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Flight Reliability

F9 2111 · Frontier Airlines

Philadelphia → Chicago (PHL–ORD)

34
Bring Snacks
WanderNerd Reliability Score
62%
Arrive within 15 minutes
48 min
Average arrival delay
4.2%
Cancelled
3 min early
Median arrival delay

Based on 168 historical flights. Data through May 2026.

What the data says

The 12–3 PM departure wins.

F9 2111 departing between 12–3 PM arrived on time 80% of the time, versus 35% between 6–9 PM.

Mondays have been rough.

F9 2111 arrived on time 82% of the time on Thursdays and just 51% on Mondays. That gap is worth planning around.

Lagging the PHL–ORD route.

F9 2111 arrived on time 62% of the time, versus 73% across the PHL–ORD route.

Lagging the Frontier Airlines network.

F9 2111 arrived on time 62% of the time, versus 73% across the Frontier Airlines network.

The breakdown

On-time by weekday
  • Mon51%(43 flights)
  • Tue—(1 flights)
  • Wed—(3 flights)
  • Thu82%(28 flights)
  • Fri55%(47 flights)
  • Sat—(8 flights)
  • Sun68%(31 flights)
On-time by departure window
  • 3–6 AM—(9 flights)
  • 6–9 AM73%(11 flights)
  • 9 AM–12 PM75%(47 flights)
  • 12–3 PM80%(10 flights)
  • 3–6 PM55%(60 flights)
  • 6–9 PM35%(20 flights)
  • 9 PM–12 AM—(4 flights)
On-time trend by month
75%
May

Jun 47% → May 75% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202547%15
August 202558%12
September 202575%16
October 202571%21
November 202567%15
December 202555%11
January 202664%14
April 202653%15
May 202675%20
Departures on time
65%
Diverted
0%
Flights flown
161
Months covered
12

Same route, other flights

Keep nerding

Based on 168 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.