Flight Reliability
F9 2779 · Frontier Airlines
Atlanta → Chicago (ATL–MDW)
37
Bring Snacks
WanderNerd Reliability Score
- 56%
- Arrive within 15 minutes
- 43 min
- Average arrival delay
- 1.7%
- Cancelled
- 7 min
- Median arrival delay
Based on 287 historical flights. Data through May 2026.
What the data says
Morning-you made the right choice.
F9 2779 departing between 9 AM–12 PM arrived on time 80% of the time, versus 56% between 9 PM–12 AM.
Mondays have been rough.
F9 2779 arrived on time 66% of the time on Fridays and just 44% on Mondays. That gap is worth planning around.
Well behind the ATL–MDW route.
F9 2779 arrived on time 56% of the time, versus 77% across the ATL–MDW route.
Well behind the Frontier Airlines network.
F9 2779 arrived on time 56% of the time, versus 73% across the Frontier Airlines network.
The breakdown
- Mon44%(50 flights)
- Tue64%(14 flights)
- Wed50%(18 flights)
- Thu61%(49 flights)
- Fri66%(50 flights)
- Sat57%(47 flights)
- Sun53%(51 flights)
- 9 AM–12 PM80%(10 flights)
- 6–9 PM—(9 flights)
- 9 PM–12 AM56%(260 flights)
63%
May
Jun 27% → May 63% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 27% | 22 |
| July 2025 | 38% | 21 |
| August 2025 | 41% | 22 |
| September 2025 | 81% | 21 |
| October 2025 | 82% | 22 |
| November 2025 | 48% | 23 |
| December 2025 | 54% | 24 |
| January 2026 | 60% | 25 |
| February 2026 | 53% | 19 |
| March 2026 | 50% | 22 |
| April 2026 | 71% | 28 |
| May 2026 | 63% | 30 |
- Departures on time
- 52%
- Diverted
- 1.0%
- Flights flown
- 279
- Months covered
- 12
Same route, other flights
Keep nerding
Based on 287 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.