Your Flight
We analysed more than 3,000 data points along your route from London Heathrow Airport, London to Lisbon Humberto Delgado Airport, Lisbon.
Tap Air Portugal
LHR
LIS
TP9255
Tap Air Portugal · Live forecast
LHR
→
LIS
87
Calm Score
"A smooth ride ahead — sit back and enjoy."
2h 20m
Duration
844 nm
Distance
36,000 ft
Cruise Altitude
HIGH
Confidence
Turbulence comfort along route
Comfort score combines turbulence probability with intensity — higher means rougher
Smooth
Light
Moderate
Severe
Set an alert before your flight
Beta
You still have 10 hours before departure. We'll notify you if this forecast changes.
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 LHR → LIS
5 pilot reports along this route
5 / 5
Reporting smooth
0 / 5
Light turbulence
0
Moderate or worse
Latest pilot reports
Smooth
ARP FWI40J 4656N 00446W 1204 F380 M64 311/44 SIVIR 1227 NILAV KT FHSIS QXS LRT 161204 J59A
4m ago
Smooth
ARP FWI40J 4655N00453W 1204 F380 SIVIR 1227 NILAV MS64 311/44 KT FHSIS QXT EUA 161205 J61A
4m ago
Smooth
ARP AFR816 4648N 00455W 1201 F340 M55 305/38 RIVAK 1219 SIVIR KT FHRBB QXS BES 161201 L07A
7m ago
Smooth
ARP AFR498 4613N 00715W 1155 F380 M66 297/27 RIVAK 1159 SIVIR KT FGZCM QXS OVD 161155 J14A
13m ago
Smooth
ARP FWI46E 4653N 00516W 1145 F390 M66 313/43 RIVAK 1201 SIVIR KT FHHAV QXS LRT 161145 J17A
23m ago
AI-powered flight briefing
3,000 data points analyzed
· HIGH confidence
Your Journey Beta
1 hour 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 English Channel – conditions there 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 31 knots.
Landing
Landing should feel smooth 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 2h 20min
Maximum turbulence expected per segment
Takeoff
Light
0:20-0:45
Light
0:45-1:10
Moderate
1:10-1:35
Light
1:35-2:00
Smooth
Landing
Smooth
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
LHR
London Heathrow Airport — Departure
Wind
17 kt (250°)
Sky
Broken
Temperature
9°C
Conditions
VFR — Clear conditions, no delays expected
LIS
Lisbon Humberto Delgado Airport — Arrival
Wind
7 kt (60°)
Sky
NSC
Temperature
16°C
Conditions
VFR — Clear conditions, no delays expected
Your flight details
Departure timing and aircraft information
Evening Flight Departure
Time of day
Evening Flight
Tip
Evening and night flights typically offer smoother conditions as thermal activity subsides and the atmosphere stabilizes after sunset.
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.