San Francisco International Airport is a primary gateway for Asia-Pacific traffic and handles more direct flights from mainland China than almost any other U.S. airport outside of LAX. SFO also serves as a major hub for traffic from South Korea, Japan, the Philippines, Southeast Asia, and the Pacific Islands. The San Francisco Field Office covers SFO and Oakland International Airport, together forming one of the more active currency enforcement regions on the West Coast. This article documents some of the largest and most notable currency seizures at SFO and explains what CBP’s enforcement posture here means for travelers.
⚠️ Has CBP seized your cash at SFO? If CBP has seized your currency at San Francisco International Airport or Oakland International Airport, visit our San Francisco currency seizure page for information on your options — or call us at (734) 855-4999 for a free consultation.
Why SFO Generates Consistent Currency Seizure Activity
SFO’s enforcement profile is dominated by Asia-Pacific arrivals. The Bay Area has one of the largest Chinese-American communities in the United States — both in San Francisco proper and across Silicon Valley — and travelers arriving from mainland China, Hong Kong, and Taiwan carrying cash for real estate purchases, business investments, or family support are a documented enforcement demographic at SFO. The pattern of undeclared currency from Chinese nationals at U.S. airports rising significantly over the past decade has been well-documented, and SFO’s position as one of the primary gateways for that traffic makes it a consistent enforcement location.
South Korean and Filipino travelers are also documented enforcement demographics at SFO. South Korean business travelers carrying cash for investment or commercial transactions, and Filipino travelers sending remittances home, both appear in the SFO enforcement record. The Bay Area’s large Filipino-American community — one of the largest in the United States — makes SFO a significant port for outbound currency enforcement on Manila-bound flights.
Notable Large Currency Seizures at SFO
Rising Enforcement on China-Originating Arrivals
CBP at SFO has documented a sustained increase in currency seizures from travelers arriving from mainland China — reflecting both increased enforcement attention and increased traveler volume on those routes. Individual cases typically involve amounts in the $20,000 to $150,000 range — currency carried for real estate purchases, business transactions, or family support that was not declared on the FinCEN 105. Many of these cases involve entirely legitimate funds, and the petition process — supported by documentation of the source and intended use of the funds — is the appropriate path to recovery. The San Francisco FP&F office handles a high volume of these cases annually.
$147,845 Outbound — SFO Outbound Operations
CBP data from the San Francisco Field Office documents a single outbound enforcement action involving $147,845 — reflecting the scale that individual SFO enforcement cases can reach on outbound flights to Asia. Outbound enforcement at SFO focuses primarily on currency departing the United States on Asia-bound flights, and the amounts involved in individual outbound cases are often larger than typical inbound airport seizures — reflecting both the scale of funds being transferred to Asia and the organized nature of some outbound cash flows.
The Legitimate Traveler Risk at SFO
As at Minneapolis, the enforcement demographic at SFO includes a substantial proportion of entirely legitimate travelers. Chinese buyers purchasing Bay Area real estate with cash, Korean business owners carrying funds for commercial transactions, Filipino workers sending money to family members in Manila — these are people with legitimate purposes who may not know about or understand the U.S. currency reporting requirement. Those cases are recoverable through the petition process with the right legal representation and documentation.
The key documentation for an SFO petition involving China-originating funds is evidence of the funds’ Chinese source — Chinese bank statements, real estate transaction documents, business income records — combined with documentation of the intended use in the United States. A traveler who can demonstrate that the currency represents the proceeds of a Chinese property sale being brought to the United States for a U.S. real estate purchase has a strong legitimate source and intended use argument. The challenge is presenting that documentation in the format and with the specificity that CBP’s FP&F office requires.
What to Do If CBP Seized Your Cash at SFO
If CBP has seized your currency at San Francisco International Airport or Oakland International, contact us for a free consultation. Read our customs money seizure legal guide or watch the video series. See our currency seizure case outcomes. Call us at (734) 855-4999, send a text message, or reach us on WhatsApp. You can also contact us online.