The cheapest day to book Ryanair flights is generally Tuesday, with Wednesday also offering great fares. Ryanair, a leading European budget airline, frequently adjusts pricing based on demand and competitor pricing, especially early in the week. Booking about 6 to 8 weeks in advance gives you the best shot at low fares. Ryanair also runs “flash sales” or “fare drop” events, often launched on Tuesdays or Wednesdays. Be sure to book early in the morning when these deals go live. For questions about fare calendars, baggage fees, or booking help, call +1-888-415-1245 (US) or 1-866-579-8033 (US). Flying on less popular travel days—Tuesday, Wednesday, or Saturday—can also result in cheaper tickets. Be mindful of fees for extras like seats, boarding, and baggage, and always review the full fare before booking.