines twelve months, both directions
| Airline | Flights | Passengers | Seats filled | Service |
|---|---|---|---|---|
| Delta Air Lines Inc. DL | 5 | 243 | 40% | charter passenger service |
| Sun Country Airlines d/b/a MN Airlines SY | 2 | 99 | 27% | charter passenger service |
| CFM Inc d/b/a Contour Airlines d/b/a One Jet Shuttle LF | 1 | 30 | 100% | charter passenger service |
The aircraft as the airlines report their types
| Aircraft | Flights | Seats a flight | Passengers |
|---|---|---|---|
| Boeing 757-200 | 5 | 123 | 243 |
| Boeing 737-800 | 2 | 186 | 99 |
| Bombardier Challenger 604/605 | 1 | 30 | 30 |
IAD → CPS this direction alone · flown January 2025 to May 2026
6 flights, 255 passengers in 758 seats. Delta Air Lines Inc. 4; CFM Inc d/b/a Contour Airlines d/b/a One Jet Shuttle 1; Sun Country Airlines d/b/a MN Airlines 1.
CPS → IAD this direction alone · flown January 2025 to July 2026
2 flights, 117 passengers in 258 seats. Delta Air Lines Inc. 1; Sun Country Airlines d/b/a MN Airlines 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: Washington Dulles International IAD and St. Louis Downtown CPS; all routes.