Your Flight
We analysed more than 11,000 data points along your route from Lisbon Humberto Delgado Airport, Lisbon to Philadelphia International Airport, Philadelphia.
American Airlines
LIS
PHL
AA259
American Airlines · Live forecast
LIS
→
PHL
80
Calm Score
"A smooth ride ahead — sit back and enjoy."
7h 40m
Duration
2,997 nm
Distance
40,000 ft
Cruise Altitude
HIGH
Confidence
Turbulence comfort along route
Comfort score combines turbulence probability with intensity, higher means rougher
Smooth
Light
Moderate
Severe
Notifications not available
This flight has already departed.
We know turbulence can feel scary — especially on long flights.
This report is built for you: what bumps feel like, when they happen, and why you'll be completely safe. 1 in 3 passengers feel exactly like you.
Right now on your route
Live pilot reports from aircraft flying LIS → PHL
2 pilot reports along this route
2 / 2
Reporting smooth
0 / 2
Light turbulence
0
Moderate or worse
Latest pilot reports
Smooth
ARP DAL112 4545N05133W 2251 F370 4600N05000W 2258 4900N04000W MS51 283/60 KT N812NW DDL YYT 262251 J60A
18m ago
Smooth
ARP UAL735 4546N05123W 2249 F350 4600N05000W 2255 4900N04000W MS46 281/62 KT N59053 QXS YYT 262249 F34A
20m ago
AI-powered flight briefing
11,000 data points analyzed
· HIGH confidence
Your Journey Beta
2 hours 35 minutes, 5 hours 35 minutes, and 6 hours into the flight: Some moderate bumps expected.
The crew may adjust altitude or ask you to stay seated during these sections.
The rest of the flight should be smooth.
Your route takes you crossing the North Atlantic Ocean and over the Appalachian Mountains – these areas can sometimes cause light turbulence.
Mostly Smooth
Overall conditions look mostly smooth with occasional light bumps. Nothing to worry about.
Takeoff
Takeoff should feel smooth with possible light bumps, with calm conditions around the airport.
Winds Aloft
Winds at cruising altitude are about 50 knots. These winds may delay arrival by a few minutes.
Landing
Landing should feel smooth with possible light bumps with typical approach conditions.
You're in Safe Hands
If you feel nervous at any point, remember that turbulence is expected, safe, and part of normal flying. The crew is monitoring everything, and the aircraft is built to handle far more than anything you will feel. Have a safe and calm flight.
Relaxation Exercises
ZeroTurb Index (ZTI): Powered by our turbulence prediction algorithm combining atmospheric Richardson Number, wind shear analysis, temperature gradients, and geomagnetic activity. Learn more
Flight Timeline 7h 40min
Maximum turbulence expected per segment
Takeoff
Light
0:30-0:59
Light
0:59-1:28
Light
1:28-1:57
Light
1:57-2:26
Light
2:26-2:55
Moderate
2:55-3:24
Light
3:24-3:53
Light
3:53-4:22
Light
4:22-4:50
Light
4:50-5:18
Moderate
5:18-5:46
Moderate
5:46-6:14
Moderate
6:14-6:42
Light
6:42-7:10
Light
Landing
Light
Smooth
Light
Moderate
Severe
Longer bars indicate higher turbulence intensity. Values shown are the maximum for each time segment.
Airport conditions
Live weather at departure and arrival
LIS
Lisbon Humberto Delgado Airport — Departure
Wind
12 kt (330°)
Sky
Few
Temperature
20°C
Conditions
VFR — Clear conditions, no delays expected
PHL
Philadelphia International Airport — Arrival
Wind
7 kt (190°)
Sky
Broken
Temperature
29°C
Conditions
VFR — Clear conditions, no delays expected
Your flight details
Departure timing and aircraft information
Morning Flight Departure
Time of day
Morning Flight
Tip
Morning flights typically experience smoother conditions as the atmosphere is more stable and thermal turbulence hasn't yet developed.
When
Today
Data sources & our approach
ZeroTurb's Custom Algorithm: Our proprietary
ZeroTurb Index (ZTI) combines three meteorological indices weighted by their
predictive accuracy — giving you transparent, passenger-focused turbulence probability instead
of vague categories.
This forecast integrates data from:
- ECMWF Open Data — Global atmospheric model (wind/temperature at 13 flight levels)
- NOAA Aviation Weather Center — Pilot Reports (PIREPs), SIGMETs/AIRMETs, TAFs
- NOAA Space Weather Prediction Center — Aurora forecasts for polar routes
- AviationStack API — Flight schedules and airline operational data
Disclaimer: This forecast is for informational purposes only. Always consult official aviation weather sources and follow ATC guidance.