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Flight Reliability

DL 2637 · Delta Air Lines

Nashville → Atlanta (BNA–ATL)

92
Nerd Approved
WanderNerd Reliability Score
96%
Arrive within 15 minutes
12 min early
Average arrival delay
3.1%
Cancelled
18 min early
Median arrival delay

Based on 350 historical flights. Data through May 2026.

What the data says

Skip Tuesday if you can.

DL 2637 arrived on time 100% of the time on Wednesdays. On Tuesdays: 92%.

Better than the BNA–ATL route average.

DL 2637 arrived on time 96% of the time, versus 85% across the BNA–ATL route.

Better than the Delta Air Lines network average.

DL 2637 arrived on time 96% of the time, versus 81% across the Delta Air Lines network.

Keep a backup plan handy.

DL 2637 was cancelled 3.1% of the time. Typical for U.S. flights is around 1–2%.

The breakdown

On-time by weekday
  • Mon94%(49 flights)
  • Tue92%(51 flights)
  • Wed100%(52 flights)
  • Thu96%(52 flights)
  • Fri96%(50 flights)
  • Sat95%(37 flights)
  • Sun98%(48 flights)
On-time by departure window
  • 3–6 AM96%(335 flights)
  • 9 AM–12 PM—(4 flights)
On-time trend by month
97%
May

Jun 100% → May 97% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 2025100%26
July 202597%29
August 202597%31
September 2025100%30
October 202594%31
November 2025100%26
December 202593%28
January 2026100%24
February 202696%25
March 202687%30
April 202693%30
May 202697%29
Departures on time
96%
Diverted
0%
Flights flown
339
Months covered
12

Same route, other flights

Keep nerding

Based on 350 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.