Vienna to San Francisco (VIE–SFO) — Airlines, Schedules & Connections

Austria is part of the US Visa Waiver Program. Austrian passport holders can enter the United States for up to 90 days without a visa, but must obtain an approved ESTA (Electronic System for Travel Authorization) before boarding. Apply at the official CBP site. ESTA costs USD 21, is valid for 2 years, and covers multiple entries. Passport must be valid for at least 6 months beyond the planned stay. The 90-day limit cannot be extended, and overstaying voids future ESTA eligibility.

The City Airport Train (CAT) runs non-stop between Wien Mitte station and VIE in 16 minutes (€14.90 one-way, €24.90 return). The S7 commuter rail covers the same route with stops in 30–35 minutes for €4.20.Taxis are metered but expensive; expect €35–45 from the city center. Uber and ride-shares cost €25–35. Parking at VIE runs €8–14/day in the remote lot with shuttle.

BART from SFO station (free AirTrain from any terminal to the station) to downtown San Francisco takes 30–40 minutes ($10.45 to Embarcadero). Traffic on 101 can make taxis and ride-hails much slower during peak hours; BART skips all of that. BART also reaches Oakland, Berkeley, and Millbrae for Caltrain connections.Ride-hails from SFO use a dedicated garage pickup area; follow signs. Taxis are metered; downtown SF costs $40–60. Caltrain to the Peninsula (Mountain View, Palo Alto, San Jose) requires taking BART to Millbrae station for the transfer. Rental cars are at a consolidated facility accessible by AirTrain.

Coastal fog dominates the climate pattern. The thick marine layer ("Karl the Fog") rolls into SFO from the Pacific regularly in summer (June–September), causing significant low-visibility delays even on days that appear sunny inland. Morning fog burns off by afternoon most days, but persistent IFR conditions can last all day. This is the primary flight disruption risk at SFO.

Temperatures are mild year-round (10–20°C) with little seasonal variation. Winters bring rain (December–March) and occasional atmospheric river events that cause brief but intense flooding on the 101. Summers are cool. Pack a light jacket year-round. Wind off the bay affects small aircraft approach paths.