Standard windows shift during high-demand periods. For these, booking as soon as you see a "fair" price is recommended over waiting for a dip.

Airlines initially set high baseline prices and adjust them as they gauge demand. Targeting these specific windows helps you catch the lowest fare buckets before they sell out.

This has a much larger impact on price. Tuesdays and Wednesdays are consistently the cheapest days to fly, saving you up to 20% compared to weekends.

1–3 months (roughly 3–8 weeks) before departure. For 2026, the average cheapest day to book a domestic flight is 43 days before takeoff.