Flight Reliability
F9 2144 · Frontier Airlines
Chicago → Atlanta (MDW–ATL)
78
Usually Fine
WanderNerd Reliability Score
- 70%
- Arrive within 15 minutes
- 10 min
- Average arrival delay
- 0%
- Cancelled
- 4 min early
- Median arrival delay
Based on 118 historical flights. Data through May 2026.
What the data says
The 3–6 PM departure wins.
F9 2144 departing between 3–6 PM arrived on time 73% of the time, versus 64% between 6–9 AM.
Tuesdays have been rough.
F9 2144 arrived on time 83% of the time on Mondays and just 59% on Tuesdays. That gap is worth planning around.
Lagging the MDW–ATL route.
F9 2144 arrived on time 70% of the time, versus 80% across the MDW–ATL route.
It basically never cancels.
Out of 118 scheduled flights, only 0.0% were cancelled.
The breakdown
- Mon83%(12 flights)
- Tue59%(17 flights)
- Wed67%(15 flights)
- Thu70%(23 flights)
- Fri77%(17 flights)
- Sat—(7 flights)
- Sun67%(27 flights)
- 6–9 AM64%(11 flights)
- 9 AM–12 PM64%(28 flights)
- 12–3 PM70%(30 flights)
- 3–6 PM73%(26 flights)
- 6–9 PM71%(14 flights)
- 9 PM–12 AM—(9 flights)
70%
Dec
Jun 53% → Dec 70% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 53% | 17 |
| July 2025 | 63% | 19 |
| August 2025 | 81% | 16 |
| September 2025 | 86% | 21 |
| October 2025 | 70% | 10 |
| December 2025 | 70% | 20 |
- Departures on time
- 73%
- Diverted
- 0%
- Flights flown
- 118
- Months covered
- 12
Same route, other flights
Keep nerding
Based on 118 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.