I was trying to think about how much it would cost to fly from Nepal to Portland back then.
My NWA flight schedule from 1971 at Dropzone.com (jpeg)....says it cost about $200 to fly coast to coast in the US. It doesn't have fares for the international flights.
But just guessing I would think it would have cost around $500 to go from Nepal to Portland? Probably at least one connecting flight. Maybe from Kathmandu to Japan, then Japan to USA. Dunno. It's an interesting question about just how long that might have taken.
Like, could Sheridan have flown from Nepal, with no luggage, and immediately hijacked. Or would he have stayed somewhere for a day or two, buying flares etc for a bomb. I would think he would have had to stay for a few days beforehand.
And then he would have to get back to an airport..probably PDX, and fly back?
Would he have had to buy some new clothes if the clothes he jumped with, got shredded?
It's hard to figure out the scenario.