It's difficult for CX because all the uni students from the US and Canada are going home. SFO, JFK and LAX have the most combined CX/JL flights.
YVR-BKK has 3 Y on JL during your dates, HU has 3 J (but the fuel surcharges are $300+ USD each). SJC and SEA also have 3 J on HU and the fuel surcharges are $235 pp.