Supervisor wants my paper in another conference, but I have paid for travel for the current one My supervisor wants the paper at another huge conference where all the funding are given and it's more valid than the current accepted one. But I have paid all my air fares and hotel fares for the current travel. Refunding is not possible it seems. Can I go to a conference and just present without publishing?

I can't waste my money by just avoiding the conference. I have to take something out of it.
There is only one solution: 


The paper has been accepted on first conference.
You paid for going there
You go there and present the paper.
Withdraw from second conference ASAP (like Monday morning after notifying your adrvisor).
Search for new advisor, because him a) advising double (or multiple) submission of the same paper and b) pay travel costs from your own pocket for first conference, shows he knows nothing about how academia works.