Primer Viaje a EE. UU.: 15 Pasos Esenciales Antes de Volar (ESTA, Parques y Propinas)

90–60 Days Out: ESTA ($21) or Visa, Passport Validity & National Park Lodges

Apply for your Electronic System for Travel Authorization (ESTA) only on the official U.S. Customs and Border Protection portal (esta.cbp.dhs.gov, $21 fee, valid 2 years for 42 Visa Waiver Program countries) at least 72 hours—and ideally 60 days—before departure. If staying inside Grand Canyon, Yosemite, Yellowstone, or Zion, book official in-park lodges 6 to 12 months ahead.

60–30 Days Out: Recreation.gov Timed Entry Permits & Amtrak Early-Bird Fares

Several flagship national parks (Arches, Rocky Mountain, Glacier going-to-the-sun road, Haleakalā sunrise, Muir Woods shuttle) require $1–$2 timed-entry vehicle reservations on Recreation.gov. For Northeast Corridor trips between Boston, NYC, Philadelphia, and Washington, D.C., book Amtrak Acela or Northeast Regional Saver/Value fares 4–8 weeks ahead.

14–7 Days Out: Travel Medical Insurance, Type A/B Adapter & eSIM Setup

Because the United States has no reciprocal public healthcare agreements for foreign visitors, purchase comprehensive travel medical insurance ($1,000,000+ coverage recommended). Pack a Type A/B two-flat-prong plug adapter (120V / 60Hz), activate a US eSIM (T-Mobile, Verizon, or AT&T network), and bookmark our State Sales Tax & Tipping Calculator ($).

Key Takeaways & US Travel Tips

• Verify current entry rules on official U.S. government portals (esta.cbp.dhs.gov, nps.gov, recreation.gov).
• Use our interactive US Sales Tax & Tipping Calculator ($), National Parks Pass Calculator ($80), and Amtrak Rail Calculator.
• Save offline maps and our printable American English & Dietary Allergy Show-Cards before departure.