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

Missoula Montana ⇄ Portland International MSO–PDX

Airlines flew 1,029 flights between Missoula Montana MSO in Missoula, MT and Portland International PDX in Portland, OR in the twelve months to July 2026, both directions together: 64,453 passengers in 78,412 seats, 82% of them filled, and 12,584 pounds of freight. 418 miles, about 70 minutes in the air, on 3 airlines: Horizon Air (832), SkyWest Airlines Inc. (195), Allegiant Air (2). Planning to fly it yourself? The weather and winds along this route right now.

1,029
flights, twelve months
MSO-PDX: 513 · PDX-MSO: 516
64,453
passengers
82% of seats filled
418
miles
about 70 minutes airborne
3
airlines
2 aircraft types

Flights by month both directions

03162931241/254/257/2510/251/264/26927/26
By month, as a table
flights
1/2541
2/2532
3/2546
4/2560
5/2595
6/25120
7/25122
8/25124
9/2596
10/25112
11/25120
12/25112
1/2672
2/2656
3/2664
4/2660
5/2661
6/2660
7/2692

Passengers by month

01,8523,7045,5567,4081/254/257/2510/251/264/266,2417/26
By month, as a table
passengers
1/252,458
2/252,100
3/252,840
4/253,848
5/255,498
6/256,695
7/257,233
8/257,408
9/255,764
10/256,963
11/256,777
12/257,053
1/264,531
2/263,563
3/264,163
4/263,984
5/264,067
6/263,939
7/266,241

The airlines twelve months, both directions

AirlineFlightsPassengersSeats filledService
Horizon Air QX83251,53982%scheduled passenger service
SkyWest Airlines Inc. OO19512,62885%scheduled passenger service
Allegiant Air G4228679%charter passenger service

The aircraft as the airlines report their types

AircraftFlightsSeats a flightPassengers
Embraer ERJ-1751,0277664,167
Airbus Industrie A320-100/2002180286

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

513 flights of 520 scheduled, 32,571 passengers in 39,092 seats, 1,724 pounds of freight. Horizon Air 425; SkyWest Airlines Inc. 87; Allegiant Air 1.

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

516 flights of 518 scheduled, 31,882 passengers in 39,320 seats, 10,860 pounds of freight. Horizon Air 407; SkyWest Airlines Inc. 108; Allegiant Air 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: Missoula Montana MSO and Portland International PDX; all routes.