Route on-time record

MCO to DEN: most on-time flights and the best time to fly

Orlando (Orlando International Airport) to Denver (Denver International Airport). 4,575 nonstop flights in Jun 2025 to May 2026, 79% arrived within 15 minutes and 0.6% were cancelled. The most reliable flight number was United 1686 at 6:00 AM.

Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.

MCO → DEN

Orlando to Denver: 4,575 nonstop flights a year

On time (12 months)

79%

Cancelled

0.6%

avg delay 15 min

Best time to leave

Before 9 AM

92% on time vs 63% 6 to 9 PM

Most reliable airline

United

84% chance on time

Check MCO to DEN fares

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 · United 1686
6:00 AM → 8:20 AM4h 20m nonstop
Local times, typical schedule. Last flown 2026-03-28.
93%
chance on time
On time (history)
94%
Cancelled
0.0%
Avg arrival delay
1 min
- Arrived on time 94% of the time (18 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 92% on time; 6 to 9 PM: 63%).
- Departs outside MCO's trouble window (1 PM to 7 PM, when 76% of its 89 ground stops and delay programs started).
- Short track record (18 flights), so its score leans on the airline's record at this hour.
Limited track record · 18 flights
Find United 1686 fares Opens this date on Aviasales
#2 · United 1714
8:00 AM → 10:02 AM4h 02m nonstop
Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as United 493, 1739, 1839; its record covers all of them.
90%
chance on time
On time (history)
92%
Cancelled
1.1%
Avg arrival delay
2 min
- Arrived on time 92% of the time (91 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 92% on time; 6 to 9 PM: 63%).
- Departs outside MCO's trouble window (1 PM to 7 PM, when 76% of its 89 ground stops and delay programs started).
Moderate track record · 91 flights
Find United 1714 fares Opens this date on Aviasales
#3 · United 1520
11:50 AM → 2:11 PM4h 21m nonstop
Local times, typical schedule. Last flown 2026-05-31.
90%
chance on time
On time (history)
90%
Cancelled
0.3%
Avg arrival delay
9 min
- Arrived on time 90% of the time (362 flights, Jun 2025 to May 2026).
- Departs outside MCO's trouble window (1 PM to 7 PM, when 76% of its 89 ground stops and delay programs started).
- Lands inside DEN's trouble window: 79% of its 174 ground stops and delay programs started between 2 PM and 8 PM.
Strong track record · 362 flights
Find United 1520 fares Opens this date on Aviasales
#4 · United 1022
9:42 AM → 12:00 PM4h 18m nonstop
Local times, typical schedule. Last flown 2026-05-31.
89%
chance on time
On time (history)
90%
Cancelled
1.7%
Avg arrival delay
13 min
- Arrived on time 90% of the time (284 flights, Jun 2025 to May 2026).
- Departs outside MCO's trouble window (1 PM to 7 PM, when 76% of its 89 ground stops and delay programs started).
- 55% of its delay minutes came from the plane arriving late from an earlier flight.
Strong track record · 284 flights
Find United 1022 fares Opens this date on Aviasales
#5 · Southwest 3114
6:25 AM → 8:35 AM4h 10m nonstop
Local times, typical schedule. Last flown 2026-05-29.
88%
chance on time
On time (history)
92%
Cancelled
0.0%
Avg arrival delay
3 min
- Arrived on time 92% of the time (38 flights, Jun 2025 to May 2026).
- Never cancelled in 38 scheduled flights.
- Leaves in this route's most on-time window (Before 9 AM: 92% on time; 6 to 9 PM: 63%).
- Departs outside MCO's trouble window (1 PM to 7 PM, when 76% of its 89 ground stops and delay programs started).
Limited track record · 38 flights
Find Southwest 3114 fares Opens this date on Aviasales
#6 · Frontier 1733
6:00 AM → 8:24 AM4h 21m nonstop
Local times, typical schedule. Last flown 2026-05-31.
88%
chance on time
On time (history)
88%
Cancelled
0.7%
Avg arrival delay
7 min
- Arrived on time 88% of the time (302 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 92% on time; 6 to 9 PM: 63%).
- Departs outside MCO's trouble window (1 PM to 7 PM, when 76% of its 89 ground stops and delay programs started).
Strong track record · 302 flights
Find Frontier 1733 fares Opens this date on Aviasales
#7 · Southwest 2512
6:05 AM → 8:25 AM4h 20m nonstop
Local times, typical schedule. Last flown 2026-04-06.
87%
chance on time
On time (history)
88%
Cancelled
0.0%
Avg arrival delay
6 min
- Arrived on time 88% of the time (33 flights, Jun 2025 to May 2026).
- Never cancelled in 33 scheduled flights.
- Leaves in this route's most on-time window (Before 9 AM: 92% on time; 6 to 9 PM: 63%).
- Departs outside MCO's trouble window (1 PM to 7 PM, when 76% of its 89 ground stops and delay programs started).
Limited track record · 33 flights
Find Southwest 2512 fares Opens this date on Aviasales
#8 · United 2845
3:41 PM → 6:09 PM4h 28m nonstop
Local times, typical schedule. Last flown 2026-05-31.
85%
chance on time
On time (history)
100%
Cancelled
0.0%
Avg arrival delay
1 min
- Arrived on time 100% of the time (10 flights, Jun 2025 to May 2026).
- Departs inside MCO's trouble window: 76% of its 89 ground stops and delay programs started between 1 PM and 7 PM.
- 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 (10 flights), so its score leans on the airline's record at this hour.
Limited track record · 10 flights
Find United 2845 fares Opens this date on Aviasales
#9 · Frontier 2519
12:08 PM → 2:41 PM4h 33m nonstop
Local times, typical schedule. Last flown 2026-04-14.
85%
chance on time
On time (history)
88%
Cancelled
2.9%
Avg arrival delay
9 min
- Arrived on time 88% of the time (33 flights, Jun 2025 to May 2026).
- Departs outside MCO's trouble window (1 PM to 7 PM, when 76% of its 89 ground stops and delay programs started).
- 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 (33 flights), so its score leans on the airline's record at this hour.
Limited track record · 33 flights
Find Frontier 2519 fares Opens this date on Aviasales
#10 · Southwest 739
7:05 AM → 9:25 AM4h 15m nonstop
Local times, typical schedule. Last flown 2026-04-05.
85%
chance on time
On time (history)
94%
Cancelled
0.0%
Avg arrival delay
3 min
- Arrived on time 94% of the time (18 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 92% on time; 6 to 9 PM: 63%).
- Departs outside MCO's trouble window (1 PM to 7 PM, when 76% of its 89 ground stops and delay programs started).
- Short track record (18 flights), so its score leans on the airline's record at this hour.
Limited track record · 18 flights
Find Southwest 739 fares Opens this date on Aviasales

Airlines on this route

Season-adjusted chance of operating and arriving on time.

United Airlines84%
1,777 flights · 85% on time as flown · 0.7% cancel
Frontier Airlines81%
813 flights · 82% on time as flown · 1.0% cancel
Southwest Airlines72%
1,985 flights · 72% on time as flown · 0.4% cancel

On time by departure time

All airlines, scheduled local departure, Jun 2025 to May 2026.

Before 9 AM92%
1,202 flights · avg delay 4 min
9 AM to noon87%
726 flights · avg delay 10 min
Noon to 3 PM80%
747 flights · avg delay 14 min
3 to 6 PM69%
1,042 flights · avg delay 23 min
6 to 9 PM63%
829 flights · avg delay 26 min

Best day: Wednesday (80%). Worst: Sunday (75%).

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 aircraft38%
Airline (crew, maintenance, boarding)27%
Air traffic control and airport volume27%
Severe weather8%

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

MCO to DEN questions

What time of day is best to fly MCO to DEN?: Before 9 AM: 92% of flights arrived on time, against 63% for departures 6 to 9 PM. Later flights inherit delays from earlier ones, so the first departures of the day usually run best.
Which airline is most on time from MCO to DEN?: United, with a season-adjusted 84% chance of operating and arriving on time over 1,777 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 MCO to DEN?: July (65% on time); the best was November (86%), 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.

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