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Flight Reliability

DL 5645 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 5645 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

76%
Arrive within 15 minutes
12 min
Average arrival delay
2.6%
Cancelled
8 min early
Median arrival delay

Based on 620 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon81%(100 flights)
  • Tue73%(100 flights)
  • Wed70%(95 flights)
  • Thu72%(96 flights)
  • Fri69%(93 flights)
  • Sat89%(18 flights)
  • Sun87%(100 flights)
On-time by departure window
  • 9 AM–12 PM—(4 flights)
  • 12–3 PM—(4 flights)
  • 3–6 PM75%(594 flights)
On-time trend by month
84%
May

Jun 57% → May 84% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202557%53
July 202580%44
August 202580%60
September 202582%54
October 202572%54
November 202568%47
December 202579%42
January 202672%46
February 202679%48
March 202673%52
April 202684%51
May 202684%51
Departures on time
80%
Diverted
0.3%
Flights flown
602
Months covered
12

Keep nerding

Based on 620 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.