ANA (NH) and United (UA) have Los Angeles to Singapore as low as $621 or $655 from San Francisco. Singapore Airlines (SQ) is $649 from either LAX or SFO with nonstop flights available. Fares in the $600s are available for fewer than 50% of dates from September to early December with most dates in low to high $700s. Singapore Airlines is lowest fare from SFO and ANA/United are lowest fares from LAX with Star Alliance without transiting through China ($606 Air China and SkyTeam China Southern $593).
ANA Los Angeles LAX – Tokyo NRT – Singapore SIN
$623.92 round trip Wed Oct 12 – Thu Oct 20
Singapore Airlines San Francisco SFO – Singapore SIN nonstop flights
Loyalty Traveler – Hotel Promotions Guide
Hotel loyalty program points and miles promotions for Best Western Rewards, Club Carlson, Choice Privileges, Hilton HHonors, Hyatt Gold Passport, IHG Rewards Club, Marriott Rewards, Ritz Carlton Rewards, Starwood Preferred Guest and Wyndham Rewards.