What time of the day can I get discount on Air Ticket Booking Last Minute Fights? By the way, by the time of day - it is more profitable to buy Delta last minute flight tickets on the night from Tuesday to Wednesday. During these days of the week the price was the lowest! In addition, when planning your trip, you have time to track the change in the ticket price and wait for the most profitable air ticket booking. #airticketbooking #lastminuteflights #lastminutedeals #discountonairticketbooking #ustraveltickets #flightbooking