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Flight Reliability

DL 973 · Delta Air Lines

Boston → Atlanta (BOS–ATL)

84
Pretty Reliable
WanderNerd Reliability Score
85%
Arrive within 15 minutes
1 min
Average arrival delay
1.9%
Cancelled
7 min early
Median arrival delay

Based on 365 historical flights. Data through May 2026.

What the data says

Morning flights do better here.

DL 973 departing between 9 AM–12 PM arrived on time 86% of the time, versus 64% between 6–9 PM.

Sunday scaries are real for this one.

DL 973 arrived on time 94% of the time on Wednesdays and just 73% on Sundays. That gap is worth planning around.

A bit ahead of the BOS–ATL route.

DL 973 arrived on time 85% of the time, versus 79% across the BOS–ATL route.

A bit ahead of the Delta Air Lines network.

DL 973 arrived on time 85% of the time, versus 81% across the Delta Air Lines network.

The breakdown

On-time by weekday
  • Mon84%(50 flights)
  • Tue90%(50 flights)
  • Wed94%(52 flights)
  • Thu89%(52 flights)
  • Fri82%(51 flights)
  • Sat82%(51 flights)
  • Sun73%(51 flights)
On-time by departure window
  • 9 AM–12 PM86%(332 flights)
  • 6–9 PM64%(25 flights)
On-time trend by month
71%
May

Jun 90% → May 71% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202590%30
July 202587%31
August 202590%31
September 202597%30
October 202590%31
November 202580%30
December 202583%30
January 202666%29
February 202688%25
March 202686%29
April 202690%30
May 202671%31
Departures on time
86%
Diverted
0.3%
Flights flown
357
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.