Quick answer
A U.S. airport connection normally requires the passenger to be admissible to the United States even without leaving the terminal. C-1 is for immediate and continuous transit. A traveler who already has a valid B visa may be able to use it for transit, while an eligible Visa Waiver Program passport holder may use ESTA. The document follows passport and purpose, not Brazilian residence or the length of the layover alone.
There is no neutral international transfer
Passengers arriving in the United States normally complete immigration and customs at the first port of entry. Baggage may need to be collected and rechecked. Remaining in the airport does not remove the legal admission event.
The airline therefore checks U.S. documentation before departure from Brazil. A confirmed onward ticket to Canada, Mexico or another country cannot replace a visa or ESTA.
When C-1 fits the itinerary
The C category covers immediate and continuous transit through the United States to another country. Official guidance refers to a reasonably expeditious departure, a prearranged itinerary and no unreasonable layover privilege.
The applicant completes DS-160, pays the US$185 fee and may need to show onward permission, funding, residence and intent to depart. C-1 does not authorize tourism, ordinary visits, study or work.
Using a valid B visa or ESTA
The State Department says a traveler who already holds a valid visitor B visa may be able to use it for transit. The visa must remain valid and the traveller must be admissible. Applying for C-1 simply because the ticket says connection may be unnecessary.
Citizens of participating Visa Waiver Program countries may transit with an approved ESTA if all VWP conditions are met. A Brazilian passport alone is not eligible; foreign residence in Brazil does not change passport eligibility.
Long layovers and airport changes
An operational overnight can still be related to transit, but sightseeing or visiting friends introduces a visitor purpose. A long voluntary stop should be analysed for B status rather than described artificially as immediate transit.
Separate tickets, airport changes, baggage collection and tight connections add operational risk. Admission, secondary inspection and customs can take longer than airline minimum connection times.
Crewmembers joining a vessel or aircraft
A crewmember traveling as a passenger to join a ship or aircraft normally also needs D status, frequently issued as C1/D. Employment, vessel and joining instructions should match the application.
A regular passenger should not request C1/D for broader access. The category is tied to qualifying crew activity, not convenience.
Admission and missed flights
A visa or ESTA never guarantees admission. CBP may conduct further inspection, and the airline's rebooking duties follow the ticket conditions. A short connection is not a basis for guaranteed expedited immigration processing.
MVA Vistos can assess the passport and itinerary before travel from Brazil. It cannot guarantee visa issuance, airline boarding or CBP admission.
Families should check every passport separately. One traveller may use ESTA, another a B visa and another may need C-1. A parent's document does not cover a child, even when all tickets share one reservation.
The return to Brazil is a separate immigration question for foreign residents. A valid U.S. transit document does not guarantee that a Brazilian residence card, re-entry authorization or passport will be accepted for the final segment.
Transit applicants should explain the full route, including destination permission and any airport transfer. Hiding a planned visit to fit C-1 can create a material inconsistency.
Travel insurance and flexible tickets can reduce financial loss, but they do not alter visa requirements. The document decision should be made before buying a route that depends on U.S. admission.
Before departure, recheck the status and expiration of every document and confirm that the passenger name is consistent across passport, authorization and ticket.
Frequently asked questions
Does a Brazilian passport need a visa for a U.S. connection?
Generally yes, such as an appropriate C-1 or valid B visa. ESTA requires an eligible VWP passport.
Can I use B1/B2?
A valid B visa may be usable for transit under State Department guidance.
Does a two-hour layover waive the requirement?
No. Duration alone does not remove U.S. inspection.
Can I sightsee with C-1?
C-1 is for immediate and continuous transit. Visitor activity may require B.
Can ESTA be used for transit?
Yes, for eligible VWP travelers with approved authorization and full compliance.
Do crewmembers need something different?
Crewmembers traveling to join work generally need D as well, often C1/D.
Official sources consulted
- https://travel.state.gov/content/travel/en/us-visas/other-visa-categories/transit.html
- https://www.cbp.gov/travel/international-visitors
- https://www.cbp.gov/travel/international-visitors/visa-waiver-program
- https://travel.state.gov/content/travel/en/us-visas/other-visa-categories/crewmember-visa.html
Specialized consular assistance
MVA Vistos can compare C-1, B, ESTA and C1/D for travelers departing from Brazil. U.S. authorities retain every visa and admission decision.
Editorial note
Informational content updated on September 3, 2026. MVA Vistos is a private, independent consular-assistance company. It is not part of, and does not represent, any government, embassy or consulate. Rules, fees and procedures may change, and the competent authority makes every final decision.
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