A few weeks ago it was possible to fly the similar route beginning from PRG ( FCO - NRT ) then MNL - LAX then LAX - CDG ( - ROM - CAI ). Once AlItalia fixed it, it was still possible from BUD. No more
but...
Now you can start in LAX (and finish in LAX as well)
Just an example (use ita matrix multi-city search):
11 Nov 2014
LAX - BUD (*)
(in detail: LAX - JFK - FCO - BUD, short layovers in JFK/FCO, operated AlItala)
17 Nov 2014
BUD - NRT
(in detail: BUD - AMS - NRT, less than 6 hours in AMS, operated KLM)
$361 (!!!) many dates possible, this is just an example
then we need to go back (or to go further...) with the help of Philippine Airlines (another multi-city matrix search), for example:
20 Nov 2014
NRT - MNL
27 Nov 2014
MNL - LAX
$586, not bad ;-)
All together for only $947
With some effort and extra cost it is possible to visit Hawaii.
(*) you may try also with PRG and the price of this segment is then $422
(**) keep in mind that from BUD you can easily reach many European destinations with Wizzair or Ryanair, usually $100-150/rt
(***) if you wonder where to book LAX-BUD-NRT just go to
www.alitalia.com, first you will see $498 but after selection of the second part (KLM) the total price drops down to about $361....