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Flight Reliability

F9 4202 · Frontier Airlines

San Francisco → Santa Ana (SFO–SNA)

69
Usually Fine
WanderNerd Reliability Score
69%
Arrive within 15 minutes
12 min
Average arrival delay
1.6%
Cancelled
1 min
Median arrival delay

Based on 129 historical flights. Data through May 2026.

What the data says

Morning flights do better here.

F9 4202 departing between 6–9 AM arrived on time 100% of the time, versus 50% between 6–9 PM.

Monday is the weak spot.

F9 4202 arrived on time 73% of the time on Fridays. On Mondays: 58%.

Lagging the SFO–SNA route.

F9 4202 arrived on time 69% of the time, versus 82% across the SFO–SNA route.

A bit behind the Frontier Airlines network.

F9 4202 arrived on time 69% of the time, versus 73% across the Frontier Airlines network.

The breakdown

On-time by weekday
  • Mon58%(31 flights)
  • Tue—(0 flights)
  • Wed—(1 flights)
  • Thu71%(28 flights)
  • Fri73%(33 flights)
  • Sat—(7 flights)
  • Sun70%(27 flights)
On-time by departure window
  • 6–9 AM100%(11 flights)
  • 9 AM–12 PM86%(21 flights)
  • 12–3 PM61%(54 flights)
  • 3–6 PM66%(29 flights)
  • 6–9 PM50%(12 flights)
On-time trend by month
53%
Apr

Jun 47% → Apr 53% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202547%15
July 202569%16
August 202578%18
November 202582%11
December 202582%11
April 202653%15
Departures on time
65%
Diverted
0%
Flights flown
127
Months covered
11

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.