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Flight Reliability

DL 987 · Delta Air Lines

Atlanta → Boston (ATL–BOS)

90
Nerd Approved
WanderNerd Reliability Score
90%
Arrive within 15 minutes
5 min early
Average arrival delay
2.2%
Cancelled
10 min early
Median arrival delay

Based on 325 historical flights. Data through May 2026.

What the data says

Sunday scaries are real for this one.

DL 987 arrived on time 96% of the time on Fridays. On Sundays: 86%.

Well ahead of the ATL–BOS route.

DL 987 arrived on time 90% of the time, versus 74% across the ATL–BOS route.

Better than the Delta Air Lines network average.

DL 987 arrived on time 90% of the time, versus 81% across the Delta Air Lines network.

Ticking up lately.

DL 987 arrived on time 90% of the time over the last three months in the data, compared with 86% in the three months before that.

The breakdown

On-time by weekday
  • Mon89%(47 flights)
  • Tue90%(48 flights)
  • Wed92%(49 flights)
  • Thu88%(49 flights)
  • Fri96%(48 flights)
  • Sat93%(27 flights)
  • Sun86%(50 flights)
On-time trend by month
94%
May

Jun 92% → May 94% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202592%26
July 202596%26
August 202586%21
September 202595%20
October 202593%27
November 202596%25
December 202579%28
January 202679%29
February 2026100%25
March 202683%30
April 202693%30
May 202694%31
Departures on time
90%
Diverted
0%
Flights flown
318
Months covered
12

Same route, other flights

Keep nerding

Based on 325 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.