Let me enter some specualtion due to the bovious misdirection going elsewhere to protect the Finish City tasks and Finish Line. My hypothesis is this:
Final 3 left Prague yesterday nonstop on Delta 63 (codeshre OK5088 corrected per :jerry:) PRG ATL scheduled 1000 1535. Actual times were both ahead of schedule 0959 1525.
This flight continued on to LAX and teams could have gone there to connect to Las Vegas It was scheduled 1746 1925 but was late on both at 1758 1934. If that did occur, then potential flights LAX to LAS were:
NW633 2010 2121
UA864 2255 0004
or anything early this morning
It is more likely that teams got off DL63 in Atlanta and transferred onto another flight (see my post in Spoilers etc. for the details), but a logical one is last night's DL1093 ATL LAS actual departure late at 1924 and actual arrival late at 2045. that would get them to LAS 36 minutes before the route through LAX.
Ok, so that puts the final 3 into Las Vegas last night. What have they been doing if, as stated by Peach, it's not quite over yet?