Do I need a visa for United States?
UK, EU and Australian travellers can use ESTA (apply online at least 72 h before departure). Other nationalities need a B1/B2 visa.
How long is the flight from Lisbon?
Nonstop or with a short connection, plan on about 7h 37m from Lisbon to JFK. Add roughly an hour for the transfer to the venue.
When should I book?
Fares for event weeks are usually lowest 10–12 weeks out and rise sharply after the full lineup or schedule is announced. Set a price alert early.