Flight Reliability
F9 1398 · Frontier Airlines
Houston → Chicago (IAH–MDW)
36
Bring Snacks
WanderNerd Reliability Score
- 58%
- Arrive within 15 minutes
- 46 min
- Average arrival delay
- 3.1%
- Cancelled
- 10 min
- Median arrival delay
Based on 32 historical flights. Data through May 2026.
What the data says
Lagging the IAH–MDW route.
F9 1398 arrived on time 58% of the time, versus 71% across the IAH–MDW route.
Lagging the Frontier Airlines network.
F9 1398 arrived on time 58% of the time, versus 73% across the Frontier Airlines network.
The breakdown
- Mon—(8 flights)
- Tue—(1 flights)
- Wed—(3 flights)
- Thu—(0 flights)
- Fri100%(11 flights)
- Sat—(1 flights)
- Sun—(7 flights)
- 12–3 PM—(2 flights)
- 6–9 PM54%(28 flights)
- 9 PM–12 AM—(1 flights)
- Departures on time
- 52%
- Diverted
- 0%
- Flights flown
- 31
- Months covered
- 5
Same route, other flights
Keep nerding
Based on 32 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.