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Flight Reliability

DL 670 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 670 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

79%
Arrive within 15 minutes
1 min
Average arrival delay
1.8%
Cancelled
10 min early
Median arrival delay

Based on 329 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon78%(50 flights)
  • Tue91%(42 flights)
  • Wed81%(42 flights)
  • Thu88%(50 flights)
  • Fri73%(48 flights)
  • Sat76%(45 flights)
  • Sun67%(46 flights)
On-time by departure window
  • 6–9 AM—(1 flights)
  • 9 AM–12 PM—(4 flights)
  • 12–3 PM—(4 flights)
  • 3–6 PM61%(111 flights)
  • 6–9 PM—(6 flights)
  • 9 PM–12 AM91%(197 flights)
On-time trend by month
60%
May

Jun 70% → May 60% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202570%10
July 202596%23
August 202593%29
September 202562%13
October 202593%15
December 202525%12
January 202683%47
February 202693%41
March 202684%55
April 202664%58
May 202660%15
Departures on time
84%
Diverted
0%
Flights flown
323
Months covered
12

Keep nerding

Based on 329 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.