Tuesday is often considered the best day to buy a discounted air ticket. Ticket managers go to work on Monday and study weekend sales. If not enough seats are sold, sales are organized and new prices are entered into the system on Monday night. Two-thirds of all sales still go to the online ticketing
https://lowcost.club/ systems on Monday night and usually last only a couple of days. Such sales, however, often offer tickets with restrictions and not for all destinations. Airline ticketing systems determine the price for each flight and compare it with competitors' prices.