Missoula Montana in October 2025

87.8%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 October 2025, reporting carriers scheduled 369 domestic departures from Missoula Montana (MSO). 87.8% left less than 15 minutes late and 84.0% reached their destination on time; 0.0% were cancelled.

Nationally that month, 80.0% of flights departed on time and 79.1% arrived on time, so MSO departures were 7.8 points above the national departure figure.

A year earlier, in October 2024, the airport had 319 departures with 87.8% leaving on time: a change of 0.0 points, with flights up 16%.

Flights arriving at MSO that month were on time 86.4% of the time (369 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 42%, late-arriving aircraft 31% and extreme weather 16%.

On time 84.0%
Arrived 15+ minutes late 15.7%
Cancelled 0.0%
Diverted 0.3%

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

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

Measure	Oct 2025	Oct 2024	MSO, 12 months to Jul 2026	All reported flights, Oct 2025
Departed on time	87.8%	87.8%	83.4%	80.0%
Arrived on time	84.0%	85.0%	82.1%	79.1%
Cancelled	0.0%	0.0%	0.7%	0.5%
Average departure delay (late minutes only)	10.8 min	10.9 min	14.8 min	13.9 min
Scheduled departures a day	12	11	14	20,195
Scheduled departures	369	319	5,003	605,844

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
OO SkyWest Airlines	142	38%	84.5%	6.3 min	0.0%
DL Delta Air Lines	62	17%	93.5%	-2.4 min	0.0%
UA United Airlines	62	17%	77.4%	3.9 min	0.0%
AS Alaska Airlines	36	10%	88.9%	-5.3 min	0.0%
MQ Envoy Air	36	10%	80.6%	5.0 min	0.0%
G4 Allegiant Air	22	6%	68.2%	10.3 min	0.0%
AA American Airlines	5	1%	100.0%	-2.2 min	0.0%
F9 Frontier Airlines	4	1%	75.0%	6.0 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
MSO–DEN	Missoula to Denver	122	78.7%	6.2 min	0.0%
MSO–SLC	Missoula to Salt Lake City	92	93.5%	-2.6 min	0.0%
MSO–SEA	Missoula to Seattle	36	88.9%	-5.3 min	0.0%
MSO–ORD	Missoula to Chicago	35	77.1%	22.3 min	0.0%
MSO–DFW	Missoula to Dallas/Fort Worth	31	77.4%	7.3 min	0.0%
MSO–MSP	Missoula to Minneapolis	31	96.8%	-10.6 min	0.0%
MSO–AZA	Missoula to Phoenix	13	53.8%	22.0 min	0.0%
MSO–LAS	Missoula to Las Vegas	9	88.9%	-6.6 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), October 2025.

Delay causes

BTS cause category	Share of delay minutes	National, Oct 2025	Minutes
Air carrier	42.3%	34.0%	1,658
Late-arriving aircraft	31.3%	39.7%	1,226
National Aviation System	10.5%	22.9%	412
Extreme weather	15.9%	3.3%	621
Security	0.0%	0.1%	0

3,917 delay minutes on 58 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 October 2025?

87.8% of 369 scheduled domestic departures left less than 15 minutes late, and 84.0% reached their destination on time. The national figures that month were 80.0% and 79.1%.

How does that compare with a year earlier?

In October 2024, 87.8% of 319 departures left on time and 0.0% were cancelled, against 87.8% and 0.0% in October 2025.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for October 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.