Route
MEM → DEN
Frederick W. Smith International Airport Denver International Airport
How punctual is this route?
- On-time arrivals
- 77.7%
- Less than 15 minutes late
- Cancelled
- 0.8%
- Of scheduled flights
- Average delay when late
- 75 min
- Flights arriving 15+ minutes late
- Flights tracked
- 1,395
- Scheduled flights in the period
What caused the delays
- Air traffic control & airport 40%
- Airline (crew, maintenance, cleaning) 28%
- Late-arriving aircraft 26%
- Extreme weather 6%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 77.5% | 102 |
| October 2025 | 79.0% | 105 |
| November 2025 | 94.1% | 102 |
| December 2025 | 77.1% | 106 |
| January 2026 | 87.6% | 105 |
| February 2026 | 87.5% | 97 |
| March 2026 | 76.0% | 129 |
| April 2026 | 84.0% | 125 |
| May 2026 | 80.5% | 129 |
| June 2026 | 63.3% | 128 |
| July 2026 | 72.7% | 133 |
| August 2026 | 62.1% | 134 |
Source: U.S. DOT Bureau of Transportation Statistics on-time data, September 2025 – August 2026. Covers flights operated by reporting U.S. carriers. About our data
Airlines on this route
| Airline | Flights | On time | Cancelled | Avg. delay when late |
|---|---|---|---|---|
| United Airlines | 727 | 81.6% | 1.0% | 85 min |
| Southwest Airlines | 522 | 72.8% | 0.6% | 62 min |
| Frontier Airlines | 145 | 75.5% | 0.7% | 94 min |
| SkyWest Airlines | 1 | 100.0% | 0.0% | — |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
-
UA472
12% late · 217 flights
-
F94625
24% late · 138 flights
-
UA498
30% late · 102 flights
-
UA778
14% late · 82 flights
-
WN2585
47% late · 57 flights
-
UA1906
31% late · 55 flights
-
UA1007
19% late · 52 flights
-
WN4024
71% late · 52 flights
-
WN579
18% late · 51 flights
-
WN3406
4% late · 49 flights
-
WN4671
7% late · 42 flights
-
UA1252
3% late · 35 flights
-
WN2797
18% late · 33 flights
-
UA1712
16% late · 32 flights
-
UA2167
13% late · 31 flights
-
UA497
17% late · 24 flights
-
WN1792
17% late · 24 flights
-
WN4714
33% late · 24 flights
-
UA1714
19% late · 21 flights
-
UA2028
70% late · 21 flights
-
UA2307
5% late · 20 flights
-
WN2596
35% late · 20 flights
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