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https://central.xero.com/s/question/0D58V00009SmwRqSAJ/cheap%F0%9D%94%BB%F0%9D%95%96%F0%9D%95%9D%F0%9D%95%A5%F0%9D%95%92flightswhat-is-the-cheapest-day-to-buy-%F0%9D%94%BB%F0%9D%95%96%F0%9D%95%9D%F0%9D%95%A5%F0%9D%95%92-flights
https://central.xero.com/s/question/0D58V00009SmwRqSAJ/cheap%F0%9D%94%BB%F0%9D%95%96%F0%9D%95%9D%F0%9D%95%A5%F0%9D%95%92flightswhat-is-the-cheapest-day-to-buy-%F0%9D%94%BB%F0%9D%95%96%F0%9D%95%9D%F0%9D%95%A5%F0%9D%95%92-flights