Driving to San Francisco International: the 101 approach and parking

San Francisco International Airport (SFO) sits about 15 miles by road from downtown San Francisco, CA — roughly 24 min of driving, or 11.0 miles in a straight line.

SFO sits on the bay shore south of the city, on the busiest road corridor in northern California. The airport is well organized and easy to understand. The approach to it is the part that decides whether the trip is fifteen minutes or fifty.

Getting there by road

US 101 runs directly past the airport and carries the overwhelming majority of its traffic. Exits into the terminal area are signed from both directions and the transition from freeway to terminal roadway is short. In that sense the airport is easy to reach.

The complication is 101 itself. It is the main artery down the peninsula, it carries commuters in both directions, and it is busy for far more of the day than a rush-hour model would suggest. Northbound in the morning and southbound in the evening are the worst, but neither direction is reliably quick between about seven and ten or three and seven.

I-280 is the alternative spine down the peninsula, connected to 101 near the airport by the short I-380 link. From the western side of San Francisco, 280 and then 380 is often the better route even though it looks less direct, and it is worth knowing about as a fallback when 101 has stopped moving.

From the East Bay you cross a bridge first. The crossings are tolled and the tolls are collected electronically, so nothing stops and nothing is paid in cash. Which bridge to use depends on where you start — the southern crossings put you onto the peninsula nearer the airport, while going through San Francisco means adding city traffic to the freeway traffic.

The terminal ring

The terminals are arranged in a ring around a central parking area, with the International Terminal at one end and the domestic terminals numbered 1, 2 and 3 continuing round from it. Boarding areas inside them are identified by letter.

The loop layout is forgiving in one way and unforgiving in another. Driving to the wrong terminal is recoverable, because you simply keep going and come back around. But a full circuit of the terminal roadway during a busy period is not a two-minute detour, and the roadway is split by level with departures above and arrivals below. Know both the terminal and the level before you are committed.

AirTrain

AirTrain is the automated train that holds the site together. It runs on two loops: one that stays within the terminal area, and one that continues out to the Rental Car Center and the long-term parking. Between them they connect every terminal, the garages, the rental cars and the BART station.

If you are collecting or returning a rental car, or parking in the outer lots, AirTrain is a compulsory leg of your trip rather than a convenience. It is frequent and reliable, but it takes time, and it is reliably the step people leave out when they calculate backwards from their boarding time.

Meeting an arriving passenger

There is a designated waiting area away from the terminals for drivers collecting arrivals, and using it beats circling the loop. SFO is also an airport where arrival times move around, because low cloud and the way the runways are laid out can hold aircraft up on days that look perfectly clear from the ground. Check the flight rather than the timetable before you leave the house, and plan to wait somewhere rather than to time it exactly.

Parking

The garages inside the terminal ring are the closest thing to parking at the door, and they are priced for it. Long-term parking sits further out and is reached by AirTrain.

The break-even point comes quickly. For a same-day return or a single night the central garages make sense. Beyond that, the outer lots win clearly, and the train ride at each end is a small price for the difference. As at any airport of this size, the useful preparation is deciding which one you want before you arrive, because the signs on the loop are written for people who already know. Make a note of your level and row before you walk away; the central garages are large and one floor looks much like the next.

The BART option

BART runs into the airport and connects north into San Francisco and east under the bay, with AirTrain covering the last stretch to the other terminals. Caltrain meets the same system a short distance away at Millbrae, which brings the peninsula and San Jose into reach.

The argument for the train is not that it is fast. It is that it is unaffected by 101. For a solo trip with a carry-on it is usually the better decision; for an early departure with luggage and children it usually is not.

Driving in from further out

The Bay Area has three sizeable airports and people routinely drive past one to use another, because the flight schedule matters more than the mileage. Oakland and San Jose are both easier to drive into than SFO. SFO has the broadest choice of destinations, especially long-haul, which is why the long-term lots are the size they are.

Beyond the region, Sacramento comes down I-80, the central coast and Monterey come up 101, and the Central Valley cities come across I-580 or SR 152. In all of those cases the open-road portion is predictable and the last thirty miles are not, which is the single most useful thing to know when planning the timing.

For the same treatment of the alternatives, see the other airport guides.

Driving to SFO from nearby cities

Estimated road distances and drive times to the terminal area. Add your own margin for parking, the shuttle and check-in — these figures cover the drive only.

Every figure here is an estimated road distance, worked out the same way as the rest of the site — how the estimate works. Distances in kilometers: downtown San Francisco, CA is about 24 km away.