PlainFlights

Route · IAH → LGA · 2020–2025 BTS data

Houston to New York

According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), IAH to LGA (Houston to New York) ranks #294 of 4927 tracked domestic routes by total flights (most flights = #1).

Data updated 2026-06-13

79.3%
On-time
+0.3 pts
vs US avg
81 min
Delay when late
21,489
Flights
#294 of 4927
Corpus placement

Cancelled

1.8%

Best Month

Sep 2024 89%

Worst Month

Jun 2025 61%

Distance

1,416 mi

Carriers

40

Monthly Performance

Recent 24 months of route data.

Period Flights Delayed Cancelled Diverted Carriers
Dec 2025 348 115 15 1 DL,NK,UA
Nov 2025 353 122 4 3 UA,DL,NK
Oct 2025 376 116 7 2 UA,DL,NK
Sep 2025 369 52 1 1 UA,DL,NK
Aug 2025 376 102 3 1 NK,UA,DL
Jul 2025 380 129 11 9 DL,UA,NK
Jun 2025 361 139 8 7 DL,UA,NK
May 2025 367 109 3 6 DL,UA,NK
Apr 2025 365 47 1 0 DL,NK,UA
Mar 2025 323 86 2 3 DL,OO,UA,NK
Feb 2025 304 58 3 2 DL,UA,NK
Jan 2025 375 65 22 2 DL,OO,UA,NK
Dec 2024 379 90 0 4 DL,NK,OO,UA
Nov 2024 374 57 1 0 OO,UA,NK,DL
Oct 2024 377 42 0 0 UA,OO,DL,NK
Sep 2024 338 37 0 2 OO,UA,DL,NK
Aug 2024 361 109 19 5 DL,NK,OO,UA
Jul 2024 379 139 30 7 DL,NK,OO,UA
Jun 2024 365 92 5 10 DL,NK,OO,UA
May 2024 377 127 8 4 DL,NK,OO,UA
Apr 2024 379 85 1 6 DL,NK,OO,UA
Mar 2024 294 59 0 0 DL,NK,OO,UA
Feb 2024 267 38 4 0 DL,NK,OO,UA
Jan 2024 227 59 5 5 DL,NK,UA

IAH–LGA seasonal on-time pattern

Best: September (85.5%) · weakest: June (72.7%)

70%75%80%85%90% JanFebMarAprMayJunJulAugSepOctNovDec 76.5%

Strongest calendar month

September

85.5% on-time · ~307 flights/mo

Busiest calendar month

November

~321 flights/mo avg

Weakest calendar month

June

72.7% on-time · ~270 flights/mo

Cancellation Rate

1.8%

153 of 8,414 flights

Diversion Rate

1.0%

80 of 8,414 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

LGA - New York

Full on-time, delay-cause, and seasonal performance for New York, NY.

LGA on-time profile

Compare the two airports

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

Compare IAH vs LGA

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: New York · fleet on-time rank #3409 of 4927.

What the Data Says About IAH to LGA

21,489 tracked flights put the IAH to LGA pairing (Houston to New York) at a 79.3% on-time rate, squarely in line with the wider network. Delays that do occur run 81.4 minutes on average. Across the 1,416-mile route and its 40 carriers, the trailing 24 months show 1.8% cancelled and 1.0% diverted (8,414 flights sampled).

The monthly split is wide on this route: Sep 2024 posted the strongest performance at 89% on-time, while Jun 2025 came in at just 61% - a 28-point swing worth factoring into travel timing.

On the multi-year calendar, IAH–LGA peaks in September at 85.5% on-time while November carries the heaviest traffic (~321 flights per month) ; the softest month is June at 72.7%, a 12.8-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.

Frequently Asked Questions

Where does IAH to LGA rank among US routes by traffic? ▼
According to PlainFlights' route traffic ranking, IAH to LGA ranks #294 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 LGA? ▼
Flights from Houston to New York have a 79.3% on-time rate based on 21,489 flights. The average delay is 81.4 minutes. The best recent month was Sep 2024 with 89% on-time.
What is the cancellation rate for IAH to LGA? ▼
Over the last 24 months, 1.8% of flights on this route were cancelled (153 of 8,414 flights) and 1.0% were diverted.
How far is the flight from IAH to LGA? ▼
The flight distance from Houston (IAH) to New York (LGA) is approximately 1,416 miles. This route is served by 40 carriers.
When is the best time to fly from IAH to LGA? ▼
The best recent month for on-time performance was Sep 2024 (89% on-time). The worst was Jun 2025 (61% on-time). Consider booking during months with historically better performance.

Airports on this route

IAH Airport

Houston
LGA Airport

New York
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–LGA data

IAH–LGA is mid-pack at 79.3% on-time; month and carrier mix move more than the corridor headline.

  • Compare IAH and LGA airport profiles: delay causes and top routes differ even on the same corridor. IAH airport
  • If your dates flex, September (85.5% on-time) beats June (72.7%) on this corridor. Seasonal chart
  • 4 other routes post a similar 79.3% 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.