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

Seattle-Tacoma International ⇄ Chicago/Rockford International SEA–RFD

Airlines flew 451 flights between Seattle-Tacoma International SEA in Seattle, WA and Chicago/Rockford International RFD in Chicago/Rockford, IL in the twelve months to July 2026, both directions together: 497 passengers in 567 seats, 88% of them filled, and 32,916,777 pounds of freight. 1,659 miles, about 191 minutes in the air, on 4 airlines: Air Transport International (418), ABX Air Inc (29), United Air Lines Inc. (3), United Parcel Service (1). Planning to fly it yourself? The weather and winds along this route right now.

451
flights, twelve months
SEA-RFD: 245 · RFD-SEA: 206
497
passengers
88% of seats filled
1,659
miles
about 191 minutes airborne
4
airlines
4 aircraft types

Flights by month both directions

0224465871/254/257/2510/252/265/26577/26
By month, as a table
flights
1/2539
2/2524
3/2527
4/2525
5/2522
6/259
7/254
8/2515
9/2513
10/258
11/253
1/2629
2/2656
3/2661
4/2687
5/2662
6/2660
7/2657

Passengers by month

0911822733641/254/257/2510/252/265/2607/26
By month, as a table
passengers
1/250
2/250
3/25138
4/250
5/250
6/250
7/250
8/25364
9/250
10/250
11/250
1/260
2/260
3/26132
4/260
5/260
6/261
7/260

The airlines twelve months, both directions

AirlineFlightsPassengersSeats filledService
Air Transport International 8C4181100%charter cargo service
ABX Air Inc ABX290scheduled cargo service
United Air Lines Inc. UA349688%scheduled passenger service
United Parcel Service 5X10scheduled cargo service

The aircraft as the airlines report their types

AircraftFlightsSeats a flightPassengers
Boeing 767-300/300ER44701
Airbus Industrie A321-200n2200332
Boeing 737-8001166164
Boeing 757-200100

SEA → RFD this direction alone · flown January 2025 to July 2026

245 flights of 15 scheduled, 497 passengers in 567 seats, 17,628,926 pounds of freight, 1,940 pounds of mail. Air Transport International 227; ABX Air Inc 15; United Air Lines Inc. 3.

RFD → SEA this direction alone · flown January 2025 to July 2026

206 flights of 15 scheduled, 0 passengers, 15,287,851 pounds of freight. Air Transport International 191; ABX Air Inc 14; United Parcel Service 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: Seattle-Tacoma International SEA and Chicago/Rockford International RFD; all routes.