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Flight Reliability

DL 1763 · Delta Air Lines

San Juan → Atlanta (SJU–ATL)

95
Nerd Approved
WanderNerd Reliability Score
94%
Arrive within 15 minutes
2 min early
Average arrival delay
1.4%
Cancelled
10 min early
Median arrival delay

Based on 365 historical flights. Data through May 2026.

What the data says

Monday is the weak spot.

DL 1763 arrived on time 98% of the time on Thursdays. On Mondays: 90%.

Better than the SJU–ATL route average.

DL 1763 arrived on time 94% of the time, versus 82% across the SJU–ATL route.

Better than the Delta Air Lines network average.

DL 1763 arrived on time 94% of the time, versus 81% across the Delta Air Lines network.

The breakdown

On-time by weekday
  • Mon90%(51 flights)
  • Tue94%(51 flights)
  • Wed94%(52 flights)
  • Thu98%(51 flights)
  • Fri94%(52 flights)
  • Sat94%(50 flights)
  • Sun94%(52 flights)
On-time trend by month
97%
May

Jun 83% → May 97% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202583%29
July 202594%31
August 202597%31
September 2025100%30
October 202597%31
November 202593%29
December 2025100%29
January 202690%30
February 202696%28
March 202693%30
April 202690%30
May 202697%31
Departures on time
94%
Diverted
0.3%
Flights flown
359
Months covered
12

Same route, other flights

Keep nerding

Based on 365 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.