Your Flight
We analysed more than 17,000 data points along your route from Seattle–Tacoma International Airport, Seattle to El Prat De Llobregat, Barcelona.
Delta Air Lines
SEA
BCN
DL248
Delta Air Lines · Live forecast
SEA
→
BCN
88
Calm Score
"A smooth ride ahead — sit back and enjoy."
10h 35m
Duration
4,713 nm
Distance
39,000 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 SEA → BCN
13 pilot reports along this route
13 / 13
Reporting smooth
0 / 13
Light turbulence
0
Moderate or worse
Latest pilot reports
Smooth
ARP AFR6732 5600N02002W 2256 F340 5700N03000W 2339 5730N04000W MS48 340/37 KT FGUOB QXS BRR 162256 F15A
3m ago
Smooth
ARP FDX3 6002N03050W 2252 F340 6000N04000W 2329 6000N05000W MS47 304/39 KT N847FD QXT AME 162252 F49A
7m ago
Smooth
ARP BAW247 4938N00720W 2248 F340 TAMEL 2304 GONAN MS50 172/3 KT GXWBL DDL BES 162248 J12A
11m ago
Smooth
ARP AFR6732 5526N01700W 2242 F340 5600N02000W 2255 5700N03000W MS50 336/17 KT FGUOB QXS BRR 162242 F13A
17m ago
Smooth
ARP AAL217 5532N02017W 2237 F320 5531N03000W 2319 5501N04000W MS42 335/32 KT N735AT QXT AOE 162237 F28A
22m ago
AI-powered flight briefing
17,000 data points analyzed
· HIGH confidence
Your Journey Beta
1 hour 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 over the Rocky Mountains, crossing the North Atlantic Ocean, and over the Pyrenees – 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 33 knots. These winds are favorable and may get you there up to 25 minutes early.
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 10h 35min
Maximum turbulence expected per segment
Takeoff
Light
0:30-0:59
Light
0:59-1:28
Moderate
1:28-1:57
Light
1:57-2:26
Light
2:26-2:55
Light
2:55-3:24
Light
3:24-3:53
Smooth
3:53-4:22
Smooth
4:22-4:51
Light
4:51-5:20
Light
5:20-5:49
Smooth
5:49-6:18
Light
6:18-6:47
Light
6:47-7:16
Light
7:16-7:45
Smooth
7:45-8:13
Light
8:13-8:41
Light
8:41-9:09
Light
9:09-9:37
Smooth
9:37-10:05
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
SEA
Seattle–Tacoma International Airport — Departure
Wind
10 kt G18 (220°)
Sky
Broken
Temperature
16°C
Conditions
IFR — Low visibility, delays likely
BCN
El Prat De Llobregat — Arrival
Visibility
6 mi
Wind
3 kt (40°)
Sky
Few
Temperature
27°C
Conditions
VFR — Clear conditions, no delays expected
Your flight details
Departure timing and aircraft information
Evening Flight Departure
Time of day
Evening Flight
Tip
Evening and night flights typically offer smoother conditions as thermal activity subsides and the atmosphere stabilizes after sunset.
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.