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Flight Reliability

F9 3135 · Frontier Airlines

Chicago → Houston (ORD–IAH)

73
Usually Fine
WanderNerd Reliability Score
77%
Arrive within 15 minutes
11 min
Average arrival delay
2.6%
Cancelled
10 min early
Median arrival delay

Based on 234 historical flights. Data through May 2026.

What the data says

Morning flights do better here.

F9 3135 departing between 3–6 AM arrived on time 86% of the time, versus 70% between 12–3 PM.

Sunday scaries are real for this one.

F9 3135 arrived on time 83% of the time on Tuesdays. On Sundays: 73%.

A bit ahead of the Frontier Airlines network.

F9 3135 arrived on time 77% of the time, versus 73% across the Frontier Airlines network.

Trending in the right direction.

F9 3135 arrived on time 83% of the time over the last three months in the data, compared with 74% in the three months before that.

The breakdown

On-time by weekday
  • Mon82%(38 flights)
  • Tue83%(12 flights)
  • Wed80%(10 flights)
  • Thu76%(45 flights)
  • Fri76%(46 flights)
  • Sat79%(24 flights)
  • Sun73%(52 flights)
On-time by departure window
  • 3–6 AM86%(29 flights)
  • 6–9 AM80%(99 flights)
  • 9 AM–12 PM—(4 flights)
  • 12–3 PM70%(33 flights)
  • 3–6 PM73%(59 flights)
  • 6–9 PM—(3 flights)
On-time trend by month
74%
May

Jun 69% → May 74% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202569%13
July 202565%17
August 202571%17
September 202582%17
October 202586%21
November 202576%21
December 202559%17
January 202682%11
February 202681%16
March 202690%20
April 202685%26
May 202674%31
Departures on time
74%
Diverted
0.4%
Flights flown
227
Months covered
12

Same route, other flights

Keep nerding

Based on 234 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.