Route on-time record
MTJ to DEN: most on-time flights and the best time to fly
Montrose (Montrose Regional Airport) to Denver (Denver International Airport). 1,414 nonstop flights in Jun 2025 to May 2026, 77% arrived within 15 minutes and 0.6% were cancelled. The most reliable flight number was Southwest 3520 at 8:10 AM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
MTJ → DEN
Montrose to Denver: 1,414 nonstop flights a year
On time (12 months)
77%
Cancelled
0.6%
avg delay 21 min
Best time to leave
9 AM to noon
86% on time vs 62% 3 to 6 PM
Most reliable airline
SkyWest
78% chance on time
Lowest nonstop fare seen in the next two months: $231 (United 352 on 2026-10-21). Fares open on our travel partner (Aviasales). Pick the flight number you chose here.
Most reliable nonstop flights
Ranked by the chance the flight operates and arrives within 15 minutes of schedule, from Jun 2025 to May 2026 records.
#1 · Southwest 3520
8:10 AM → 9:10 AM1h 00m nonstop
Local times, typical schedule. Last flown 2026-05-31.
85%
chance on time
- On time (history)
- 91%
- Cancelled
- 0.0%
- Avg arrival delay
- 4 min
- Arrived on time 91% of the time (55 flights, Jun 2025 to May 2026).
- Never cancelled in 55 scheduled flights.
- Short track record (55 flights), so its score leans on the airline's record at this hour.
Limited track record · 55 flights
Find Southwest 3520 fares Opens this date on Aviasales#2 · United 1003
7:15 AM → 8:30 AM1h 15m nonstop
Local times, typical schedule. Last flown 2026-05-31.
83%
chance on time
- On time (history)
- 87%
- Cancelled
- 0.8%
- Avg arrival delay
- 13 min
- Arrived on time 87% of the time (124 flights, Jun 2025 to May 2026).
Moderate track record · 124 flights
Find United 1003 fares Opens this date on Aviasales#3 · Southwest 1873
12:10 PM → 1:15 PM1h 05m nonstop
Local times, typical schedule. Last flown 2026-04-06.
82%
chance on time
- On time (history)
- 85%
- Cancelled
- 0.0%
- Avg arrival delay
- 13 min
- Arrived on time 85% of the time (33 flights, Jun 2025 to May 2026).
- Never cancelled in 33 scheduled flights.
- 78% of its delay minutes came from the plane arriving late from an earlier flight.
- Short track record (33 flights), so its score leans on the airline's record at this hour.
Limited track record · 33 flights
Find Southwest 1873 fares Opens this date on Aviasales#4 · Southwest 2254
8:20 AM → 9:30 AM1h 10m nonstop
Local times, typical schedule. Last flown 2026-04-06.
81%
chance on time
- On time (history)
- 84%
- Cancelled
- 3.1%
- Avg arrival delay
- 31 min
- Arrived on time 84% of the time (31 flights, Jun 2025 to May 2026).
- Cancelled 3.1% of the time (1 of 32).
- Short track record (31 flights), so its score leans on the airline's record at this hour.
Limited track record · 31 flights
Find Southwest 2254 fares Opens this date on Aviasales#5 · United 352
1:40 PM → 2:55 PM1h 13m nonstop
Local times, typical schedule. Last flown 2026-05-31.
79%
chance on time
- On time (history)
- 84%
- Cancelled
- 1.4%
- Avg arrival delay
- 14 min
- Arrived on time 84% of the time (213 flights, Jun 2025 to May 2026).
- Lands inside DEN's trouble window: 79% of its 174 ground stops and delay programs started between 2 PM and 8 PM.
- 66% of its delay minutes came from the plane arriving late from an earlier flight.
Strong track record · 213 flights
Find United 352 fares Opens this date on Aviasales#6 · United 591
3:37 PM → 4:52 PM1h 15m nonstop
Local times, typical schedule. Last flown 2026-04-05. Same departure also flew as United 1412; its record covers all of them.
69%
chance on time
- On time (history)
- 74%
- Cancelled
- 0.0%
- Avg arrival delay
- 26 min
- Arrived on time 74% of the time (90 flights, Jun 2025 to May 2026).
- Never cancelled in 90 scheduled flights.
- Leaves in this route's least on-time window (3 to 6 PM: 62% on time; 9 AM to noon: 86%).
- Lands inside DEN's trouble window: 79% of its 174 ground stops and delay programs started between 2 PM and 8 PM.
Moderate track record · 90 flights
Find United 591 fares Opens this date on Aviasales#7 · SkyWest 5673 · sold as United Express, Delta Connection, American Eagle or Alaska
3:25 PM → 4:45 PM1h 20m nonstop
Local times, typical schedule. Last flown 2026-05-31.
66%
chance on time
- On time (history)
- 73%
- Cancelled
- 0.0%
- Avg arrival delay
- 16 min
- Arrived on time 73% of the time (11 flights, Jun 2025 to May 2026).
- Leaves in this route's least on-time window (3 to 6 PM: 62% on time; 9 AM to noon: 86%).
- Lands inside DEN's trouble window: 79% of its 174 ground stops and delay programs started between 2 PM and 8 PM.
- Short track record (11 flights), so its score leans on the airline's record at this hour.
Limited track record · 11 flights
Find 3:25 PM flight fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- SkyWest Airlines (sold as United Express, Delta Connection, American Eagle or Alaska)78%
110 flights · 75% on time as flown · 0.8% cancel
- Southwest Airlines78%
418 flights · 79% on time as flown · 0.3% cancel
- United Airlines76%
886 flights · 77% on time as flown · 0.8% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM85%
451 flights · avg delay 16 min
- 9 AM to noon86%
70 flights · avg delay 7 min
- Noon to 3 PM79%
560 flights · avg delay 18 min
- 3 to 6 PM62%
333 flights · avg delay 35 min
Best day: Tuesday (82%). Worst: Friday (74%).
On time by month
All airlines, Jun 2023 to May 2026. Several years per month, so one stormy season doesn't define a month. Travel-month estimates use this seasonal pattern.
What delays this route
- Late-arriving aircraft42%
- Air traffic control and airport volume37%
- Airline (crew, maintenance, boarding)19%
Share of delay minutes by the cause airlines report to the US DOT.
Historical odds, not a guarantee. Built from the US DOT Bureau of Transportation Statistics on-time reports (Jun 2025 to May 2026), FAA ground stop and delay program advisories, and 20 years of airport weather observations. Covers US airlines that report to the DOT; schedules are flights operated recently, so confirm times when you book. ATIS Alerts is not affiliated with any airline. Fares are what Aviasales travelers saw in recent searches (USD, one way, 1 adult), not live quotes; the partner site shows the current price. Fare links go to our travel partner and may earn us a commission at no cost to you. Affiliate disclosure
MTJ to DEN questions
- What time of day is best to fly MTJ to DEN?
- 9 AM to noon: 86% of flights arrived on time, against 62% for departures 3 to 6 PM.
- Which airline is most on time from MTJ to DEN?
- SkyWest, with a season-adjusted 78% chance of operating and arriving on time over 110 flights. The adjustment compares each airline with what the route did in the months it flew, so a carrier that skipped a stormy month gets no free credit.
- What is the worst month for delays on MTJ to DEN?
- June (65% on time); the best was November (88%), averaged over Jun 2023 to May 2026.
- Is this a prediction for my flight?
- No. These are historical odds from the US DOT on-time reports, FAA advisories and airport weather records. Check your flight status and the FAA delay board on the day you fly.
More routes from MTJ
Live status: FAA delays and ground stops