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Flight Reliability

DL 1549 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 1549 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

85%
Arrive within 15 minutes
1 min
Average arrival delay
0.6%
Cancelled
13 min early
Median arrival delay

Based on 541 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon79%(80 flights)
  • Tue82%(78 flights)
  • Wed90%(76 flights)
  • Thu86%(77 flights)
  • Fri86%(79 flights)
  • Sat80%(66 flights)
  • Sun92%(82 flights)
On-time by departure window
  • 6–9 AM89%(170 flights)
  • 9 AM–12 PM88%(171 flights)
  • 12–3 PM78%(101 flights)
  • 3–6 PM83%(63 flights)
  • 6–9 PM70%(33 flights)
On-time trend by month
79%
May

Jun 93% → May 79% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202593%53
July 202595%62
August 202590%62
September 202583%60
October 202585%60
November 202594%48
December 202531%13
February 202679%14
March 202671%48
April 202688%56
May 202679%58
Departures on time
82%
Diverted
0%
Flights flown
538
Months covered
12

Keep nerding

Based on 541 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.