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Flight Reliability

F9 4690 · Frontier Airlines

Ontario → Dallas–Fort Worth (ONT–DFW)

83
Pretty Reliable
WanderNerd Reliability Score
78%
Arrive within 15 minutes
6 min
Average arrival delay
0.8%
Cancelled
5 min early
Median arrival delay

Based on 130 historical flights. Data through May 2026.

What the data says

Morning-you made the right choice.

F9 4690 departing between 6–9 AM arrived on time 85% of the time, versus 66% between 3–6 PM.

Mondays have been rough.

F9 4690 arrived on time 88% of the time on Fridays and just 67% on Mondays. That gap is worth planning around.

A bit ahead of the Frontier Airlines network.

F9 4690 arrived on time 78% of the time, versus 73% across the Frontier Airlines network.

Ticking up lately.

F9 4690 arrived on time 81% of the time over the last three months in the data, compared with 76% in the three months before that.

The breakdown

On-time by weekday
  • Mon67%(21 flights)
  • Tue—(9 flights)
  • Wed87%(15 flights)
  • Thu86%(22 flights)
  • Fri88%(17 flights)
  • Sat70%(20 flights)
  • Sun68%(25 flights)
On-time by departure window
  • 6–9 AM85%(47 flights)
  • 9 AM–12 PM—(5 flights)
  • 12–3 PM78%(18 flights)
  • 3–6 PM66%(32 flights)
  • 6–9 PM82%(27 flights)
On-time trend by month
86%
May

Dec 81% → May 86% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
December 202581%16
January 202669%13
February 202678%18
March 202660%15
April 202696%28
May 202686%28
Departures on time
83%
Diverted
0%
Flights flown
129
Months covered
9

Same route, other flights

Keep nerding

Based on 130 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.