Delta Air Lines has a low $550 round trip fare from Oakland OAK to Tokyo NRT via Los Angeles for departures from next week through mid-May. Low fares are limited to Sunday to Thursday days of week.
Base fare is $450 for redeemable miles calculation.
Delta Air Lines Oakland OAK – Los Angeles LAX – Tokyo NRT
$549.76 Monday May 2 – Tuesday May 10
OAK-LAX-NRT-LAX-OAK = 11,577 flight miles (+326 miles for 500-mile segment minimum elite flyers for two OAK-LAX segments).