I'm planning a RTW trip. I priced out RTW tickets from the major alliances, and they are *significantly* more expensive than buying one-way tickets, so I'm planning to string together a bunch of one way flights to get me around the world.

I did hit one snag though. On my final leg, NRT->JFK, all of the one-way direct flights are only available in Y. American, for example, wants upwards of $5000 for a one way coach ticket, whereas I can buy a roundtrip ticket for $1200, since it's not refundable. Seems completely idiotic to me, since I could buy 4 roundtrip tickets for the price of a one way ticket.

I was wondering:
- Why are NRT-JFK open-jaw tickets only sold in Y?
- Is there any way around this restriction?
- Will anything happen if I buy a roundtrip ticket, and don't take the return leg?