When is the Seattle to Philadelphia 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 SEA to PHL route?

The SEA–PHL route is typically operated by Boeing 737 · Airbus A320. Airlines include American, Spirit, Frontier, Alaska.

Is turbulence on SEA to PHL dangerous?

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

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

SEA to PHL Turbulence Forecast

Q: Is the Seattle to Philadelphia flight turbulent?

The SEA–PHL route typically experiences moderate turbulence.

Q: Which seat is smoothest on SEA to PHL?

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 SEA to PHL?

The SEA to PHL flight takes approximately 5h 1m, covering 2,406 miles (2,091 nautical miles) at a cruising altitude of 37,000 feet.

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

Live forecast

SEA

→

PHL

Seattle · Philadelphia · 5h 1m

6.5

Turb Score

5h 1m

Duration

2,091 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 SEA–PHL

0h1h2h3h4h5h6h5h 1m

Smooth

Light

Moderate

Heavy

About the SEA–PHL route

The Seattle to Philadelphia domestic route is generally one of the smoother flights in the US network, covering 2,406 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 American, Spirit, Frontier, Alaska on Boeing 737 · Airbus A320 aircraft, with flights typically cruising at 37,000 feet over a distance of 2,406 miles (2,091 nautical miles).

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

Seattle to Philadelphia Flight Time

How long is the flight from SEA to PHL?

5h 1m

Flight Time

2,406 mi

Distance

37,000 ft

Cruising Altitude

Boeing 737

Aircraft

The Seattle (SEA) to Philadelphia (PHL) flight takes approximately 5h 1m, covering 2,406 miles (2,091 nautical miles) at 37,000 feet. The route is operated by American, Spirit, Frontier, Alaska. Actual flight time may vary by 10–20 minutes depending on wind conditions and routing.

Turbulence levels on SEA–PHL

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 SEA–PHL

Turbulence by month

Smooth

Light

Moderate

Rough

Best seat on SEA–PHL

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

Los Angeles → Philadelphia

Light

FLL → PHL

Fort Lauderdale → Philadelphia

Light

DFW → PHL

Dallas → Philadelphia

Smooth

See all us domestic 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

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 · March

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

First-time flyer · May

The 5h 1m flight had some light shaking around the halfway point. Nothing spilled, nobody panicked. Just normal flying.

Leisure traveler · January

All SEA routes→ All PHL routes→

Frequently asked questions

Is the Seattle to Philadelphia flight turbulent?

The SEA–PHL route typically experiences moderate turbulence. The turbulence score for this route is 6.5/100.

When is turbulence worst on SEA to PHL?

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 SEA to PHL?

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 SEA to PHL?

The SEA to PHL flight takes approximately 5h 1m, covering 2,406 miles (2,091 nautical miles).

Which airlines fly SEA to PHL?

The main airlines operating this route are American, Spirit, Frontier, 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