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 ⇄ Denver International BFI–DEN

Airlines flew 192 flights between Boeing Fld/King County International BFI in Seattle, WA and Denver International DEN in Denver, CO in the twelve months to July 2026, both directions together: 426 passengers in 788 seats, 54% of them filled, and 2,996,451 pounds of freight. 1,026 miles, about 98 minutes in the air, on 5 airlines: United Parcel Service (182), Air Canada (5), Delta Air Lines Inc. (2), SkyWest Airlines Inc. (2) and 1 more. Planning to fly it yourself? The weather and winds along this route right now.

192
flights, twelve months
BFI-DEN: 4 · DEN-BFI: 188
426
passengers
54% of seats filled
1,026
miles
about 98 minutes airborne
5
airlines
5 aircraft types

Flights by month both directions

051016214/258/2511/252/265/26197/26
By month, as a table
flights
4/253
5/252
7/2511
8/2517
9/2516
10/2519
11/2512
12/252
1/2615
2/2618
3/2618
4/2621
5/2617
6/2618
7/2619

Passengers by month

036721071434/258/2511/252/265/2607/26
By month, as a table
passengers
4/2565
5/2579
7/250
8/250
9/250
10/250
11/250
12/2594
1/260
2/260
3/2653
4/26143
5/2670
6/2666
7/260

The airlines twelve months, both directions

AirlineFlightsPassengersSeats filledService
United Parcel Service 5X1820scheduled cargo service
Air Canada AC524670%charter passenger service
Delta Air Lines Inc. DL213694%charter passenger service
SkyWest Airlines Inc. OO200%scheduled passenger service
Global Crossing Airlines, Inc. GCA14423%charter passenger service

The aircraft as the airlines report their types

AircraftFlightsSeats a flightPassengers
Boeing 767-300/300ER14600
Boeing 757-200384136
Airbus Industrie A320-100/200570246
Canadair RJ-200ER /RJ-4402500
Airbus Industrie A321Neoxlr119444

BFI → DEN this direction alone · flown April 2025 to June 2026

4 flights of 1 scheduled, 157 passengers in 386 seats. Air Canada 1; Delta Air Lines Inc. 1; Global Crossing Airlines, Inc. 1; SkyWest Airlines Inc. 1.

DEN → BFI this direction alone · flown April 2025 to July 2026

188 flights of 183 scheduled, 269 passengers in 402 seats, 2,996,451 pounds of freight, 1,380 pounds of mail. United Parcel Service 182; Air Canada 4; Delta Air Lines Inc. 1; SkyWest Airlines 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: Boeing Fld/King County International BFI and Denver International DEN; all routes.