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Flight Reliability

F9 1704 · Frontier Airlines

Phoenix → Houston (PHX–IAH)

80
Pretty Reliable
WanderNerd Reliability Score
82%
Arrive within 15 minutes
4 min
Average arrival delay
1.9%
Cancelled
8 min early
Median arrival delay

Based on 158 historical flights. Data through May 2026.

What the data says

The 3–6 AM departure wins.

F9 1704 departing between 3–6 AM arrived on time 88% of the time, versus 76% between 9 AM–12 PM.

Friday is doing you no favors.

F9 1704 arrived on time 92% of the time on Saturdays and just 65% on Fridays. That gap is worth planning around.

Better than the Frontier Airlines network average.

F9 1704 arrived on time 82% of the time, versus 73% across the Frontier Airlines network.

Ticking up lately.

F9 1704 arrived on time 85% of the time over the last three months in the data, compared with 82% in the three months before that.

The breakdown

On-time by weekday
  • Mon80%(30 flights)
  • Tue—(6 flights)
  • Wed—(6 flights)
  • Thu85%(27 flights)
  • Fri65%(26 flights)
  • Sat92%(25 flights)
  • Sun88%(34 flights)
On-time by departure window
  • 3–6 AM88%(32 flights)
  • 6–9 AM82%(62 flights)
  • 9 AM–12 PM76%(50 flights)
  • 12–3 PM—(6 flights)
  • 3–6 PM—(4 flights)
On-time trend by month
76%
May

Jun 60% → May 76% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202560%10
July 202588%16
August 202575%12
September 2025100%15
January 202670%10
March 202686%22
April 202694%16
May 202676%29
Departures on time
85%
Diverted
0.6%
Flights flown
154
Months covered
11

Same route, other flights

Keep nerding

Based on 158 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.