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Flight Reliability

DL 2157 · Delta Air Lines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and DL 2157 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

89%
Arrive within 15 minutes
2 min early
Average arrival delay
1.8%
Cancelled
10 min early
Median arrival delay

Based on 435 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon84%(62 flights)
  • Tue87%(62 flights)
  • Wed92%(62 flights)
  • Thu89%(62 flights)
  • Fri90%(61 flights)
  • Sat91%(58 flights)
  • Sun87%(60 flights)
On-time by departure window
  • 6–9 AM97%(129 flights)
  • 9 AM–12 PM—(8 flights)
  • 12–3 PM85%(282 flights)
  • 3–6 PM—(7 flights)
  • 9 PM–12 AM—(1 flights)
On-time trend by month
84%
May

Jun 93% → May 84% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202593%28
July 2025100%31
October 202596%26
November 202597%30
December 2025100%20
January 202682%51
February 202684%56
March 202684%62
April 202688%60
May 202684%62
Departures on time
89%
Diverted
0%
Flights flown
427
Months covered
11

Keep nerding

Based on 435 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.