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Flight Reliability

DL 5663 · Delta Air Lines

Columbus → Boston (CMH–BOS)

92
Nerd Approved
WanderNerd Reliability Score
91%
Arrive within 15 minutes
11 min early
Average arrival delay
1.4%
Cancelled
16 min early
Median arrival delay

Based on 365 historical flights. Data through May 2026.

What the data says

Skip Monday if you can.

DL 5663 arrived on time 96% of the time on Fridays. On Mondays: 88%.

Better than the CMH–BOS route average.

DL 5663 arrived on time 91% of the time, versus 82% across the CMH–BOS route.

Better than the Delta Air Lines network average.

DL 5663 arrived on time 91% of the time, versus 81% across the Delta Air Lines network.

Trending in the right direction.

DL 5663 arrived on time 94% of the time over the last three months in the data, compared with 82% in the three months before that.

The breakdown

On-time by weekday
  • Mon88%(49 flights)
  • Tue90%(51 flights)
  • Wed88%(51 flights)
  • Thu92%(51 flights)
  • Fri96%(52 flights)
  • Sat89%(52 flights)
  • Sun96%(52 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 202593%30
August 202587%31
September 2025100%30
October 202597%31
November 202597%29
December 202581%31
January 202672%29
February 202692%26
March 202687%31
April 202697%30
May 202697%30
Departures on time
94%
Diverted
0.5%
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.