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Flight Reliability

DL 1148 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 1148 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

82%
Arrive within 15 minutes
1 min
Average arrival delay
1.7%
Cancelled
10 min early
Median arrival delay

Based on 421 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon85%(60 flights)
  • Tue88%(57 flights)
  • Wed86%(57 flights)
  • Thu81%(63 flights)
  • Fri79%(61 flights)
  • Sat79%(53 flights)
  • Sun79%(63 flights)
On-time by departure window
  • 6–9 AM85%(192 flights)
  • 12–3 PM72%(64 flights)
  • 3–6 PM83%(158 flights)
On-time trend by month
69%
May

Jun 89% → May 69% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202589%28
July 202590%29
August 202587%31
September 202583%30
October 202597%31
November 202579%29
December 202570%20
January 202691%23
February 202692%37
March 202673%59
April 202683%42
May 202669%55
Departures on time
84%
Diverted
0%
Flights flown
414
Months covered
12

Keep nerding

Based on 421 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.