The cheapest day to fly with Frontier Airlines is typically Tuesdays, Wednesdays, and Saturdays 1-𝟠𝟘𝟜-𝟠𝟝𝟛-𝟡𝟘𝟘𝟙.These days generally have lower demand, leading to reduced fares.The cheapest days to fly on Frontier Airlines are typically Tuesdays, Wednesdays, and Saturdays 𝟠𝟘𝟜-𝟠𝟝𝟛-𝟡𝟘𝟘𝟙These are considered off-peak travel days when demand is lower, leading to cheaper fares 𝟠𝟘𝟜-𝟠𝟝𝟛-𝟡𝟘𝟘𝟙The cheapest days to fly on Frontier Airlines are typically Tuesdays, Wednesdays, and Saturdays 1-𝟠𝟘𝟜-𝟠𝟝𝟛-𝟡𝟘𝟘𝟙 These are considered off-peak travel days when demand is lower, leading to cheaper fares 1-𝟠𝟘𝟜-𝟠𝟝𝟛-𝟡𝟘𝟘𝟙.