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 7 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
15 pilot reports along this route
15 / 15
Reporting smooth
0 / 15
Light turbulence
0
Moderate or worse
Latest pilot reports
Smooth
ARP KLM282 6126N03223W 0347 F390 6100N03000W 0355 5900N02000W MS40 335/16 KT PHBKC QXT AME 110347 L31A
3m ago
Smooth
ARP DLH481 6207N03649W 0347 F390 6100N03000W 0412 5900N02000W MS42 147/2 KT DAIXO DDL KUS 110347 J33A
3m ago
Smooth
ARP UAL748 5500N01805W 0346 F370 5458N01500W 0357 5458N01401W MS55 253/102 KT N659UA DDL XXN 110346 F58A
4m ago
Smooth
ARP KLM672 5601N01750W 0345 F370 PIKIL 0356 SOVED MS54 256/119 KT PHAKF QXT EUA 110345 J12A
5m ago
Smooth
ARP KLM282 6131N03248W 0345 F390 6100N03000W 0355 5900N02000W MS40 342/11 KT PHBKC QXT AME 110345 L30A
5m 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
20°C
Conditions
MVFR — Reduced visibility, minor delays possible
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.