Route
PHL → DEN
Philadelphia International Airport Denver International Airport
How punctual is this route?
- On-time arrivals
- 73.3%
- Less than 15 minutes late
- Cancelled
- 1.5%
- Of scheduled flights
- Average delay when late
- 77 min
- Flights arriving 15+ minutes late
- Flights tracked
- 3,060
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 36%
- Airline (crew, maintenance, cleaning) 33%
- Air traffic control & airport 25%
- Extreme weather 6%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 84.0% | 283 |
| October 2025 | 80.6% | 248 |
| November 2025 | 85.7% | 239 |
| December 2025 | 55.6% | 236 |
| January 2026 | 72.9% | 177 |
| February 2026 | 80.8% | 173 |
| March 2026 | 75.7% | 206 |
| April 2026 | 80.8% | 225 |
| May 2026 | 76.4% | 276 |
| June 2026 | 64.7% | 316 |
| July 2026 | 66.2% | 345 |
| August 2026 | 63.9% | 336 |
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 | 953 | 81.9% | 0.7% | 87 min |
| American Airlines | 926 | 74.0% | 2.1% | 69 min |
| Southwest Airlines | 880 | 65.8% | 1.1% | 62 min |
| Frontier Airlines | 301 | 65.3% | 3.7% | 123 min |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
-
UA2383
12% late · 241 flights
-
F93339
37% late · 233 flights
-
AA3158
35% late · 209 flights
-
AA1313
24% late · 125 flights
-
AA1063
25% late · 108 flights
-
UA2644
51% late · 102 flights
-
UA1537
20% late · 93 flights
-
AA3312
15% late · 75 flights
-
UA1943
17% late · 71 flights
-
F92513
28% late · 68 flights
-
AA1759
24% late · 64 flights
-
WN3221
71% late · 60 flights
-
WN4035
30% late · 60 flights
-
AA2500
41% late · 58 flights
-
WN2557
12% late · 58 flights
-
WN472
46% late · 57 flights
-
UA1061
4% late · 55 flights
-
AA1534
15% late · 54 flights
-
WN3084
31% late · 53 flights
-
UA2307
22% late · 47 flights
-
UA2093
20% late · 45 flights
-
WN4036
48% late · 45 flights
-
AA3256
16% late · 44 flights
-
WN3220
38% late · 43 flights
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