Missoula

MSO · KMSO

Missoula Montana Airport

46.92°, -114.09°MT, United States

Passengers a year

1.1M

#139 busiest in the U.S.

14

nonstop destinations

18

airlines

16

departures a day

81.9%

arrivals on time

0.6%

flights cancelled

81.9%

load factor

The ten busiest routes from MSO, by passengers: DEN, SEA, SLC, MSP, ORD, DFW, PDX, AZA, LAS, LAXMSOSEAMSPORDDENDFWSLCAZALASLAXPDX
Nonstop routes — the ten busiest. Filed traffic, August 2025 – July 2026.

Airlines

United Airlines is the largest carrier at Missoula, with 31% of all passengers. 18 airlines fly from here.

Share of passengers · each carrier as a slice of the whole airport

United Airlines holds 31% of the airport — the 58th most concentrated of 79 small hubs. The nearest comparison is PNS at 31%.

AirlineSharePassengersSeats YoY
UA
United84% fullUnited Express · operated by SkyWest
30.7%327.7K+0.5%
AS
Alaska77% fullOperated by Horizon, SkyWest
24.7%263.9K+5.3%
DL
Delta82% fullDelta Connection · operated by SkyWest
24.1%257.3K+13.5%
AA
American84% fullAmerican Eagle · operated by Envoy, SkyWest
12.3%132K+4.5%
G4
Allegiant82% full
7.5%80.5K-12.2%
+Other airlines
0.7%7.7K—

Share, passengers and destinations count each airline’s own flights plus the regional flying sold under its brand. On-time covers the airline's own aircraft only — regional affiliates report to the government separately. Seats year on year compares the latest twelve months against the twelve before them.

Destinations

14 nonstop destinations from Missoula, all domestic.

100% domestic · 0% international · by departing passengers

Top domestic destinations

  • Denver (DEN)

    133.9K departing · 83% full

    United Airlines

  • Seattle (SEA)

    98.8K departing · 74% full

    Alaska Airlines

  • Salt Lake City (SLC)

    76.2K departing · 78% full

    Delta Air Lines

  • Minneapolis (MSP)

    56.2K departing · 83% full

    Delta Air Lines · Sun Country Airlines

  • Chicago (ORD)

    39.9K departing · 88% full

    American Airlines · United Airlines

  • Dallas-Fort Worth (DFW)

    38.2K departing · 85% full

    American Airlines

  • Portland (PDX)

    32.4K departing · 83% full

    Alaska Airlines

  • Mesa (AZA)

    21.6K departing · 86% full

    Allegiant Air

  • Las Vegas (LAS)

    13.1K departing · 75% full

    Allegiant Air

  • Los Angeles (LAX)

    8.8K departing · 72% full

    American Airlines · United Airlines

All nonstop destinations

14 nonstop · 6 airlines · 14 domestic / 0 intl

Aircraft

By share of departures at Missoula.

Body class · share of departures

When Missoula is busiest

Departures by month over the trailing year. Bars scale to the busiest month.

Aug

Sep

Oct

Nov

Dec

Jan

Feb

Mar

Apr

May

Jun

Jul

Departures a month · peak July 2026

Annual passengers since 1990

Total passengers, arriving and departing, in every year on record.

Passengers a year

Every year
1990
331,939
1991
358,973
1992
381,985
1993
407,435
1994
394,790
1995
409,426
1996
408,719
1997
475,752
1998
456,174
1999
488,649
2000
478,324
2001
465,926
2002
473,222
2003
584,105
2004
571,556
2005
599,762
2006
608,687
2007
606,835
2008
575,769
2009
560,583
2010
579,402
2011
582,694
2012
606,094
2013
593,285
2014
667,367
2015
697,935
2016
760,879
2017
772,550
2018
848,536
2019
903,606
2020
417,602
2021
765,720
2022
844,453
2023
913,289
2024
1,020,486
2025
1,048,344
2026
627,618 so far

Arriving on time

Of every 100 flights landing at Missoula, 82 touch down within 15 minutes of schedule, 17 arrive late, and 1 is cancelled.

See live FAA delays

Every 100 arrivals

On time 82Late 17Cancelled 1

12 min

average delay

30

flights cancelled

5K

arrivals measured

What holds flights up

Share of delay minutes

Most reliable here

SkyWest Airlines 85.6%

Least reliable here

Envoy Air 75.9%

Among US airports

#139

On time, month by month

Darker is better · 73.7%–89.1%

The weak spot is March 2026, when 73.7% of arrivals landed on time — 8.2 points below the year. The strongest was September 2025 at 89.1%.

Frequently asked

How busy is Missoula Montana Airport (MSO)?

Missoula Montana Airport handled about 1.1M passengers over the trailing 12 months, ranking #139 among U.S. airports by passengers, with roughly 16 departures a day.

Which airline is the largest at Missoula Montana Airport (MSO)?

United Airlines is the largest carrier at Missoula (MSO), flying about 31% of its passengers. 18 airlines serve Missoula in total.

How many places can you fly nonstop from Missoula Montana Airport (MSO)?

Missoula (MSO) has 14 nonstop destinations, all domestic.

How often do flights arrive on time at Missoula Montana Airport (MSO)?

About 81.9% of flights arriving at Missoula (MSO) touch down within 15 minutes of schedule, per US DOT figures. About 0.6% are cancelled.

What aircraft flies most from Missoula Montana Airport (MSO)?

The Embraer E175 flew the largest share of departures from Missoula (MSO), about 51% of the total.

Departing counts passengers leaving Missoula. Data: traffic August 2025 – July 2026, on-time August 2025 – July 2026. Source: US DOT Bureau of Transportation Statistics (T-100 Segment, On-Time Performance).