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Flight Reliability

DL 5720 · Delta Air Lines

Boston → New York (BOS–JFK)

89
Pretty Reliable
WanderNerd Reliability Score
88%
Arrive within 15 minutes
2 min early
Average arrival delay
1.9%
Cancelled
10 min early
Median arrival delay

Based on 364 historical flights. Data through May 2026.

What the data says

Skip Tuesday if you can.

DL 5720 arrived on time 94% of the time on Wednesdays. On Tuesdays: 82%.

Better than the BOS–JFK route average.

DL 5720 arrived on time 88% of the time, versus 76% across the BOS–JFK route.

A bit ahead of the Delta Air Lines network.

DL 5720 arrived on time 88% of the time, versus 81% across the Delta Air Lines network.

Trending in the right direction.

DL 5720 arrived on time 89% of the time over the last three months in the data, compared with 80% in the three months before that.

The breakdown

On-time by weekday
  • Mon86%(50 flights)
  • Tue82%(50 flights)
  • Wed94%(52 flights)
  • Thu86%(50 flights)
  • Fri92%(52 flights)
  • Sat90%(52 flights)
  • Sun86%(51 flights)
On-time by departure window
  • 9 AM–12 PM88%(356 flights)
  • 3–6 PM—(1 flights)
On-time trend by month
97%
May

Jun 93% → May 97% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202593%30
July 202587%31
August 202597%31
September 202593%30
October 202594%31
November 202586%28
December 202584%31
January 202686%28
February 202669%26
March 202681%31
April 202690%30
May 202697%30
Departures on time
89%
Diverted
0%
Flights flown
357
Months covered
12

Same route, other flights

Keep nerding

Based on 364 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.