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Route Reliability

St. Louis → New York

STL–JFK · 892 miles · St. Louis Lambert International Airport to John F. Kennedy International Airport

50
A Little Dicey
WanderNerd Reliability Score
65%
Arrive within 15 minutes
29 min
Average arrival delay
3.5%
Cancelled
143
Flights in the data

Data through May 2026.

Delta Air Lines is the only airline in this data on this route, arriving on time 65% of the time across 143 flights. No comparison to make.

What the data says

Mondays have been rough.

STL–JFK flights arrived on time 81% of the time on Saturdays and just 45% on Mondays. That gap is worth planning around.

Keep a backup plan handy.

This route was cancelled 3.5% of the time. Typical for U.S. flights is around 1–2%.

Flights on this route

The breakdown

On-time by weekday
  • Mon45%(20 flights)
  • Tue60%(20 flights)
  • Wed74%(19 flights)
  • Thu63%(19 flights)
  • Fri74%(19 flights)
  • Sat81%(21 flights)
  • Sun60%(20 flights)
On-time trend by month
79%
May

Sep 83% → May 79% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
September 202583%23
October 202570%30
November 202559%29
December 202543%28
May 202679%24

Same trip, other airports

Keep nerding

Based on 143 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.