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Flight Reliability

DL 771 · Delta Air Lines

New York → Los Angeles (JFK–LAX)

78
Usually Fine
WanderNerd Reliability Score
76%
Arrive within 15 minutes
4 min
Average arrival delay
1.4%
Cancelled
7 min early
Median arrival delay

Based on 357 historical flights. Data through May 2026.

What the data says

Tuesday comes out ahead.

A small edge: 79% on time on Tuesdays against 73% on Sundays.

A bit behind the JFK–LAX route.

DL 771 arrived on time 76% of the time, versus 79% across the JFK–LAX route.

A bit behind the Delta Air Lines network.

DL 771 arrived on time 76% of the time, versus 81% across the Delta Air Lines network.

The breakdown

On-time by weekday
  • Mon77%(51 flights)
  • Tue79%(52 flights)
  • Wed76%(49 flights)
  • Thu76%(49 flights)
  • Fri77%(52 flights)
  • Sat75%(48 flights)
  • Sun73%(51 flights)
On-time by departure window
  • 12–3 PM—(3 flights)
  • 3–6 PM76%(347 flights)
  • 6–9 PM—(2 flights)
On-time trend by month
72%
May

Jun 62% → May 72% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202562%29
July 202558%31
August 202590%31
September 202573%30
October 202580%30
November 202573%30
December 202579%28
January 202679%29
February 202681%26
March 202684%31
April 202679%28
May 202672%29
Departures on time
84%
Diverted
0%
Flights flown
352
Months covered
12

Same route, other flights

Keep nerding

Based on 357 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.