Route on-time record
MSY to DEN: most on-time flights and the best time to fly
New Orleans (Louis Armstrong New Orleans International Airport) to Denver (Denver International Airport). 2,263 nonstop flights in Jun 2025 to May 2026, 80% arrived within 15 minutes and 0.4% were cancelled. The most reliable flight number was United 631 at 10:22 AM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
MSY → DEN
New Orleans to Denver: 2,263 nonstop flights a year
On time (12 months)
80%
Cancelled
0.4%
avg delay 13 min
Best time to leave
Before 9 AM
91% on time vs 66% 6 to 9 PM
Most reliable airline
United
86% chance on time
Lowest nonstop fare seen in the next two months: $229 (Frontier 4561 on 2026-10-23). 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 631
10:22 AM → 12:29 PM3h 07m nonstop
Local times, typical schedule. Last flown 2026-05-18.
93%
chance on time
- On time (history)
- 95%
- Cancelled
- 0.0%
- Avg arrival delay
- 4 min
- Arrived on time 95% of the time (65 flights, Jun 2025 to May 2026).
- Never cancelled in 65 scheduled flights.
Moderate track record · 65 flights
Find United 631 fares Opens this date on Aviasales#2 · Southwest 2573
5:40 AM → 7:35 AM2h 55m nonstop
Local times, typical schedule. Last flown 2026-05-31.
93%
chance on time
- On time (history)
- 98%
- Cancelled
- 0.0%
- Avg arrival delay
- 2 min
- Arrived on time 98% of the time (55 flights, Jun 2025 to May 2026).
- Never cancelled in 55 scheduled flights.
- Leaves in this route's most on-time window (Before 9 AM: 91% on time; 6 to 9 PM: 66%).
- Short track record (55 flights), so its score leans on the airline's record at this hour.
Limited track record · 55 flights
Find Southwest 2573 fares Opens this date on Aviasales#3 · United 2073
7:00 AM → 9:01 AM3h 01m nonstop
Local times, typical schedule. Last flown 2026-05-20. Same departure also flew as United 1964, 1633; its record covers all of them.
91%
chance on time
- On time (history)
- 91%
- Cancelled
- 0.0%
- Avg arrival delay
- 8 min
- Arrived on time 91% of the time (77 flights, Jun 2025 to May 2026).
- Never cancelled in 77 scheduled flights.
- Leaves in this route's most on-time window (Before 9 AM: 91% on time; 6 to 9 PM: 66%).
Moderate track record · 77 flights
Find United 2073 fares Opens this date on Aviasales#4 · United 1376
8:04 AM → 10:05 AM3h 01m nonstop
Local times, typical schedule. Last flown 2026-05-31.
89%
chance on time
- On time (history)
- 82%
- Cancelled
- 0.0%
- Avg arrival delay
- 7 min
- Arrived on time 82% of the time (11 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 91% on time; 6 to 9 PM: 66%).
- Short track record (11 flights), so its score leans on the airline's record at this hour.
Limited track record · 11 flights
Find United 1376 fares Opens this date on Aviasales#5 · Southwest 4549
10:00 AM → 11:55 AM2h 55m nonstop
Local times, typical schedule. Last flown 2026-05-31.
85%
chance on time
- On time (history)
- 87%
- Cancelled
- 0.0%
- Avg arrival delay
- 4 min
- Arrived on time 87% of the time (47 flights, Jun 2025 to May 2026).
- Never cancelled in 47 scheduled flights.
- Short track record (47 flights), so its score leans on the airline's record at this hour.
Limited track record · 47 flights
Find Southwest 4549 fares Opens this date on Aviasales#6 · United 2192
2:40 PM → 4:45 PM3h 05m nonstop
Local times, typical schedule. Last flown 2026-03-28.
85%
chance on time
- On time (history)
- 83%
- Cancelled
- 0.0%
- Avg arrival delay
- 15 min
- Arrived on time 83% of the time (24 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.
- Short track record (24 flights), so its score leans on the airline's record at this hour.
Limited track record · 24 flights
Find United 2192 fares Opens this date on Aviasales#7 · Southwest 179
5:50 AM → 7:45 AM2h 55m nonstop
Local times, typical schedule. Last flown 2026-04-06.
85%
chance on time
- On time (history)
- 85%
- Cancelled
- 0.0%
- Avg arrival delay
- 7 min
- Arrived on time 85% 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: 91% on time; 6 to 9 PM: 66%).
- Short track record (33 flights), so its score leans on the airline's record at this hour.
Limited track record · 33 flights
Find Southwest 179 fares Opens this date on Aviasales#8 · Southwest 1442
8:00 AM → 9:55 AM2h 55m nonstop
Local times, typical schedule. Last flown 2026-04-06.
84%
chance on time
- On time (history)
- 87%
- Cancelled
- 0.0%
- Avg arrival delay
- 7 min
- Arrived on time 87% of the time (15 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 91% on time; 6 to 9 PM: 66%).
- Short track record (15 flights), so its score leans on the airline's record at this hour.
Limited track record · 15 flights
Find Southwest 1442 fares Opens this date on Aviasales#9 · United 2216
6:08 PM → 8:17 PM3h 09m nonstop
Local times, typical schedule. Last flown 2026-05-18.
81%
chance on time
- On time (history)
- 83%
- Cancelled
- 1.1%
- Avg arrival delay
- 11 min
- Arrived on time 83% of the time (90 flights, Jun 2025 to May 2026).
- Leaves in this route's least on-time window (6 to 9 PM: 66% on time; Before 9 AM: 91%).
- 58% of its delay minutes came from the plane arriving late from an earlier flight.
Moderate track record · 90 flights
Find United 2216 fares Opens this date on Aviasales#10 · United 2325
2:23 PM → 4:30 PM3h 07m nonstop
Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as United 2134; its record covers all of them.
80%
chance on time
- On time (history)
- 76%
- Cancelled
- 0.0%
- Avg arrival delay
- 18 min
- Arrived on time 76% of the time (152 flights, Jun 2025 to May 2026).
- Never cancelled in 153 scheduled flights.
- 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 · 152 flights
Find United 2325 fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- United Airlines86%
1,016 flights · 86% on time as flown · 0.3% cancel
- Southwest Airlines75%
1,059 flights · 75% on time as flown · 0.3% cancel
- Frontier Airlines72%
188 flights · 71% on time as flown · 1.1% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM91%
760 flights · avg delay 5 min
- 9 AM to noon88%
305 flights · avg delay 8 min
- Noon to 3 PM77%
386 flights · avg delay 14 min
- 3 to 6 PM68%
353 flights · avg delay 25 min
- 6 to 9 PM66%
444 flights · avg delay 19 min
Best day: Wednesday (84%). Worst: Thursday (78%).
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 aircraft36%
- Air traffic control and airport volume34%
- Airline (crew, maintenance, boarding)23%
- Severe weather7%
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
MSY to DEN questions
- What time of day is best to fly MSY to DEN?
- Before 9 AM: 91% of flights arrived on time, against 66% 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 MSY to DEN?
- United, with a season-adjusted 86% chance of operating and arriving on time over 1,016 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 MSY to DEN?
- June (67% on time); the best was November (90%), 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 MSY
- DEN to MSY (return)
- MSY to ATL 82%
- MSY to IAH 82%
- MSY to DFW 72%
- MSY to ORD 79%
- MSY to MCO 77%
- MSY to DAL 78%
- MSY to HOU 76%
- MSY to AUS 78%
- MSY to DCA 71%
- MSY to CLT 83%
- MSY to MIA 79%
- MSY to LAX 80%
Live status: FAA delays and ground stops