Flight Reliability
F9 1855 · Frontier Airlines
Chicago → San Diego (ORD–SAN)
31
Bring Snacks
WanderNerd Reliability Score
- 48%
- Arrive within 15 minutes
- 50 min
- Average arrival delay
- 1.2%
- Cancelled
- 21 min
- Median arrival delay
Based on 81 historical flights. Data through May 2026.
What the data says
Morning-you made the right choice.
F9 1855 departing between 6–9 AM arrived on time 85% of the time, versus 40% between 12–3 PM.
Sunday scaries are real for this one.
F9 1855 arrived on time 60% of the time on Saturdays and just 25% on Sundays. That gap is worth planning around.
Well behind the ORD–SAN route.
F9 1855 arrived on time 48% of the time, versus 73% across the ORD–SAN route.
Well behind the Frontier Airlines network.
F9 1855 arrived on time 48% of the time, versus 73% across the Frontier Airlines network.
The breakdown
- Mon39%(13 flights)
- Tue—(9 flights)
- Wed—(9 flights)
- Thu57%(14 flights)
- Fri39%(13 flights)
- Sat60%(10 flights)
- Sun25%(12 flights)
- 6–9 AM85%(13 flights)
- 12–3 PM40%(67 flights)
60%
Aug
Jun 28% → Aug 60% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 28% | 18 |
| July 2025 | 39% | 31 |
| August 2025 | 60% | 25 |
- Departures on time
- 53%
- Diverted
- 0%
- Flights flown
- 80
- Months covered
- 4
Same route, other flights
Keep nerding
Based on 81 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.