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Flight Reliability

DL 3174 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 3174 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

92%
Arrive within 15 minutes
6 min early
Average arrival delay
0.7%
Cancelled
11 min early
Median arrival delay

Based on 292 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon93%(45 flights)
  • Tue100%(44 flights)
  • Wed86%(44 flights)
  • Thu98%(44 flights)
  • Fri93%(44 flights)
  • Sat95%(21 flights)
  • Sun83%(47 flights)
On-time by departure window
  • 6–9 AM93%(136 flights)
  • 9 AM–12 PM92%(153 flights)
On-time trend by month
82%
Dec

Jun 87% → Dec 82% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202587%37
July 202590%50
August 202593%42
September 2025100%38
October 202596%50
November 202597%38
December 202582%34
Departures on time
92%
Diverted
0.3%
Flights flown
289
Months covered
7

Keep nerding

Based on 292 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.