https://www.devex.com/people/what-is-united-s-cancellation-policy-2006811

https://www.devex.com/people/what-is-the-best-day-to-book-a-flight-with-american-airlines-2006739

https://www.devex.com/people/what-day-is-the-cheapest-to-buy-american-airlines-tickets-2006696

https://www.devex.com/people/what-is-the-cancellation-policy-for-united-airlines-2006621

https://apidocs.eightfold.ai/discuss/6703fd1b41898a003787c708

https://apidocs.eightfold.ai/discuss/6703f92b072ce400621ede38

https://www.devex.com/people/what-is-the-cheapest-day-to-buy-tickets-on-expedia-2006473

https://developers.rossum.ai/discuss/67031abf1f4d1b0031719079

https://shorturl.at/tOSkg

https://us.**********sony.com/s/question/0D5Dp00002AR8EbKAL/-18887380817-what-day-are-united-flights-the-cheapest-usa-?language=en_US