Skyteam Alliance member China Eastern and Star Alliance airline Air China have Los Angeles Singapore round trip on sale for $733 for departures in May or late August through November. There is wide open availability beginning in September for most dates at this low fare.
China Eastern $733.40 Los Angeles – Singapore round trip
May 5 – May 19, 2015
This fare did not price out at $734 on China Eastern website.
Star Alliance member Air China $720 Los Angeles – Singapore
Air China offers this route in May for $755 and it is bookable on China Airlines website.
From late August through November the airfare drops to as low as $720 round trip all-in from Air China.
$721 is a good fare from LAX to Singapore round trip. This is one of the lowest fares I have seen to Singapore in the past month. Not quite as low as a ticket from LAX to Kuala Lumpur or Jakarta available for a short time this week at $389.
Loyalty Traveler – [Fare Gone] Fare Alert $380 round trip LAX-CGK Jakarta, Indonesia Delta Sep-Dec 2015 (April 15)
Loyalty Traveler – Fare Alert Delta $389 San Jose SJC KUL Kuala Lumpur [fare gone] (April 16)