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

Missoula Montana ⇄ Chicago O'Hare International MSO–ORD

Airlines flew 983 flights between Missoula Montana MSO in Missoula, MT and Chicago O'Hare International ORD in Chicago, IL in the twelve months to July 2026, both directions together: 77,820 passengers in 91,952 seats, 85% of them filled, and 203 pounds of freight. 1,332 miles, about 167 minutes in the air, on 3 airlines: Envoy Air (678), United Air Lines Inc. (200), SkyWest Airlines Inc. (105). Planning to fly it yourself? The weather and winds along this route right now.

983
flights, twelve months
MSO-ORD: 489 · ORD-MSO: 494
77,820
passengers
85% of seats filled
1,332
miles
about 167 minutes airborne
3
airlines
7 aircraft types

Flights by month both directions

045901341795/258/2512/253/266/261327/26
By month, as a table
flights
5/2520
6/25164
7/25179
8/25174
9/25143
10/2570
12/2527
1/2662
2/2656
3/2661
4/2659
5/2682
6/26117
7/26132

Passengers by month

04,1328,26412,39516,5275/258/2512/253/266/2614,8127/26
By month, as a table
passengers
5/252,396
6/2513,577
7/2516,527
8/2515,412
9/259,605
10/254,358
12/251,655
1/262,990
2/263,230
3/263,897
4/263,820
5/266,249
6/2611,792
7/2614,812

The airlines twelve months, both directions

AirlineFlightsPassengersSeats filledService
Envoy Air MQ67842,91184%scheduled passenger service
United Air Lines Inc. UA20028,06486%scheduled passenger service
SkyWest Airlines Inc. OO1056,84586%scheduled passenger service

The aircraft as the airlines report their types

AircraftFlightsSeats a flightPassengers
Embraer ERJ-1757677649,080
Boeing 737-80011816616,930
Airbus Industrie A320-100/200551506,953
Boeing 737-900ER181792,896
Embraer-Emb-1701665676
Boeing B737 Max 9006179961
Boeing B737 Max 8003166324

MSO → ORD this direction alone · flown May 2025 to July 2026

489 flights of 496 scheduled, 39,910 passengers in 45,524 seats, 44 pounds of freight. Envoy Air 338; United Air Lines Inc. 97; SkyWest Airlines Inc. 54.

ORD → MSO this direction alone · flown May 2025 to July 2026

494 flights of 495 scheduled, 37,910 passengers in 46,428 seats, 159 pounds of freight. Envoy Air 340; United Air Lines Inc. 103; SkyWest Airlines Inc. 51.

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: Missoula Montana MSO and Chicago O'Hare International ORD; all routes.