Fly from San Francisco to Manila, Philippines for $525 roundtrip on Skytrax five-star rated airline Asiana.
Flights at this price are available daily starting in late October with departures through the middle of May, return flights in June permitted.
Depending on your travel days most itineraries can be found with a short layover in Seoul (ICN), however, on select travel dates, there may be a long layover required.
As an example, I found seats departing SFO on Tuesday, February 26 and returning from MNL on Thursday, March 7, 2019. Other dates are widely available at this price point.
If you need a place to stay in Manila, we've got you covered with these great accommodation deals from Hotewatchdog.