Route on-time record
DEN to MEM: most on-time flights and the best time to fly
Denver (Denver International Airport) to Memphis (Memphis International Airport). 1,304 nonstop flights in Jun 2025 to May 2026, 75% arrived within 15 minutes and 1.0% were cancelled. The most reliable flight number was United 791 at 11:02 AM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
DEN → MEM
Denver to Memphis: 1,304 nonstop flights a year
On time (12 months)
75%
Cancelled
1.0%
avg delay 17 min
Best time to leave
Noon to 3 PM
87% on time vs 35% after 9 PM
Most reliable airline
Frontier
79% chance on time
Lowest nonstop fare seen in the next two months: $311 (United 2789 on 2026-10-27). 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 791
11:02 AM → 2:24 PM2h 22m nonstop
Local times, typical schedule. Last flown 2026-05-19.
89%
chance on time
- On time (history)
- 92%
- Cancelled
- 2.0%
- Avg arrival delay
- 4 min
- Arrived on time 92% of the time (96 flights, Jun 2025 to May 2026).
- Departs outside DEN's trouble window (2 PM to 8 PM, when 79% of its 174 ground stops and delay programs started).
Moderate track record · 96 flights
Find United 791 fares Opens this date on Aviasales#2 · United 756
11:08 AM → 2:29 PM2h 21m nonstop
Local times, typical schedule. Last flown 2026-05-31.
84%
chance on time
- On time (history)
- 73%
- Cancelled
- 0.0%
- Avg arrival delay
- 17 min
- Arrived on time 73% of the time (11 flights, Jun 2025 to May 2026).
- Departs outside DEN's trouble window (2 PM to 8 PM, when 79% of its 174 ground stops and delay programs started).
- 72% of its delay minutes came from the plane arriving late from an earlier flight.
- Short track record (11 flights), so its score leans on the airline's record at this hour.
Limited track record · 11 flights
Find United 756 fares Opens this date on Aviasales#3 · Frontier 4626
3:46 PM → 7:09 PM2h 22m nonstop
Local times, typical schedule. Last flown 2026-05-29.
81%
chance on time
- On time (history)
- 82%
- Cancelled
- 0.7%
- Avg arrival delay
- 11 min
- Arrived on time 82% of the time (135 flights, Jun 2025 to May 2026).
- Departs inside DEN's trouble window: 79% of its 174 ground stops and delay programs started between 2 PM and 8 PM.
- 57% of its delay minutes came from the plane arriving late from an earlier flight.
Moderate track record · 135 flights
Find Frontier 4626 fares Opens this date on Aviasales#4 · Southwest 1192
11:05 AM → 2:15 PM2h 10m nonstop
Local times, typical schedule. Last flown 2026-04-06.
75%
chance on time
- On time (history)
- 71%
- Cancelled
- 0.0%
- Avg arrival delay
- 17 min
- Arrived on time 71% of the time (28 flights, Jun 2025 to May 2026).
- Departs outside DEN's trouble window (2 PM to 8 PM, when 79% of its 174 ground stops and delay programs started).
- 54% of its delay minutes came from the plane arriving late from an earlier flight.
- Short track record (28 flights), so its score leans on the airline's record at this hour.
Limited track record · 28 flights
Find Southwest 1192 fares Opens this date on Aviasales#5 · United 2130
5:25 PM → 8:49 PM2h 21m nonstop
Local times, typical schedule. Last flown 2026-05-31.
74%
chance on time
- On time (history)
- 74%
- Cancelled
- 0.7%
- Avg arrival delay
- 19 min
- Arrived on time 74% of the time (300 flights, Jun 2025 to May 2026).
- Departs inside DEN's trouble window: 79% of its 174 ground stops and delay programs started between 2 PM and 8 PM.
- 57% of its delay minutes came from the plane arriving late from an earlier flight.
Strong track record · 300 flights
Find United 2130 fares Opens this date on Aviasales#6 · Southwest 2321
10:35 AM → 1:50 PM2h 15m nonstop
Local times, typical schedule. Last flown 2026-05-29.
70%
chance on time
- On time (history)
- 74%
- Cancelled
- 0.0%
- Avg arrival delay
- 13 min
- Arrived on time 74% of the time (39 flights, Jun 2025 to May 2026).
- Never cancelled in 39 scheduled flights.
- Departs outside DEN's trouble window (2 PM to 8 PM, when 79% of its 174 ground stops and delay programs started).
- Short track record (39 flights), so its score leans on the airline's record at this hour.
Limited track record · 39 flights
Find Southwest 2321 fares Opens this date on Aviasales#7 · Southwest 3338
7:15 PM → 10:25 PM2h 10m nonstop
Local times, typical schedule. Last flown 2026-04-06.
52%
chance on time
- On time (history)
- 54%
- Cancelled
- 0.0%
- Avg arrival delay
- 35 min
- Arrived on time 54% of the time (28 flights, Jun 2025 to May 2026).
- Departs inside DEN's trouble window: 79% of its 174 ground stops and delay programs started between 2 PM and 8 PM.
- 68% of its delay minutes came from the plane arriving late from an earlier flight.
- Short track record (28 flights), so its score leans on the airline's record at this hour.
Limited track record · 28 flights
Find Southwest 3338 fares Opens this date on Aviasales#8 · Southwest 1946
7:00 PM → 10:15 PM2h 15m nonstop
Local times, typical schedule. Last flown 2026-05-31.
48%
chance on time
- On time (history)
- 49%
- Cancelled
- 0.0%
- Avg arrival delay
- 27 min
- Arrived on time 49% of the time (55 flights, Jun 2025 to May 2026).
- Never cancelled in 55 scheduled flights.
- Departs inside DEN's trouble window: 79% of its 174 ground stops and delay programs started between 2 PM and 8 PM.
- 59% of its delay minutes came from the plane arriving late from an earlier flight.
Limited track record · 55 flights
Find Southwest 1946 fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- Frontier Airlines79%
136 flights · 82% on time as flown · 0.9% cancel
- United Airlines79%
728 flights · 80% on time as flown · 1.0% cancel
- Southwest Airlines65%
439 flights · 65% on time as flown · 1.1% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- 9 AM to noon85%
477 flights · avg delay 9 min
- Noon to 3 PM87%
136 flights · avg delay 6 min
- 3 to 6 PM76%
368 flights · avg delay 18 min
- 6 to 9 PM58%
282 flights · avg delay 29 min
- After 9 PM35%
40 flights · avg delay 54 min
Best day: Tuesday (78%). Worst: Friday (71%).
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 aircraft62%
- Airline (crew, maintenance, boarding)27%
- Air traffic control and airport volume11%
- Severe weather1%
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
DEN to MEM questions
- What time of day is best to fly DEN to MEM?
- Noon to 3 PM: 87% of flights arrived on time, against 35% for departures after 9 PM.
- Which airline is most on time from DEN to MEM?
- Frontier, with a season-adjusted 79% chance of operating and arriving on time over 136 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 DEN to MEM?
- June (57% on time); the best was October (85%), 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 DEN
- MEM to DEN (return)
- DEN to PHX 75%
- DEN to SLC 77%
- DEN to LAX 79%
- DEN to LAS 75%
- DEN to SEA 73%
- DEN to ORD 70%
- DEN to DFW 75%
- DEN to SAN 76%
- DEN to MSP 78%
- DEN to ATL 80%
- DEN to SFO 68%
- DEN to AUS 76%
Live status: FAA delays and ground stops