Missoula Montana in January 2025

78.1%departed on time

BTS: A flight is counted as on time if it arrived less than 15 minutes after its scheduled time. Only carriers with at least 0.5 percent of domestic scheduled passenger revenue report.

In January 2025, reporting carriers scheduled 288 domestic departures from Missoula Montana (MSO). 78.1% left less than 15 minutes late and 72.9% reached their destination on time; 1.0% were cancelled.

Nationally that month, 79.3% of flights departed on time and 78.6% arrived on time, so MSO departures were 1.2 points below the national departure figure.

A year earlier, in January 2024, the airport had 242 departures with 69.0% leaving on time: a change of +9.1 points, with flights up 19%.

Flights arriving at MSO that month were on time 77.1% of the time (288 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 48%, late-arriving aircraft 28% and national aviation system 17%.

On time 72.9%
Arrived 15+ minutes late 26.0%
Cancelled 1.0%
Diverted 0.0%

Every scheduled departure from MSO in January 2025, judged by arrival at the destination.

January 2025 against a year earlier, the airport's year and the nation

Measure	Jan 2025	Jan 2024	MSO, 12 months to Jul 2026	All reported flights, Jan 2025
Departed on time	78.1%	69.0%	83.4%	79.3%
Arrived on time	72.9%	63.6%	82.1%	78.6%
Cancelled	1.0%	7.0%	0.7%	3.0%
Average departure delay (late minutes only)	29.4 min	35.7 min	14.8 min	14.0 min
Scheduled departures a day	10	8	14	17,992
Scheduled departures	288	242	5,003	539,747

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
OO SkyWest Airlines	85	30%	82.4%	0.7 min	1.2%
UA United Airlines	62	22%	67.7%	25.6 min	0.0%
DL Delta Air Lines	57	20%	82.5%	14.7 min	0.0%
AS Alaska Airlines	31	11%	61.3%	17.8 min	3.2%
MQ Envoy Air	25	9%	72.0%	-0.7 min	4.0%
G4 Allegiant Air	22	8%	59.1%	71.0 min	0.0%
AA American Airlines	6	2%	16.7%	394.5 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
MSO–SLC	Missoula to Salt Lake City	88	84.1%	4.1 min	1.1%
MSO–DEN	Missoula to Denver	85	71.8%	19.8 min	0.0%
MSO–DFW	Missoula to Dallas/Fort Worth	31	61.3%	78.3 min	3.2%
MSO–MSP	Missoula to Minneapolis	31	77.4%	14.5 min	0.0%
MSO–SEA	Missoula to Seattle	31	61.3%	17.8 min	3.2%
MSO–AZA	Missoula to Phoenix	13	61.5%	93.8 min	0.0%
MSO–LAS	Missoula to Las Vegas	9	55.6%	38.2 min	0.0%

By scheduled departure hour

100

On-time share:under 62%6270768288% and over

Share of departures that left less than 15 minutes late, by scheduled hour (local time), January 2025.

Delay causes

BTS cause category	Share of delay minutes	National, Jan 2025	Minutes
Air carrier	48.4%	36.2%	4,529
Late-arriving aircraft	28.1%	34.7%	2,630
National Aviation System	16.6%	19.9%	1,555
Extreme weather	6.8%	9.1%	637
Security	0.0%	0.2%	0

9,351 delay minutes on 75 flights that arrived 15 or more minutes late and carried a cause report. Carriers assign the categories; see what each category means.

Questions and answers

How many flights left MSO on time in January 2025?

78.1% of 288 scheduled domestic departures left less than 15 minutes late, and 72.9% reached their destination on time. The national figures that month were 79.3% and 78.6%.

How does that compare with a year earlier?

In January 2024, 69.0% of 242 departures left on time and 7.0% were cancelled, against 78.1% and 1.0% in January 2025.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for January 2025; public domain. Domestic scheduled flights by reporting carriers, totals and averages only. The site's data runs through July 2026. Full record for MSO · methodology · corrections.