When is the Washington to San Francisco 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 IAD to SFO route?

The IAD–SFO route is typically operated by Boeing 737 · Airbus A320. Airlines include United, American, Southwest, Alaska.

Is turbulence on IAD to SFO dangerous?

No — turbulence on the IAD–SFO 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 IAD to SFO flight?

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

IAD to SFO Turbulence Forecast

Q: Is the Washington to San Francisco flight turbulent?

The IAD–SFO route typically experiences moderate turbulence.

Q: Which seat is smoothest on IAD to SFO?

Wing seats are smoothest. On a Boeing 737 · Airbus A320, that's rows 15-22. Avoid the rear of the aircraft where turbulence is felt most.

Q: How long is the flight from IAD to SFO?

The IAD to SFO flight takes approximately 4h 41m, covering 2,433 miles (2,114 nautical miles) at a cruising altitude of 37,000 feet.

Is the Washington to San Francisco flight turbulent? Live forecast & historical patterns.

Live forecast

IAD

→

SFO

Washington · San Francisco · 4h 41m

6.5

Turb Score

4h 41m

Duration

2,114 nm

Distance

37,000 ft

Cruise Alt.

moderate

Typical

⚠️ moderate turbulence today

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Typical turbulence along the route

Historical average pattern for IAD–SFO

0h1h2h3h4h5h6h4h 41m

Smooth

Light

Moderate

Heavy

About the IAD–SFO route

The Washington to San Francisco domestic route is generally one of the smoother flights in the US network, covering 2,433 miles at around 37,000 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, Southwest, Alaska on Boeing 737 · Airbus A320 aircraft, with flights typically cruising at 37,000 feet over a distance of 2,433 miles (2,114 nautical miles).

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

Washington to San Francisco Flight Time

How long is the flight from IAD to SFO?

4h 41m

Flight Time

2,433 mi

Distance

37,000 ft

Cruising Altitude

Boeing 737

Aircraft

The Washington (IAD) to San Francisco (SFO) flight takes approximately 4h 41m, covering 2,433 miles (2,114 nautical miles) at 37,000 feet. The route is operated by United, American, Southwest, Alaska. Actual flight time may vary by 10–20 minutes depending on wind conditions and routing.

Turbulence levels on IAD–SFO

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 IAD–SFO

Turbulence by month

Smooth

Light

Moderate

Rough

Best seat on IAD–SFO

Boeing 737

Front

Rows 1–14

Light

✓ Wing

Rows 15-22

Smoothest

Rear

Rows 23+

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

IAD → FRA

Washington DC → Frankfurt

Washington DC → London

Moderate

JAC → SFO

Jackson Hole → San Francisco

Severe

MTJ → SFO

Montrose → San Francisco

Severe

FCA → SFO

Kalispell → San Francisco

Severe

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Related guides

Learn more about flight turbulence

Turbulence Tracker

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Best Seat Guide

Which rows feel turbulence least

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When Does Turbulence Happen?

Phases of flight explained

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Turbulence Forecast Map

Global turbulence outlook

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Passenger Reports

The 4h 41m flight had some light shaking around the halfway point. Nothing spilled, nobody panicked. Just normal flying.

Leisure traveler · March

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

Regular traveler · August

There was some noticeable movement over the mountains 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 IAD routes→ All SFO routes→

Frequently asked questions

Is the Washington to San Francisco flight turbulent?

The IAD–SFO route typically experiences moderate turbulence. The turbulence score for this route is 6.5/100.

When is turbulence worst on IAD to SFO?

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 IAD to SFO?

Wing seats are always the smoothest. On a Boeing 737 (the most common aircraft on this route), that's rows 15-22. Avoid the very rear of the aircraft — it amplifies turbulence motion.

How long is the flight from IAD to SFO?

The IAD to SFO flight takes approximately 4h 41m, covering 2,433 miles (2,114 nautical miles).

Which airlines fly IAD to SFO?

The main airlines operating this route are United, American, Southwest, Alaska, 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