Came across this Air Canada deal for LAX to Bangkok at $430 round trip. Then I saw it for SFO too. San Diego has $430 tickets too.
SecretFlying shows New York and D.C. tickets in $400s too, but these deals look like they are mostly gone now with ticket prices changing from $400s to $1,000+ on major OTA sites like Orbitz.
Travel departures Sep-Nov 2017.
Air Canada flights to Hong Kong, then another carrier like ANA or even Cathay Pacific to Bangkok.
All examples below are Air Canada website tickets available between 7am-8am Pacific time.
Air Canada ticket $430.44 round trip Mon Nov 6 – Thu Nov 16
LAX – Vancouver YVR – Hong Kong HKG Air Canada
Hong Kong HKG – Bangkok BKK – Hong Kong HKG Cathay Pacific
Hong Kong HKG – Vancouver YVR – LAX Air Canada
Air Canada ticket $492.16 round trip Mon Sep 4 – Thu Sep 14
SFO – Vancouver YVR – Hong Kong HKG Air Canada
Hong Kong HKG – Bangkok BKK All Nippon Airways
Bangkok BKK – Hong Kong HKG Thai Airways
Hong Kong HKG – Vancouver YVR – SFO Air Canada
Update 7:45am Pacific: Check of Google Flights shows tickets in $570s now from New York and D.C.
Update 7:50am Pacific: Found $466 LGA-BKK ticket prices on Orbitz, then changes to $1,000+. Looks like deal is going fast or gone from East Coast.
Update 7:55am Pacific: $430 tickets to Bangkok from San Diego too.
Air Canada/Cathay Pacific
SAN – Vancouver YVR – HKG – Bangkok BKK – HKG – Vancouver – SAN