Originally Posted by Herb687

52. (1988) Five different U.S. airlines have owned and operated Boeing’s 747SP. Three of those airlines have operated it on domestic flights within the continental U.S. Per the OAG I used to reference this question, only one airline now operates a single 747SP flight on a coast to coast routing. Identify the route and the airline please.

How about JFK-SEA? That was a longstanding UA route and both wereinternational gateways for UA at the time.

There weren't a lot of other options left, were there? Well you are correct, Sir! Here's the eastbound schedule:

United UA 22 Seattle (SEA) 1250p-850p L New York (JFK) 747SP Daily

I used to fly SEA-IAD or JFK a lot back in the day. Unfortunately the aircraft were mostly DC-10s and 757s back then. I did once log a UA 747SP on a SFO-IAD leg which we covered in just over 4 hours, Being as the SP was used primarily for international flights, all of the catering was done using the international plates and cutlery., even on domestic flights. My only other flight on a United SP was LAX-NAN-SYD back in January of 1987. I've never slept better on an airplane than I did on those old First Class cradle seats and if the captain hadn't wakened us to say we'd be putting down in Fiji for additional fuel, I might have slept a good 8-9 hours undisturbed. Oh wait! There was a Tokyo to Los Angeles flight in 1987 as well. Love the SP!