Flight Reliability
F9 1176 · Frontier Airlines
Seattle → Denver (SEA–DEN)
64
A Little Dicey
WanderNerd Reliability Score
- 73%
- Arrive within 15 minutes
- 25 min
- Average arrival delay
- 2.4%
- Cancelled
- 1 min early
- Median arrival delay
Based on 125 historical flights. Data through May 2026.
What the data says
Sunday scaries are real for this one.
F9 1176 arrived on time 85% of the time on Mondays and just 57% on Sundays. That gap is worth planning around.
A bit behind the SEA–DEN route.
F9 1176 arrived on time 73% of the time, versus 78% across the SEA–DEN route.
Trending in the right direction.
F9 1176 arrived on time 84% of the time over the last three months in the data, compared with 60% in the three months before that.
The breakdown
- Mon85%(20 flights)
- Tue—(7 flights)
- Wed70%(10 flights)
- Thu74%(19 flights)
- Fri76%(21 flights)
- Sat77%(22 flights)
- Sun57%(23 flights)
- 12–3 PM—(2 flights)
- 3–6 PM—(7 flights)
- 6–9 PM76%(113 flights)
90%
May
Jun 65% → May 90% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 65% | 20 |
| July 2025 | 61% | 18 |
| August 2025 | 55% | 22 |
| October 2025 | 86% | 14 |
| April 2026 | 77% | 17 |
| May 2026 | 90% | 31 |
- Departures on time
- 68%
- Diverted
- 0%
- Flights flown
- 122
- Months covered
- 6
Same route, other flights
Keep nerding
Based on 125 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.