Route Reliability
St. Louis → Newark
STL–EWR · 872 miles · St. Louis Lambert International Airport to Newark Liberty International Airport
- 82%
- Arrive within 15 minutes
- 6 min
- Average arrival delay
- 4.8%
- Cancelled
- 1,061
- Flights in the data
Data through May 2026.
United Airlines is the only airline in this data on this route, arriving on time 82% of the time across 1,061 flights. No comparison to make.
What the data says
Morning flights do better here.
STL–EWR flights departing between 6–9 AM arrived on time 91% of the time, versus 59% between 6–9 PM.
Wednesday comes out ahead.
A small edge: 84% on time on Wednesdays against 78% on Sundays.
Keep a backup plan handy.
This route was cancelled 4.8% of the time. Typical for U.S. flights is around 1–2%.
Ticking up lately.
STL–EWR flights arrived on time 90% of the time over the last three months in the data, compared with 84% in the three months before that.
Best historical flights
Ranked by on-time arrivals, minimum 100 flights. Past performance, not a promise.
Top flights by on-time rate
More flights on this route
The breakdown
- Mon82%(142 flights)
- Tue82%(147 flights)
- Wed84%(151 flights)
- Thu81%(145 flights)
- Fri84%(149 flights)
- Sat82%(130 flights)
- Sun78%(144 flights)
- 6–9 AM91%(368 flights)
- 9 AM–12 PM82%(311 flights)
- 12–3 PM80%(35 flights)
- 3–6 PM71%(277 flights)
- 6–9 PM59%(17 flights)
Jun 82% → May 94% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 82% | 71 |
| July 2025 | 76% | 80 |
| August 2025 | 79% | 91 |
| September 2025 | 85% | 103 |
| October 2025 | 60% | 91 |
| November 2025 | 75% | 79 |
| December 2025 | 73% | 75 |
| January 2026 | 90% | 79 |
| February 2026 | 90% | 76 |
| March 2026 | 85% | 88 |
| April 2026 | 92% | 85 |
| May 2026 | 94% | 90 |
Same trip, other airports
Keep nerding
Based on 1,061 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.