Can I bring food into the USA through SFO?

A. Most meats, fruits, vegetables, plants, and seeds are prohibited or restricted due to pest and disease risks. Commercially packaged, shelf-stable snacks, baked goods, and many cheeses are generally allowed. You must declare all food items. Example: A sealed bag of chocolate is usually fine; fresh mangoes or homemade cured meats are almost always prohibited.

What is the penalty for not declaring items at customs?

A. Penalties can be severe. Under 19 U.S.C. § 1497, penalties for non-declaration can include seizure of the undeclared item(s) and a monetary penalty equal to the item's value. For intentional fraud, criminal charges may apply. In a 2023 case, a traveler at SFO faced a $2,500 fine for failing to declare a high-value watch.

How long does customs clearance take at SFO?

A. Wait times vary dramatically. For U.S. citizens/residents with Global Entry, it can be under 5 minutes. For general lines during peak hours (e.g., 1-4 PM when many international flights land), waits of 60-90 minutes are common. SFO's CBP publishes real-time wait times on their website and airport displays.

Where is the Customs and Border Protection (CBP) office at SFO?

A. The primary CBP processing area is located in the International Terminal (Terminal G), Arrivals Level, post-baggage claim. The CBP Port Director's office is at San Francisco International Airport, International Terminal, Mezzanine Level. For specific inquiries, the contact number is (650) 616-9900.

What medicines can I bring into the U.S. through San Francisco?

A. You may bring medication for personal use, but it must be in its original container with the prescription label. Controlled substances (e.g., narcotics, some ADHD medications) require a doctor's note and may have quantity limits. Declare all medications. Some foreign medications not approved by the FDA are prohibited.

Do I need to declare cash over $10,000 when entering San Francisco?

A. Yes, absolutely. Under 31 U.S.C. § 5316, you must file a FinCEN Form 105 to report currency and monetary instruments totaling over $10,000 (USD or foreign equivalent) to both U.S. Customs and Border Protection (CBP) and the Internal Revenue Service (IRS). Failure to do so can lead to seizure of all funds and criminal prosecution.

Customs Rules for Travelers Arriving in San Francisco, California: What to Know

Travelers arriving at SFO must declare all goods acquired abroad, can claim a personal exemption of $800 (for most trips) duty-free, face strict prohibitions on agricultural products and certain medicines, and must report currency over $10,000 to CBP, with non-compliance leading to fines, seizure, or legal action.

1. Real Costs, Duty Fees, and Personal Exemptions

The amount of duty you pay depends on your personal exemption and the value/type of goods. Here's the breakdown:

Key Data Point: In Fiscal Year 2023, CBP at SFO processed over 10 million international passengers and collected approximately $285 million in duties, taxes, and fees.

Personal Exemption Amounts (Duty-Free Allowance)

Travel Origin	Exemption	Conditions & Details
Most Countries (General)	$800	Per person, applies if you've been abroad >48 hrs and haven't used exemption in preceding 30 days. Includes 1 liter of alcohol (if 21+), 200 cigarettes, and 100 cigars.
U.S. Insular Possessions (e.g., Guam, USVI)	$1600	Includes 5 liters of alcohol (1L may be from non-insular sources), 1000 cigarettes.
Designated Caribbean Basin Countries	$1000	Includes 2 liters of alcohol, 200 cigarettes. Goods must be from beneficiary countries.

Duty Calculation on Excess Amounts

If your purchases exceed your exemption, duty is assessed on the excess amount. The rate is not a simple flat percentage across the board.

First $1,000 over exemption: Taxed at a flat 3% rate.
Amounts beyond that: Subject to variable Harmonized Tariff Schedule (HTS) rates specific to the item. Examples:
- Silk clothing: ~4.5%
- Most footwear: 2.5% - 10%
- Wristwatches: Varies by value, can be 6.25% + additional fees.

Example Calculation: A U.S. resident returns from France with $1,500 worth of goods (General $800 exemption). Duty is owed on $700. The first $1,000 is taxed at 3%, so duty = $700 * 0.03 = $21.

2. Actual Step-by-Step Arrival & Customs Process at SFO

Pre-Arrival (On the Plane): Complete the CBP Declaration Form 6059B (paper or electronic via MPC app). Answer all questions truthfully. (CBP Source)
Deplaning & Primary Inspection: Follow signs to "Passport Control" or "Federal Inspection." Have passport and declaration ready.
- U.S. Citizens/Residents: Use automated kiosks (if eligible) or officer line.
- Visitors (Non-Residents): Proceed to the dedicated visitor lines. Have visa/ESTA ready.
Baggage Claim: After passport stamp, collect checked luggage from the carousel in the International Terminal (G).
Customs Inspection: Proceed to the Customs Hall. Hand your declaration to a CBP Officer. They may ask questions. You may be directed to:
- Green Lane (Nothing to Declare): If you have only duty-free exempt items.
- Red Lane (Goods to Declare): If you have items over your exemption, restricted goods, or cash over $10,000.
Secondary Inspection (If Selected): Officers may examine your luggage. Be cooperative. This is where undeclared items are typically discovered.
Exit & Re-check: If you have a connecting flight, follow signs to re-check your bags with your airline. Then proceed to security for your next gate.

3. What's Allowed & Prohibited? Safety & Risk Assessment

The USDA APHIS and CBP maintain strict lists to prevent biohazards, protect agriculture, and enforce laws.

High-Risk Declaration: ALWAYS declare agricultural products, food, and plants. It's better to declare and have it inspected than to face penalties for smuggling.

Category	Generally ALLOWED (Declare!)	Generally PROHIBITED / RESTRICTED	Risk Level
Food & Plants	Commercially packaged baked goods, hard cheeses, coffee, tea, oils, certain canned goods.	Most fresh fruits/vegetables, meats/poultry, plants/soil, seeds without phytosanitary certificate. (USDA Source)	HIGH - Seizure & Fine likely
Animal Products	Fully cured hides, some wool items, cleaned feathers.	Products from endangered species (CITES), ivory, tortoiseshell, most coral, unsanctioned animal trophies.	VERY HIGH - Seizure & Legal Action
Alcohol & Tobacco	Within personal exemption limits (see table above).	Exceeding personal limits (duty owed), Cuban cigars (with exceptions), absinthe containing thujone.	MEDIUM - Duty Payment or Seizure
Counterfeit Goods	None.	All trademark-infringing items (fake designer bags, watches, etc.) are subject to seizure. (CBP IPR Source)	HIGH - Seizure & Potential Fine
Drugs & Paraphernalia	Medication for personal use (see Medication section).	Narcotics, marijuana (federally illegal despite CA law), drug paraphernalia.	VERY HIGH - Arrest & Prosecution

4. Timeline & Real Waiting Times at SFO Customs

Wait times are highly variable. Data from SFO's official dashboard shows patterns:

Peak Hours (Highest Risk): 1:00 PM - 7:00 PM, coinciding with arrivals from Asia, Europe, and Oceania. Waits can exceed 90 minutes in general lanes.
Off-Peak Hours (Lower Risk): Late night (after 10 PM) and early morning (before 10 AM). Waits often under 30 minutes.
Global Entry/MPC Users: Average wait is typically under 5 minutes at dedicated kiosks.
Visitor (Non-Resident) Lines: Often move slower due to detailed entry questions. Add 20-40% to general wait times.

Pro Tip: Use the Mobile Passport Control (MPC) app. It's free and has dedicated, faster lines at SFO. Submit your declaration while taxiing to the gate.

5. Where to Go: Local CBP Office, Hospitals & Key Roads

Customs & Border Protection (CBP) Offices

Primary Passenger Processing: International Terminal (Terminal G), Arrivals Level. Follow signs after baggage claim.
Port of San Francisco CBP Headquarters (Port Director's Office):
San Francisco International Airport, International Terminal, Mezzanine Level, San Francisco, CA 94128. Phone: (650) 616-9900.

Nearby Hospitals (In Case of Medical Emergency Post-Arrival)

Kaiser Permanente South San Francisco Medical Center: 1200 El Camino Real, South San Francisco, CA 94080. (~10 min drive).
San Mateo Medical Center: 222 W 39th Ave, San Mateo, CA 94403. (~15 min drive).

Key Road Names & Exits from SFO

Primary Access: U.S. Route 101 runs directly past the airport. Use exits for "San Francisco International Airport" or specific terminals (G, 1, 2, 3).
To Downtown SF: Take I-280 North or US-101 North from airport accesses.
Rental Car Center: Access via Airport Boulevard and Harding Road. Free AirTrain connects all terminals.

6. Fines, Penalties & Real Case Examples from SFO

Violations are taken seriously. Here are specific penalties under U.S. law:

Failure to Declare (19 U.S.C. § 1497): Penalty is often the domestic value of the undeclared article(s). The items are subject to seizure and forfeiture.
Smuggling (18 U.S.C. § 545): A felony. Can result in fines and imprisonment up to 20 years.
False Statement (18 U.S.C. § 1001): Fines and/or up to 5 years imprisonment.

Real Case Example (2023):

A traveler arriving at SFO from Hong Kong declared $300 worth of goods. A CBP secondary inspection found three undeclared luxury watches worth approximately $45,000. Result: The watches were seized under 19 U.S.C. § 1497. The traveler faced a penalty of $25,000 (mitigated from a higher amount) to secure release of the watches. This did not include potential duty owed.

Real Case Example (Agricultural - 2022):

A passenger from Vietnam did not declare a bag of fresh longan fruit and homemade pork sausages. The items were seized and destroyed by CBP and USDA. The traveler received a $1,000 civil penalty for attempting to import prohibited agricultural products.

7. Cash & Monetary Instrument Reporting Rules (Over $10,000)

The law is unequivocal. 31 U.S.C. § 5316 requires reporting of currency and monetary instruments (traveler's checks, money orders, etc.) exceeding $10,000 in total value (USD or foreign equivalent) per person/family traveling together.

What to Do: Ask a CBP officer for a FinCEN Form 105. File it truthfully. There is no tax or fee for reporting.
Consequences of Non-Reporting: The money can be seized in full. Recovery requires proving legitimate source and intended use, a lengthy legal process. Criminal charges for structuring (splitting amounts to avoid reporting) are possible.

Example: A family of three carrying $4,000 each ($12,000 total) must report because the aggregate they are carrying as a group exceeds $10,000.

8. Prescription & Medication Rules for Entry

You may bring medication for personal use, but must comply with FDA and DEA regulations.

General Rule: Keep medicine in original labeled containers from your pharmacy. Carry a copy of your prescription or a doctor's note.
Controlled Substances (e.g., opioids, stimulants): Require a valid prescription and are limited to a 90-day supply. A doctor's note is highly recommended. Some foreign medications containing controlled substances (e.g., codeine cough syrup available over-the-counter abroad) are illegal in the U.S. without a U.S. prescription.
Prohibited Medications: Drugs not approved by the FDA (e.g., certain foreign-made medications, diet pills, "natural" remedies containing controlled ingredients).
Declare All Medications: Inform the CBP officer if you have any injectable medications or significant quantities.

Resource: DEA Regulations on Travel with Controlled Substances.

9. Trusted Traveler Programs (Global Entry) at SFO

To drastically reduce wait times, consider enrolling in a CBP Trusted Traveler Program.

Global Entry: Includes TSA PreCheck. After approval, use automated kiosks at SFO. Average processing time: Application review ~4-6 months. Interview required. Enrollment Center at SFO's International Terminal. Fee: $100 for 5 years.
Mobile Passport Control (MPC): Free app. Available to U.S. and Canadian citizens. Submit passport and declaration info via app for expedited lane access.
SENTRI/FAST: For travel from Canada/Mexico.

Data Point: As of 2023, over 40% of eligible travelers at SFO used MPC or Global Entry, cutting their average processing time to under 10 minutes.

10. SFO Airport Specifics: Terminals, Vacancy, & Transit

Customs Location: All international arrivals are processed in the International Terminal (Terminal G), regardless of which airline you fly.
Connecting Flights: After clearing customs and reclaiming bags, follow signs for "Baggage Recheck" for your connecting airline. Then proceed through TSA security to your domestic departure terminal (1, 2, or 3). Allow minimum 2-3 hours between international arrival and domestic departure.
AirTrain: Free, 24/7 automated train connecting all terminals, rental car center, and BART station. Runs every 4-5 minutes.
Hotel Vacancy Rate (Airport Area): Typically high (>80%) but prices surge during major conventions. Pre-booking is advised. Use sites like Kayak or directly contact hotels on North Access Road (e.g., Grand Hyatt, Hyatt Regency, Marriott).

11. Frequently Asked Questions (FAQ)

What items must I declare to U.S. Customs at SFO?

A. You must declare all items acquired abroad, including gifts, souvenirs, and purchases. This includes: any merchandise you will sell or use in your business, duty-free items (despite the name), repairs or alterations to items taken abroad, and all fruits, vegetables, plants, seeds, soil, meats, animal products, and currency over $10,000 USD. Failure to declare can result in seizure and penalties.

How much is the customs duty tax at San Francisco airport?

A. The duty rate varies by item type and country of origin. For personal exemptions, you can bring back $800, $1600, or $1000 worth of goods duty-free depending on your travel itinerary (general, insular possessions, or certain Caribbean countries). After that, the first $1,000 worth of goods is taxed at a flat 3% rate, with subsequent amounts subject to variable rates (e.g., 2.5% for most footwear, 6.6% for ceramics).

Official Resources & Links

Legal Disclaimer

This guide is for informational purposes only and does not constitute legal advice. Customs laws and regulations are complex and subject to change. The information provided is based on U.S. Code (e.g., Title 19, 31), CBP directives, and public data as of early 2024. Travelers are solely responsible for knowing and complying with all applicable laws administered by U.S. Customs and Border Protection, the FDA, USDA, and other federal agencies. Always consult the official government resources listed above or seek advice from a qualified customs attorney for specific legal guidance. The author and publisher disclaim any liability for actions taken based on the content of this article.