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Route · IAH → PHX · 2020–2025 BTS data

Houston to Phoenix

According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), IAH to PHX (Houston to Phoenix) ranks #636 of 4927 tracked domestic routes by total flights (most flights = #1).

Data updated 2026-06-13

82.4%
On-time
+3.4 pts
vs US avg
87 min
Delay when late
14,724
Flights
#636 of 4927
Corpus placement

Cancelled

1.2%

Best Month

Oct 2024 88%

Worst Month

Jun 2025 61%

Distance

1,009 mi

Carriers

41

Monthly Performance

Recent 24 months of route data.

Period Flights Delayed Cancelled Diverted Carriers
Dec 2025 270 34 0 0 F9,AA,MQ,UA,OO
Nov 2025 266 76 4 0 UA,F9,AA
Oct 2025 254 63 0 1 AA,UA,F9
Sep 2025 191 33 1 2 UA,F9,AA
Aug 2025 197 53 2 0 AA,F9,MQ,UA
Jul 2025 215 63 3 0 AA,UA,F9,MQ
Jun 2025 217 85 6 1 AA,OO,UA,F9,MQ
May 2025 285 69 2 0 AA,OO,UA,F9,MQ
Apr 2025 338 52 2 0 F9,MQ,OO,UA
Mar 2025 343 61 1 0 OO,UA,F9,MQ
Feb 2025 257 35 2 0 AA,OO,UA,F9,MQ
Jan 2025 228 41 8 0 AA,OO,UA,F9,MQ
Dec 2024 249 49 1 0 AA,F9,MQ,OO,UA
Nov 2024 229 29 1 0 OO,UA,MQ,F9,AA
Oct 2024 225 27 1 0 UA,OO,F9,AA
Sep 2024 192 34 0 0 OO,UA,AA,F9
Aug 2024 194 45 3 0 AA,F9,MQ,OO,UA
Jul 2024 206 78 18 2 AA,F9,MQ,OO,UA
Jun 2024 204 71 0 2 AA,F9,OO,UA
May 2024 214 73 4 0 AA,F9,OO,UA
Apr 2024 224 51 0 0 AA,F9,OO,UA
Mar 2024 235 52 1 1 AA,F9,OO,UA
Feb 2024 197 34 0 0 AA,F9,OO,UA
Jan 2024 210 43 5 0 F9,MQ,OO,UA

IAH–PHX seasonal on-time pattern

Best: February (86.4%) · weakest: June (70.4%)

65%70%75%80%85%90% JanFebMarAprMayJunJulAugSepOctNovDec 85.3%

Strongest calendar month

February

86.4% on-time · ~202 flights/mo

Busiest calendar month

March

~257 flights/mo avg

Weakest calendar month

June

70.4% on-time · ~174 flights/mo

Cancellation Rate

1.2%

65 of 5,640 flights

Diversion Rate

0.2%

9 of 5,640 flights

Explore origin & destination

On-time and delay data for the airports this route connects.

IAH - Houston

Full on-time, delay-cause, and seasonal performance for Houston, TX.

IAH on-time profile

PHX - Phoenix

Full on-time, delay-cause, and seasonal performance for Phoenix, AZ.

PHX on-time profile

Compare the two airports

See IAH and PHX side by side on delays, cancellations, and reliability.

Compare IAH vs PHX

Origin-hub reliability standing

Mid-pack among IAH departures

From IAH, this corridor sits with 79 other 75–85% on-time routes out of 102 tracked departures, not the hub's reliability leaders (17 at ≥85%) and not the softest ( 6 below 75%). Destination: Phoenix · fleet on-time rank #2188 of 4927.

What the Data Says About IAH to PHX

Bureau of Transportation Statistics records show Houston to Phoenix (IAH to PHX) running a 82.4% on-time rate over 14,724 tracked flights, on the stronger end of a typical domestic pairing. When flights do run late, the average delay is 86.6 minutes. The 1,009-mile corridor is served by 41 carriers, and over the last 24 months 1.2% of 5,640 flights were cancelled, 0.2% diverted.

The monthly split is wide on this route: Oct 2024 posted the strongest performance at 88% on-time, while Jun 2025 came in at just 61% - a 27-point swing worth factoring into travel timing.

On the multi-year calendar, IAH–PHX peaks in February at 86.4% on-time while March carries the heaviest traffic (~257 flights per month) ; the softest month is June at 70.4%, a 16.0-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.

Frequently Asked Questions

Where does IAH to PHX rank among US routes by traffic? ▼
According to PlainFlights' route traffic ranking, IAH to PHX ranks #636 of 4927 tracked domestic routes by total flights (most flights = #1). That ordinal matches our busiest-routes listing (total_flights DESC). See /methodology#corpus-placement for the exact sort basis.
How often are flights delayed from IAH to PHX? ▼
Flights from Houston to Phoenix have a 82.4% on-time rate based on 14,724 flights. The average delay is 86.6 minutes. The best recent month was Oct 2024 with 88% on-time.
What is the cancellation rate for IAH to PHX? ▼
Over the last 24 months, 1.2% of flights on this route were cancelled (65 of 5,640 flights) and 0.2% were diverted.
How far is the flight from IAH to PHX? ▼
The flight distance from Houston (IAH) to Phoenix (PHX) is approximately 1,009 miles. This route is served by 41 carriers.
When is the best time to fly from IAH to PHX? ▼
The best recent month for on-time performance was Oct 2024 (88% on-time). The worst was Jun 2025 (61% on-time). Consider booking during months with historically better performance.

Airports on this route

IAH Airport

Houston
PHX Airport

Phoenix
Data source

Data Source: Bureau of Transportation Statistics (BTS), On-Time Performance Data. Statistics reflect cumulative performance across all available reporting periods.

Read our methodology - how this data is sourced, computed, and verified.

Using IAH–PHX data

IAH–PHX runs 3.4 pts above the national 79% average; the remaining risk is month-to-month swing and carrier mix, not a weak headline rate.

  • Compare IAH and PHX airport profiles: delay causes and top routes differ even on the same corridor. IAH airport
  • If your dates flex, February (86.4% on-time) beats June (70.4%) on this corridor. Seasonal chart
  • 4 other routes post a similar 82.4% on-time rate; compare before you commit to this pairing. Similar routes

On-time rate reflects the BTS historical average across all reporting carriers on this origin–destination pair, not any single flight or booking recommendation.

Data sourced from U.S. Department of Transportation Bureau of Transportation Statistics (BTS) On-Time Performance data. See our methodology for details. Retrieved and formatted by PlainFlights

Every figure on PlainFlights is rendered directly from BTS On-Time Performance data, no number is typed in by an editor. This page aggregates this specific route's on-time performance and monthly trend, live from the dataset. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.