When is the Los Angeles to Seattle 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 LAX to SEA route?

The LAX–SEA route is typically operated by Boeing 737 · Airbus A320. Airlines include Alaska Airlines, Southwest Airlines, Delta Air Lines.

Is turbulence on LAX to SEA dangerous?

No — turbulence on the LAX–SEA 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 LAX to SEA flight?

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

LAX to SEA Turbulence Forecast

Q: Is the Los Angeles to Seattle flight turbulent?

The LAX–SEA route typically experiences light turbulence. Light turbulence may occur — mostly smooth with occasional bumps.

Q: Which seat is smoothest on LAX to SEA?

Wing seats are smoothest. On a Boeing 737 · Airbus A320, that's rows 10–18. Avoid the rear of the aircraft where turbulence is felt most.

Q: How long is the flight from LAX to SEA?

The LAX to SEA flight takes approximately 2h 47m, covering 1,098 miles (954 nautical miles) at a cruising altitude of 33,000 feet.

Is the Los Angeles to Seattle flight turbulent? Live forecast & historical patterns.

Live forecast

LAX

→

SEA

Los Angeles · Seattle · 2h 47m

Turb Score

2h 47m

Duration

954 nm

Distance

33,000 ft

Cruise Alt.

Light

Typical

⚠️ Light turbulence today

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Typical turbulence along the route

Historical average pattern for LAX–SEA

0h1h2h3h4h5h6h2h 47m

Smooth

Light

Moderate

Heavy

About the LAX–SEA route

The Los Angeles to Seattle route crosses the Rocky Mountains — one of the most turbulent regions in North America. Mountain wave turbulence occurs when strong winds blow over mountain peaks, creating powerful invisible waves that extend to cruise altitude. The worst turbulence typically occurs in the first 30–60 minutes when the aircraft is climbing over the range.

The route is served by Alaska Airlines, Southwest Airlines, Delta Air Lines on Boeing 737 · Airbus A320 aircraft, with flights typically cruising at 33,000 feet over a distance of 1,098 miles (954 nautical miles).

💡 Tip: Mountain wave turbulence hits early. If flying over Rockies, expect the first hour to be bumpy.

Los Angeles to Seattle Flight Time

How long is the flight from LAX to SEA?

2h 47m

Flight Time

1,098 mi

Distance

33,000 ft

Cruising Altitude

Boeing 737

Aircraft

The Los Angeles (LAX) to Seattle (SEA) flight takes approximately 2h 47m, covering 1,098 miles (954 nautical miles) at 33,000 feet. The route is operated by Alaska Airlines, Southwest Airlines, Delta Air Lines. Actual flight time may vary by 10–20 minutes depending on wind conditions and routing.

Turbulence levels on LAX–SEA

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 LAX–SEA

Turbulence by month

Smooth

Light

Moderate

Rough

Best seat on LAX–SEA

Boeing 737

Front

Rows 1–9

Light

✓ Wing

Rows 10–18

Smoothest

Rear

Rows 19+

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

SEA → LAX

Seattle → Los Angeles

Light

ORD → LAX

Chicago → Los Angeles

Seattle → San Francisco

Light

SFO → SEA

San Francisco → Seattle

See all mountain routes →

Related guides

Learn more about flight turbulence

Turbulence Tracker

Track any flight in real time

→

Best Seat Guide

Which rows feel turbulence least

→

Mountain Turbulence

Why mountain routes are the bumpiest

→

Severe Turbulence

What it feels like and how to prepare

→

Turbulence Forecast Map

Global turbulence outlook

→

Passenger Reports

The 2h 47m flight had some light shaking around the halfway point. Nothing spilled, nobody panicked. Just normal flying.

Leisure traveler · May

A few bumpy patches crossing the Rockies, lasted maybe half an hour total. Drink service was paused briefly. Not unusual for this time of year.

Frequent flyer · September

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

Parent traveling with kids · March

All LAX routes→ All SEA routes→

Frequently asked questions

Is the Los Angeles to Seattle flight turbulent?

The LAX–SEA route typically experiences light turbulence. Light turbulence may occur — mostly smooth with occasional bumps. The turbulence score for this route is 45/100.

When is turbulence worst on LAX to SEA?

Mountain wave turbulence hits early. If flying over Rockies, expect the first hour to be bumpy. Check the turbulence chart above for the typical pattern along this specific route.

Which seat is smoothest on LAX to SEA?

Wing seats are always the smoothest. On a Boeing 737 (the most common aircraft on this route), that's rows 10–18. Avoid the very rear of the aircraft — it amplifies turbulence motion.

How long is the flight from LAX to SEA?

The LAX to SEA flight takes approximately 2h 47m, covering 1,098 miles (954 nautical miles).

Which airlines fly LAX to SEA?

The main airlines operating this route are Alaska Airlines, Southwest Airlines, Delta Air Lines, 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