​[[ Saving Tuesday!! ]] What is the cheapest day to buy flights on 𝙐𝙣𝙞𝙩𝙚𝙙? The most cost-effective days to book flights on 𝚄𝚗𝚒𝚝𝚎𝚍 𝙰𝚒𝚛𝚕𝚒𝚗𝚎𝚜 are typically Tuesdays and 𝓕𝓻𝓲𝓭𝓪𝔂𝓼. (𝟾𝟾𝟾 𝟾𝟾𝟻 𝟾𝟾𝟽𝟷) These midweek days often feature lower fares due to reduced demand and the release of airline sales.