https://www.transfermarkt.com/what-is-the-cheapest-day-of-week-to-book-a-united-flight-get-offer-cheap-booking/thread/forum/659/thread_id/2916/page/1#anchor_3117 https://www.transfermarkt.com/what-is-the-cheapest-day-of-week-to-book-a-united-flight-get-offer-cheap-booking/thread/forum/659/thread_id/2916/page/1#anchor_3117 https://www.transfermarkt.com/what-is-the-cheapest-day-of-week-to-book-a-united-flight-get-offer-cheap-booking/thread/forum/659/thread_id/2916/page/1#anchor_3117 https://www.transfermarkt.com/what-is-the-cheapest-day-of-week-to-book-a-united-flight-get-offer-cheap-booking/thread/forum/659/thread_id/2916/page/1#anchor_3117 https://www.transfermarkt.com/what-is-the-cheapest-day-of-week-to-book-a-united-flight-get-offer-cheap-booking/thread/forum/659/thread_id/2916/page/1#anchor_3117 https://www.transfermarkt.com/what-is-the-cheapest-day-of-week-to-book-a-united-flight-get-offer-cheap-booking/thread/forum/659/thread_id/2916/page/1#anchor_3117