Originally Posted by
Turbosina
Very helpful, thank you!! One more question: when departing the UK, how does one obtain a boarding pass and get through security without an assigned seat? (Assuming I'm not on VS). I've never nonrevved internationally on a pax carrier so I'm not aware of the process. And how does one pay departure taxes?
Thanks in advance

I've been Jumpseating to and from the UK for years. Took UAL from GLA to EWR just last week. Simply walk up to ticket counter and ask to jumpseat. They check you are CASS approved and ask for your credit card for the taxes. There is no JS form! I paid exactly $113.82 last week. (I have paid $200 out of LHR!).
Your stby ticket gets you through security until you get a seat assignment at the gate. No need to list on UAL. I'm not sure if you are at a regional or not. But, back in my regional days, we didn't have reciprocal JS agreements for "international" travel. Check your agreements!
Trent