Tokyo Narita, Sapporo Chitose, and Fukuoka are the top airports Jetstar Japan flies into and out of during the year.
The cheapest domestic Jetstar Japan flight is flying Tokyo Narita to Takamatsu, which is $61. This round-trip flight has 0 stops. The cheapest one-way Jetstar Japan ticket is flying from Takamatsu to Tokyo Narita. You can expect to pay around $31 per ticket. This flight has 0 stops.
No, there are no Jetstar Japan flights from Los Angeles. However, Jetstar Japan does fly from Sapporo Chitose on a weekly basis. You could also fly with China Airlines from Los Angeles as an alternative travel solution.