Montrose Regional in May 2026

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 May 2026, reporting carriers scheduled 146 domestic departures from Montrose Regional (MTJ). 78.1% left less than 15 minutes late and 79.5% reached their destination on time; 0.7% were cancelled.

Nationally that month, 77.1% of flights departed on time and 77.6% arrived on time, so MTJ departures were 1.0 points above the national departure figure.

A year earlier, in May 2025, the airport had 129 departures with 75.2% leaving on time: a change of +2.9 points, with flights up 13%.

Flights arriving at MTJ that month were on time 67.1% of the time (146 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 38%, air carrier 24% and national aviation system 22%.

On time 79.5%
Arrived 15+ minutes late 18.5%
Cancelled 0.7%
Diverted 1.4%

Every scheduled departure from MTJ in May 2026, judged by arrival at the destination.

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

Measure	May 2026	May 2025	MTJ, 12 months to Jul 2026	All reported flights, May 2026
Departed on time	78.1%	75.2%	77.2%	77.1%
Arrived on time	79.5%	72.9%	77.5%	77.6%
Cancelled	0.7%	0.8%	1.2%	0.9%
Average departure delay (late minutes only)	18.2 min	27.3 min	23.0 min	16.0 min
Scheduled departures a day	5	4	7	20,391
Scheduled departures	146	129	2,526	611,735

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
UA United Airlines	62	42%	82.3%	-0.5 min	1.6%
WN Southwest Airlines	31	21%	90.3%	-2.9 min	0.0%
OO SkyWest Airlines	28	19%	78.6%	-3.7 min	0.0%
AA American Airlines	25	17%	60.0%	38.2 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
MTJ–DEN	Montrose/Delta to Denver	104	83.7%	-0.1 min	1.0%
MTJ–DFW	Montrose/Delta to Dallas/Fort Worth	31	64.5%	29.8 min	0.0%
MTJ–ORD	Montrose/Delta to Chicago	9	77.8%	-12.9 min	0.0%
MTJ–LAX	Montrose/Delta to Los Angeles	2	100.0%	-42.5 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), May 2026.

Delay causes

BTS cause category	Share of delay minutes	National, May 2026	Minutes
Air carrier	24.4%	33.0%	540
Late-arriving aircraft	38.0%	40.4%	840
National Aviation System	21.6%	20.5%	478
Extreme weather	15.9%	6.0%	351
Security	0.0%	0.1%	0

2,209 delay minutes on 27 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 MTJ on time in May 2026?

78.1% of 146 scheduled domestic departures left less than 15 minutes late, and 79.5% reached their destination on time. The national figures that month were 77.1% and 77.6%.

How does that compare with a year earlier?

In May 2025, 75.2% of 129 departures left on time and 0.8% were cancelled, against 78.1% and 0.7% in May 2026.

Provenance

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