&gt; <i>it is a ~2x-3x or more premium</i><p>This is only my experience on long flights. In 2007 I had a $600 coach seat from NYC to Ireland (may have been a connection I do not recall). The first-class seats were in the upper $4k range.<p>My wife and I fly from the northern east coast of the US to the southern east coast once a year, the tickets are roughly $650 total for coach (including $50&#x2F;person for the &quot;Comfort +&quot; seats). First class has never risen past ~$950.