Why don't international flights from North America (Califronia) to Asia fly over the Pacific Ocean?

Why don't international flights from North America, specifically the West Coast, to Asia fly over the Pacific Ocean. The length of time to fly over the Pacific Ocean is the same as flying over the Atlantic Ocean.

I am sure they take the shortest permissible route to save fuel...the dividing line is like in India someplace...

When I went to Taiwan, I flew directly from San Fransicso to Taipei. Maybe it's only certain airlines that do that.

what are you talking about? all american flights to asia ALWAYS cross the pacific. unless to western asia maybe.

International flights from USA to Asia fly over the pacific; airlines schedule planes to fly to shortest route as possible. If you look at a map stretched over a table, the shortest route seems to be a direct line from USA to Asia; if you get a globe you'll see that it is shorter to fly north toward Alaska, then south to Asia.