Generally, booking flights 2 to 4 months in advance for international travel and 1 to 3 months for domestic travel often yields good prices. However, prices fluctuate constantly. For accommodations, booking well ahead, especially for peak season, is usually best for selection, though last-minute deals can sometimes be found. Flexibility with your travel dates is the biggest factor in finding lower prices.

A combination is usually best. Use an ATM (at a secure bank location) for local currency as it often gives the best exchange rate, but be aware of foreign transaction fees from your bank. Use a credit card (preferably one with no foreign transaction fees) for larger purchases like hotels and restaurants. Carry a small amount of local currency cash for small vendors or emergencies. Always notify your bank and credit card companies of your travel dates and destinations.

First, check your airline's app or website for rebooking options. If you can't rebook yourself, get in line to speak with an agent, but also try calling the airline's customer service number simultaneously, as phone agents can often rebook faster. Know your passenger rights, which vary by region