Flight Reliability
F9 2399 · Frontier Airlines
Atlanta → Houston (ATL–IAH)
76
Usually Fine
WanderNerd Reliability Score
- 72%
- Arrive within 15 minutes
- 10 min
- Average arrival delay
- 1.1%
- Cancelled
- 4 min early
- Median arrival delay
Based on 87 historical flights. Data through May 2026.
What the data says
Morning-you made the right choice.
F9 2399 departing between 6–9 AM arrived on time 81% of the time, versus 63% between 3–6 PM.
Saturdays have been rough.
F9 2399 arrived on time 92% of the time on Fridays and just 55% on Saturdays. That gap is worth planning around.
A bit behind the ATL–IAH route.
F9 2399 arrived on time 72% of the time, versus 76% across the ATL–IAH route.
The breakdown
- Mon73%(11 flights)
- Tue60%(10 flights)
- Wed—(8 flights)
- Thu85%(13 flights)
- Fri92%(12 flights)
- Sat55%(20 flights)
- Sun75%(12 flights)
- 6–9 AM81%(43 flights)
- 9 AM–12 PM69%(16 flights)
- 12–3 PM—(1 flights)
- 3–6 PM63%(24 flights)
- 6–9 PM—(2 flights)
86%
May
Nov 91% → May 86% on time
| Month | On-time percentage | Flights |
|---|---|---|
| November 2025 | 91% | 11 |
| April 2026 | 75% | 20 |
| May 2026 | 86% | 22 |
- Departures on time
- 71%
- Diverted
- 0%
- Flights flown
- 86
- Months covered
- 9
Same route, other flights
Keep nerding
Based on 87 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.