https://community.bluebeam.com/bluebeam-community/discussion/2990/what-is-the-cheapest-day-to-book-flight-on-united/p1?new=1

https://community.bluebeam.com/bluebeam-community/discussion/2985/%F0%9D%9F%8F-%F0%9D%9F%96%F0%9D%9F%96%F0%9D%9F%96-%F0%9D%9F%94%F0%9D%9F%93...

https://community.bluebeam.com/bluebeam-community/discussion/2287/%EF%BB%BF%F0%9D%9F%8F-%F0%9D%9F%96%F0%9D%9F%96%F0%9D%9F%96-%F0%9D%9F%94%F0...

https://community.bluebeam.com/bluebeam-community/discussion/1920/american-travel-guide-1-855-738-4035-what-day-is-cheapest-to-book-american...

https://community.bluebeam.com/bluebeam-community/discussion/1663/delta-airlines-what-is-the-%F0%9D%9F%8F-%F0%9D%9F%96%F0%9D%9F%95%F0%9D%9F%...

https://community.bluebeam.com/bluebeam-community/discussion/1405/travel-guide-delta-what-is-the-%F0%9D%9F%8F-%F0%9D%9F%96%F0%9D%9F%95%F0%9D...

https://community.bluebeam.com/bluebeam-community/discussion/1148/%F0%9D%9F%8F-%F0%9D%9F%96%F0%9D%9F%95%F0%9D%9F%95-%F0%9D%9F%95%F0%9D%9F%91...

https://www.devex.com/people/what-is-the-cheapest-day-to-book-flights-on-american-airlines-2001333

https://www.devex.com/people/what-is-the-cheapest-day-to-book-flights-on-expedia-2001312

https://www.devex.com/people/american-cancellation-policy-2001292