With four distinct seasons, traveling in Budapest can be a very different experience from one month to the next. Come in December to visit one of Europe’s finest Christmas markets, if you don’t mind the cold. Opt for the summer to enjoy many open-air festivals and events. Most visitors, however, prefer the mild weather of fall and spring. Visas are not required for visits up to 90 days for U.S., Canadian, Australian, and EU citizens. All flights land at Budapest’s Ferenc Liszt International Airport (BUD). The public transportation system is extensive and convenient. The language is Hungarian; the currency is the Hungarian forint. It’s standard to tip 10% in restaurants and for services. Electricity is 220 volts.