There is no one-size-fits-all answer to this question as the best time to book an international flight can vary depending on several factors such as destination, season, and the airline. However, here are some general guidelines that can help:

• Book flights early: It’s always a good idea to book your flights as early as possible, especially during peak travel seasons when demand is high and prices are likely to be higher.
• Check for sales and special deals: Airlines often have sales and special deals on flights, so it’s worth checking regularly to see if you can get a good deal.
• Be flexible with your travel dates: If you have some flexibility with your travel dates, you may be able to find lower airfare rates by traveling during off-peak times or weekdays instead of weekends.
• Use flight search engines: Use flight search engines such as Google Flights, Kayak, or Expedia to compare prices and find the best deals.

In general, it’s best to book your international flight at least 2-3 months in advance for the best chance of finding a good deal.