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Flight Reliability

F9 1877 · Frontier Airlines

Austin → San Diego (AUS–SAN)

58
A Little Dicey
WanderNerd Reliability Score
71%
Arrive within 15 minutes
21 min
Average arrival delay
3.7%
Cancelled
2 min early
Median arrival delay

Based on 134 historical flights. Data through May 2026.

What the data says

The 3–6 PM departure wins.

F9 1877 departing between 3–6 PM arrived on time 82% of the time, versus 55% between 6–9 PM.

Sunday scaries are real for this one.

F9 1877 arrived on time 90% of the time on Wednesdays and just 52% on Sundays. That gap is worth planning around.

A bit behind the AUS–SAN route.

F9 1877 arrived on time 71% of the time, versus 76% across the AUS–SAN route.

Keep a backup plan handy.

F9 1877 was cancelled 3.7% of the time. Typical for U.S. flights is around 1–2%.

The breakdown

On-time by weekday
  • Mon74%(35 flights)
  • Tue—(0 flights)
  • Wed90%(10 flights)
  • Thu85%(13 flights)
  • Fri69%(39 flights)
  • Sat—(5 flights)
  • Sun52%(27 flights)
On-time by departure window
  • 12–3 PM79%(63 flights)
  • 3–6 PM82%(17 flights)
  • 6–9 PM55%(49 flights)
On-time trend by month
100%
Mar

Jul 50% → Mar 100% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
July 202550%16
August 202553%15
September 202592%13
October 202571%17
November 202569%16
December 202582%11
January 202690%10
March 2026100%10
Departures on time
72%
Diverted
0%
Flights flown
129
Months covered
11

Same route, other flights

Keep nerding

Based on 134 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.