Dependant On an analysis of KAYAK information for all flights departing from inside U.s. over the past 12 months, the cheapest working day to fly for domestic flights is Wednesday. For Intercontinental flights, Wednesday experienced the cheapest tickets on normal. Depending on an analysis of KAYAK facts for all flights https://thejillist.com/story9330655/the-2-minute-rule-for-cheapest-flights