Your Flight
We analysed more than 18,500 data points along your route from San Francisco International Airport, San Francisco to El Prat De Llobregat, Barcelona.
United Airlines
SFO
BCN
UA672
United Airlines · Live forecast
SFO
→
BCN
87
Calm Score
"A smooth ride ahead — sit back and enjoy."
11h 20m
Duration
5,175 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
Set an alert before your flight
Beta
You still have 19 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 SFO → BCN
8 pilot reports along this route
8 / 8
Reporting smooth
0 / 8
Light turbulence
0
Moderate or worse
Latest pilot reports
Smooth
ARP ACA934 5835N03900W 0546 F370 5900N03000W 0623 5830N02000W MS52 025/81 KT CGXZD DDL UAK 170546 J71A
4m ago
Smooth
ARP AAL293 5743N04100W 0545 F360 5430N05000W 0625 NEEKO MS54 030/79 KT N823AN QXT AOE 170545 L17A
5m ago
Smooth
ARP UAL909 5437N02132W 0545 F390 5430N02000W 0551 DOGAL MS40 242/30 KT N45905 DDL XXN 170545 L20A
5m ago
Smooth
ARP AIC191 5626N02145W 0545 F320 5800N03000W 0619 5700N04000W MS39 233/13 KT VTAER QXT EUA 170545 F43A
5m ago
Smooth
ARP UAL288 5516N02156W 0544 F350 5500N02000W 0552 RESNO MS40 245/23 KT N14106 DDL IG1 170544 F91A
6m ago
AI-powered flight briefing
18,500 data points analyzed
· HIGH confidence
Your Journey Beta
9 hours 45 minutes and 10 hours 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 Sierra Nevada, 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 calm conditions around the airport.
Winds Aloft
Winds at cruising altitude are about 36 knots. These winds are favorable and may get you there up to 11 minutes early.
Landing
Landing should feel smooth 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 20min
Maximum turbulence expected per segment
Takeoff
Smooth
0:30-1:00
Light
1:00-1:30
Light
1:30-2:00
Light
2:00-2:30
Light
2:30-3:00
Smooth
3:00-3:30
Smooth
3:30-4:00
Smooth
4:00-4:30
Light
4:30-5:00
Light
5:00-5:30
Light
5:30-6:00
Light
6:00-6:29
Light
6:29-6:58
Light
6:58-7:27
Light
7:27-7:56
Light
7:56-8:25
Light
8:25-8:54
Light
8:54-9:23
Light
9:23-9:52
Moderate
9:52-10:21
Light
10:21-10:50
Light
Landing
Smooth
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
SFO
San Francisco International Airport — Departure
Wind
12 kt (270°)
Sky
Clear
Temperature
16°C
Conditions
VFR — Clear conditions, no delays expected
BCN
El Prat De Llobregat — Arrival
Visibility
6 mi
Wind
5 kt (350°)
Sky
NSC
Temperature
22°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
Tomorrow — conditions may change
a332
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.