Skip to content
WanderNerd
Check a flight

Route Reliability

New York → San Antonio

JFK–SAT · 1,587 miles · John F. Kennedy International Airport to San Antonio International Airport

83
Pretty Reliable
WanderNerd Reliability Score
91%
Arrive within 15 minutes
5 min early
Average arrival delay
3.9%
Cancelled
362
Flights in the data

Data through May 2026.

Delta Air Lines is the only airline in this data on this route, arriving on time 91% of the time across 362 flights. No comparison to make.

What the data says

The 6–9 AM departure wins.

JFK–SAT flights departing between 6–9 AM arrived on time 92% of the time, versus 73% between 9 AM–12 PM.

Saturday is the weak spot.

JFK–SAT flights arrived on time 96% of the time on Wednesdays. On Saturdays: 88%.

Keep a backup plan handy.

This route was cancelled 3.9% of the time. Typical for U.S. flights is around 1–2%.

Trending in the right direction.

JFK–SAT flights arrived on time 95% of the time over the last three months in the data, compared with 80% in the three months before that.

Flights on this route

The breakdown

On-time by weekday
  • Mon92%(50 flights)
  • Tue92%(49 flights)
  • Wed96%(51 flights)
  • Thu88%(51 flights)
  • Fri88%(49 flights)
  • Sat88%(48 flights)
  • Sun90%(50 flights)
On-time by departure window
  • 6–9 AM92%(312 flights)
  • 9 AM–12 PM73%(15 flights)
  • 12–3 PM—(4 flights)
  • 3–6 PM—(1 flights)
  • 6–9 PM88%(16 flights)
On-time trend by month
97%
May

Jun 96% → May 97% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202596%27
July 202587%31
August 2025100%31
September 202590%30
October 202590%31
November 202593%30
December 202570%27
January 202685%27
February 202685%26
March 202693%27
April 202697%30
May 202697%31

Same trip, other airports

Keep nerding

Based on 362 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.