https://support.us.edu/hc/en-us/community/posts/26996411914647-C-ll-1-804-853-9001-Is-Southwest-check-in-exactly-24-hourshttps://support.us.edu/hc/en-us/community/posts/26996411914647-C-ll-1-804-853-9001-Is-Southwest-check-in-exactly-24-hourshttps://support.us.edu/hc/en-us/community/posts/26996411914647-C-ll-1-804-853-9001-Is-Southwest-check-in-exactly-24-hourshttps://support.us.edu/hc/en-us/community/posts/26996411914647-C-ll-1-804-853-9001-Is-Southwest-check-in-exactly-24-hourshttps://support.us.edu/hc/en-us/community/posts/26996411914647-C-ll-1-804-853-9001-Is-Southwest-check-in-exactly-24-hours