Originally Posted by
B747-437B
Does any US carrier provide STPC on domestic itineraries?
Not that I am aware of. The domestic market is too competitive to really allow most carriers to make a margin while paying for you to spend a night in a hotel on the carrier. Usually in Intl markets on higher cost, premium cabin fares, where a carrier's routing may require the stopover in order to compete on price with a carrier who either has direct or same day connections, these are offered.