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Flight Reliability

F9 4474 · Frontier Airlines

St. Louis → Atlanta (STL–ATL)

52
A Little Dicey
WanderNerd Reliability Score
63%
Arrive within 15 minutes
28 min
Average arrival delay
1.9%
Cancelled
2 min
Median arrival delay

Based on 159 historical flights. Data through May 2026.

What the data says

The 3–6 PM departure wins.

F9 4474 departing between 3–6 PM arrived on time 69% of the time, versus 54% between 12–3 PM.

Tuesdays have been rough.

F9 4474 arrived on time 81% of the time on Thursdays and just 40% on Tuesdays. That gap is worth planning around.

Well behind the STL–ATL route.

F9 4474 arrived on time 63% of the time, versus 86% across the STL–ATL route.

Lagging the Frontier Airlines network.

F9 4474 arrived on time 63% of the time, versus 73% across the Frontier Airlines network.

The breakdown

On-time by weekday
  • Mon40%(20 flights)
  • Tue40%(10 flights)
  • Wed73%(11 flights)
  • Thu81%(37 flights)
  • Fri57%(21 flights)
  • Sat62%(21 flights)
  • Sun63%(35 flights)
On-time by departure window
  • 9 AM–12 PM64%(42 flights)
  • 12–3 PM54%(41 flights)
  • 3–6 PM69%(35 flights)
  • 6–9 PM65%(37 flights)
On-time trend by month
57%
May

Jul 77% → May 57% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
July 202577%13
August 202554%13
September 202577%13
October 202577%13
November 202575%12
December 202562%13
January 202663%16
February 202681%16
March 202629%14
May 202657%14
Departures on time
65%
Diverted
0.6%
Flights flown
155
Months covered
12

Same route, other flights

Keep nerding

Based on 159 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.