When is the Houston to St. Thomas route most turbulent?

See the monthly chart above for exact patterns. Transatlantic and mountain routes are typically roughest in winter (Dec–Mar). Tropical and Caribbean routes peak during monsoon season (Jul–Sep).

What aircraft operates the IAH to STT route?

The IAH–STT route is typically operated by Boeing 737 · Airbus A320. Airlines include American, Delta, JetBlue, United.

Is turbulence on IAH to STT dangerous?

No — turbulence on the IAH–STT route is not dangerous to the aircraft. Modern commercial aircraft are built to withstand far more stress than any turbulence encountered. The main risk is to unbelted passengers. Always keep your seatbelt fastened when seated.

How can I check turbulence before my IAH to STT flight?

Use the Turbulence Forecast app (iOS & Android) for real-time PIREPs, SIGMET alerts, and AI-powered forecasts for the IAH–STT route. The app shows minute-by-minute turbulence timing for your specific flight date.

IAH to STT Turbulence Forecast

Q: Is the Houston to St. Thomas flight turbulent?

The IAH–STT route typically experiences light turbulence. A very smooth flight with minimal turbulence expected.

Q: Which seat is smoothest on IAH to STT?

Wing seats are smoothest. On a Boeing 737 · Airbus A320, that's rows 10-20. Avoid the rear of the aircraft where turbulence is felt most.

Is the Houston to St. Thomas flight turbulent? Live forecast & historical patterns.

Live forecast

IAH

→

STT

Houston · St. Thomas · 4h

Turb Score

Duration

1,797 nm

Distance

35,000 ft

Cruise Alt.

Light

Typical

⚠️ Light turbulence today

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Typical turbulence along the route

Historical average pattern for IAH–STT

0h1h2h3h4h5h6h4h

Smooth

Light

Moderate

Heavy

About the IAH–STT route

The Houston to St. Thomas route is one of the most popular leisure routes in North America, covering 2,068 miles over warm Caribbean waters. Turbulence is generally light — the main exception is tropical convective activity (thunderstorm-related turbulence) during hurricane season (June–November). Pilots typically route around storm cells when possible.

The route is served by American, Delta, JetBlue, United on Boeing 737 · Airbus A320 aircraft, with flights typically cruising at 35,000 feet over a distance of 2,068 miles (1,797 nautical miles).

💡 Tip: Mostly smooth. Hurricane season (Jun–Nov) can bring convective turbulence.

Houston to St. Thomas Flight Time

How long is the flight from IAH to STT?

Flight Time

2,068 mi

Distance

35,000 ft

Cruising Altitude

Boeing 737

Aircraft

The Houston (IAH) to St. Thomas (STT) flight takes approximately 4h, covering 2,068 miles (1,797 nautical miles) at 35,000 feet. The route is operated by American, Delta, JetBlue, United. Actual flight time may vary by 10–20 minutes depending on wind conditions and routing.

Turbulence levels on IAH–STT

What to expect at each phase of the flight

SmoothDeparture & arrival — climb and descent phases are generally calm

LightMinor bumps — drink stays in your cup, walking feels slightly unsteady

ModerateNoticeable bumps — stay seated with seatbelt on, service may pause

HeavyStrong jolts — unsecured items move, crew seated. Rare but possible

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Best time to fly IAH–STT

Turbulence by month

Smooth

Light

Moderate

Rough

Best seat on IAH–STT

Boeing 737

Front

Rows 1–9

Light

✓ Wing

Rows 10-20

Smoothest

Rear

Rows 21+

Rougher

Wing seats are over the center of gravity — least affected by turbulence.

What you'll see in the app

Full forecast, live map & seat recommendations

Similar routes

Other popular routes with turbulence data

BZE → IAH

Belize City → Houston

moderate

IAH → BZE

Houston → Belize City

New York → St. Thomas

See all caribbean flights →

Related guides

Learn more about flight turbulence

Turbulence Tracker

Track any flight in real time

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Best Seat Guide

Which rows feel turbulence least

→

When Does Turbulence Happen?

Phases of flight explained

→

Turbulence Forecast Map

Global turbulence outlook

→

Passenger Reports

Some light chop over the islands — seatbelt sign came on for maybe 20 minutes but nothing to worry about. Typical for this route in January.

Regular traveler · January

Kids barely noticed the turbulence — just some mild bumps over the islands. Seatbelt sign was on and off a couple times. Nothing dramatic.

Parent traveling with kids · October

There was some noticeable movement over the islands that made me grip the armrest. My seatmate (clearly a regular) didn't even look up from their book. Perspective.

First-time flyer · January

All IAH routes→ All STT routes→

Frequently asked questions

Is the Houston to St. Thomas flight turbulent?

The IAH–STT route typically experiences light turbulence. A very smooth flight with minimal turbulence expected. The turbulence score for this route is 2/100.

When is turbulence worst on IAH to STT?

Mostly smooth. Hurricane season (Jun–Nov) can bring convective turbulence. Check the turbulence chart above for the typical pattern along this specific route.

Which seat is smoothest on IAH to STT?

Wing seats are always the smoothest. On a Boeing 737 (the most common aircraft on this route), that's rows 10-20. Avoid the very rear of the aircraft — it amplifies turbulence motion.

How long is the flight from IAH to STT?

The IAH to STT flight takes approximately 4h, covering 2,068 miles (1,797 nautical miles).

Which airlines fly IAH to STT?

The main airlines operating this route are American, Delta, JetBlue, United, flying Boeing 737 · Airbus A320 aircraft.

Data Sources

PIREP — Pilot reports (PIREPs) submitted via FAA/ICAO systems, aggregated over 12+ months of historical data
SIGMET / AIRMET — Significant Meteorological Information bulletins from NOAA Aviation Weather Center
EDR data — Eddy Dissipation Rate measurements from commercial aircraft (ADS-B derived turbulence intensity)
Seasonal patterns — 5-year rolling averages of turbulence frequency and intensity by month for this route

Scores represent typical conditions. Actual turbulence varies daily. For real-time forecasts, use the Turbulence Forecast app. · About our data