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Flight Reliability

DL 5219 · Delta Air Lines

Raleigh–Durham → New York (RDU–JFK)96% of its flights flew this route. The rest (ATL–TYS) are included in these numbers.

32
Bring Snacks
WanderNerd Reliability Score
65%
Arrive within 15 minutes
19 min
Average arrival delay
8.8%
Cancelled
4 min early
Median arrival delay

Based on 362 historical flights. Data through May 2026.

What the data says

The late departure is the smart one here.

DL 5219 departing between 9 PM–12 AM arrived on time 87% of the time, versus 64% between 6–9 PM.

Thursdays have been rough.

DL 5219 arrived on time 77% of the time on Saturdays and just 51% on Thursdays. That gap is worth planning around.

Lagging the RDU–JFK route.

DL 5219 arrived on time 65% of the time, versus 76% across the RDU–JFK route.

Well behind the Delta Air Lines network.

DL 5219 arrived on time 65% of the time, versus 81% across the Delta Air Lines network.

The breakdown

On-time by weekday
  • Mon74%(46 flights)
  • Tue75%(48 flights)
  • Wed58%(48 flights)
  • Thu51%(47 flights)
  • Fri56%(48 flights)
  • Sat77%(48 flights)
  • Sun61%(44 flights)
On-time by departure window
  • 6–9 PM64%(314 flights)
  • 9 PM–12 AM87%(15 flights)
On-time trend by month
63%
May

Jun 64% → May 63% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202564%22
July 202542%19
August 202574%31
September 202579%29
October 202570%30
November 202579%28
December 202569%29
January 202670%27
February 202644%25
March 202650%30
April 202662%29
May 202663%30
Departures on time
61%
Diverted
0.3%
Flights flown
329
Months covered
12

Same route, other flights

Keep nerding

Based on 362 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.