Skip to content
WanderNerd
Check a flight

Flight Reliability

DL 1748 · Delta Air Lines

Boston → Detroit (BOS–DTW)

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

Based on 365 historical flights. Data through May 2026.

What the data says

Sunday scaries are real for this one.

DL 1748 arrived on time 96% of the time on Mondays. On Sundays: 85%.

Better than the BOS–DTW route average.

DL 1748 arrived on time 90% of the time, versus 78% across the BOS–DTW route.

Better than the Delta Air Lines network average.

DL 1748 arrived on time 90% of the time, versus 81% across the Delta Air Lines network.

Trending in the right direction.

DL 1748 arrived on time 94% of the time over the last three months in the data, compared with 75% in the three months before that.

The breakdown

On-time by weekday
  • Mon96%(49 flights)
  • Tue90%(51 flights)
  • Wed90%(52 flights)
  • Thu90%(52 flights)
  • Fri89%(52 flights)
  • Sat92%(49 flights)
  • Sun85%(53 flights)
On-time trend by month
94%
May

Jun 97% → May 94% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202597%29
July 2025100%30
August 202597%30
September 202597%30
October 2025100%31
November 202586%29
December 202571%31
January 202673%30
February 202681%26
March 202687%31
April 2026100%30
May 202694%31
Departures on time
91%
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.