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Flight Reliability

DL 2378 · Delta Air Lines

Atlanta → New York (ATL–JFK)88% of its flights flew this route. The rest (MIA–LGA) are included in these numbers.

62
A Little Dicey
WanderNerd Reliability Score
67%
Arrive within 15 minutes
18 min
Average arrival delay
2.0%
Cancelled
4 min early
Median arrival delay

Based on 296 historical flights. Data through May 2026.

What the data says

The 3–6 PM departure wins.

DL 2378 departing between 3–6 PM arrived on time 73% of the time, versus 64% between 6–9 PM.

Sunday scaries are real for this one.

DL 2378 arrived on time 76% of the time on Mondays and just 55% on Sundays. That gap is worth planning around.

Lagging the ATL–JFK route.

DL 2378 arrived on time 67% of the time, versus 74% across the ATL–JFK route.

Lagging the Delta Air Lines network.

DL 2378 arrived on time 67% of the time, versus 81% across the Delta Air Lines network.

The breakdown

On-time by weekday
  • Mon76%(42 flights)
  • Tue65%(43 flights)
  • Wed71%(41 flights)
  • Thu61%(43 flights)
  • Fri73%(40 flights)
  • Sat69%(36 flights)
  • Sun55%(44 flights)
On-time by departure window
  • 3–6 PM73%(91 flights)
  • 6–9 PM64%(198 flights)
On-time trend by month
72%
May

Jun 47% → May 72% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202547%30
July 202543%30
August 202577%30
September 202587%30
October 202573%30
November 202562%29
December 202560%30
March 202661%23
April 202689%28
May 202672%25
Departures on time
62%
Diverted
0.3%
Flights flown
289
Months covered
11

Same route, other flights

Keep nerding

Based on 296 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.