Route
PHL → STL
Philadelphia International Airport St. Louis Lambert International Airport
How punctual is this route?
- On-time arrivals
- 77.7%
- Less than 15 minutes late
- Cancelled
- 2.1%
- Of scheduled flights
- Average delay when late
- 80 min
- Flights arriving 15+ minutes late
- Flights tracked
- 1,610
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 45%
- Airline (crew, maintenance, cleaning) 29%
- Air traffic control & airport 19%
- Extreme weather 7%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 78.8% | 132 |
| October 2025 | 81.6% | 147 |
| November 2025 | 80.1% | 163 |
| December 2025 | 64.2% | 150 |
| January 2026 | 81.4% | 102 |
| February 2026 | 90.9% | 84 |
| March 2026 | 76.1% | 116 |
| April 2026 | 85.9% | 129 |
| May 2026 | 80.6% | 144 |
| June 2026 | 78.1% | 147 |
| July 2026 | 71.3% | 150 |
| August 2026 | 70.8% | 146 |
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 |
|---|---|---|---|---|
| Southwest Airlines | 726 | 77.7% | 0.8% | 77 min |
| American Airlines | 627 | 77.1% | 2.2% | 84 min |
| OH | 162 | 75.0% | 8.0% | 76 min |
| Republic Airways | 95 | 85.1% | 1.1% | 76 min |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
-
AA1368
24% late · 154 flights
-
AA2714
32% late · 75 flights
-
AA2720
8% late · 64 flights
-
WN4039
43% late · 60 flights
-
WN1499
20% late · 59 flights
-
AA2571
25% late · 56 flights
-
AA3162
17% late · 54 flights
-
WN3227
4% late · 52 flights
-
AA3049
35% late · 49 flights
-
WN668
31% late · 49 flights
-
WN1397
11% late · 47 flights
-
WN2679
49% late · 43 flights
-
WN4952
10% late · 39 flights
-
AA3130
11% late · 38 flights
-
OH5224
25% late · 37 flights
-
YX4756
11% late · 37 flights
-
AA2275
11% late · 35 flights
-
WN2258
26% late · 35 flights
-
OH5623
30% late · 33 flights
-
WN1297
9% late · 33 flights
-
WN1738
3% late · 31 flights
-
YX4796
24% late · 29 flights
-
WN4174
32% late · 28 flights
-
AA798
36% late · 27 flights
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