Flight Reliability
F9 3173 · Frontier Airlines
Chicago → Denver (ORD–DEN)
51
A Little Dicey
WanderNerd Reliability Score
- 74%
- Arrive within 15 minutes
- 57 min
- Average arrival delay
- 1.9%
- Cancelled
- 1 min early
- Median arrival delay
Based on 54 historical flights. Data through May 2026.
What the data says
Morning flights do better here.
F9 3173 departing between 9 AM–12 PM arrived on time 81% of the time, versus 62% between 6–9 PM.
Sunday scaries are real for this one.
F9 3173 arrived on time 90% of the time on Fridays and just 65% on Sundays. That gap is worth planning around.
The breakdown
- Mon—(8 flights)
- Tue—(3 flights)
- Wed—(3 flights)
- Thu75%(12 flights)
- Fri90%(10 flights)
- Sat—(0 flights)
- Sun65%(17 flights)
- 6–9 AM—(1 flights)
- 9 AM–12 PM81%(37 flights)
- 3–6 PM—(1 flights)
- 6–9 PM62%(13 flights)
- 9 PM–12 AM—(1 flights)
- Departures on time
- 66%
- Diverted
- 0%
- Flights flown
- 53
- Months covered
- 8
Same route, other flights
Keep nerding
Based on 54 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.