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Flight Reliability

DL 3550 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 3550 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

92%
Arrive within 15 minutes
6 min early
Average arrival delay
0%
Cancelled
12 min early
Median arrival delay

Based on 240 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon95%(42 flights)
  • Tue97%(38 flights)
  • Wed90%(38 flights)
  • Thu95%(38 flights)
  • Fri92%(38 flights)
  • Sat—(2 flights)
  • Sun82%(44 flights)
On-time by departure window
  • 3–6 PM89%(120 flights)
  • 6–9 PM94%(120 flights)
On-time trend by month
97%
Nov

Jun 92% → Nov 97% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202592%36
July 202578%46
August 202595%40
September 202594%34
October 202596%46
November 202597%36
Departures on time
90%
Diverted
0%
Flights flown
240
Months covered
7

Keep nerding

Based on 240 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.