When is the St. Louis to Portland route most turbulent?

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

STL to PDX Turbulence Forecast

Q: Is the St. Louis to Portland flight turbulent?

The STL–PDX route typically experiences smooth turbulence. A very smooth flight with minimal turbulence expected.

Q: Which seat is smoothest on STL to PDX?

Wing seats are smoothest. On a Airbus A320 · Boeing 737, that's rows 10–20. Avoid the rear of the aircraft.

Q: How long is the flight from STL to PDX?

The STL to PDX flight takes approximately 3h 50m, covering 1,704 miles at 35,000 feet.

Is the St. Louis to Portland flight turbulent? Live forecast & historical patterns.

Live forecast

STL

→

PDX

St. Louis · Portland · 3h 50m

13.0

Turb Score

3h 50m

Duration

1,481 nm

Distance

35,000 ft

Cruise Alt.

Smooth

Typical

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Typical turbulence along the route

Historical average pattern for STL–PDX

0h1h2h3h4h5h6h3h 50m

Smooth

Light

Moderate

Heavy

About the STL–PDX route

The St. Louis to Portland domestic route is generally one of the smoother flights in the US network, covering 1,704 miles at around 35,000 feet. Turbulence is most common when weather systems cross the Midwest or when the flight path skirts the Rocky Mountains. Short duration means any rough patches pass quickly.

The route is served by United, American Airlines, Delta on Airbus A320 · Boeing 737 aircraft, with flights typically cruising at 35,000 feet over a distance of 1,704 miles (1,481 nautical miles).

💡 Tip: Domestic routes are generally smoother. Mountain crossings are the main turbulence source.

St. Louis to Portland Flight Time

How long is the flight from STL to PDX?

3h 50m

Flight Time

1,704 mi

Distance

35,000 ft

Cruising Altitude

Airbus A320

Aircraft

The St. Louis (STL) to Portland (PDX) flight takes approximately 3h 50m, covering 1,704 miles (1,481 nautical miles) at 35,000 feet. The route is operated by United, American Airlines, Delta. Actual flight time may vary by 10–20 minutes depending on wind conditions and routing.

Turbulence levels on STL–PDX

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 STL–PDX

Turbulence by month

Smooth

Light

Moderate

Rough

Best seat on STL–PDX

Airbus A320

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

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Turbulence Forecast Map

Global turbulence outlook

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Passenger Reports

Totally smooth January flight. The seatbelt sign came on once briefly on descent but nothing actually happened. Great trip.

Leisure traveler · January

Was nervous about this flight but honestly didn't need to be. Smooth the whole way, the 3h 50m went by fast.

First-time passenger · June

Fly this route pretty regularly for work. Most of the time it's smooth — January was completely fine, not a bump worth mentioning.

Business traveler · January

All STL routes→ All PDX routes→

Frequently asked questions

Is the St. Louis to Portland flight turbulent?

The STL–PDX route typically experiences smooth turbulence. A very smooth flight with minimal turbulence expected. The turbulence score for this route is 13.0/100.

When is turbulence worst on STL to PDX?

Domestic routes are generally smoother. Mountain crossings are the main turbulence source. Check the turbulence chart above for the typical pattern along this specific route.

Which seat is smoothest on STL to PDX?

Wing seats are always the smoothest. On a Airbus A320 (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 STL to PDX?

The STL to PDX flight takes approximately 3h 50m, covering 1,704 miles (1,481 nautical miles).

Which airlines fly STL to PDX?

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