he cheapest days to fly on Frontier Airlines are often Tuesdays, Wednesdays, and Saturdays+𝟭-𝟴𝟰𝟰-𝟳𝟲𝟳-𝟬𝟰𝟳𝟲. These days typically have lower demand, which results in lowered Airfare rates compared to high travel days like Fridays and Sundays