What is the best day to buy Air France tickets? (Save Upto 30-40%) Generally, Tuesdays and Wednesdays are often considered the best days to buy Air France tickets. (+1-866-327-8015 {US}, +52-800-953-7478 {Mexico}, +44-808-175-7396 {UK} ) Airlines, including Air France, frequently release fare updates early in the week, making these days ideal for potentially finding lower prices due to increased competition for these new deals.