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Route · IAH → HRL · 2020–2025 BTS data

Houston to Harlingen/San Benito

According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), IAH to HRL (Houston to Harlingen/San Benito) ranks #4145 of 4927 tracked domestic routes by total flights (most flights = #1).

Data updated 2026-06-13

88.4%
On-time
+9.4 pts
vs US avg
103 min
Delay when late
1,505
Flights
#4145 of 4927
Corpus placement

Cancelled

3.3%

Best Month

Mar 2020 95%

Worst Month

Sep 2023 78%

Distance

295 mi

Carriers

11

Monthly Performance

Recent 24 months of route data.

Period Flights Delayed Cancelled Diverted Carriers
Apr 2024 30 2 0 0 OO
Dec 2023 31 9 0 1 OO
Sep 2023 55 12 2 0 OO
May 2022 56 11 0 0 YV
Apr 2022 35 1 1 0 OO,YV
Mar 2022 33 6 1 0 OO,YV
Jan 2022 31 7 1 0 OO,YV
Oct 2021 34 8 1 0 OO,YV
Sep 2021 58 6 1 0 YV
Aug 2021 40 7 3 0 YV
Jun 2021 31 11 1 0 OO,YV
May 2021 57 11 1 0 OO,YV
Dec 2020 42 4 0 0 OO,YV
Nov 2020 85 8 0 1 YV,OO
Oct 2020 85 6 0 1 YV,OO
Sep 2020 84 8 0 0 YV,EV,OO
Aug 2020 90 6 5 1 EV,YV
Jul 2020 80 6 3 0 EV,YV
Jun 2020 50 4 0 0 EV,F9
May 2020 47 3 1 0 EV,YV,F9
Apr 2020 37 2 1 0 EV,YV
Mar 2020 128 7 26 0 EV,YX
Feb 2020 140 17 0 0 YV,EV
Jan 2020 146 13 1 0 YV,YX,EV

IAH–HRL seasonal on-time pattern

Best: April (95.1%) · weakest: June (81.5%)

80%85%90%95%100% JanFebMarAprMayJunJulAugSepOctNovDec 82.2%

Strongest calendar month

April

95.1% on-time · ~34 flights/mo

Busiest calendar month

February

~140 flights/mo avg

Weakest calendar month

June

81.5% on-time · ~41 flights/mo

Cancellation Rate

3.3%

49 of 1,505 flights

Diversion Rate

0.3%

4 of 1,505 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

HRL - Harlingen/San Benito

Full on-time, delay-cause, and seasonal performance for Harlingen/San Benito, TX.

HRL on-time profile

Compare the two airports

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

Compare IAH vs HRL

Origin-hub reliability standing

Among IAH's stronger departures

IAH → HRL posts a 88.4% on-time rate, landing in the ≥85% band with 17 of 102 BTS-tracked routes leaving Houston. The same hub also shows 79 mid-band and 6 challenged departures · fleet-wide on-time rank #347 of 4927 (highest on-time = #1).

What the Data Says About IAH to HRL

Houston to Harlingen/San Benito (IAH to HRL) is one of the more dependable pairings in the BTS On-Time Performance dataset: a 88.4% on-time rate across 1,505 flights, with delays that do happen averaging 102.7 minutes. The corridor runs roughly 295 miles and is served by 11 carriers. Over the most recent 24 months, 49 of 1,505 flights were cancelled (3.3%) and 4 diverted (0.3%).

The monthly split is wide on this route: Mar 2020 posted the strongest performance at 95% on-time, while Sep 2023 came in at just 78% - a 16-point swing worth factoring into travel timing.

On the multi-year calendar, IAH–HRL peaks in April at 95.1% on-time while February carries the heaviest traffic (~140 flights per month) ; the softest month is June at 81.5%, a 13.6-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.

Frequently Asked Questions

Where does IAH to HRL rank among US routes by traffic? ▼
According to PlainFlights' route traffic ranking, IAH to HRL ranks #4145 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 HRL? ▼
Flights from Houston to Harlingen/San Benito have a 88.4% on-time rate based on 1,505 flights. The average delay is 102.7 minutes. The best recent month was Mar 2020 with 95% on-time.
What is the cancellation rate for IAH to HRL? ▼
Over the last 24 months, 3.3% of flights on this route were cancelled (49 of 1,505 flights) and 0.3% were diverted.
How far is the flight from IAH to HRL? ▼
The flight distance from Houston (IAH) to Harlingen/San Benito (HRL) is approximately 295 miles. This route is served by 11 carriers.
When is the best time to fly from IAH to HRL? ▼
The best recent month for on-time performance was Mar 2020 (95% on-time). The worst was Sep 2023 (78% on-time). Consider booking during months with historically better performance.

Airports on this route

IAH Airport

Houston
HRL Airport

Harlingen/San Benito
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–HRL data

IAH–HRL runs 9.4 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 HRL airport profiles: delay causes and top routes differ even on the same corridor. IAH airport
  • If your dates flex, April (95.1% on-time) beats June (81.5%) on this corridor. Seasonal chart
  • 4 other routes post a similar 88.4% 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.