Travel experts from CheapAir and Going categorize booking timelines based on season and destination:

4 to 5 months ahead is recommended, especially for summer travel.

Friday and Sunday typically command the highest fares due to weekend traveler demand.

Tuesday and Wednesday are consistently the least expensive days for international travel.

Early morning flights often have lower fares and higher on-time arrival rates. Regional Variations

Tools like Google Flights or Going can notify you of price drops so you don't have to check manually every day.

Book 4 to 10 months ahead. For high-demand periods like Christmas or the Olympics, prices rise earlier and more sharply.