Seattle-Tacoma International ⇄ Missoula Montana SEA–MSO
Airlines flew 2,350 flights between Seattle-Tacoma International SEA in Seattle, WA and Missoula Montana MSO in Missoula, MT in the twelve months to July 2026, both directions together: 196,135 passengers in 266,669 seats, 74% of them filled, and 143,660 pounds of freight. 389 miles, about 59 minutes in the air, on 3 airlines: Horizon Air (1,086), Alaska Airlines Inc. (1,068), SkyWest Airlines Inc. (196). Planning to fly it yourself? The weather and winds along this route right now.
Flights by month both directions
By month, as a table
| flights | |
|---|---|
| 1/25 | 177 |
| 2/25 | 155 |
| 3/25 | 180 |
| 4/25 | 177 |
| 5/25 | 214 |
| 6/25 | 239 |
| 7/25 | 245 |
| 8/25 | 246 |
| 9/25 | 196 |
| 10/25 | 209 |
| 11/25 | 175 |
| 12/25 | 185 |
| 1/26 | 180 |
| 2/26 | 154 |
| 3/26 | 164 |
| 4/26 | 173 |
| 5/26 | 205 |
| 6/26 | 220 |
| 7/26 | 243 |
Passengers by month
By month, as a table
| passengers | |
|---|---|
| 1/25 | 14,881 |
| 2/25 | 13,873 |
| 3/25 | 15,752 |
| 4/25 | 14,377 |
| 5/25 | 17,014 |
| 6/25 | 18,041 |
| 7/25 | 19,971 |
| 8/25 | 19,173 |
| 9/25 | 15,185 |
| 10/25 | 16,003 |
| 11/25 | 14,838 |
| 12/25 | 16,666 |
| 1/26 | 14,928 |
| 2/26 | 13,326 |
| 3/26 | 15,121 |
| 4/26 | 14,330 |
| 5/26 | 17,005 |
| 6/26 | 19,445 |
| 7/26 | 20,115 |
The airlines twelve months, both directions
| Airline | Flights | Passengers | Seats filled | Service |
|---|---|---|---|---|
| Horizon Air QX | 1,086 | 70,865 | 86% | scheduled passenger service |
| Alaska Airlines Inc. AS | 1,068 | 112,170 | 66% | scheduled passenger service |
| SkyWest Airlines Inc. OO | 196 | 13,100 | 88% | scheduled passenger service |
The aircraft as the airlines report their types
| Aircraft | Flights | Seats a flight | Passengers |
|---|---|---|---|
| Embraer ERJ-175 | 1,282 | 76 | 83,965 |
| Boeing 737-700/700LR/Max 7 | 302 | 124 | 30,255 |
| Boeing 737-900ER | 273 | 178 | 28,707 |
| Boeing B737 Max 900 | 234 | 178 | 24,609 |
| Boeing 737-800 | 213 | 160 | 23,146 |
| Boeing B737 Max 800 | 46 | 160 | 5,453 |
SEA → MSO this direction alone · flown January 2025 to July 2026
1,176 flights of 1,198 scheduled, 97,295 passengers in 133,504 seats, 97,535 pounds of freight. Horizon Air 553; Alaska Airlines Inc. 535; SkyWest Airlines Inc. 88.
MSO → SEA this direction alone · flown January 2025 to July 2026
1,174 flights of 1,197 scheduled, 98,840 passengers in 133,165 seats, 46,125 pounds of freight, 1 pounds of mail. Alaska Airlines Inc. 533; Horizon Air 533; SkyWest Airlines Inc. 108.
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 Missoula Montana MSO; all routes.