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Route Reliability

Phoenix → Houston

PHX–IAH · 1,009 miles · Phoenix Sky Harbor International Airport to George Bush Intercontinental Airport

84
Pretty Reliable
WanderNerd Reliability Score
82%
Arrive within 15 minutes
8 min
Average arrival delay
1.1%
Cancelled
2,912
Flights in the data

Data through May 2026.

Who flies it best

Ranked by on-time arrivals. Historical results, not predictions.

  1. 1.United Airlines85%1,788 flights
  2. 2.Frontier Airlines78%265 flights
  3. 3.American Airlines77%859 flights

What the data says

Morning-you made the right choice.

PHX–IAH flights departing between 6–9 AM arrived on time 88% of the time, versus 73% between 6–9 PM.

Friday is doing you no favors.

PHX–IAH flights arrived on time 86% of the time on Wednesdays. On Fridays: 78%.

United Airlines runs this route best.

United Airlines arrived on time 85% of the time on this route; American Airlines managed 77%.

Recent months have been rougher.

PHX–IAH flights arrived on time 80% of the time over the last three months in the data, compared with 90% in the three months before that.

Best historical flights

Ranked by on-time arrivals, minimum 100 flights. Past performance, not a promise.

Top flights by on-time rate

More flights on this route

The breakdown

On-time by weekday
  • Mon79%(442 flights)
  • Tue86%(348 flights)
  • Wed86%(359 flights)
  • Thu84%(443 flights)
  • Fri78%(430 flights)
  • Sat85%(388 flights)
  • Sun78%(457 flights)
On-time by departure window
  • 12–3 AM—(1 flights)
  • 3–6 AM88%(32 flights)
  • 6–9 AM88%(770 flights)
  • 9 AM–12 PM87%(641 flights)
  • 12–3 PM79%(531 flights)
  • 3–6 PM77%(513 flights)
  • 6–9 PM73%(379 flights)
On-time trend by month
82%
May

Jun 72% → May 82% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202572%210
July 202575%208
August 202580%193
September 202587%189
October 202580%253
November 202579%262
December 202590%266
January 202690%247
February 202690%243
March 202675%293
April 202684%246
May 202682%257

Same trip, other airports

Keep nerding

Based on 2,912 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.