PlainFlights

Route · IAH → DAL · 2020–2025 BTS data

Houston to Dallas

According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), IAH to DAL (Houston to Dallas) ranks #2343 of 4927 tracked domestic routes by total flights (most flights = #1).

Data updated 2026-06-13

83.7%
On-time
+4.7 pts
vs US avg
68 min
Delay when late
5,378
Flights
#2343 of 4927
Corpus placement

Cancelled

3.1%

Best Month

Feb 2024 94%

Worst Month

May 2024 65%

Distance

216 mi

Carriers

1

Monthly Performance

Recent 24 months of route data.

Period Flights Delayed Cancelled Diverted Carriers
Jul 2024 83 20 2 0 WN
Jun 2024 81 20 0 0 WN
May 2024 89 31 4 0 WN
Apr 2024 85 14 2 0 WN
Mar 2024 84 15 0 2 WN
Feb 2024 83 5 1 0 WN
Jan 2024 99 16 8 0 WN
Dec 2023 128 13 0 0 WN
Nov 2023 128 10 2 0 WN
Oct 2023 137 15 2 0 WN
Sep 2023 133 24 1 0 WN
Aug 2023 143 11 2 0 WN
Jul 2023 134 28 0 0 WN
Jun 2023 131 25 4 1 WN
May 2023 139 18 2 0 WN
Apr 2023 132 19 7 0 WN
Mar 2023 143 18 2 0 WN
Feb 2023 128 21 6 0 WN
Jan 2023 142 16 10 0 WN
Dec 2022 134 20 21 0 WN
Nov 2022 136 17 3 0 WN
Oct 2022 131 18 5 1 WN
Sep 2022 131 14 2 0 WN
Aug 2022 147 30 3 1 WN

IAH–DAL seasonal on-time pattern

Best: November (90.4%) · weakest: July (79.6%)

75%80%85%90%95% JanFebMarAprMayJunJulAugSepOctNovDec 87%

Strongest calendar month

November

90.4% on-time · ~142 flights/mo

Busiest calendar month

August

~156 flights/mo avg

Weakest calendar month

July

79.6% on-time · ~135 flights/mo

Cancellation Rate

3.1%

89 of 2,901 flights

Diversion Rate

0.2%

5 of 2,901 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

DAL - Dallas

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

DAL on-time profile

Compare the two airports

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

Compare IAH vs DAL

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: Dallas · fleet on-time rank #1691 of 4927.

What the Data Says About IAH to DAL

Bureau of Transportation Statistics records show Houston to Dallas (IAH to DAL) running a 83.7% on-time rate over 5,378 tracked flights, on the stronger end of a typical domestic pairing. When flights do run late, the average delay is 67.7 minutes. The 216-mile corridor is served by 1 carrier, and over the last 24 months 3.1% of 2,901 flights were cancelled, 0.2% diverted.

The monthly split is wide on this route: Feb 2024 posted the strongest performance at 94% on-time, while May 2024 came in at just 65% - a 29-point swing worth factoring into travel timing.

On the multi-year calendar, IAH–DAL peaks in November at 90.4% on-time while August carries the heaviest traffic (~156 flights per month) ; the softest month is July at 79.6%, a 10.8-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.

Frequently Asked Questions

Where does IAH to DAL rank among US routes by traffic? ▼
According to PlainFlights' route traffic ranking, IAH to DAL ranks #2343 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 DAL? ▼
Flights from Houston to Dallas have a 83.7% on-time rate based on 5,378 flights. The average delay is 67.7 minutes. The best recent month was Feb 2024 with 94% on-time.
What is the cancellation rate for IAH to DAL? ▼
Over the last 24 months, 3.1% of flights on this route were cancelled (89 of 2,901 flights) and 0.2% were diverted.
How far is the flight from IAH to DAL? ▼
The flight distance from Houston (IAH) to Dallas (DAL) is approximately 216 miles. This route is served by 1 carrier.
When is the best time to fly from IAH to DAL? ▼
The best recent month for on-time performance was Feb 2024 (94% on-time). The worst was May 2024 (65% on-time). Consider booking during months with historically better performance.

Airports on this route

IAH Airport

Houston
DAL Airport

Dallas
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–DAL data

IAH–DAL runs 4.7 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 DAL airport profiles: delay causes and top routes differ even on the same corridor. IAH airport
  • If your dates flex, November (90.4% on-time) beats July (79.6%) on this corridor. Seasonal chart
  • 4 other routes post a similar 83.7% 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.