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Flight Reliability

DL 3803 · Delta Air Lines

Salt Lake City → SBA (SLC–SBA)92% of its flights flew this route. The rest (MCI–MSP, MSP–MCI) are included in these numbers.

92
Nerd Approved
WanderNerd Reliability Score
92%
Arrive within 15 minutes
12 min early
Average arrival delay
0.3%
Cancelled
20 min early
Median arrival delay

Based on 381 historical flights. Data through May 2026.

What the data says

The late departure is the smart one here.

DL 3803 departing between 6–9 PM arrived on time 97% of the time, versus 44% between 12–3 PM.

Thursday has been the better bet.

A small edge: 96% on time on Thursdays against 90% on Fridays.

Better than the Delta Air Lines network average.

DL 3803 arrived on time 92% of the time, versus 81% across the Delta Air Lines network.

It basically never cancels.

Out of 381 scheduled flights, only 0.3% were cancelled.

The breakdown

On-time by weekday
  • Mon93%(53 flights)
  • Tue92%(52 flights)
  • Wed91%(53 flights)
  • Thu96%(54 flights)
  • Fri90%(52 flights)
  • Sat91%(55 flights)
  • Sun91%(55 flights)
On-time by departure window
  • 12–3 PM44%(16 flights)
  • 3–6 PM56%(18 flights)
  • 6–9 PM97%(263 flights)
  • 9 PM–12 AM94%(77 flights)
On-time trend by month
100%
May

Jun 100% → May 100% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 2025100%29
July 202593%30
August 202594%31
September 202593%29
October 202597%31
November 2025100%29
December 202566%41
January 202689%35
February 202689%28
March 2026100%31
April 202693%30
May 2026100%30
Departures on time
91%
Diverted
1.6%
Flights flown
374
Months covered
12

Same route, other flights

Keep nerding

Based on 381 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.