About 1 in 4 F9 1176 flights from Seattle arrived 15+ minutes late, diverted or cancelled over the past year (23%); 0.7% were cancelled. The typical flight landed 7 minutes early.
F9 1176: SEA → DEN
Scheduled to leave Seattle at 7:06 p.m. local time. Over the past year it arrived on time 77% of the time (155 flights), in line with other F9 flights on the route at that hour (77%). Last seen in the data Aug 31, 2026.
Usually Frontier Airlines's last flight of the day from Seattle to Denver (74% of days). Frontier Airlines's last SEA–DEN flight was cancelled 0.9% of the time, against 2.6% for its earlier ones. If it's cancelled, the next Frontier Airlines flight is usually around 2:22 p.m. the next morning.
Month by month
By day of week
| Day | Flights | On time |
|---|---|---|
| Monday | 23 | 78% |
| Tuesday | 20 | 60% |
| Wednesday | 23 | 70% |
| Thursday | 20 | 85% |
| Friday | 23 | 83% |
| Saturday | 23 | 87% |
| Sunday | 23 | 78% |
Why it was late
All flights SEA → DEN · Connecting off F9 1176? Check the risk
Questions
How often is F9 1176 from SEA to DEN late?
Frontier Airlines 1176 from Seattle, WA to Denver, CO arrived 15 or more minutes late, was diverted or was cancelled on 23% of 155 scheduled flights between September 2025 and August 2026. 0.7% were cancelled.
Flight numbers change. Figures cover flights with this airline, number and route only. "Likely range" is the 95% interval for the true on-time rate given the number of flights. This is history, not live status: check Frontier Airlines for today's flight. Method.