Route on-time record

IAH to PHX: most on-time flights and the best time to fly

Houston (George Bush Intercontinental Airport) to Phoenix (Phoenix Sky Harbor International Airport). 2,912 nonstop flights in Jun 2025 to May 2026, 78% arrived within 15 minutes and 1.0% were cancelled. The most reliable flight number was United 2614 at 7:35 AM.

Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.

IAH → PHX

Houston to Phoenix: 2,912 nonstop flights a year

On time (12 months)

78%

Cancelled

1.0%

avg delay 19 min

Best time to leave

Before 9 AM

88% on time vs 64% after 9 PM

Most reliable airline

American

81% chance on time

Check IAH to PHX fares

Fares open on our travel partner (Aviasales). Pick the flight number you chose here.

Most reliable nonstop flights

Ranked by the chance the flight operates and arrives within 15 minutes of schedule, from Jun 2025 to May 2026 records.

#1 · United 2614
7:35 AM → 8:37 AM3h 02m nonstop
Local times, typical schedule. Last flown 2026-05-20.
93%
chance on time
On time (history)
94%
Cancelled
0.0%
Avg arrival delay
3 min
- Arrived on time 94% of the time (174 flights, Jun 2025 to May 2026).
- Never cancelled in 174 scheduled flights.
- Leaves in this route's most on-time window (Before 9 AM: 88% on time; After 9 PM: 64%).
- Departs outside IAH's trouble window (noon to 6 PM, when 60% of its 92 ground stops and delay programs started).
Moderate track record · 174 flights
Find United 2614 fares Opens this date on Aviasales
#2 · United 1418
5:05 PM → 6:06 PM3h 01m nonstop
Local times, typical schedule. Last flown 2026-05-20. Same departure also flew as United 1358, 2617; its record covers all of them.
88%
chance on time
On time (history)
91%
Cancelled
0.0%
Avg arrival delay
11 min
- Arrived on time 91% of the time (88 flights, Jun 2025 to May 2026).
- Never cancelled in 88 scheduled flights.
- Departs inside IAH's trouble window: 60% of its 92 ground stops and delay programs started between noon and 6 PM.
- Lands inside PHX's trouble window: 43% of its 46 ground stops and delay programs started between 2 PM and 8 PM.
Moderate track record · 88 flights
Find United 1418 fares Opens this date on Aviasales
#3 · American 1937
8:31 AM → 9:28 AM2h 57m nonstop
Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as American 2138; its record covers all of them.
86%
chance on time
On time (history)
85%
Cancelled
0.0%
Avg arrival delay
35 min
- Arrived on time 85% of the time (99 flights, Jun 2025 to May 2026).
- Never cancelled in 99 scheduled flights.
- Leaves in this route's most on-time window (Before 9 AM: 88% on time; After 9 PM: 64%).
- Departs outside IAH's trouble window (noon to 6 PM, when 60% of its 92 ground stops and delay programs started).
Moderate track record · 99 flights
Find American 1937 fares Opens this date on Aviasales
#4 · Envoy 3370 · sold as American Eagle
8:15 AM → 9:15 AM3h 00m nonstop
Local times, typical schedule. Last flown 2026-05-20.
85%
chance on time
On time (history)
92%
Cancelled
0.0%
Avg arrival delay
8 min
- Arrived on time 92% of the time (13 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 88% on time; After 9 PM: 64%).
- Departs outside IAH's trouble window (noon to 6 PM, when 60% of its 92 ground stops and delay programs started).
- Short track record (13 flights), so its score leans on the airline's record at this hour.
Limited track record · 13 flights
Find 8:15 AM flight fares Opens this date on Aviasales
#5 · United 1895
10:06 AM → 11:09 AM3h 03m nonstop
Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as United 1380; its record covers all of them.
84%
chance on time
On time (history)
84%
Cancelled
0.6%
Avg arrival delay
11 min
- Arrived on time 84% of the time (327 flights, Jun 2025 to May 2026).
- Departs outside IAH's trouble window (noon to 6 PM, when 60% of its 92 ground stops and delay programs started).
Strong track record · 327 flights
Find United 1895 fares Opens this date on Aviasales
#6 · United 1798
1:14 PM → 2:17 PM3h 03m nonstop
Local times, typical schedule. Last flown 2026-05-31.
82%
chance on time
On time (history)
83%
Cancelled
0.3%
Avg arrival delay
12 min
- Arrived on time 83% of the time (300 flights, Jun 2025 to May 2026).
- Departs inside IAH's trouble window: 60% of its 92 ground stops and delay programs started between noon and 6 PM.
- Lands inside PHX's trouble window: 43% of its 46 ground stops and delay programs started between 2 PM and 8 PM.
Strong track record · 300 flights
Find United 1798 fares Opens this date on Aviasales
#7 · United 2319
12:25 PM → 1:34 PM3h 09m nonstop
Local times, typical schedule. Last flown 2026-03-28.
80%
chance on time
On time (history)
79%
Cancelled
0.0%
Avg arrival delay
16 min
- Arrived on time 79% of the time (24 flights, Jun 2025 to May 2026).
- Departs inside IAH's trouble window: 60% of its 92 ground stops and delay programs started between noon and 6 PM.
- Short track record (24 flights), so its score leans on the airline's record at this hour.
Limited track record · 24 flights
Find United 2319 fares Opens this date on Aviasales
#8 · American 3076
2:03 PM → 2:59 PM2h 56m nonstop
Local times, typical schedule. Last flown 2026-05-20.
78%
chance on time
On time (history)
77%
Cancelled
0.0%
Avg arrival delay
23 min
- Arrived on time 77% of the time (44 flights, Jun 2025 to May 2026).
- Never cancelled in 44 scheduled flights.
- Departs inside IAH's trouble window: 60% of its 92 ground stops and delay programs started between noon and 6 PM.
- Lands inside PHX's trouble window: 43% of its 46 ground stops and delay programs started between 2 PM and 8 PM.
Limited track record · 44 flights
Find American 3076 fares Opens this date on Aviasales
#9 · American 2081
8:08 AM → 9:10 AM3h 02m nonstop
Local times, typical schedule. Last flown 2026-04-06.
75%
chance on time
On time (history)
66%
Cancelled
3.3%
Avg arrival delay
12 min
- Arrived on time 66% of the time (29 flights, Jun 2025 to May 2026).
- Cancelled 3.3% of the time (1 of 30).
- Leaves in this route's most on-time window (Before 9 AM: 88% on time; After 9 PM: 64%).
- Departs outside IAH's trouble window (noon to 6 PM, when 60% of its 92 ground stops and delay programs started).
Limited track record · 29 flights
Find American 2081 fares Opens this date on Aviasales
#10 · SkyWest 4904 · sold as United Express, Delta Connection, American Eagle or Alaska
2:40 PM → 3:54 PM3h 14m nonstop
Local times, typical schedule. Last flown 2026-04-06.
72%
chance on time
On time (history)
80%
Cancelled
4.3%
Avg arrival delay
19 min
- Arrived on time 80% of the time (45 flights, Jun 2025 to May 2026).
- Cancelled 4.3% of the time (2 of 47).
- Departs inside IAH's trouble window: 60% of its 92 ground stops and delay programs started between noon and 6 PM.
- Lands inside PHX's trouble window: 43% of its 46 ground stops and delay programs started between 2 PM and 8 PM.
Limited track record · 45 flights
Find 2:40 PM flight fares Opens this date on Aviasales

Airlines on this route

Season-adjusted chance of operating and arriving on time.

American Airlines81%
577 flights · 82% on time as flown · 1.3% cancel
United Airlines79%
1,791 flights · 79% on time as flown · 0.5% cancel
Envoy Air (sold as American Eagle)78%
97 flights · 77% on time as flown · 1.8% cancel
Frontier Airlines67%
265 flights · 66% on time as flown · 1.3% cancel
SkyWest Airlines (sold as United Express, Delta Connection, American Eagle or Alaska)67%
182 flights · 69% on time as flown · 2.0% cancel

On time by departure time

All airlines, scheduled local departure, Jun 2025 to May 2026.

Before 9 AM88%
534 flights · avg delay 20 min
9 AM to noon84%
403 flights · avg delay 11 min
Noon to 3 PM79%
879 flights · avg delay 18 min
3 to 6 PM81%
359 flights · avg delay 14 min
6 to 9 PM66%
636 flights · avg delay 25 min
After 9 PM64%
101 flights · avg delay 25 min

Best day: Tuesday (84%). Worst: Sunday (76%).

On time by month

All airlines, Jun 2023 to May 2026. Several years per month, so one stormy season doesn't define a month. Travel-month estimates use this seasonal pattern.

What delays this route

Late-arriving aircraft40%
Airline (crew, maintenance, boarding)35%
Air traffic control and airport volume15%
Severe weather10%

Share of delay minutes by the cause airlines report to the US DOT.

Historical odds, not a guarantee. Built from the US DOT Bureau of Transportation Statistics on-time reports (Jun 2025 to May 2026), FAA ground stop and delay program advisories, and 20 years of airport weather observations. Covers US airlines that report to the DOT; schedules are flights operated recently, so confirm times when you book. ATIS Alerts is not affiliated with any airline. Fares are what Aviasales travelers saw in recent searches (USD, one way, 1 adult), not live quotes; the partner site shows the current price. Fare links go to our travel partner and may earn us a commission at no cost to you. Affiliate disclosure

IAH to PHX questions

What time of day is best to fly IAH to PHX?: Before 9 AM: 88% of flights arrived on time, against 64% for departures after 9 PM. Later flights inherit delays from earlier ones, so the first departures of the day usually run best.
Which airline is most on time from IAH to PHX?: American, with a season-adjusted 81% chance of operating and arriving on time over 577 flights. The adjustment compares each airline with what the route did in the months it flew, so a carrier that skipped a stormy month gets no free credit.
What is the worst month for delays on IAH to PHX?: June (65% on time); the best was February (87%), averaged over Jun 2023 to May 2026.
Is this a prediction for my flight?: No. These are historical odds from the US DOT on-time reports, FAA advisories and airport weather records. Check your flight status and the FAA delay board on the day you fly.

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