Montrose Regional in December 2025

77.5%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 December 2025, reporting carriers scheduled 244 domestic departures from Montrose Regional (MTJ). 77.5% left less than 15 minutes late and 79.9% reached their destination on time; 0.4% were cancelled.

Nationally that month, 72.0% of flights departed on time and 71.9% arrived on time, so MTJ departures were 5.5 points above the national departure figure.

A year earlier, in December 2024, the airport had 248 departures with 74.2% leaving on time: a change of +3.3 points, with flights down 2%.

Flights arriving at MTJ that month were on time 75.7% of the time (243 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 66%, national aviation system 19% and air carrier 9%.

On time 79.9%
Arrived 15+ minutes late 19.7%
Cancelled 0.4%
Diverted 0.0%

Every scheduled departure from MTJ in December 2025, judged by arrival at the destination.

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

Measure	Dec 2025	Dec 2024	MTJ, 12 months to Jul 2026	All reported flights, Dec 2025
Departed on time	77.5%	74.2%	77.2%	72.0%
Arrived on time	79.9%	75.8%	77.5%	71.9%
Cancelled	0.4%	0.4%	1.2%	1.5%
Average departure delay (late minutes only)	21.1 min	20.2 min	23.0 min	21.2 min
Scheduled departures a day	8	8	7	19,410
Scheduled departures	244	248	2,526	582,304

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
UA United Airlines	75	31%	73.3%	16.5 min	1.3%
WN Southwest Airlines	57	23%	78.9%	4.4 min	0.0%
OO SkyWest Airlines	54	22%	87.0%	5.2 min	0.0%
AA American Airlines	28	11%	75.0%	11.3 min	0.0%
MQ Envoy Air	18	7%	94.4%	-5.3 min	0.0%
DL Delta Air Lines	12	5%	83.3%	-9.7 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
MTJ–DEN	Montrose/Delta to Denver	123	83.7%	5.4 min	0.0%
MTJ–DFW	Montrose/Delta to Dallas/Fort Worth	46	82.6%	4.8 min	0.0%
MTJ–ORD	Montrose/Delta to Chicago	14	78.6%	21.2 min	0.0%
MTJ–EWR	Montrose/Delta to Newark	13	38.5%	53.1 min	7.7%
MTJ–LAX	Montrose/Delta to Los Angeles	13	92.3%	2.8 min	0.0%
MTJ–SFO	Montrose/Delta to San Francisco	13	76.9%	7.6 min	0.0%
MTJ–ATL	Montrose/Delta to Atlanta	12	83.3%	-9.7 min	0.0%
MTJ–DAL	Montrose/Delta to Dallas	10	60.0%	2.8 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), December 2025.

Delay causes

BTS cause category	Share of delay minutes	National, Dec 2025	Minutes
Air carrier	8.8%	33.3%	408
Late-arriving aircraft	66.1%	41.1%	3,054
National Aviation System	19.1%	19.1%	884
Extreme weather	6.0%	6.4%	275
Security	0.0%	0.2%	0

4,621 delay minutes on 48 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 December 2025?

77.5% of 244 scheduled domestic departures left less than 15 minutes late, and 79.9% reached their destination on time. The national figures that month were 72.0% and 71.9%.

How does that compare with a year earlier?

In December 2024, 74.2% of 248 departures left on time and 0.4% were cancelled, against 77.5% and 0.4% in December 2025.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for December 2025; 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.