Your Flight
We analysed more than 17,000 data points along your route from El Prat De Llobregat, Barcelona to Seattle–Tacoma International Airport, Seattle.
Delta Air Lines
BCN
SEA
DL249
Delta Air Lines · Live forecast
BCN
→
SEA
85
Calm Score
"A smooth ride ahead — sit back and enjoy."
11h 13m
Duration
4,713 nm
Distance
40,000 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 9 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 BCN → SEA
7 pilot reports along this route
7 / 7
Reporting smooth
0 / 7
Light turbulence
0
Moderate or worse
Latest pilot reports
Smooth
ARP KLM120 6212N03724W 0210 F370 6100N03000W 0238 5900N02000W MS44 275/7 KT PHAKE QXT AOE 110210 J87A
4m ago
Smooth
ARP UAL385 5502N01726W 0201 F350 RESNO 0210 NETKI MS52 260/103 KT N67058 DDL X4E 110201 F26A
13m ago
Smooth
ARP SWR3W 5502N01801W 0159 F380 RESNO 0210 NETKI MS59 253/112 KT HBJHA DDL XXF 110159 J56A
15m ago
Smooth
ARP GTI8809 5609N02105W 0159 F320 5700N03000W 0243 5700N04000W MS45 259/116 KT N498MC DDL IG1 110200 F63A
15m ago
Smooth
ARP UAL30 5502N01746W 0157 F350 RESNO 0207 NETKI MS51 258/98 KT N662UA DDL XXN 110157 F24A
17m ago
AI-powered flight briefing
17,000 data points analyzed
· HIGH confidence
Your Journey Beta
34 minutes, 2 hours, and 7 hours 35 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 over the Pyrenees, crossing the North Atlantic Ocean, and over the Rocky Mountains – these areas can sometimes cause 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 47 knots. These winds may delay arrival by up to 43 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
Flight Timeline 11h 13min
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
Moderate
2:30-2:59
Light
2:59-3:28
Light
3:28-3:57
Light
3:57-4:26
Smooth
4:26-4:55
Smooth
4:55-5:24
Smooth
5:24-5:53
Smooth
5:53-6:22
Light
6:22-6:51
Light
6:51-7:20
Light
7:20-7:49
Moderate
7:49-8:18
Light
8:18-8:47
Light
8:47-9:16
Light
9:16-9:45
Smooth
9:45-10:14
Smooth
10:14-10:43
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
BCN
El Prat De Llobregat — Departure
Wind
8 kt (180°)
Sky
Scattered
Temperature
21°C
Conditions
VFR — Clear conditions, no delays expected
SEA
Seattle–Tacoma International Airport — Arrival
Wind
8 kt (290°)
Sky
Few
Temperature
17°C
Conditions
VFR — Clear conditions, no delays expected
Your flight details
Departure timing and aircraft information
Morning Flight Departure
Time of day
Morning Flight
Tip
Morning flights typically experience smoother conditions as the atmosphere is more stable and thermal turbulence hasn't yet developed.
When
Today
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.