Route
STL → EWR
St. Louis Lambert International Airport Newark Liberty International Airport
How punctual is this route?
- On-time arrivals
- 81.4%
- Less than 15 minutes late
- Cancelled
- 5.5%
- Of scheduled flights
- Average delay when late
- 95 min
- Flights arriving 15+ minutes late
- Flights tracked
- 1,075
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 42%
- Air traffic control & airport 40%
- Airline (crew, maintenance, cleaning) 15%
- Extreme weather 3%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 84.5% | 106 |
| October 2025 | 60.4% | 93 |
| November 2025 | 74.7% | 85 |
| December 2025 | 73.3% | 77 |
| January 2026 | 88.6% | 88 |
| February 2026 | 88.2% | 83 |
| March 2026 | 85.2% | 89 |
| April 2026 | 91.8% | 86 |
| May 2026 | 93.3% | 93 |
| June 2026 | 81.4% | 90 |
| July 2026 | 73.1% | 92 |
| August 2026 | 81.2% | 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 | 868 | 83.3% | 6.0% | 96 min |
| United Airlines | 207 | 73.7% | 3.4% | 91 min |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
-
YX3573
14% late · 217 flights
-
YX3502
14% late · 62 flights
-
YX3518
5% late · 55 flights
-
YX3621
8% late · 53 flights
-
YX3424
33% late · 52 flights
-
UA648
8% late · 47 flights
-
YX3564
42% late · 46 flights
-
UA1706
51% late · 45 flights
-
YX3425
13% late · 40 flights
-
YX3516
12% late · 37 flights
-
YX3548
18% late · 36 flights
-
YX3477
21% late · 35 flights
-
UA2104
9% late · 34 flights
-
YX3432
13% late · 31 flights
-
YX3674
26% late · 31 flights
-
YX3606
14% late · 28 flights
-
UA2301
65% late · 26 flights
-
YX3489
13% late · 24 flights
-
YX3593
41% late · 24 flights
-
UA577
5% late · 21 flights
-
YX3576
0% late · 21 flights
-
YX3710
16% late · 21 flights
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