LIS
Lisbon Humberto Delgado Airport
✈
IAD
Washington Dulles International Airport
Distance
3,113 nm
Altitude
40,000 ft
Est. Duration
7h 16m
Route Information
Departure

LIS (LIS)

Distance

5,765.8 km (3,113.3 nautical miles)

Arrival

IAD (IAD)

Flight Time

510 minutes (8h 30m)

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. 3 bumpier stretches, about 510 min in total.
  • 0:00-0:30 · Takeoff · light bumps (~30 min) Light movement. Drinks may ripple.
  • 0:30-1:00 · moderate bumps (~30 min) Noticeable bumps. The seatbelt sign is likely on.
  • 1:00-8:30 · Landing · light bumps (~450 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 LIS → IAD
2 pilot reports along this route
2 / 2
Reporting smooth
0 / 2
Light turbulence
0
Moderate or worse
Latest pilot reports
Smooth
ARP ELY017 4553N04258W 1126 F340 4401N05000W 1209 4201N06001W MS52 295/71 KT 4XEDL QXT AME 301126 L62A
7m ago
Smooth
ARP RAM206T 4514N04144W 1107 F400 4600N05000W 1157 RELIC MS61 290/62 KT CNRGB QXT AOE 301107 L94A
26m 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 Washington Dulles International Airport, Dulles.

Your Journey Beta

39 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 52 knots. These winds may delay arrival by up to 41 minutes.

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 8h 30min
Maximum turbulence expected per segment
Takeoff
Light
0:30-1:00
Moderate
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
Light
5:00-5:30
Light
5:30-6:00
Light
6:00-6:30
Light
6:30-7:00
Light
7:00-7:30
Light
7:30-8:00
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
LIS Lisbon Humberto Delgado Airport - Departure
Wind
7 kt (30°)
Sky
NSC
Temperature
21°C
Conditions
VFR - Clear conditions, no delays expected
IAD Washington Dulles International Airport - Arrival
Wind
4 kt (210°)
Sky
Few
Temperature
11°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 → IAD, with soft clouds where today's forecast shows bumpier air. Nothing to crash into.