Route
EWR → STL
Newark Liberty International Airport St. Louis Lambert International Airport
How punctual is this route?
- On-time arrivals
- 82.8%
- Less than 15 minutes late
- Cancelled
- 5.4%
- Of scheduled flights
- Average delay when late
- 72 min
- Flights arriving 15+ minutes late
- Flights tracked
- 1,074
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 39%
- Airline (crew, maintenance, cleaning) 28%
- Air traffic control & airport 24%
- Extreme weather 9%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 87.4% | 106 |
| October 2025 | 80.2% | 93 |
| November 2025 | 88.5% | 85 |
| December 2025 | 69.0% | 76 |
| January 2026 | 85.9% | 88 |
| February 2026 | 88.2% | 83 |
| March 2026 | 85.1% | 89 |
| April 2026 | 96.5% | 86 |
| May 2026 | 92.2% | 93 |
| June 2026 | 76.4% | 90 |
| July 2026 | 68.8% | 92 |
| August 2026 | 73.3% | 93 |
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 |
|---|---|---|---|---|
| Republic Airways | 866 | 86.8% | 5.5% | 70 min |
| United Airlines | 208 | 66.7% | 4.8% | 76 min |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
-
YX3630
9% late · 287 flights
-
YX3719
10% late · 204 flights
-
YX3468
15% late · 163 flights
-
UA1527
49% late · 81 flights
-
YX3556
28% late · 46 flights
-
UA2625
16% late · 31 flights
-
YX3694
23% late · 31 flights
-
YX3574
4% late · 28 flights
-
UA657
15% late · 26 flights
-
YX3538
18% late · 24 flights
-
YX3638
38% late · 24 flights
-
UA1637
25% late · 21 flights
-
YX3717
15% late · 21 flights
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