United Airlines and Star Alliance partners like Swiss and Lufthansa have San Francisco to Mumbai, India BOM on sale for as low as $809 round trip in October and November. Fares go up for December travel, then low fares return for January to March travel.
Outbound: San Francisco SFO – Washington Dulles IAD – Mumbai, India BOM
Inbound: Mumbai, India BOM – Newark EWR – San Francisco SFO
$814.09 Wednesday November 4 – Wednesday November 18
You can also set your flight schedule flying all Swiss Airlines SFO-ZRH-BOM for about $15 more round trip. These flights are booked in K class.
New Delhi DEL is also available for flights with United and Star Alliance partners for around $850 round trip.