Boeing Fld/King County International ⇄ St. Louis Downtown BFI–CPS
Airlines flew 3 flights between Boeing Fld/King County International BFI in Seattle, WA and St. Louis Downtown CPS in Cahokia/St Louis, IL in the twelve months to July 2026, both directions together: 173 passengers in 292 seats, 59% of them filled. 1,726 miles, about 102 minutes in the air, on 2 airlines: Air Canada (2), Delta Air Lines Inc. (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 | |
|---|---|
| 2/25 | 1 |
| 11/25 | 1 |
| 2/26 | 1 |
| 4/26 | 1 |
Passengers by month
By month, as a table
| passengers | |
|---|---|
| 2/25 | 49 |
| 11/25 | 51 |
| 2/26 | 56 |
| 4/26 | 66 |
The airlines twelve months, both directions
| Airline | Flights | Passengers | Seats filled | Service |
|---|---|---|---|---|
| Air Canada AC | 2 | 107 | 49% | charter passenger service |
| Delta Air Lines Inc. DL | 1 | 66 | 92% | charter passenger service |
The aircraft as the airlines report their types
| Aircraft | Flights | Seats a flight | Passengers |
|---|---|---|---|
| Airbus Industrie A320-100/200 | 2 | 110 | 107 |
| Boeing 757-200 | 1 | 72 | 66 |
BFI → CPS this direction alone · flown November 2025 to April 2026
2 flights, 117 passengers in 222 seats. Air Canada 1; Delta Air Lines Inc. 1.
CPS → BFI this direction alone · flown February 2025 to February 2026
1 flights, 56 passengers in 70 seats. Air Canada 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: Boeing Fld/King County International BFI and St. Louis Downtown CPS; all routes.