Skip to content
WanderNerd
Check a flight

Flight Reliability

DL 4050 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 4050 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
9 min early
Average arrival delay
0.4%
Cancelled
14 min early
Median arrival delay

Based on 509 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon93%(72 flights)
  • Tue97%(72 flights)
  • Wed94%(72 flights)
  • Thu97%(71 flights)
  • Fri99%(69 flights)
  • Sat92%(78 flights)
  • Sun96%(73 flights)
On-time by departure window
  • 6–9 AM—(1 flights)
  • 9 AM–12 PM96%(393 flights)
  • 12–3 PM93%(113 flights)
On-time trend by month
88%
May

Jun 96% → May 88% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202596%53
July 202598%62
August 202595%62
September 202593%60
October 202597%62
November 202597%58
December 2025100%50
January 202690%31
February 202693%28
April 202694%18
May 202688%16
Departures on time
95%
Diverted
0%
Flights flown
507
Months covered
12

Keep nerding

Based on 509 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.