LIS
Lisbon Humberto Delgado Airport
✈
BOS
Logan International
Distance
2,767 nm
Altitude
40,000 ft
Est. Duration
6h 29m
Route Information
Departure

LIS (LIS)

Distance

5,125.2 km (2,767.4 nautical miles)

Arrival

BOS (BOS)

Flight Time

455 minutes (7h 35m)

Flight Profile

Cruise Altitude: 40,000 ft (Flight Level 400)

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. 4 bumpier stretches, about 455 min in total.
  • 0:00-4:45 · Takeoff · light bumps (~285 min) Light movement. Drinks may ripple.
  • 4:45-5:13 · moderate bumps (~28 min) Noticeable bumps. The seatbelt sign is likely on.
  • 5:13-7:05 · light bumps (~112 min) Light movement. Drinks may ripple.
  • 7:05-7:35 · Landing · moderate bumps (~30 min) Noticeable bumps. The seatbelt sign is likely on.
💙
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 → BOS
7 pilot reports along this route
7 / 7
Reporting smooth
0 / 7
Light turbulence
0
Moderate or worse
Latest pilot reports
Smooth
ARP KLM163 4506N02944W 1219 F360 4500N03000W 1220 3900N04000W MS51 298/39 KT PHBKD QXT AME 301219 L64A
4m ago
Smooth
ARP DAL127 4601N03946W 1218 F330 4600N04000W 1219 4600N05000W MS51 304/71 KT N829MH QXT AOE 301218 F66A
5m ago
Smooth
ARP TSC253 4400N02456W 1217 F320 4401N02500W 1218 4501N03000W MS48 207/45 KT CGOKC QXT IGW 301218 J82A
6m ago
Smooth
ARP NOS891 4353N02309W 1206 F410 4500N02000W 1223 4800N01000W MS52 335/42 KT EINEO QXT AME 301206 L02A
17m ago
Smooth
ARP DAL127 4605N03732W 1204 F330 4600N04000W 1220 4600N05000W MS52 299/79 KT N829MH QXT AOE 301204 F65A
19m 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 Lisbon Humberto Delgado Airport, Lisbon to Logan International, Boston.

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 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 53 knots. These winds may delay arrival by up to 36 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 35min
Maximum turbulence expected per segment
Takeoff
Light
0:30-0:59
Light
0:59-1:28
Light
1:28-1:57
Light
1:57-2:25
Light
2:25-2:53
Light
2:53-3:21
Light
3:21-3:49
Light
3:49-4:17
Light
4:17-4:45
Light
4:45-5:13
Moderate
5:13-5:41
Light
5:41-6:09
Light
6:09-6:37
Light
6:37-7:05
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
7 kt (30°)
Sky
NSC
Temperature
21°C
Conditions
VFR - Clear conditions, no delays expected
BOS Logan International - Arrival
Wind
10 kt (260°)
Sky
Broken
Temperature
14°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 LIS → BOS, with soft clouds where today's forecast shows bumpier air. Nothing to crash into.