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Flight Reliability

DL 1019 · Delta Air Lines

Boston → Detroit (BOS–DTW)

92
Nerd Approved
WanderNerd Reliability Score
95%
Arrive within 15 minutes
10 min early
Average arrival delay
2.7%
Cancelled
16 min early
Median arrival delay

Based on 365 historical flights. Data through May 2026.

What the data says

Tuesday comes out ahead.

A small edge: 98% on time on Tuesdays against 92% on Thursdays.

Well ahead of the BOS–DTW route.

DL 1019 arrived on time 95% of the time, versus 78% across the BOS–DTW route.

Better than the Delta Air Lines network average.

DL 1019 arrived on time 95% of the time, versus 81% across the Delta Air Lines network.

Ticking up lately.

DL 1019 arrived on time 96% of the time over the last three months in the data, compared with 90% in the three months before that.

The breakdown

On-time by weekday
  • Mon94%(49 flights)
  • Tue98%(50 flights)
  • Wed92%(52 flights)
  • Thu92%(52 flights)
  • Fri94%(50 flights)
  • Sat96%(51 flights)
  • Sun98%(51 flights)
On-time trend by month
100%
May

Jun 100% → May 100% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 2025100%28
July 202597%31
August 202597%31
September 2025100%30
October 202597%30
November 202593%30
December 202590%30
January 202683%29
February 202696%25
March 202697%31
April 202690%29
May 2026100%31
Departures on time
95%
Diverted
0%
Flights flown
355
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.