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Flight Reliability

DL 1477 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 1477 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
9 min
Average arrival delay
1.5%
Cancelled
3 min early
Median arrival delay

Based on 652 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon76%(91 flights)
  • Tue76%(95 flights)
  • Wed78%(90 flights)
  • Thu83%(89 flights)
  • Fri74%(88 flights)
  • Sat75%(94 flights)
  • Sun71%(91 flights)
On-time by departure window
  • 9 AM–12 PM—(4 flights)
  • 12–3 PM76%(421 flights)
  • 3–6 PM75%(213 flights)
On-time trend by month
86%
May

Jun 66% → May 86% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202566%59
July 202576%59
August 202589%62
September 202590%60
October 202583%60
November 202573%51
December 202563%54
January 202666%55
February 202682%56
March 202660%37
April 202667%30
May 202686%55
Departures on time
76%
Diverted
0.6%
Flights flown
638
Months covered
12

Keep nerding

Based on 652 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.