Spata-Artemida to San Francisco (ATH–SFO) — Airlines, Schedules & Connections

Greece is part of the US Visa Waiver Program. Greek passport holders must obtain an approved ESTA before boarding a US-bound flight. ESTA costs $21, is valid for 2 years or until your passport expires, and allows stays of up to 90 days per visit. You need an e-passport with a biometric chip.

Apply at least 72 hours before departure through the official CBP website. Passport must be valid for at least 6 months beyond your planned stay unless you qualify for the six-month club exemption.

Metro Line 3 (blue line) connects Monastiraki and Syntagma stations in central Athens to the airport in 40 minutes for €10 one-way (€18 return, valid 48 hours). Trains run every 30 minutes from roughly 05:30 to midnight. Suburban rail (Proastiakos) also serves the airport, useful from Piraeus and the northern suburbs.

Express buses (X93 to Kifissos Bus Terminal, X95 to Syntagma, X96 to Piraeus) run 24/7 for €6.20 and take 60–90 minutes depending on traffic. Taxis from the city centre are metered with a flat rate of €40 (day) or €55 (night/holidays) from the airport to downtown. Ride-shares are limited; metered taxis are the standard option.

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.