When is the Philadelphia to Singapore 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 PHL to SIN route?

The PHL–SIN route is typically operated by Boeing 777-300ER · Boeing 787-9. Airlines include United, American Airlines, Delta.

Is turbulence on PHL to SIN dangerous?

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

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

PHL to SIN Turbulence Forecast

Q: Is the Philadelphia to Singapore flight turbulent?

The PHL–SIN route typically experiences moderate turbulence.

Q: Which seat is smoothest on PHL to SIN?

Wing seats are smoothest. On a Boeing 777-300ER · Boeing 787-9, that's rows 22–42. Avoid the rear of the aircraft where turbulence is felt most.

Q: How long is the flight from PHL to SIN?

The PHL to SIN flight takes approximately 18h 35m, covering 9,587 miles (8,331 nautical miles) at a cruising altitude of 37,000 feet.

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

Live forecast

PHL

→

SIN

Philadelphia · Singapore · 18h 35m

45.3

Turb Score

18h 35m

Duration

8,331 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 PHL–SIN

0h1h2h3h4h5h6h18h 35m

Smooth

Light

Moderate

Heavy

About the PHL–SIN route

The Philadelphia to Singapore route spans the Pacific Ocean — one of the longest commercial flight paths in the world at 9,587 miles. The Pacific jet stream creates moderate turbulence, typically around 3–7 hours into the flight. The sheer length of the route means passengers experience varying conditions: calm stretches punctuated by bumpy patches.

The route is served by United, American Airlines, Delta on Boeing 777-300ER · Boeing 787-9 aircraft, with flights typically cruising at 37,000 feet over a distance of 9,587 miles (8,331 nautical miles).

💡 Tip: Long flight — turbulence varies throughout. Wing seats significantly reduce motion.

Philadelphia to Singapore Flight Time

How long is the flight from PHL to SIN?

18h 35m

Flight Time

9,587 mi

Distance

37,000 ft

Cruising Altitude

Boeing 777-300ER

Aircraft

The Philadelphia (PHL) to Singapore (SIN) flight takes approximately 18h 35m, covering 9,587 miles (8,331 nautical miles) at 37,000 feet. The route is operated by United, American Airlines, Delta. Return flights (SIN to PHL) take a similar time, though westbound transatlantic and transpacific routes are typically 30–60 minutes longer due to headwinds.

Turbulence levels on PHL–SIN

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

Get minute-by-minute timing for your specific flight

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Best time to fly PHL–SIN

Turbulence by month

Smooth

Light

Moderate

Rough

Best seat on PHL–SIN

Boeing 777-300ER

Front

Rows 1–21

Light

✓ Wing

Rows 22–42

Smoothest

Rear

Rows 43+

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

Philadelphia → Frankfurt

Moderate

PHL → LHR

Philadelphia → London

Moderate

LAX → SIN

Los Angeles → Singapore

Light

AMS → SIN

Amsterdam → Singapore

See all transpacific flights →

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Turbulence Forecast Map

Global turbulence outlook

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Passenger Reports

The over the North Pacific 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 18h 35m flight but we landed fine.

Solo traveler · April

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

Business traveler · March

Flew this in January expecting smooth skies based on past experience, but it was noticeably bumpier than usual. About an hour of moderate chop. Seatbelt sign basically stayed on.

Regular traveler · January

All PHL routes→ All SIN routes→

Frequently asked questions

Is the Philadelphia to Singapore flight turbulent?

The PHL–SIN route typically experiences moderate turbulence. The turbulence score for this route is 45.3/100.

When is turbulence worst on PHL to SIN?

Long flight — turbulence varies throughout. Wing seats significantly reduce motion. Check the turbulence chart above for the typical pattern along this specific route.

Which seat is smoothest on PHL to SIN?

Wing seats are always the smoothest. On a Boeing 777-300ER (the most common aircraft on this route), that's rows 22–42. Avoid the very rear of the aircraft — it amplifies turbulence motion.

How long is the flight from PHL to SIN?

The PHL to SIN flight takes approximately 18h 35m, covering 9,587 miles (8,331 nautical miles).

Which airlines fly PHL to SIN?

The main airlines operating this route are United, American Airlines, Delta, flying Boeing 777-300ER · Boeing 787-9 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