Missoula Montana in March 2026

76.1%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 March 2026, reporting carriers scheduled 376 domestic departures from Missoula Montana (MSO). 76.1% left less than 15 minutes late and 79.0% reached their destination on time; 1.3% were cancelled.

Nationally that month, 72.8% of flights departed on time and 73.2% arrived on time, so MSO departures were 3.3 points above the national departure figure.

A year earlier, in March 2025, the airport had 299 departures with 83.3% leaving on time: a change of −7.2 points, with flights up 26%.

Flights arriving at MSO that month were on time 72.3% of the time (376 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 53%, late-arriving aircraft 29% and national aviation system 16%.

On time 79.0%
Arrived 15+ minutes late 19.7%
Cancelled 1.3%
Diverted 0.0%

Every scheduled departure from MSO in March 2026, judged by arrival at the destination.

March 2026 against a year earlier, the airport's year and the nation

Measure	Mar 2026	Mar 2025	MSO, 12 months to Jul 2026	All reported flights, Mar 2026
Departed on time	76.1%	83.3%	83.4%	72.8%
Arrived on time	79.0%	79.9%	82.1%	73.2%
Cancelled	1.3%	0.0%	0.7%	2.9%
Average departure delay (late minutes only)	24.2 min	10.2 min	14.8 min	20.3 min
Scheduled departures a day	13	10	14	20,403
Scheduled departures	376	299	5,003	612,102

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
DL Delta Air Lines	93	25%	80.6%	-7.9 min	4.3%
OO SkyWest Airlines	93	25%	80.6%	16.9 min	0.0%
MQ Envoy Air	62	16%	69.4%	29.2 min	0.0%
UA United Airlines	62	16%	80.6%	0.8 min	0.0%
AS Alaska Airlines	43	11%	86.0%	11.2 min	2.3%
G4 Allegiant Air	23	6%	73.9%	14.4 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
MSO–DEN	Missoula to Denver	93	81.7%	14.3 min	0.0%
MSO–SLC	Missoula to Salt Lake City	92	81.5%	-4.6 min	2.2%
MSO–SEA	Missoula to Seattle	57	78.9%	15.0 min	1.8%
MSO–DFW	Missoula to Dallas/Fort Worth	31	77.4%	33.1 min	0.0%
MSO–MSP	Missoula to Minneapolis	31	83.9%	-16.2 min	6.5%
MSO–ORD	Missoula to Chicago	31	61.3%	25.2 min	0.0%
MSO–AZA	Missoula to Phoenix	14	85.7%	14.9 min	0.0%
MSO–PDX	Missoula to Portland	14	78.6%	8.8 min	0.0%
MSO–LAS	Missoula to Las Vegas	9	55.6%	13.6 min	0.0%
MSO–SFO	Missoula to San Francisco	4	100.0%	-5.5 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), March 2026.

Delay causes

BTS cause category	Share of delay minutes	National, Mar 2026	Minutes
Air carrier	52.5%	33.5%	4,101
Late-arriving aircraft	28.5%	39.3%	2,226
National Aviation System	16.0%	21.0%	1,250
Extreme weather	3.0%	5.9%	231
Security	0.0%	0.2%	0

7,808 delay minutes on 74 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 March 2026?

76.1% of 376 scheduled domestic departures left less than 15 minutes late, and 79.0% reached their destination on time. The national figures that month were 72.8% and 73.2%.

How does that compare with a year earlier?

In March 2025, 83.3% of 299 departures left on time and 0.0% were cancelled, against 76.1% and 1.3% in March 2026.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for March 2026; 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.