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Flight Reliability

F9 2780 · Frontier Airlines

Chicago → Atlanta (MDW–ATL)

82
Pretty Reliable
WanderNerd Reliability Score
77%
Arrive within 15 minutes
5 min
Average arrival delay
0.7%
Cancelled
8 min early
Median arrival delay

Based on 143 historical flights. Data through May 2026.

What the data says

The 12–3 PM departure wins.

F9 2780 departing between 12–3 PM arrived on time 81% of the time, versus 67% between 3–6 PM.

Saturdays have been rough.

F9 2780 arrived on time 89% of the time on Wednesdays and just 64% on Saturdays. That gap is worth planning around.

A bit behind the MDW–ATL route.

F9 2780 arrived on time 77% of the time, versus 80% across the MDW–ATL route.

A bit ahead of the Frontier Airlines network.

F9 2780 arrived on time 77% of the time, versus 73% across the Frontier Airlines network.

The breakdown

On-time by weekday
  • Mon72%(25 flights)
  • Tue81%(16 flights)
  • Wed89%(18 flights)
  • Thu72%(25 flights)
  • Fri83%(23 flights)
  • Sat64%(14 flights)
  • Sun76%(21 flights)
On-time by departure window
  • 6–9 AM—(3 flights)
  • 9 AM–12 PM77%(17 flights)
  • 12–3 PM81%(104 flights)
  • 3–6 PM67%(15 flights)
  • 6–9 PM—(3 flights)
On-time trend by month
83%
May

Oct 80% → May 83% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
October 202580%10
November 202568%22
January 202671%21
February 202671%14
March 202671%17
April 202689%27
May 202683%29
Departures on time
81%
Diverted
0%
Flights flown
142
Months covered
8

Same route, other flights

Keep nerding

Based on 143 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.