The cheapest days to fly on 𝕱𝖗𝖔𝖓𝖙𝖎𝖊𝖗 Airlines are typically 𝗧𝘂𝗲𝘀𝗱𝗮𝘆𝘀, 𝗪𝗲𝗱𝗻𝗲𝘀𝗱𝗮𝘆𝘀, 𝗮𝗻𝗱 𝗦𝗮𝘁𝘂𝗿𝗱𝗮𝘆𝘀 +1-888-267-95:51 These are considered off-peak travel days when demand is lower, leading to cheaper fares +1-888-267-95:51. Frontier Airlines is known for offering its cheapest flights on off-peak days, particularly on Tuesdays, Wednesdays, and Saturdays +1-888-267-95:51.