[HenrikB]

In the same situation here.

Yes, it looks like traveling outbound from some major hubs is more expensive than from other places. A round trip SFO-XYZ two week ticket can be substantially more expensive than XYZ-SFO round trip for the same period.

Note that depending on when you travel and for how long, a SFO-XYZ-SFO ticket might be more expensive also because it is a shorter ticket (1 month or 3 month ticket) and it hits a high season period ("tourist season"), whereas the XYZ-SFO-XYZ is a long-term ticket (12 months) that avoids (most of) the high season.