Route · IAH → HSV · 2020–2025 BTS data

Houston to Huntsville

The IAH–HSV corridor (Houston, TX → Huntsville, AL) runs ahead of the national average, served by 9 carriers across roughly 595 miles.

Compiled by PlainFlights Editorial, Flight Performance Editorial Team

Data updated 2026-06-13

87.7%
On-time: +8.7 pts
vs US avg: 69 min
Delay when late: 604
Flights

Cancelled

6.0%

Best Month

Aug 2020 98%

Worst Month

Jan 2020 78%

Distance

595 mi

Carriers

Monthly Performance

Recent 24 months of route data.

Period	Flights	Delayed	Cancelled	Diverted	Carriers
Dec 2022	31	7	0	0	OO
Sep 2020	53	6	0	0	EV,OO
Aug 2020	54	1	4	0	EV
Jul 2020	60	6	0	0	EV
Jun 2020	48	3	0	0	EV,YV
May 2020	59	6	3	0	EV,OO,YV
Apr 2020	37	1	8	0	OO,EV
Mar 2020	92	9	19	0	EV,YV,YX,OO
Feb 2020	82	16	0	1	YV,EV,OO
Jan 2020	88	19	2	0	YV,OO,EV

Cancellation Rate

6.0%

36 of 604 flights

Diversion Rate

0.2%

1 of 604 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.

Origin airport →

HSV - Huntsville

Full on-time, delay-cause, and seasonal performance for Huntsville, AL.

Destination airport →

Compare the two airports

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

Open comparison tool →

Similar routes

Other BTS-tracked routes with comparable performance or trip length to IAH–HSV.

Routes with a similar on-time rate

PDX → SEA

Portland to Seattle

87.7% on-time

PDX → LAX

Portland to Los Angeles

87.7% on-time

ATL → CAE

Atlanta to Columbia

87.7% on-time

SLC → OAK

Salt Lake City to Oakland

87.7% on-time

Routes of a similar trip length

ATL → MIA

Atlanta to Miami

594 mi

MIA → ATL

Miami to Atlanta

594 mi

ATL → DTW

Atlanta to Detroit

594 mi

DTW → ATL

Detroit to Atlanta

594 mi

What the Data Says About IAH to HSV

Houston to Huntsville (IAH to HSV) is one of the more dependable pairings in the BTS On-Time Performance dataset: a 87.7% on-time rate across 604 flights, with delays that do happen averaging 68.9 minutes. The corridor runs roughly 595 miles and is served by 9 carriers. Over the most recent 24 months, 36 of 604 flights were cancelled (6.0%) and 1 diverted (0.2%).

The monthly split is wide on this route: Aug 2020 posted the strongest performance at 98% on-time, while Jan 2020 came in at just 78% - a 20-point swing worth factoring into travel timing.

Frequently Asked Questions

How often are flights delayed from IAH to HSV? ▼

Flights from Houston to Huntsville have a 87.7% on-time rate based on 604 flights. The average delay is 68.9 minutes. The best recent month was Aug 2020 with 98% on-time.

What is the cancellation rate for IAH to HSV? ▼

Over the last 24 months, 6.0% of flights on this route were cancelled (36 of 604 flights) and 0.2% were diverted.

How far is the flight from IAH to HSV? ▼

The flight distance from Houston (IAH) to Huntsville (HSV) is approximately 595 miles. This route is served by 9 carriers.

When is the best time to fly from IAH to HSV? ▼

The best recent month for on-time performance was Aug 2020 (98% on-time). The worst was Jan 2020 (78% on-time). Consider booking during months with historically better performance.

Flight Guides

Tips and data-driven advice for choosing reliable routes.

How to Choose Reliable Flight Routes

Use delay data to pick flights that arrive on time

Best & Worst Airlines for On-Time Performance

Which carriers consistently outperform peers

Why Flights Get Cancelled

Cancellation causes broken down by data

Explore PlainFlights

Houston

Huntsville

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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.

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 Editorial

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.