Philippines Airlines have roundtrip airfares travelling from Los Angeles or San Francisco to Manila for $498, nonstop. Or travel from New York City, with 1 stop in Vancouver Canada, also for $498.
SFO or LAX-MNL $498 RT Nonstop
Departs Sun-Thurs from Sept 3 thru Nov 23
Returns wide availability
JFK – MNL $498 RT – 1 stop in Vancouver Canada
Departs JFK: Sept 19, 26; Oct 3, 17, 24, 31; Nov 7, 14, 21
Returns JFK: wide availability Mon, Tues, Thurs, Sat
Use those dates and book it on Expedia . You may also use other travel sites like Orbitz, Priceline, CheapOAir but Expedia is $2 cheaper.
Samples attached for all three departure cities.