Originally Posted by
jsloan
You should be able to modify it, but you will not be able to redeposit the miles if you choose to cancel it. That is, there's no way to turn a roundtrip award into a one-way award after travel has commenced.
Thanks that makes sense. Any experience of how this would work with the excursionist perk? if i booked A-B, B-C (excursionist), C-A, and then I fly the first two segments and change my last segment to C-D, violating the excursionist requirement. (I'm not planning on doing so, but just wondering if this is a loophole in United's system or not)