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Flight Reliability

DL 798 · Delta Air Lines

New York → Phoenix (JFK–PHX)

63
A Little Dicey
WanderNerd Reliability Score
71%
Arrive within 15 minutes
11 min
Average arrival delay
3.6%
Cancelled
2 min early
Median arrival delay

Based on 364 historical flights. Data through May 2026.

What the data says

The late departure is the smart one here.

DL 798 departing between 6–9 PM arrived on time 78% of the time, versus 69% between 3–6 PM.

Skip Wednesday if you can.

DL 798 arrived on time 76% of the time on Tuesdays. On Wednesdays: 63%.

Lagging the JFK–PHX route.

DL 798 arrived on time 71% of the time, versus 79% across the JFK–PHX route.

Lagging the Delta Air Lines network.

DL 798 arrived on time 71% of the time, versus 81% across the Delta Air Lines network.

The breakdown

On-time by weekday
  • Mon71%(49 flights)
  • Tue76%(49 flights)
  • Wed63%(51 flights)
  • Thu70%(50 flights)
  • Fri74%(49 flights)
  • Sat75%(52 flights)
  • Sun68%(50 flights)
On-time by departure window
  • 3–6 PM69%(286 flights)
  • 6–9 PM78%(64 flights)
On-time trend by month
71%
May

Jun 63% → May 71% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202563%30
July 202561%28
August 202590%30
September 202573%30
October 202560%30
November 202548%27
December 202563%30
January 202676%29
February 202677%26
March 202679%29
April 202687%30
May 202671%31
Departures on time
78%
Diverted
0.3%
Flights flown
350
Months covered
12

Same route, other flights

Keep nerding

Based on 364 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.