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Flight Reliability

DL 3843 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 3843 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

72%
Arrive within 15 minutes
19 min
Average arrival delay
1.6%
Cancelled
4 min early
Median arrival delay

Based on 321 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon78%(45 flights)
  • Tue76%(49 flights)
  • Wed76%(49 flights)
  • Thu71%(48 flights)
  • Fri72%(43 flights)
  • Sat56%(39 flights)
  • Sun74%(43 flights)
On-time by departure window
  • 6–9 AM77%(34 flights)
  • 12–3 PM72%(112 flights)
  • 3–6 PM70%(144 flights)
  • 6–9 PM77%(26 flights)
On-time trend by month
78%
May

Jun 79% → May 78% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202579%14
July 202571%24
August 202564%14
January 202667%42
February 202674%43
March 202661%56
April 202682%56
May 202678%60
Departures on time
72%
Diverted
0%
Flights flown
316
Months covered
11

Keep nerding

Based on 321 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.