Route
IAH → DEN
George Bush Intercontinental Airport Denver International Airport
How punctual is this route?
- On-time arrivals
- 83.0%
- Less than 15 minutes late
- Cancelled
- 0.4%
- Of scheduled flights
- Average delay when late
- 74 min
- Flights arriving 15+ minutes late
- Flights tracked
- 4,728
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 42%
- Air traffic control & airport 27%
- Airline (crew, maintenance, cleaning) 26%
- Extreme weather 5%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 81.9% | 383 |
| October 2025 | 83.0% | 396 |
| November 2025 | 82.9% | 357 |
| December 2025 | 84.4% | 390 |
| January 2026 | 87.2% | 385 |
| February 2026 | 86.5% | 347 |
| March 2026 | 82.5% | 406 |
| April 2026 | 87.8% | 361 |
| May 2026 | 83.0% | 412 |
| June 2026 | 71.7% | 431 |
| July 2026 | 81.6% | 444 |
| August 2026 | 85.1% | 416 |
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 | 3,894 | 83.6% | 0.2% | 72 min |
| Frontier Airlines | 834 | 80.2% | 1.2% | 80 min |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
-
UA1654
33% late · 365 flights
-
F93229
12% late · 356 flights
-
UA2433
7% late · 208 flights
-
UA1066
11% late · 196 flights
-
F93227
32% late · 188 flights
-
UA2168
12% late · 180 flights
-
UA2339
23% late · 180 flights
-
UA1409
18% late · 159 flights
-
UA2013
10% late · 148 flights
-
F92995
23% late · 136 flights
-
UA1970
7% late · 135 flights
-
UA2643
4% late · 135 flights
-
UA1246
23% late · 133 flights
-
UA470
38% late · 133 flights
-
UA2338
21% late · 126 flights
-
UA1874
4% late · 121 flights
-
UA1450
14% late · 111 flights
-
UA1575
20% late · 103 flights
-
F93205
22% late · 86 flights
-
UA241
19% late · 85 flights
-
UA2436
1% late · 74 flights
-
F94855
15% late · 68 flights
-
UA2767
28% late · 68 flights
-
UA1338
19% late · 67 flights
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