Flight Reliability
F9 3899 · Frontier Airlines
Tampa → Chicago (TPA–MDW)
70
Usually Fine
WanderNerd Reliability Score
- 75%
- Arrive within 15 minutes
- 7 min
- Average arrival delay
- 3.2%
- Cancelled
- 15 min early
- Median arrival delay
Based on 62 historical flights. Data through May 2026.
What the data says
Morning-you made the right choice.
F9 3899 departing between 9 AM–12 PM arrived on time 94% of the time, versus 59% between 6–9 PM.
Thursdays have been rough.
F9 3899 arrived on time 85% of the time on Fridays and just 64% on Thursdays. That gap is worth planning around.
The breakdown
- Mon77%(13 flights)
- Tue—(0 flights)
- Wed—(0 flights)
- Thu64%(11 flights)
- Fri85%(13 flights)
- Sat—(0 flights)
- Sun74%(23 flights)
- 9 AM–12 PM94%(18 flights)
- 12–3 PM—(8 flights)
- 3–6 PM—(7 flights)
- 6–9 PM59%(22 flights)
- 9 PM–12 AM—(5 flights)
92%
Oct
Aug 80% → Oct 92% on time
| Month | On-time percentage | Flights |
|---|---|---|
| August 2025 | 80% | 10 |
| September 2025 | 92% | 13 |
| October 2025 | 92% | 13 |
- Departures on time
- 70%
- Diverted
- 0%
- Flights flown
- 60
- Months covered
- 6
Same route, other flights
Keep nerding
Based on 62 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.