Your Flight
We analysed more than 10,000 data points along your route from Logan International, Boston to Lisbon Humberto Delgado Airport, Lisbon.
Tap Air Portugal
BOS
LIS
TP218
Tap Air Portugal · Live forecast
BOS
→
LIS
82
Calm Score
"A smooth ride ahead — sit back and enjoy."
6h 30m
Duration
2,767 nm
Distance
39,000 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 19 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 BOS → LIS
15 pilot reports along this route
15 / 15
Reporting smooth
0 / 15
Light turbulence
0
Moderate or worse
Latest pilot reports
Smooth
ARP BAW18B 4352N 03858W 0329 F390 M49 252/94 4630N 03000W 0412 4830N 02000W KT GVIIB DDL XXF 160329 F57A
2m ago
Smooth
ARP AAL192 4602N 03923W 0329 F370 M43 254/71 4600N 03000W 0412 4600N 02000W KT N778AN DDL XXH 160330 F06A
2m ago
Smooth
ARP LCO3601 4349N 04731W 0328 F330 M53 295/126 4558N 03959W 0407 4858N 02959W KT N534LA QXT IGW 160328 F07A
3m ago
Smooth
ARP TSC680 4548N 05427W 0327 F290 M47 304/112 4556N 05202W 0339 4600N 05000W KT CGOIX QXT IGW 160327 J38A
4m ago
Smooth
ARP AAL728 4431N 04534W 0326 F390 M47 290/75 4458N 03959W 0351 4658N 02959W KT N847MF DDL XXH 160326 L82A
5m ago
AI-powered flight briefing
10,000 data points analyzed
· HIGH confidence
Your Journey Beta
5 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 over the Appalachian Mountains and crossing the North Atlantic Ocean – 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 69 knots. These winds are favorable and may get you there up to 42 minutes early.
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 6h 30min
Maximum turbulence expected per segment
Takeoff
Light
0:30-1:00
Light
1:00-1:30
Light
1:30-2:00
Light
2:00-2:30
Light
2:30-3:00
Light
3:00-3:30
Light
3:30-4:00
Light
4:00-4:30
Light
4:30-5:00
Moderate
5:00-5:30
Moderate
5:30-6:00
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
BOS
Logan International — Departure
Wind
14 kt G31 (180°)
Sky
Overcast
Temperature
3°C
Conditions
VFR — Clear conditions, no delays expected
LIS
Lisbon Humberto Delgado Airport — Arrival
Wind
7 kt (60°)
Sky
NSC
Temperature
11°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
a21n
Category
Narrow-Body Aircraft
Size
Medium
Comfort
Single-aisle mainline jets like this offer a comfortable ride. While you may feel turbulence more than on wide-body aircraft, they are engineered to handle it smoothly.
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.