How long is a flight from Seattle to China?

I searched using "flytaiwan.com" and this is the result:

On United, going from Seattle to Taipei required a stopover in Tokyo first, then to Taipei. This was 16 hours.

On china Air, there was a direct flight from Seattle to Taipei which was 13hr 45min going and 10hr 40 min returning.

Other airlines included:

Eva Air

Korean Air

Asiana Air

Delta

Singapore

Cathay Pacific

Maylasia

and others

The most afforadable seem to be United and China Air.

Hope this helps!