Flight Reliability
F9 4307 · Frontier Airlines
Baltimore → Chicago (BWI–ORD)
21
Bring Snacks
WanderNerd Reliability Score
- 67%
- Arrive within 15 minutes
- 82 min
- Average arrival delay
- 3.0%
- Cancelled
- 6 min early
- Median arrival delay
Based on 67 historical flights. Data through May 2026.
What the data says
Morning flights do better here.
F9 4307 departing between 9 AM–12 PM arrived on time 77% of the time, versus 64% between 3–6 PM.
Mondays have been rough.
F9 4307 arrived on time 77% of the time on Fridays and just 60% on Mondays. That gap is worth planning around.
Lagging the BWI–ORD route.
F9 4307 arrived on time 67% of the time, versus 76% across the BWI–ORD route.
A bit behind the Frontier Airlines network.
F9 4307 arrived on time 67% of the time, versus 73% across the Frontier Airlines network.
The breakdown
- Mon60%(20 flights)
- Tue—(1 flights)
- Wed—(2 flights)
- Thu70%(10 flights)
- Fri77%(17 flights)
- Sat—(2 flights)
- Sun75%(12 flights)
- 6–9 AM—(3 flights)
- 9 AM–12 PM77%(13 flights)
- 12–3 PM—(9 flights)
- 3–6 PM64%(36 flights)
- 6–9 PM—(2 flights)
- 9 PM–12 AM—(1 flights)
- Departures on time
- 66%
- Diverted
- 1.5%
- Flights flown
- 64
- Months covered
- 7
Same route, other flights
Keep nerding
Based on 67 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.