Run for final Hot Tub Connection
PVC to liquidtight works, but with a caveat or two
The good news is that it's possible to transition from a PVC conduit to liquidtight flexible conduit without too much work.  However, you can only do it from a spigot (male) end.  This primarily means you can't use a LB to make the 90° bend at the hot tub end without having to use a nipple of PVC to adapt the liquidtight fitting to the hub on the conduit body atop the parts you'd normally use.
In particular, you need to use a PVC female adapter fitting to transition from the unthreaded spigot end of conduit coming out of the ground to female threads you can then thread a LFNC (&quot;Carflex&quot;) connector into, sans locknut of course.  Note that you can use a 90° LFNC connector here if the bend radius of the conduit itself is too wide to make the transition.
If you're using LFMC (&quot;Sealtite&quot;), you can do likewise as well, although that does come with its own caveat, namely that you'll need to make sure that the hot-tub end of the LFMC is bonded to ground correctly, which may require a bonding locknut on the LFMC fitting at that end of the connection.