Flight Reliability
F9 4066 · Frontier Airlines
Seattle → Dallas–Fort Worth (SEA–DFW)
42
Bring Snacks
WanderNerd Reliability Score
- 49%
- Arrive within 15 minutes
- 40 min
- Average arrival delay
- 0%
- Cancelled
- 19 min
- Median arrival delay
Based on 37 historical flights. Data through May 2026.
What the data says
Monday comes out ahead.
A small edge: 50% on time on Mondays against 44% on Fridays.
Well behind the SEA–DFW route.
F9 4066 arrived on time 49% of the time, versus 77% across the SEA–DFW route.
Well behind the Frontier Airlines network.
F9 4066 arrived on time 49% of the time, versus 73% across the Frontier Airlines network.
The breakdown
- Mon50%(18 flights)
- Tue—(0 flights)
- Wed—(1 flights)
- Thu—(0 flights)
- Fri44%(16 flights)
- Sat—(0 flights)
- Sun—(2 flights)
- Departures on time
- 65%
- Diverted
- 0%
- Flights flown
- 37
- Months covered
- 6
Same route, other flights
Keep nerding
Based on 37 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.