BOS
Logan International
✈
LIS
Lisbon Humberto Delgado Airport
Distance
2,767 nm
Altitude
39,000 ft
Est. Duration
6h 29m
Route Information
Departure

BOS (BOS)

Distance

5,125.2 km (2,767.4 nautical miles)

Arrival

LIS (LIS)

Flight Time

395 minutes (6h 35m)

Flight Profile

Cruise Altitude: 39,000 ft (Flight Level 390)

Route calculated using great circle navigation

Turbulence comfort along route
Comfort score combines turbulence probability with intensity, higher means rougher
Smooth Light Moderate Severe
Your flight, stretch by stretch
Some bumps expected. 3 bumpier stretches, about 283 min in total.
  • 0:00-1:54 · Takeoff · light bumps (~114 min) Light movement. Drinks may ripple.
  • 1:54-2:50 · smooth
  • 2:50-4:42 · light bumps (~112 min) Light movement. Drinks may ripple.
  • 4:42-5:38 · smooth
  • 5:38-6:35 · Landing · light bumps (~57 min) Light movement. Drinks may ripple.
💙
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 BOS → LIS
15 pilot reports along this route
13 / 15
Reporting smooth
1 / 15
Light turbulence
1
Moderate or worse
Latest pilot reports
Smooth
ARP ELY002 4608N05417W 0104 F350 PORTI 0115 4659N04959W MS49 257/57 KT 4XEDC QXS YYT 150104 L77A
1m ago
Smooth
ARP ITY603 4521N04835W 0102 F390 4700N04000W 0144 4900N03000W MS50 274/55 KT EIEJO QXS YYT 150103 J77A
3m ago
Smooth
ARP BEL52B 4530N05418W 0101 F400 4547N05204W 0112 4600N05000W MS49 255/45 KT OOSFE QXT AOE 150101 J38A
4m ago
Smooth
ARP DAL182 4553N04610W 0100 F370 4700N04000W 0131 4900N03000W MS52 271/47 KT N826NW DDL IG1 150102 J32A
5m ago
Smooth
ARP DAL244 4511N04443W 0059 F350 4600N04000W 0123 4800N03000W MS49 283/53 KT N169DZ QXT IGW 150100 F66A
6m ago
AI-powered flight briefing
10,000 data points analyzed · HIGH confidence
Your Flight

We analysed more than 10,000 data points along your route from Logan International, Boston to Lisbon Humberto Delgado Airport, Lisbon.

Your Journey Beta

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 60 knots. These winds are favorable and may get you there up to 36 minutes early.

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
Live data from ECMWF global forecast models · 12 atmospheric pressure levels · Updated every 6 hours
Flight Timeline 6h 35min
Maximum turbulence expected per segment
Takeoff
Light
0:30-0:58
Light
0:58-1:26
Light
1:26-1:54
Light
1:54-2:22
Smooth
2:22-2:50
Smooth
2:50-3:18
Light
3:18-3:46
Light
3:46-4:14
Light
4:14-4:42
Light
4:42-5:10
Smooth
5:10-5:38
Smooth
5:38-6:05
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
BOS Logan International - Departure
Wind
12 kt G20 (290°)
Sky
Scattered
Temperature
19°C
Conditions
VFR - Clear conditions, no delays expected
LIS Lisbon Humberto Delgado Airport - Arrival
Wind
10 kt (320°)
Sky
NSC
Temperature
23°C
Conditions
VFR - Clear conditions, no delays expected
Your flight details
Departure timing and aircraft information
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. Glide BOS → LIS, with soft clouds where today's forecast shows bumpier air. Nothing to crash into.