Your Flight
We analysed more than 18,500 data points along your route from El Prat De Llobregat, Barcelona to San Francisco International Airport, San Francisco.
Level
BCN
SFO
LL2621
Level · Live forecast
BCN
→
SFO
84
Calm Score
"A smooth ride ahead — sit back and enjoy."
12h 50m
Duration
5,175 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
Your flight departs in less than 6 hours. The forecast is unlikely to change significantly at this point.
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 → SFO
15 pilot reports along this route
15 / 15
Reporting smooth
0 / 15
Light turbulence
0
Moderate or worse
Latest pilot reports
Smooth
ARP GTI9965 5955N04122W 1155 F390 5900N05000W 1232 AVUTI MS40 263/27 KT N640GT DDL UAK 031155 F70A
3m ago
Smooth
ARP SLM993 4932N00817W 1154 F360 TAMEL 1210 4500N01500W MS52 258/110 KT DAUSC QXS LEQ 031155 J18A
4m ago
Smooth
ARP VIR109V 5518N02553W 1154 F370 5500N03000W 1212 5400N04000W MS45 267/21 KT GVGEM DDL XXF 031154 J27A
4m ago
Smooth
ARP UAL243 5422N02525W 1154 F370 5402N03000W 1216 5302N04001W MS42 274/36 KT N654UA DDL XXN 031154 F04A
4m ago
Smooth
ARP AAL41 5431N02032W 1153 F390 5402N03000W 1236 5301N04001W MS43 278/30 KT N880BJ DDL XXF 031153 L11A
5m ago
AI-powered flight briefing
18,500 data points analyzed
· HIGH confidence
Your Journey Beta
1 hour 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, over the Rocky Mountains, and over the Sierra Nevada – 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 46 knots. These winds may delay arrival by up to 57 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 12h 50min
Maximum turbulence expected per segment
Takeoff
Light
0:30-1:00
Light
1:00-1:30
Moderate
1:30-2:00
Light
2:00-2:30
Light
2:30-3:00
Light
3:00-3:30
Light
3:30-4:00
Smooth
4:00-4:30
Smooth
4:30-5:00
Smooth
5:00-5:30
Light
5:30-6:00
Light
6:00-6:30
Light
6:30-7:00
Light
7:00-7:30
Light
7:30-7:59
Light
7:59-8:28
Light
8:28-8:57
Light
8:57-9:26
Light
9:26-9:55
Light
9:55-10:24
Light
10:24-10:53
Smooth
10:53-11:22
Light
11:22-11:51
Light
11:51-12:20
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
SFO
San Francisco International Airport — Arrival
Wind
20 kt G30 (280°)
Sky
Few
Temperature
13°C
Conditions
IFR — Low visibility, delays likely
Your flight details
Departure timing and aircraft information
Afternoon Flight Departure
Time of day
Afternoon Flight
Tip
Afternoon flights may encounter more turbulence due to thermal activity as the sun heats the ground, creating rising air currents.
When
Today
airbus a330-202
Category
Wide-Body Aircraft
Size
Large
Comfort
Large, twin-aisle aircraft like this generally provide the smoothest ride through turbulence due to their size, weight, and advanced stabilization systems.
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.