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Flight Reliability

DL 4908 · Delta Air Lines

New York → Nashville (JFK–BNA)94% of its flights flew this route. The rest (LEX–ATL, LGA–STL) are included in these numbers.

48
Bring Snacks
WanderNerd Reliability Score
75%
Arrive within 15 minutes
5 min
Average arrival delay
8.5%
Cancelled
16 min early
Median arrival delay

Based on 329 historical flights. Data through May 2026.

What the data says

Morning flights do better here.

DL 4908 departing between 6–9 AM arrived on time 94% of the time, versus 74% between 6–9 PM.

Monday is the weak spot.

DL 4908 arrived on time 82% of the time on Fridays. On Mondays: 67%.

A bit behind the Delta Air Lines network.

DL 4908 arrived on time 75% of the time, versus 81% across the Delta Air Lines network.

Keep a backup plan handy.

DL 4908 was cancelled 8.5% of the time. Typical for U.S. flights is around 1–2%.

The breakdown

On-time by weekday
  • Mon67%(43 flights)
  • Tue78%(45 flights)
  • Wed72%(39 flights)
  • Thu69%(39 flights)
  • Fri82%(44 flights)
  • Sat80%(46 flights)
  • Sun73%(44 flights)
On-time by departure window
  • 6–9 AM94%(16 flights)
  • 9 AM–12 PM—(4 flights)
  • 6–9 PM74%(280 flights)
On-time trend by month
66%
May

Jun 67% → May 66% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202567%24
July 202568%19
August 202587%30
September 202583%29
October 202566%29
November 202568%28
December 202573%30
January 202693%15
February 202679%14
March 202671%24
April 202683%29
May 202666%29
Departures on time
76%
Diverted
0.3%
Flights flown
300
Months covered
12

Same route, other flights

Keep nerding

Based on 329 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.