Travel costs fluctuate significantly based on seasonal demand: When Is the Best Time to Buy Plane Tickets? - CLEAR
To secure the best rates, aim for these "Goldilocks" windows where prices are typically at their lowest: the cheapest time to buy plane tickets
For peak times like Thanksgiving and Christmas, start monitoring in August and aim to book by Halloween at the latest. Cheapest Days to Book vs. Fly the cheapest time to buy plane tickets