United States
https://www.devex.com/people/does-singapore-air-have-a-24-hour-cancellation-policy-2001232
https://support.empowersuite.com/hc/en-us/community/posts/16233318127388--1-855-738-4781-Singapore-Airlines-Check-in-%F0%9D%90%AC%F0%9D%90%A2M%F0%9D%90%A9%F0%9D%90%A5%F0%9D%90%9E-%F0%9D%90%A9%F0%9D%90%AB%F0%9D%90%A8%F0%9D%90%9CE%F0%9D%90%AC%F0%9D%90%AC-24-7
https://support.empowersuite.com/hc/en-us/community/posts/16233329538844--1-855-738-4781-Singapore-Airlines-Check-in-official-Expert-%F0%9D%90%9C%F0%9D%90%A1%F0%9D%90%9E%F0%9D%90%9C%F0%9D%90%A4-%F0%9D%90%A2%F0%9D%90%A7-%F0%9D%9F%90%F0%9D%9F%92hr
https://support.empowersuite.com/hc/en-us/community/posts/16233330704924--1-855-738-4781-Singapore-Airlines-Check-in-liveperson-Official-Quick-Solution
https://support.us.edu/hc/en-us/community/posts/26848048078231--1-855-738-4781-Singapore-Airlines-Check-in-TravelEase-guid-Experts
https://support.empowersuite.com/hc/en-us/community/posts/16233103309340--1-855-838-4982-Singapore-Airlines-refund-%F0%9D%94%B8sk-%F0%9D%95%86ffiCial-%F0%9D%94%BCXpert
https://support.us.edu/hc/en-us/community/posts/26847829988631--1-855-838-4982-follow-Pollicy-Singapore-Airlines-refund-AnYtiMeSolution
https://support.empowersuite.com/hc/en-us/community/posts/16232917390364--1-855-738-4781-Singapore-Airlines-Check-in-24-7-CuStomEr-suPpoRt