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WanderNerd

Flight Reliability

DL 3507 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 3507 moved between routes during this period. Numbers below combine all of them, so treat them as background, not a verdict. For a cleaner answer, check the route you are actually flying.

Combined across all its routes

84%
Arrive within 15 minutes
3 min
Average arrival delay
0%
Cancelled
9 min early
Median arrival delay

Based on 422 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon81%(62 flights)
  • Tue82%(61 flights)
  • Wed75%(61 flights)
  • Thu84%(63 flights)
  • Fri84%(62 flights)
  • Sat92%(50 flights)
  • Sun91%(63 flights)
On-time by departure window
  • 6–9 AM87%(152 flights)
  • 9 AM–12 PM87%(173 flights)
  • 12–3 PM80%(20 flights)
  • 6–9 PM93%(42 flights)
  • 9 PM–12 AM46%(35 flights)
On-time trend by month
80%
May

Jun 92% → May 80% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202592%50
July 202586%59
August 202573%62
September 202587%60
October 202597%62
November 202577%34
December 202542%19
March 202696%24
April 202692%12
May 202680%40
Departures on time
84%
Diverted
0%
Flights flown
422
Months covered
10

Based on 422 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.