Airport · MTJ · Montrose/Delta, Colorado

Montrose/Delta, CO

Montrose/Delta, CO posts below-median on-time performance among the 382 tracked U.S. airports, as a mid-size U.S. airport. According to the U.S. DOT Bureau of Transportation Statistics, drawn from 32,233 flights (2020–2025); its biggest delay driver is late aircraft.

Compiled by PlainFlights Editorial, Flight Performance Editorial Team

Data updated 2026-06-13

81.3%
On-time: Top 75%
on-time, US airports: 79 min
Delay when late: 1.33%
Cancelled

Key Performance Metrics

Total Flights

32,233

Best Month

Apr 94.4%

Worst Month

Jun 88.4%

Delayed

6,020

Cancelled

428

60-65%

1
65-70%

4
70-75%

9
75-80%

48
80-85%

192
85-90%

116
90-95%

12

What this shows MTJ is marked in the 80-85% band.

Delay Cause Breakdown

Top delay cause: Late Aircraft. Total delay minutes: 265,602.

Late Aircraft 40.6% (107,966 min)

Carrier 35.1% (93,315 min)

NAS (National Aviation System) 19.6% (51,946 min)

Weather 4.5% (11,857 min)

Security 0.2% (518 min)

Seasonal Performance Patterns

Monthly averages across all years of data. Best month: April (94.4% on-time). Most delays: June (88.4% on-time).

Month	Avg Flights	Avg Delayed	Avg Cancelled	On-Time %
December	567	134	8	88.5%
November	243	30	1	94%
October	269	36	3	93.3%
September	362	59	0	91.9%
August	432	82	3	90.6%
July	445	101	5	88.7%
June	395	90	2	88.4%
May	261	44	2	92.2%
April	270	35	7	94.4%
March	756	125	18	91.3%
February	673	136	14	90%
January	701	132	9	90.8%

Year-Over-Year Performance

Annual flight volume and on-time trends at MTJ.

Year	Flights	Delayed	Cancelled	On-Time %
2025	4,838	567	19	88.3%
2024	5,712	566	27	90.1%
2023	5,382	551	45	89.8%
2022	6,070	590	88	90.3%
2021	6,277	488	120	92.2%
2020	3,954	219	129	94.5%

Cancellation & Diversion Analysis

Flight disruption statistics for Montrose/Delta, CO.

Cancellation Rate

1.33%

428 of 32,233 flights

Diversion Rate

0.21%

67 of 32,233 flights

Delay Rate

18.7%

6,020 of 32,233 flights

Monthly Performance

Recent 24 months of flight data.

Period	Flights	Dep Delayed	Arr Delayed	Cancelled	Diverted
Dec 2025	487	54	59	1	0
Nov 2025	238	6	9	0	0
Oct 2025	307	31	30	1	0
Sep 2025	348	37	35	0	0
Aug 2025	368	51	52	3	4
Jul 2025	398	71	64	3	2
Jun 2025	376	69	59	1	0
May 2025	258	31	29	1	1
Apr 2025	258	22	35	1	0
Mar 2025	706	77	56	2	1
Feb 2025	538	53	62	1	1
Jan 2025	556	65	59	5	0
Dec 2024	496	63	61	1	0
Nov 2024	236	25	22	2	0
Oct 2024	260	9	7	0	0
Sep 2024	390	22	24	0	0
Aug 2024	498	31	41	1	0
Jul 2024	502	62	65	5	3
Jun 2024	480	54	54	2	3
May 2024	302	36	41	3	0
Apr 2024	306	18	23	1	0
Mar 2024	778	74	64	4	3
Feb 2024	712	86	86	4	0
Jan 2024	752	86	97	4	0

Top Routes from MTJ

Busiest routes to and from Montrose/Delta, CO.

Route	Flights	On-Time	Distance
MTJ (Montrose/Delta) → DEN (Denver)	8,502	79.8%	196 mi
DEN (Denver) → MTJ (Montrose/Delta)	8,499	80.5%	196 mi
DFW (Dallas/Fort Worth) → MTJ (Montrose/Delta)	3,213	82.6%	722 mi
MTJ (Montrose/Delta) → DFW (Dallas/Fort Worth)	3,213	79.3%	722 mi
ORD (Chicago) → MTJ (Montrose/Delta)	814	79.9%	1,081 mi
MTJ (Montrose/Delta) → ORD (Chicago)	813	84.4%	1,081 mi

Airports With a Similar On-Time Rate

Other U.S. airports nationwide whose on-time rate is closest to Montrose/Delta, CO's 81.3%.

Philadelphia, PA

81.3% on-time 1,060,086 flights

St. Louis, MO

81.3% on-time 687,272 flights

Memphis, TN

81.3% on-time 251,985 flights

Traverse City, MI

81.3% on-time 50,174 flights

New York, NY

81.2% on-time 1,574,867 flights

Providence, RI

81.2% on-time 160,073 flights

Other Airports in Colorado

Compare performance with other Colorado airports.

DEN 78.9%

Denver, CO

Denver · 3,293,040 flights

COS 80.4%

Colorado Springs, CO

Colorado Springs · 134,711 flights

ASE 73.5%

Aspen, CO

Aspen · 78,805 flights

GJT 85.1%

Grand Junction, CO

Grand Junction · 47,063 flights

DRO 83.4%

Durango, CO

Durango · 42,722 flights

EGE 78%

Eagle, CO

Eagle · 37,271 flights

HDN 79.7%

Hayden, CO

Hayden · 27,069 flights

GUC 82.9%

Gunnison, CO

Gunnison · 9,819 flights

Keep exploring

More flight data around Montrose/Delta, CO.

Colorado flight data

Statewide on-time and delay aggregates, plus every reporting airport in Colorado.

View CO data →

Airport rankings

See where MTJ sits among U.S. airports on on-time rate and average delay.

Best on-time airports →

Compare airports

Put MTJ head-to-head with another airport on delays and reliability.

Open comparison tool →

What the Data Says About MTJ

Montrose/Delta, CO in Montrose/Delta, Colorado handled 32,233 flights in the Bureau of Transportation Statistics dataset between 2020 and 2025, posting a 81.3% on-time departure rate. Of those flights, 6,020 experienced delays, 428 were cancelled, and 67 were diverted. The cancellation rate works out to 1.33%, the diversion rate to 0.21%, and the average delay when departures run late is 78.9 minutes. These figures are the baseline for comparing MTJ against other airports in the same state and nationally.

Breaking down what drives delays at MTJ, Late Aircraft leads the pack. Late Aircraft accounts for 40.6% of total delay minutes, followed by Carrier at 35.1% and NAS (National Aviation System) at 19.6%. Weather contributes 4.5% of delay minutes at this airport, while security holds the smallest share at 0.2%. Travelers often overestimate the weather share; the BTS categorization shows late-arriving aircraft and carrier operations as the larger contributors.

Seasonally, April runs the cleanest at MTJ with a 94.4% on-time rate, while June is the roughest at 88.4% - a 6-point swing between best and worst month. Volume peaks in March, when average flights hit 756. The busiest route connecting MTJ is to DEN (Denver), with 8,502 flights at a 79.8% on-time rate. Combine these numbers - 81.3% on-time, 78.9-minute average delay, 1.33% cancellation rate, and you have a concrete picture of departure reliability at Montrose/Delta, CO.

Frequently Asked Questions

What is the on-time performance rate at Montrose/Delta, CO (MTJ)? ▼

Montrose/Delta, CO has an overall on-time departure rate of 81.3%. Out of 32,233 total flights tracked, 6,020 experienced delays and 428 were cancelled.

What is the most common cause of delays at MTJ? ▼

The top delay cause at Montrose/Delta, CO is Late Aircraft. Late Aircraft accounts for 40.6% of all delay minutes.

What is the average delay time at MTJ? ▼

The average delay at Montrose/Delta, CO is 78.9 minutes. This includes delays from carrier issues, weather, National Aviation System constraints, security, and late-arriving aircraft.

What is the best month to fly from MTJ? ▼

Based on historical data, April has the best on-time performance at MTJ with 94.4% of flights departing on time.

What is the worst month for delays at MTJ? ▼

June tends to have the most delays at MTJ, with an on-time rate of only 88.4%.

How many routes operate from MTJ? ▼

Montrose/Delta, CO serves at least 6 routes. The busiest route is MTJ to DEN (Montrose/Delta - Denver) with 8,502 flights.

What is the cancellation rate at MTJ? ▼

Montrose/Delta, CO has a cancellation rate of 1.33%, based on 428 cancelled flights out of 32,233 total flights tracked.

Flight Guides

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Why Flights Get Cancelled

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Data Source: Bureau of Transportation Statistics (BTS), On-Time Performance Data (2020–2025). Statistics reflect cumulative performance across all available reporting periods. On-time rates exclude cancelled and diverted flights.

Read our methodology - how this data is sourced, computed, and verified.

Using MTJ's data

An airport-level on-time rate is a starting point, not a guarantee for your specific flight.

Check the busiest route from MTJ before you book a connection. See top routes
Travel in April rather than June if your dates are flexible. Seasonal patterns
Scores vary by airline and route within the same airport; check the specific carrier you're flying. Browse airlines

On-time rate reflects the BTS historical average across all reporting carriers at this airport, not any single flight or airline.

All airports → | Rankings →

Data sourced from U.S. Department of Transportation Bureau of Transportation Statistics (BTS) On-Time Performance data. See our methodology for details. Retrieved and formatted by PlainFlights Editorial

Source: U.S. Bureau of Transportation Statistics (BTS) Airline on-time performance and operational reliability · 2025 Accessed 2026-07-23

Every figure on PlainFlights is rendered directly from BTS On-Time Performance data, no number is typed in by an editor. Airport figures are computed directly from BTS On-Time Performance data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.