Route on-time record

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

Houston (George Bush Intercontinental Airport) to Dallas-Fort Worth (Dallas Fort Worth International Airport). 5,773 nonstop flights in Jun 2025 to May 2026, 75% arrived within 15 minutes and 2.9% were cancelled. The most reliable flight number was American 2551 at 5:00 AM.

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

IAH → DFW

Houston to Dallas-Fort Worth: 5,773 nonstop flights a year

On time (12 months)

75%

Cancelled

2.9%

avg delay 26 min

Best time to leave

Before 9 AM

83% on time vs 64% 6 to 9 PM

Most reliable airline

Envoy

75% chance on time

Check IAH to DFW fares

Lowest nonstop fare seen in the next two months: $101 (American 2551 on 2026-10-24). 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 · American 2551
5:00 AM → 6:17 AM1h 17m nonstop
Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as American 2432; its record covers all of them.
84%
chance on time
On time (history)
87%
Cancelled
3.8%
Avg arrival delay
28 min
- Arrived on time 87% of the time (459 flights, Jun 2025 to May 2026).
- Cancelled 3.8% of the time (18 of 479).
- Leaves in this route's most on-time window (Before 9 AM: 83% on time; 6 to 9 PM: 64%).
- Departs outside IAH's trouble window (noon to 6 PM, when 60% of its 92 ground stops and delay programs started).
Strong track record · 459 flights
Find American 2551 fares Opens this date on Aviasales
#2 · United 358
7:20 AM → 8:47 AM1h 27m nonstop
Local times, typical schedule. Last flown 2026-05-31.
83%
chance on time
On time (history)
87%
Cancelled
0.7%
Avg arrival delay
9 min
- Arrived on time 87% of the time (141 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 83% on time; 6 to 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 · 141 flights
Find United 358 fares Opens this date on Aviasales
#3 · United 1117
10:08 PM → 11:32 PM1h 24m nonstop
Local times, typical schedule. Last flown 2026-05-20. Same departure also flew as United 1269; its record covers all of them.
82%
chance on time
On time (history)
87%
Cancelled
1.9%
Avg arrival delay
9 min
- Arrived on time 87% of the time (52 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).
- Short track record (52 flights), so its score leans on the airline's record at this hour.
Limited track record · 52 flights
Find United 1117 fares Opens this date on Aviasales
#4 · American 700
6:00 AM → 7:21 AM1h 21m nonstop
Local times, typical schedule. Last flown 2026-05-31.
81%
chance on time
On time (history)
83%
Cancelled
4.8%
Avg arrival delay
31 min
- Arrived on time 83% of the time (199 flights, Jun 2025 to May 2026).
- Cancelled 4.8% of the time (10 of 209).
- Leaves in this route's most on-time window (Before 9 AM: 83% on time; 6 to 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 · 199 flights
Find American 700 fares Opens this date on Aviasales
#5 · United 1288
9:55 PM → 11:15 PM1h 20m nonstop
Local times, typical schedule. Last flown 2026-03-28.
80%
chance on time
On time (history)
91%
Cancelled
8.3%
Avg arrival delay
11 min
- Arrived on time 91% of the time (22 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).
- Short track record (22 flights), so its score leans on the airline's record at this hour.
Limited track record · 22 flights
Find United 1288 fares Opens this date on Aviasales
#6 · American 1239
7:20 AM → 8:50 AM1h 30m nonstop
Local times, typical schedule. Last flown 2026-05-20.
79%
chance on time
On time (history)
84%
Cancelled
0.0%
Avg arrival delay
16 min
- Arrived on time 84% of the time (44 flights, Jun 2025 to May 2026).
- Never cancelled in 44 scheduled flights.
- Leaves in this route's most on-time window (Before 9 AM: 83% on time; 6 to 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 · 44 flights
Find American 1239 fares Opens this date on Aviasales
#7 · Envoy 3591 · sold as American Eagle
11:24 AM → 12:51 PM1h 27m nonstop
Local times, typical schedule. Last flown 2026-05-31.
79%
chance on time
On time (history)
73%
Cancelled
0.0%
Avg arrival delay
7 min
- Arrived on time 73% of the time (11 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).
- Short track record (11 flights), so its score leans on the airline's record at this hour.
Limited track record · 11 flights
Find 11:24 AM flight fares Opens this date on Aviasales
#8 · United 584
11:55 AM → 1:17 PM1h 23m nonstop
Local times, typical schedule. Last flown 2026-05-20.
78%
chance on time
On time (history)
82%
Cancelled
2.4%
Avg arrival delay
13 min
- Arrived on time 82% of the time (164 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).
- Lands inside DFW's trouble window: 53% of its 139 ground stops and delay programs started between 1 PM and 7 PM.
Moderate track record · 164 flights
Find United 584 fares Opens this date on Aviasales
#9 · United 2074
10:56 AM → 12:23 PM1h 26m nonstop
Local times, typical schedule. Last flown 2026-05-31.
77%
chance on time
On time (history)
79%
Cancelled
0.0%
Avg arrival delay
16 min
- Arrived on time 79% of the time (92 flights, Jun 2025 to May 2026).
- Never cancelled in 92 scheduled flights.
- Departs outside IAH's trouble window (noon to 6 PM, when 60% of its 92 ground stops and delay programs started).
Moderate track record · 92 flights
Find United 2074 fares Opens this date on Aviasales
#10 · American 3193
9:28 AM → 10:55 AM1h 27m nonstop
Local times, typical schedule. Last flown 2026-05-31.
77%
chance on time
On time (history)
78%
Cancelled
0.0%
Avg arrival delay
7 min
- Arrived on time 78% of the time (9 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).
- Short track record (9 flights), so its score leans on the airline's record at this hour.
Limited track record · 9 flights
Find American 3193 fares Opens this date on Aviasales

Airlines on this route

Season-adjusted chance of operating and arriving on time.

Envoy Air (sold as American Eagle)75%
886 flights · 77% on time as flown · 3.2% cancel
United Airlines73%
2,389 flights · 75% on time as flown · 2.0% cancel
SkyWest Airlines (sold as United Express, Delta Connection, American Eagle or Alaska)72%
37 flights · 74% on time as flown · 3.4% cancel
American Airlines71%
2,453 flights · 73% on time as flown · 3.5% cancel

On time by departure time

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

Before 9 AM83%
1,503 flights · avg delay 23 min
9 AM to noon81%
901 flights · avg delay 20 min
Noon to 3 PM75%
1,196 flights · avg delay 27 min
3 to 6 PM65%
690 flights · avg delay 32 min
6 to 9 PM64%
1,241 flights · avg delay 31 min
After 9 PM81%
242 flights · avg delay 10 min

Best day: Saturday (76%). Worst: Monday (71%).

Smarter routing

Nearby airports that run more on time

HOU → DAL 79% chance on time
William P. Hobby Airport to Dallas Love Field · 4,075 flights a year · 36 mi from your airports · yours: 73%
Rank flights Fares

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 aircraft42%
Airline (crew, maintenance, boarding)29%
Air traffic control and airport volume18%
Severe weather11%

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 DFW questions

What time of day is best to fly IAH to DFW?: Before 9 AM: 83% of flights arrived on time, against 64% for departures 6 to 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 DFW?: Envoy, with a season-adjusted 75% chance of operating and arriving on time over 886 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 DFW?: May (64% on time); the best was February (82%), 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.

More routes from IAH

Live status: FAA delays and ground stops

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