Flight Reliability
F9 1588 · Frontier Airlines
Denver → Tulsa (DEN–TUL)
85
Pretty Reliable
WanderNerd Reliability Score
- 77%
- Arrive within 15 minutes
- 9 min
- Average arrival delay
- 0%
- Cancelled
- 9 min early
- Median arrival delay
Based on 43 historical flights. Data through May 2026.
What the data says
Sunday scaries are real for this one.
F9 1588 arrived on time 83% of the time on Thursdays and just 67% on Sundays. That gap is worth planning around.
A bit ahead of the Frontier Airlines network.
F9 1588 arrived on time 77% of the time, versus 73% across the Frontier Airlines network.
The breakdown
- Mon—(0 flights)
- Tue—(4 flights)
- Wed—(0 flights)
- Thu83%(18 flights)
- Fri—(0 flights)
- Sat—(0 flights)
- Sun67%(21 flights)
- 9 AM–12 PM77%(13 flights)
- 12–3 PM—(1 flights)
- 3–6 PM76%(29 flights)
- Departures on time
- 79%
- Diverted
- 0%
- Flights flown
- 43
- Months covered
- 7
Same route, other flights
Keep nerding
Based on 43 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.