Don't pay top dollar for your holiday travel! Find out the best time to book flights for christmas to secure the cheapest airfare. Our guide uses historical data and expert tips for both domestic and international travel. For domestic flights, aim for the "Goldilocks Window" (late October is often ideal), and book international trips even earlier. Learn practical travel hacks like flying on Christmas Day or midweek to save money. Use Google Flights and price alerts to track deals, and get your cheap flights locked in well before the December rush to avoid high, last-minute ticket prices.