I know that I can oxygen supplied to me in Spain (we hope to go there later this year) but my husband wants to know what happens when we arrive at the airport i.e.can I take my portable oxygen (which I carry over my shoulder) and also when I arrive in a Spanish airport. Sorry if I haven't explained this very well. +

i have some empty portable oxygen tanks that i don't use anymore. is there any way i could sell them, or how should i dispose of them?

I want to fly from Phoenix, Az to Portland, Or, what do I need to do to make sure that I have oxygen on the plane, and in Portland?? Is there a company that rents portable oxygen re-generators?? Is there a company in Portland that can refill my oxygen and will the airlines allow me to check my canister? This is not a bottle of oxygen that you see being pulled behind, it is a portable liquid oxygen unit that I carry under my shoulder.