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Flight Reliability

DL 405 · Delta Air Lines

San Francisco → New York (SFO–JFK)

89
Pretty Reliable
WanderNerd Reliability Score
89%
Arrive within 15 minutes
7 min early
Average arrival delay
1.1%
Cancelled
16 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 405 arrived on time 96% of the time on Wednesdays. On Sundays: 84%.

Better than the SFO–JFK route average.

DL 405 arrived on time 89% of the time, versus 81% across the SFO–JFK route.

Better than the Delta Air Lines network average.

DL 405 arrived on time 89% of the time, versus 81% across the Delta Air Lines network.

The breakdown

On-time by weekday
  • Mon90%(51 flights)
  • Tue90%(52 flights)
  • Wed96%(52 flights)
  • Thu86%(51 flights)
  • Fri88%(50 flights)
  • Sat88%(51 flights)
  • Sun84%(51 flights)
On-time trend by month
81%
May

Jun 90% → May 81% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202590%30
July 202590%29
August 202593%30
September 202593%29
October 202594%31
November 202587%30
December 202587%31
January 202683%30
February 202692%26
March 202697%31
April 202683%30
May 202681%31
Departures on time
90%
Diverted
0.8%
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.