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Flight Reliability

DL 1273 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 1273 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

81%
Arrive within 15 minutes
6 min
Average arrival delay
1.0%
Cancelled
8 min early
Median arrival delay

Based on 417 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon80%(60 flights)
  • Tue87%(60 flights)
  • Wed85%(60 flights)
  • Thu80%(61 flights)
  • Fri78%(59 flights)
  • Sat87%(54 flights)
  • Sun73%(59 flights)
On-time by departure window
  • 6–9 AM—(7 flights)
  • 9 AM–12 PM—(8 flights)
  • 12–3 PM86%(103 flights)
  • 3–6 PM78%(270 flights)
  • 6–9 PM88%(25 flights)
On-time trend by month
90%
May

Jun 77% → May 90% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202577%30
July 202568%31
August 202560%30
September 202563%30
October 202584%31
November 202580%30
December 202577%31
January 202689%27
February 202688%40
March 202690%61
April 202695%42
May 202690%30
Departures on time
77%
Diverted
0%
Flights flown
413
Months covered
12

Keep nerding

Based on 417 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.