I have last minute travel plan.

Trip starts on March 2nd.

ORD- LONDON stay for 2 or 3 days.
London to KTM, Nepal for 13 days.

Return is:

KTM to ORD

ORD- to Buffalo, NY 2 days later.



I have US airways miles, United, AA & BA

I have United silver status and will pay $50 booking fee for this.

Can I do all those trip without spending extra miles? stopever & open jaw?

For example, One way on United to KTM is 42500 miles.

What is the best way to book this? Which miles to use?
Thanks a lot!^