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

Missoula Montana ⇄ Denver International MSO–DEN

Airlines flew 2,403 flights between Missoula Montana MSO in Missoula, MT and Denver International DEN in Denver, CO in the twelve months to July 2026, both directions together: 270,435 passengers in 323,722 seats, 84% of them filled, and 3,917 pounds of freight. 679 miles, about 94 minutes in the air, on 3 airlines: United Air Lines Inc. (1,432), SkyWest Airlines Inc. (943), Frontier Airlines Inc. (28). Planning to fly it yourself? The weather and winds along this route right now.

2,403
flights, twelve months
MSO-DEN: 1,200 · DEN-MSO: 1,203
270,435
passengers
84% of seats filled
679
miles
about 94 minutes airborne
3
airlines
11 aircraft types

Flights by month both directions

0661311962621/254/257/2510/251/264/262477/26
By month, as a table
flights
1/25168
2/25156
3/25178
4/25179
5/25184
6/25209
7/25262
8/25258
9/25194
10/25243
11/25178
12/25184
1/26186
2/26166
3/26188
4/26181
5/26186
6/26192
7/26247

Passengers by month

07,19414,38821,58228,7761/254/257/2510/251/264/2628,7767/26
By month, as a table
passengers
1/2518,718
2/2517,987
3/2520,347
4/2519,510
5/2521,472
6/2521,581
7/2527,450
8/2526,083
9/2519,888
10/2526,282
11/2520,639
12/2522,045
1/2618,592
2/2618,667
3/2622,434
4/2622,043
5/2621,927
6/2623,059
7/2628,776

The airlines twelve months, both directions

AirlineFlightsPassengersSeats filledService
United Air Lines Inc. UA1,432211,96385%scheduled passenger service
SkyWest Airlines Inc. OO94355,48680%scheduled passenger service
Frontier Airlines Inc. F9282,98650%scheduled passenger service

The aircraft as the airlines report their types

AircraftFlightsSeats a flightPassengers
Embraer ERJ-1756747540,493
Boeing 737-80054116676,145
Boeing B737 Max 90051517979,165
Boeing 737-900ER33717951,561
Canadair RJ-7002697014,993
Boeing B737 Max 800211663,003
Airbus Industrie A321-200n122401,107
Airbus Industrie A320-200n121861,429
Airbus Industrie A320-100/200101501,282
Airbus Industrie A3198126807
Airbus Industrie A321Neoxlr4230450

MSO → DEN this direction alone · flown January 2025 to July 2026

1,200 flights of 1,202 scheduled, 133,890 passengers in 161,628 seats. United Air Lines Inc. 715; SkyWest Airlines Inc. 471; Frontier Airlines Inc. 14.

DEN → MSO this direction alone · flown January 2025 to July 2026

1,203 flights of 1,203 scheduled, 136,545 passengers in 162,094 seats, 3,917 pounds of freight. United Air Lines Inc. 717; SkyWest Airlines Inc. 472; Frontier Airlines Inc. 14.

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 Denver International DEN; all routes.