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Route Reliability

Newark → St. Louis

EWR–STL · 872 miles · Newark Liberty International Airport to St. Louis Lambert International Airport

71
Usually Fine
WanderNerd Reliability Score
85%
Arrive within 15 minutes
3 min early
Average arrival delay
5.2%
Cancelled
1,059
Flights in the data

Data through May 2026.

United Airlines is the only airline in this data on this route, arriving on time 85% of the time across 1,059 flights. No comparison to make.

What the data says

Morning flights do better here.

EWR–STL flights departing between 6–9 AM arrived on time 90% of the time, versus 60% between 6–9 PM.

Saturday is the weak spot.

EWR–STL flights arrived on time 88% of the time on Tuesdays. On Saturdays: 78%.

Keep a backup plan handy.

This route was cancelled 5.2% of the time. Typical for U.S. flights is around 1–2%.

Trending in the right direction.

EWR–STL flights arrived on time 92% of the time over the last three months in the data, compared with 82% 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

On-time by weekday
  • Mon87%(140 flights)
  • Tue88%(149 flights)
  • Wed84%(149 flights)
  • Thu82%(143 flights)
  • Fri88%(149 flights)
  • Sat78%(129 flights)
  • Sun85%(143 flights)
On-time by departure window
  • 6–9 AM90%(131 flights)
  • 9 AM–12 PM90%(219 flights)
  • 12–3 PM87%(188 flights)
  • 3–6 PM87%(131 flights)
  • 6–9 PM60%(25 flights)
  • 9 PM–12 AM78%(308 flights)
On-time trend by month
92%
May

Jun 67% → May 92% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202567%73
July 202583%78
August 202582%92
September 202588%103
October 202581%91
November 202589%78
December 202572%71
January 202686%78
February 202688%76
March 202686%87
April 202698%85
May 202692%90

Same trip, other airports

Keep nerding

Based on 1,059 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.