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
88
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
Notifications not available
This flight has already departed.
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 SLM993 4932N00817W 1154 F360 TAMEL 1210 4500N01500W MS52 258/110 KT DAUSC QXS LEQ 031155 J18A
3m ago
Smooth
ARP JBU842 5507N01603W 1153 F320 5530N02000W 1211 5500N03000W MS48 224/7 KT N4083J QXT IGW 031154 J32A
4m ago
Smooth
ARP UAL995 5730N01713W 1153 F360 5801N02000W 1204 5801N03000W MS44 335/9 KT N17002 DDL XXF 031153 L38A
4m ago
Smooth
ARP DAL87 5531N02002W 1152 F360 5501N03000W 1237 5401N04000W MS44 264/17 KT N851NW DDL IG1 031153 J30A
5m ago
Smooth
ARP UAL760 5733N01741W 1152 F390 SUNOT 1203 KESIX MS42 242/7 KT N35953 DDL XXN 031152 L73A
5m ago
AI-powered flight briefing
17,000 data points analyzed
· HIGH confidence
Your Journey Beta
1 hour 40 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 41 knots. These winds may delay arrival by up to 45 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
Light
1:00-1:30
Light
1:30-2:00
Moderate
2:00-2:30
Light
2:30-2:59
Light
2:59-3:28
Light
3:28-3:57
Smooth
3:57-4:26
Smooth
4:26-4:55
Smooth
4:55-5:24
Light
5:24-5:53
Light
5:53-6:22
Light
6:22-6:51
Light
6:51-7:20
Light
7:20-7:49
Light
7:49-8:18
Light
8:18-8:47
Light
8:47-9:16
Light
9:16-9:45
Smooth
9:45-10:14
Light
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
10 kt (210°)
Sky
Few
Temperature
23°C
Conditions
VFR — Clear conditions, no delays expected
SEA
Seattle–Tacoma International Airport — Arrival
Wind
8 kt (220°)
Sky
Broken
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.