American Airlines LIS PHL AA259
American Airlines · Live forecast
LIS → PHL
AA259 · Aug 18, 2026 · 11:05 WES
84
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

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💙
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 they don't put the aircraft in danger. Many passengers feel exactly the same way.
Right now on your route
Live pilot reports from aircraft flying LIS → PHL
9 pilot reports along this route
8 / 9
Reporting smooth
0 / 9
Light turbulence
1
Moderate or worse
Latest pilot reports
Smooth
ARP IBE03VV 4457N05052W 2343 F350 4500N05000W 2347 4600N04000W MS49 276/51 KT ECOQG DDL IG1 182343 J02A
4m ago
Smooth
ARP IBE03VV 4454N05129W 2340 F350 4500N05000W 2347 4600N04000W MS49 274/51 KT ECOQG DDL IG1 182340 J99A
7m ago
Smooth
ARP AAL742 4453N05123W 2335 F410 4458N05000W 2342 4628N04000W MS56 301/57 KT N819AN DDL YYT 182335 L43A
12m ago
Smooth
ARP IBE0212 4511N04844W 2327 F350 4600N04000W 0011 4600N03000W MS49 294/65 KT ECOIL DDL IG1 182328 J17A
20m ago
Smooth
ARP UAL242 4211N 06700W 2316 F370 252/057KT TB SMTH IC
31m ago
AI-powered flight briefing
11,000 data points analyzed · HIGH confidence
Your Flight

We analysed more than 11,000 data points along your route from Lisbon Humberto Delgado Airport, Lisbon to Philadelphia International Airport, Philadelphia.

Your Journey Beta

41 minutes, 4 hours 20 minutes, and 5 hours 45 minutes 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.

Smooth Flight

We're expecting smooth conditions throughout your flight. You can sit back and relax.

Takeoff

Takeoff should feel smooth with possible light bumps, with calm conditions around the airport.

Winds Aloft

Winds at cruising altitude are about 45 knots. These winds may delay arrival by up to 26 minutes.

Landing

Landing should feel a bit bumpy on descent 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
Live data from ECMWF global forecast models · 12 atmospheric pressure levels · Updated every 6 hours
Flight Timeline 7h 40min
Maximum turbulence expected per segment
Takeoff
Light
0:30-0:59
Moderate
0:59-1:28
Smooth
1:28-1:57
Smooth
1:57-2:26
Smooth
2:26-2:55
Light
2:55-3:24
Light
3:24-3:53
Light
3:53-4:22
Moderate
4:22-4:50
Light
4:50-5:18
Light
5:18-5:46
Moderate
5:46-6:14
Moderate
6:14-6:42
Light
6:42-7:10
Light
Landing
Moderate
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
10 kt (220°)
Sky
NSC
Temperature
22°C
Conditions
VFR - Clear conditions, no delays expected
PHL Philadelphia International Airport - Arrival
Wind
10 kt (320°)
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:

Disclaimer: This forecast is for informational purposes only. Always consult official aviation weather sources and follow ATC guidance.

Fly this route, calmly Game · Beta A calming mini-game, not a forecast. Glide LIS → PHL through soft clouds, nothing to crash into.