The best day to book flight tickets is generally Tuesday or Wednesday. Airlines often release new fare discounts and promotions early in the week, and by mid-week, many competitors have adjusted their prices to match or offer better deals. As a result, flights tend to be cheaper on these days compared to weekends or Mondays, when demand and prices are typically higher.
However, booking time also matters. Aim to book 6-8 weeks in advance for domestic flights and 2-6 months ahead for international flights, as prices tend to rise closer to the departure date. Also, being flexible with your dates and flying mid-week (Tuesday, Wednesday, or Thursday) instead of weekends can help you secure better deals.