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

500 minutes (8h 20m)

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 471 min in total.
  • 0:00-3:58 · Takeoff · light bumps (~238 min) Light movement. Drinks may ripple.
  • 3:58-4:27 · moderate bumps (~29 min) Noticeable bumps. The seatbelt sign is likely on.
  • 4:27-5:54 · light bumps (~87 min) Light movement. Drinks may ripple.
  • 5:54-6:23 · smooth
  • 6:23-8:20 · Landing · light bumps (~117 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
7 pilot reports along this route
6 / 7
Reporting smooth
0 / 7
Light turbulence
1
Moderate or worse
Latest pilot reports
Smooth
ARP IBE02WZ 4404N04028W 1522 F340 4500N05000W 1624 RAFIN MS54 295/63 KT ECONR DDL IG1 301523 J08A
3m ago
Smooth
ARP UAL943 4519N03412W 1520 F350 4530N04000W 1554 4500N05000W MS56 306/65 KT N216UA DDL XXN 301520 F49A
5m ago
Moderate
MDT UA /OV MDT/TM 1517/FL050/TP E145/SK SCT050/TB MOD TURB
8m ago
Smooth
ARP UAL145 4423N03253W 1515 F350 4500N04000W 1601 4600N05000W MS57 312/59 KT N19136 DDL IG1 301516 F50A
10m ago
Smooth
ARP VJT827 4529N03308W 1515 F430 4400N04000W 1555 4000N05000W MS55 284/33 KT 9HVJJ DDL XXH 301515 M99A
10m 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

4 hours 20 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 53 knots. These winds may delay arrival by up to 38 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 20min
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
3:00-3:29
Light
3:29-3:58
Light
3:58-4:27
Moderate
4:27-4:56
Light
4:56-5:25
Light
5:25-5:54
Light
5:54-6:23
Smooth
6:23-6:52
Light
6:52-7:21
Light
7:21-7:50
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
5 kt G16 (80°)
Sky
NSC
Temperature
23°C
Conditions
VFR - Clear conditions, no delays expected
IAD Washington Dulles International Airport - Arrival
Wind
13 kt G21 (320°)
Sky
Few
Temperature
20°C
Conditions
VFR - Clear conditions, no delays expected
Your flight details
Departure timing and aircraft information
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:

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.