Skip to content
WanderNerd
Check a flight

Flight Reliability

DL 3173 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 3173 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

96%
Arrive within 15 minutes
10 min early
Average arrival delay
4.3%
Cancelled
13 min early
Median arrival delay

Based on 301 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon98%(40 flights)
  • Tue91%(44 flights)
  • Wed96%(44 flights)
  • Thu100%(44 flights)
  • Fri95%(42 flights)
  • Sat97%(36 flights)
  • Sun95%(38 flights)
On-time by departure window
  • 6–9 AM96%(144 flights)
  • 9 AM–12 PM96%(144 flights)
On-time trend by month
95%
May

Jun 100% → May 95% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 2025100%14
January 202698%44
February 202698%54
March 202695%58
April 202693%58
May 202695%60
Departures on time
92%
Diverted
0%
Flights flown
288
Months covered
6

Keep nerding

Based on 301 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.