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Flight Reliability

DL 1163 · Delta Air Lines

Detroit → Boston (DTW–BOS)

91
Nerd Approved
WanderNerd Reliability Score
90%
Arrive within 15 minutes
8 min early
Average arrival delay
1.9%
Cancelled
14 min early
Median arrival delay

Based on 365 historical flights. Data through May 2026.

What the data says

Friday is doing you no favors.

DL 1163 arrived on time 96% of the time on Tuesdays. On Fridays: 85%.

Well ahead of the DTW–BOS route.

DL 1163 arrived on time 90% of the time, versus 75% across the DTW–BOS route.

Better than the Delta Air Lines network average.

DL 1163 arrived on time 90% of the time, versus 81% across the Delta Air Lines network.

Trending in the right direction.

DL 1163 arrived on time 96% 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
  • Mon90%(50 flights)
  • Tue96%(49 flights)
  • Wed92%(52 flights)
  • Thu89%(52 flights)
  • Fri85%(52 flights)
  • Sat90%(51 flights)
  • Sun90%(52 flights)
On-time trend by month
100%
May

Jun 97% → May 100% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202597%29
July 202584%31
August 202590%31
September 202597%30
October 202597%31
November 202590%29
December 202590%31
January 202668%28
February 202681%26
March 202694%31
April 202693%30
May 2026100%31
Departures on time
90%
Diverted
0%
Flights flown
358
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.