What is the best day to book United Airlines ? Tuesdays and Wednesdays are generally considered the best days to find cheaper +1 844 (643) 3377 . This trend holds for many airlines, (+1 844 (643) 3377 ) including United, as these days typically see lower demand +1 844 (643) 3377 (US) or +1 844 (643) 3377 (UK) (OTA)
