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Flight Reliability

F9 1902 · Frontier Airlines

San Diego → Salt Lake City (SAN–SLC)

88
Pretty Reliable
WanderNerd Reliability Score
83%
Arrive within 15 minutes
9 min
Average arrival delay
0.8%
Cancelled
7 min early
Median arrival delay

Based on 129 historical flights. Data through May 2026.

What the data says

Morning flights do better here.

F9 1902 departing between 6–9 AM arrived on time 93% of the time, versus 77% between 6–9 PM.

Thursday is the weak spot.

F9 1902 arrived on time 88% of the time on Mondays. On Thursdays: 75%.

Better than the Frontier Airlines network average.

F9 1902 arrived on time 83% of the time, versus 73% across the Frontier Airlines network.

Trending in the right direction.

F9 1902 arrived on time 90% of the time over the last three months in the data, compared with 82% in the three months before that.

The breakdown

On-time by weekday
  • Mon88%(33 flights)
  • Tue—(2 flights)
  • Wed—(0 flights)
  • Thu75%(12 flights)
  • Fri86%(36 flights)
  • Sat—(3 flights)
  • Sun76%(42 flights)
On-time by departure window
  • 6–9 AM93%(27 flights)
  • 9 AM–12 PM83%(63 flights)
  • 12–3 PM84%(19 flights)
  • 3–6 PM—(6 flights)
  • 6–9 PM77%(13 flights)
On-time trend by month
88%
Apr

Jul 83% → Apr 88% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
July 202583%12
August 202571%14
September 202592%13
October 202592%13
November 202562%13
December 202591%11
January 202682%11
February 2026100%11
April 202688%16
Departures on time
81%
Diverted
0%
Flights flown
128
Months covered
12

Same route, other flights

Keep nerding

Based on 129 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.