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

Kansas City International ⇄ Boeing Fld/King County International MCI–BFI

Airlines flew 5 flights between Kansas City International MCI in Kansas City, MO and Boeing Fld/King County International BFI in Seattle, WA in the twelve months to July 2026, both directions together: 235 passengers in 785 seats, 30% of them filled. 1,490 miles, about 221 minutes in the air, on 3 airlines: Sun Country Airlines d/b/a MN Airlines (3), Caribbean Sun Airlines, Inc. d/b/a World Atlantic Airlines (1), Delta Air Lines Inc. (1). Planning to fly it yourself? The weather and winds along this route right now.

5
flights, twelve months
MCI-BFI: 3 · BFI-MCI: 2
235
passengers
30% of seats filled
1,490
miles
about 221 minutes airborne
3
airlines
3 aircraft types

Flights by month both directions

0122313/251135/26
By month, as a table
flights
3/251
9/251
3/261
5/263

Passengers by month

0306192122673/2570431225/26
By month, as a table
passengers
3/2567
9/2570
3/2643
5/26122

The airlines twelve months, both directions

AirlineFlightsPassengersSeats filledService
Sun Country Airlines d/b/a MN Airlines SY312222%charter passenger service
Caribbean Sun Airlines, Inc. d/b/a World Atlantic Airlines WL14328%charter passenger service
Delta Air Lines Inc. DL17097%charter passenger service

The aircraft as the airlines report their types

AircraftFlightsSeats a flightPassengers
Boeing 737-8003186122
McDonnell Douglas DC9 Super 80/MD81/82/83/88115543
Boeing 757-20017270

MCI → BFI this direction alone · flown March 2025 to May 2026

3 flights, 124 passengers in 527 seats. Sun Country Airlines d/b/a MN Airlines 2; Caribbean Sun Airlines, Inc. d/b/a World Atlantic Airlines 1.

BFI → MCI this direction alone · flown September 2025 to May 2026

2 flights, 111 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: Kansas City International MCI and Boeing Fld/King County International BFI; all routes.