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Flight Reliability

DL 4310 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 4310 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

94%
Arrive within 15 minutes
2 min early
Average arrival delay
0.4%
Cancelled
12 min early
Median arrival delay

Based on 534 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon92%(102 flights)
  • Tue100%(12 flights)
  • Wed93%(60 flights)
  • Thu91%(100 flights)
  • Fri91%(104 flights)
  • Sat98%(50 flights)
  • Sun98%(103 flights)
On-time by departure window
  • 12–3 PM—(5 flights)
  • 3–6 PM96%(265 flights)
  • 6–9 PM92%(261 flights)
On-time trend by month
92%
May

Jun 96% → May 92% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202596%44
July 202582%44
August 202593%42
September 202591%46
October 202596%46
November 2025100%42
December 202596%46
January 202696%46
February 2026100%40
March 202696%44
April 202691%42
May 202692%49
Departures on time
95%
Diverted
0.2%
Flights flown
531
Months covered
12

Keep nerding

Based on 534 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.