Wondering when the cheapest time of the year to fly is, then you’ll want to check out Kayak’s 2018 Travel Hacker Guide, which breaks down the cheapest time to fly every month for both domestic and international flights.

Is this 100% accurate? Absolutely not, however you’ll get an idea of any trends that the tracker shows which could help you in your search for cheap flights.

Taking a look at February as an example, you’ll find that the cheapest day for a domestic flight is February 7, and for an international fight, you’re looking at February 3 & 21. When it comes to days to avoid, the data shows that February 17 is the most expensive for domestic, with February 5 with the highest priced day for international flights.

Kayak explains that their calculations are based on flights out of US and Canada, and only for tickets purchased with cash. I personally would be more interested to see when the cheapest time to redeem miles would be, and if there’s a correlation to this.

Additionally, when it comes to how far in advance you should book to get the cheapest deal, they claim it’s based on your destination. Generally speaking for flights within North America you can find the best deals 1 month out, where as for flights to Europe, they recommend booking 6 months prior to get the best price.

Have you ever used Kayak’s Travel Hacker guide before? Feel free to share your thoughts in the comments below.