Midweek travel (especially Tuesdays and Wednesdays) is less busy and likely cheaper than flying on weekends.The most affordable days to fly on ᴜɴɪᴛᴇᴅ ᴀɪʀʟɪɴᴇs are typically Tuesdays and Wednesdays. On these days, demand is generally lower, which often results in reduced fares. For more information, you can call 1-866-738-0640.