Star Alliance (LOT, Lufthansa, Swiss or United) or Oneword carriers (British Airways, Iberia) offer competitive solution from Hungary to California. Return flights from Budapest to Los Angeles are available from €366 incl. all taxes and fees and checked bag. In fact you would also find competitive solution with SkyTeam however remember that they do not offer checked bag in base fare...Althought it might does not seem so compettitive solution from Europe to Los Angeles trust that it is great deal for travelers in Hungary considering standard price to Los Angeles..
Limited availability in second half of May then September 2018 to March 2019. Blackout period around Christmas Holidays. Need accommodation in Los Angeles you can use booking servers such as Booking.com or Hotels.com. You can compare all the cheapest option directly at website of British Airways, LOT or Lufthansa.
Booking sample
Budapest - Los Angeles from €366 (Star Alliance)
Budapest - Los Angeles from €373 (Oneworld)
Amsterdam / Paris / Italy - USA from €287
Brussels, Vienna, Zurich or Frankfurt to North America from €306
Booking sample of cheap return flights from Budapest to California from €366 including checked bag here...Your outbound flight from Hungary to Los Angeles would be on 12th of November and inbound on 26th of November 2018.
