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Flight Reliability

DL 5690 · Delta Air Lines

Pittsburgh → Boston (PIT–BOS)

95
Nerd Approved
WanderNerd Reliability Score
91%
Arrive within 15 minutes
10 min early
Average arrival delay
1.1%
Cancelled
15 min early
Median arrival delay

Based on 365 historical flights. Data through May 2026.

What the data says

Skip Wednesday if you can.

DL 5690 arrived on time 94% of the time on Sundays. On Wednesdays: 87%.

Better than the PIT–BOS route average.

DL 5690 arrived on time 91% of the time, versus 79% across the PIT–BOS route.

Better than the Delta Air Lines network average.

DL 5690 arrived on time 91% of the time, versus 81% across the Delta Air Lines network.

Ticking up lately.

DL 5690 arrived on time 92% of the time over the last three months in the data, compared with 87% in the three months before that.

The breakdown

On-time by weekday
  • Mon94%(50 flights)
  • Tue94%(50 flights)
  • Wed87%(52 flights)
  • Thu94%(52 flights)
  • Fri89%(52 flights)
  • Sat89%(52 flights)
  • Sun94%(53 flights)
On-time trend by month
97%
May

Jun 97% → May 97% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202597%30
July 202594%31
August 202587%31
September 202593%30
October 202590%31
November 202597%30
December 202581%31
January 202693%29
February 202689%26
March 202684%31
April 202697%30
May 202697%31
Departures on time
95%
Diverted
0%
Flights flown
361
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.