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Flight Reliability

DL 3745 · Delta Air Lines

Tucson → Salt Lake City (TUS–SLC)

100
Nerd Approved
WanderNerd Reliability Score
97%
Arrive within 15 minutes
14 min early
Average arrival delay
0%
Cancelled
18 min early
Median arrival delay

Based on 365 historical flights. Data through May 2026.

What the data says

Thursday is the weak spot.

DL 3745 arrived on time 100% of the time on Mondays. On Thursdays: 92%.

Well ahead of the Delta Air Lines network.

DL 3745 arrived on time 97% of the time, versus 81% across the Delta Air Lines network.

It basically never cancels.

Out of 365 scheduled flights, only 0.0% were cancelled.

The breakdown

On-time by weekday
  • Mon100%(52 flights)
  • Tue96%(52 flights)
  • Wed96%(52 flights)
  • Thu92%(52 flights)
  • Fri100%(51 flights)
  • Sat98%(52 flights)
  • Sun94%(53 flights)
On-time by departure window
  • 3–6 AM96%(154 flights)
  • 6–9 AM97%(210 flights)
On-time trend by month
94%
May

Jun 83% → May 94% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202583%30
July 202597%31
August 2025100%31
September 2025100%30
October 2025100%31
November 202597%30
December 202597%31
January 2026100%30
February 202696%28
March 202697%31
April 2026100%30
May 202694%31
Departures on time
96%
Diverted
0.3%
Flights flown
364
Months covered
12

Same route, other flights

Keep nerding

Based on 365 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.