Do you have to go through customs on a layover in SFO?

Navigating SFO Layovers: Do You Need to Clear Customs?

Landing at San Francisco International Airport (SFO) after an international flight with a connecting domestic flight often leaves travelers wondering: do I have to go through customs? The short answer is yes, if your initial flight is international. You will absolutely need to clear U.S. Customs and Border Protection (CBP) before proceeding to your connecting flight.

This process occurs within SFO's Federal Inspection Services (FIS) area. Upon arrival at the gate, follow signage directing you to the CBP processing area. Be prepared to present your passport, visa (if required), customs declaration form (if applicable), and any other necessary travel documents. CBP officers will inspect your documents and may ask you questions about your travel plans and the contents of your luggage. This is a standard procedure for all international arrivals in the United States.

After successfully clearing CBP, you will exit the Arrivals Hall. At this point, you're essentially entering the domestic terminal. This means you'll need to follow the usual domestic airport procedures: retrieve your checked baggage (if any), proceed through security checkpoints (if necessary, depending on your connecting flight and airline), and find your gate for your onward journey. Remember that even though you've cleared customs, you still need sufficient time to navigate the airport and make your connecting flight. Factor in potential delays during customs processing and allow ample time between flights.

Key Considerations:

• International to Domestic: The necessity of clearing CBP applies only to flights originating from an international location. A layover between two domestic flights does not require customs processing.
• Connecting Flight Time: Ensure you have adequate time between your international arrival and domestic departure to account for CBP processing, baggage claim (if applicable), and navigating the airport. Check with your airline for recommended minimum connection times.
• Pre-clearance: Some international airports offer U.S. CBP pre-clearance. If your originating flight departs from an airport with this service, you might clear customs before boarding your flight to SFO, thus avoiding the process upon arrival. Check with your airline to see if pre-clearance is available for your flight.

While navigating an international arrival with a connecting flight can seem daunting, understanding the process beforehand can alleviate stress. Familiarize yourself with SFO's layout, check the CBP website for updated information, and allow plenty of time to ensure a smooth transition to your connecting flight. Remember to stay alert for signage and ask for assistance if needed; airport personnel are there to help guide you.