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Flight Reliability

DL 5455 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 5455 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

72%
Arrive within 15 minutes
20 min
Average arrival delay
7.9%
Cancelled
8 min early
Median arrival delay

Based on 506 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon71%(72 flights)
  • Tue65%(76 flights)
  • Wed74%(78 flights)
  • Thu78%(72 flights)
  • Fri72%(78 flights)
  • Sat80%(20 flights)
  • Sun68%(69 flights)
On-time by departure window
  • 12–3 PM70%(271 flights)
  • 3–6 PM79%(131 flights)
  • 6–9 PM64%(63 flights)
On-time trend by month
63%
May

Jun 58% → May 63% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202558%43
July 202565%54
August 202582%55
September 202588%34
October 202544%27
November 202575%24
December 202538%16
January 202690%40
February 202693%44
March 202672%47
April 202663%51
May 202663%30
Departures on time
73%
Diverted
0.2%
Flights flown
465
Months covered
12

Keep nerding

Based on 506 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.