The U.S. aircraft register, updated daily
Routes and flights · the DOT's airline reports, August 2025 to July 2026

Boeing Fld/King County International ⇄ Felts Field BFI–SFF

Airlines flew 506 flights between Boeing Fld/King County International BFI in Seattle, WA and Felts Field SFF in Spokane, WA in the twelve months to July 2026, both directions together: 1,241 passengers in 4,578 seats, 27% of them filled, and 46 pounds of freight. 233 miles, about 58 minutes in the air, on 2 airlines: Air Excursions LLC (505), Kenmore Air Harbor (1). Planning to fly it yourself? The weather and winds along this route right now.

506
flights, twelve months
BFI-SFF: 254 · SFF-BFI: 252
1,241
passengers
27% of seats filled
233
miles
about 58 minutes airborne
2
airlines
1 aircraft type

Flights by month both directions

0438612917218/251641691727/26
By month, as a table
flights
8/251
5/26164
6/26169
7/26172

Passengers by month

011723435246908/253674054697/26
By month, as a table
passengers
8/250
5/26367
6/26405
7/26469

The airlines twelve months, both directions

AirlineFlightsPassengersSeats filledService
Air Excursions LLC X45051,24127%scheduled passenger service
Kenmore Air Harbor M5100%charter passenger service

The aircraft as the airlines report their types

AircraftFlightsSeats a flightPassengers
Pilatus PC-1250691,241

BFI → SFF this direction alone · flown August 2025 to July 2026

254 flights of 255 scheduled, 634 passengers in 2,301 seats, 46 pounds of freight. Air Excursions LLC 253; Kenmore Air Harbor 1.

SFF → BFI this direction alone · flown May 2026 to July 2026

252 flights of 253 scheduled, 607 passengers in 2,277 seats. Air Excursions LLC 252.

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 Felts Field SFF; all routes.