For travelers with more time than money, China Eastern has a rare sub-$500 round trip fare from San Francisco to Tokyo Haneda Airport HND or Tokyo Narita NRT via Shanghai PVG. These low fares mostly require an overnight in Shanghai one-way or both ways. The good news is the frequency of flights between Shanghai and Tokyo HND or Tokyo NRT allows you to schedule nearly 24 hours in Shanghai.
Departure dates are limited with around 15 dates at $484 to $490 between January 7 and May 1. March 1-9 has six dates at these low fares.
China Eastern is a SkyTeam Alliance partner and these deep discount economy fares book in Q class. This is not a miles earning fare for Delta SkyMiles.
China Eastern has $556 round trip fares from Los Angeles LAX to Tokyo with many more available departure dates, including nearly all of March.
China Eastern San Francisco SFO – Shanghai PVG – Tokyo NRT
$483.60 Priceline Tuesday March 1 – Wednesday March 9, 2016
Overnight layovers in Shanghai both directions.
China Eastern website San Francisco SFO – Shanghai PVG – Tokyo Haneda HND
$488.80 March 1 – March 9
Overnight PVG layovers in both directions.