When is the Birmingham 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 BHM to SEA route?

The BHM–SEA route is typically operated by Boeing 737 · Airbus A321 · Boeing 757. Airlines include Delta Air Lines, Southwest Airlines.

Is turbulence on BHM to SEA dangerous?

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

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

BHM to SEA Turbulence Forecast

Q: Is the Birmingham to Seattle flight turbulent?

The BHM–SEA route typically experiences moderate turbulence. Moderate turbulence expected — fasten seatbelt when seated.

Q: Which seat is smoothest on BHM to SEA?

Wing seats are smoothest. On a Boeing 737 · Airbus A321 · Boeing 757, that's rows 12–20. Avoid the rear of the aircraft where turbulence is felt most.

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

The BHM to SEA flight takes approximately 4h 30m, covering 2,076 miles (1,804 nautical miles) at a cruising altitude of 37,000 feet.

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

Live forecast

BHM

→

SEA

Birmingham · Seattle · 4h 30m

Turb Score

4h 30m

Duration

1,804 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 BHM–SEA

0h1h2h3h4h5h6h4h 30m

Smooth

Light

Moderate

Heavy

About the BHM–SEA route

The Birmingham 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 Delta Air Lines, Southwest Airlines on Boeing 737 · Airbus A321 · Boeing 757 aircraft, with flights typically cruising at 37,000 feet over a distance of 2,076 miles (1,804 nautical miles).

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

Birmingham to Seattle Flight Time

How long is the flight from BHM to SEA?

4h 30m

Flight Time

2,076 mi

Distance

37,000 ft

Cruising Altitude

Boeing 737

Aircraft

The Birmingham (BHM) to Seattle (SEA) flight takes approximately 4h 30m, covering 2,076 miles (1,804 nautical miles) at 37,000 feet. The route is operated by Delta Air Lines, Southwest Airlines. Actual flight time may vary by 10–20 minutes depending on wind conditions and routing.

Turbulence levels on BHM–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 BHM–SEA

Turbulence by month

Smooth

Light

Moderate

Rough

Best seat on BHM–SEA

Boeing 737

Front

Rows 1–11

Light

✓ Wing

Rows 12–20

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

Seattle → Los Angeles

Light

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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

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Mountain Turbulence

Why mountain routes are the bumpiest

→

Severe Turbulence

What it feels like and how to prepare

→

Is Turbulence Dangerous?

What the safety data shows

→

Passenger Reports

Rough patch over the Front Range in June — drinks went everywhere on the row behind me. Probably 45 minutes of actual turbulence. Nothing dangerous but definitely uncomfortable.

Business traveler · June

The crossing the ridge section was legitimately rough. I was holding on to the armrests. Lasted maybe 40 minutes. One of the flight attendants had to sit down. Not a fun 4h 30m flight but we landed fine.

Solo traveler · September

Moderate turbulence crossing the ridge — the kind where you're glad you kept your seatbelt on. Lasted about 30-40 minutes, then smoothed out. I've had worse on transatlantic routes.

Frequent flyer · April

All BHM routes→ All SEA routes→

Frequently asked questions

Is the Birmingham to Seattle flight turbulent?

The BHM–SEA route typically experiences moderate turbulence. Moderate turbulence expected — fasten seatbelt when seated. The turbulence score for this route is 58/100.

When is turbulence worst on BHM 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 BHM to SEA?

Wing seats are always the smoothest. On a Boeing 737 (the most common aircraft on this route), that's rows 12–20. Avoid the very rear of the aircraft — it amplifies turbulence motion.

How long is the flight from BHM to SEA?

The BHM to SEA flight takes approximately 4h 30m, covering 2,076 miles (1,804 nautical miles).

Which airlines fly BHM to SEA?

The main airlines operating this route are Delta Air Lines, Southwest Airlines, flying Boeing 737 · Airbus A321 · Boeing 757 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