Route
IAH → PHL
George Bush Intercontinental Airport Philadelphia International Airport
How punctual is this route?
- On-time arrivals
- 78.8%
- Less than 15 minutes late
- Cancelled
- 1.9%
- Of scheduled flights
- Average delay when late
- 94 min
- Flights arriving 15+ minutes late
- Flights tracked
- 1,878
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 41%
- Airline (crew, maintenance, cleaning) 34%
- Air traffic control & airport 22%
- Extreme weather 4%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 87.5% | 137 |
| October 2025 | 77.6% | 161 |
| November 2025 | 83.1% | 150 |
| December 2025 | 85.7% | 157 |
| January 2026 | 86.7% | 145 |
| February 2026 | 91.0% | 127 |
| March 2026 | 78.5% | 147 |
| April 2026 | 87.3% | 159 |
| May 2026 | 80.8% | 167 |
| June 2026 | 65.8% | 187 |
| July 2026 | 54.6% | 168 |
| August 2026 | 75.1% | 173 |
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 | 954 | 81.5% | 0.9% | 74 min |
| American Airlines | 724 | 77.6% | 3.2% | 101 min |
| OH | 92 | 70.8% | 2.2% | 166 min |
| Frontier Airlines | 72 | 71.8% | 1.4% | 88 min |
| Republic Airways | 36 | 63.9% | 0.0% | 147 min |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
-
UA1663
25% late · 285 flights
-
UA2196
13% late · 150 flights
-
UA2017
7% late · 143 flights
-
AA1520
13% late · 101 flights
-
AA678
14% late · 82 flights
-
UA2748
43% late · 78 flights
-
AA2561
27% late · 75 flights
-
AA1925
32% late · 70 flights
-
AA1927
49% late · 70 flights
-
UA2203
3% late · 70 flights
-
AA2427
18% late · 51 flights
-
F92154
26% late · 51 flights
-
UA2642
9% late · 47 flights
-
AA2153
20% late · 44 flights
-
AA698
14% late · 44 flights
-
UA2631
14% late · 35 flights
-
AA2692
12% late · 32 flights
-
UA744
11% late · 28 flights
-
AA3196
12% late · 27 flights
-
AA976
12% late · 27 flights
-
OH5266
38% late · 26 flights
-
OH5050
20% late · 25 flights
-
UA1005
12% late · 25 flights
-
UA1763
57% late · 24 flights
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