Skip to content
WanderNerd
Check a flight

Flight Reliability

DL 1055 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 1055 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
5 min
Average arrival delay
1.4%
Cancelled
8 min early
Median arrival delay

Based on 518 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon73%(74 flights)
  • Tue84%(74 flights)
  • Wed82%(74 flights)
  • Thu76%(72 flights)
  • Fri83%(71 flights)
  • Sat77%(73 flights)
  • Sun75%(73 flights)
On-time by departure window
  • 12–3 PM82%(242 flights)
  • 3–6 PM78%(78 flights)
  • 6–9 PM93%(15 flights)
  • 9 PM–12 AM73%(176 flights)
On-time trend by month
80%
May

Jun 61% → May 80% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202561%36
July 202567%30
August 202580%30
September 202590%30
October 202574%31
November 202576%29
December 202571%31
January 202678%58
February 202684%56
March 202686%62
April 202685%58
May 202680%60
Departures on time
78%
Diverted
0%
Flights flown
511
Months covered
12

Keep nerding

Based on 518 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.