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Flight Reliability

DL 453 · Delta Air Lines

Atlanta → Salt Lake City (ATL–SLC)97% of its flights flew this route. The rest (JFK–DTW) are included in these numbers.

71
Usually Fine
WanderNerd Reliability Score
71%
Arrive within 15 minutes
16 min
Average arrival delay
0.6%
Cancelled
1 min early
Median arrival delay

Based on 357 historical flights. Data through May 2026.

What the data says

Friday is doing you no favors.

DL 453 arrived on time 79% of the time on Wednesdays. On Fridays: 67%.

Lagging the ATL–SLC route.

DL 453 arrived on time 71% of the time, versus 83% across the ATL–SLC route.

Lagging the Delta Air Lines network.

DL 453 arrived on time 71% of the time, versus 81% across the Delta Air Lines network.

The breakdown

On-time by weekday
  • Mon69%(51 flights)
  • Tue72%(50 flights)
  • Wed79%(52 flights)
  • Thu71%(51 flights)
  • Fri67%(51 flights)
  • Sat70%(46 flights)
  • Sun71%(52 flights)
On-time by departure window
  • 3–6 PM73%(11 flights)
  • 6–9 PM—(1 flights)
  • 9 PM–12 AM71%(341 flights)
On-time trend by month
70%
May

Jun 38% → May 70% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202538%29
July 202561%31
August 202561%31
September 202586%28
October 202587%30
November 202570%30
December 202578%27
January 202666%29
February 202686%28
March 202680%30
April 202673%30
May 202670%30
Departures on time
70%
Diverted
0.6%
Flights flown
353
Months covered
12

Same route, other flights

Keep nerding

Based on 357 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.