Philippine Airlines has several cities in southeast Asia on sale from Los Angeles LAX and San Francisco SFO, including Bali Denpasar DPS at $549 and Singapore SIN at $559 round trip for departures August to November 2017.
Routings are via Manila and it is possible to book a 22 hour overnight layover on a routing to Singapore if desirable. Or no overnight or day long transit possible depending on route.
Other cities on sale in mid-$500s round trip include Bangkok BKK, Ho Chi Minh City SGN, Kuala Lumpur KUL, Hong Kong HKG and Jakarta CGK.
Philippine Airlines San Francisco SFO – Manila MNL – Singapore SIN – Manila MNL – San Francisco SFO
Philippine Airlines San Francisco SFO – Manila MNL – Denpasar Bali DPS – Manila MNL – San Francisco SFO