Seems pretty obvious to me.
Choose ALC from the list of destinations and it shows a departure time of 19:50 ex-HUY, arriving back into HUY at 02:25.
Choose HUY from the list of destinations and the timing for the ALC service show an arrival FROM HUY at 23:30 and a departure TO HUY at 00:30. i.e. a 1 hour turnaround in ALC.
So,
19:50 dep HUY
23:30 arr ALC
00:30 dep ALC
02:25 arr HUY.
i.e a based HUY a/c.
The times Buster has posted are therefore the turnaround times at the overseas airports, not HUY.
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