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Flight Reliability

DL 738 · Delta Air Lines

New York → Los Angeles (JFK–LAX)

76
Usually Fine
WanderNerd Reliability Score
76%
Arrive within 15 minutes
9 min
Average arrival delay
1.9%
Cancelled
9 min early
Median arrival delay

Based on 365 historical flights. Data through May 2026.

What the data says

Sunday scaries are real for this one.

DL 738 arrived on time 86% of the time on Mondays and just 65% on Sundays. That gap is worth planning around.

A bit behind the JFK–LAX route.

DL 738 arrived on time 76% of the time, versus 79% across the JFK–LAX route.

A bit behind the Delta Air Lines network.

DL 738 arrived on time 76% of the time, versus 81% across the Delta Air Lines network.

Trending in the right direction.

DL 738 arrived on time 86% of the time over the last three months in the data, compared with 74% in the three months before that.

The breakdown

On-time by weekday
  • Mon86%(50 flights)
  • Tue73%(52 flights)
  • Wed79%(52 flights)
  • Thu80%(51 flights)
  • Fri80%(50 flights)
  • Sat67%(51 flights)
  • Sun65%(52 flights)
On-time by departure window
  • 12–3 PM—(3 flights)
  • 3–6 PM76%(355 flights)
On-time trend by month
81%
May

Jun 73% → May 81% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202573%30
July 202563%30
August 202581%31
September 202572%29
October 202568%31
November 202573%30
December 202565%31
January 202676%29
February 202681%26
March 202694%31
April 202683%29
May 202681%31
Departures on time
77%
Diverted
0%
Flights flown
358
Months covered
12

Same route, other flights

Keep nerding

Based on 365 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.