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Flight Reliability

F9 3351 · Frontier Airlines

Raleigh–Durham → Chicago (RDU–ORD)

18
Bring Snacks
WanderNerd Reliability Score
56%
Arrive within 15 minutes
52 min
Average arrival delay
5.6%
Cancelled
7 min
Median arrival delay

Based on 143 historical flights. Data through May 2026.

What the data says

The 12–3 PM departure wins.

F9 3351 departing between 12–3 PM arrived on time 100% of the time, versus 50% between 9 PM–12 AM.

Mondays have been rough.

F9 3351 arrived on time 63% of the time on Fridays and just 47% on Mondays. That gap is worth planning around.

Well behind the RDU–ORD route.

F9 3351 arrived on time 56% of the time, versus 75% across the RDU–ORD route.

Well behind the Frontier Airlines network.

F9 3351 arrived on time 56% of the time, versus 73% across the Frontier Airlines network.

The breakdown

On-time by weekday
  • Mon47%(34 flights)
  • Tue—(3 flights)
  • Wed—(1 flights)
  • Thu59%(32 flights)
  • Fri63%(27 flights)
  • Sat—(1 flights)
  • Sun58%(36 flights)
On-time by departure window
  • 9 AM–12 PM50%(12 flights)
  • 12–3 PM100%(12 flights)
  • 3–6 PM52%(86 flights)
  • 6–9 PM—(2 flights)
  • 9 PM–12 AM50%(22 flights)
On-time trend by month
31%
Apr

Jun 35% → Apr 31% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202535%17
July 202556%16
August 202557%14
September 202592%13
October 202573%11
November 202553%17
December 202530%10
April 202631%13
Departures on time
64%
Diverted
0.7%
Flights flown
134
Months covered
12

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.