Yellowstone National Park Entry Requirements

Children of all ages must have their own passport (cannot be included on parent's passport). Minors (under 18) traveling without both parents should carry notarized letter of consent from non-accompanying parent(s) authorizing travel, including contact information and copy of parent's ID. CBP officers are trained to prevent child abduction and may ask detailed questions. For divorced/separated parents, carry custody documentation. Adopted children should have adoption papers. Children are subject to same visa/ESTA requirements as adults. In Yellowstone, supervise children closely near thermal features and wildlife - park dangers are real and potentially fatal.

Dogs and cats must have valid rabies vaccination certificate (administered at least 30 days before entry for primary vaccination). Health certificate issued by licensed veterinarian within 30 days of travel recommended. CDC temporarily suspended dog import requirements from high-risk rabies countries in 2024, but verify current rules. Pets must be healthy and free of diseases communicable to humans. In Yellowstone National Park, pets are allowed only in developed areas: parking lots, roadsides, and within 100 feet of roads and designated campgrounds. Pets prohibited on trails, boardwalks, and backcountry. Must be leashed (6 feet maximum). Service animals have broader access but must be under control. Consider boarding pets outside park due to severe restrictions and wildlife dangers.

Tourist visas (B-2) and Visa Waiver Program (ESTA) do not permit stays beyond authorized period (typically 90 days for VWP, up to 6 months for B-2). B-2 visa holders may apply for extension using Form I-539 before current authorization expires; must demonstrate continued tourist purpose and financial support. VWP stays cannot be extended except in extraordinary circumstances. Overstaying can result in visa cancellation, removal, and bars to future U.S. entry (3-year bar for 180+ days overstay, 10-year bar for 1+ year). For longer stays, consider applying for different visa type (student F-1, work H-1B, etc.) before entering U.S. Working on tourist visa is strictly prohibited. If planning extended Yellowstone visit, ensure legal status throughout entire stay.

Business activities allowed on B-1 visa or VWP include meetings, conferences, consultations, and negotiations. Cannot engage in productive employment or receive U.S. source salary. Carry invitation letter from U.S. business, conference registration, or meeting agenda. If visiting Yellowstone for corporate retreat or business event, ensure activities remain within tourist/business visitor scope. Working remotely for foreign employer while visiting U.S. is gray area - consult immigration attorney if planning extended remote work.

Academic study or research requires F-1 (students) or J-1 (exchange visitors) visa, not tourist visa. If visiting Yellowstone for educational field trip or research, must have appropriate visa category and authorization from designated school official. Yellowstone offers research permits for approved scientific studies - apply through NPS research permit system. Tourist visa holders cannot enroll in degree programs or conduct formal research.

Criminal history can affect U.S. admissibility. Crimes involving moral turpitude, drug violations, and multiple criminal convictions may render traveler inadmissible. ESTA may be denied; visa applicants must disclose criminal history and may need waiver. Even minor offenses should be disclosed - CBP has access to international databases. Arrest without conviction should also be disclosed. DUI convictions are particularly scrutinized. If concerned about admissibility, consult immigration attorney before applying or traveling. False statements about criminal history will result in permanent inadmissibility.

Journalists and media professionals traveling to report, film, or produce content generally need I visa (foreign media) rather than tourist visa, even if trip is brief. Documentary filming in Yellowstone requires special use permit from NPS. Tourist visa holders cannot engage in professional journalism. If planning any media work, disclose purpose to consular officer during visa application. Amateur photography and personal social media content generally acceptable on tourist visa.

U.S. and Yellowstone National Park comply with Americans with Disabilities Act (ADA). Accessibility services available at airports and throughout park. Yellowstone offers accessible facilities, trails, and viewpoints - obtain accessibility guide at entrance or online. Service animals permitted throughout park (broader access than pets). Wheelchair and mobility device rentals available at park facilities. Notify airlines of accessibility needs 48 hours in advance. Medical equipment and medications allowed through customs with proper documentation. Accessible campsites and lodging available with advance reservation.