5–7 months ahead due to lower frequency and higher demand. Mexico/Caribbean: 1–2 months ahead. Best Days to Book vs. Best Days to Fly
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. when should i buy flights
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. 5–7 months ahead due to lower frequency and higher demand