Since you said you don't want to sell under 50.000 euros, the 203 euros for plane tickets represent 0.4% of the 50.000 euros transaction. I guess it's a good deal compared with the 24% you mentioned in OP, isn't it? 
I think that his point was that he's not selling at under 50k/BTC, so it's about the price, not the amount he's selling.
Even more, leaving with 50k EUR may not be great (we're not in the Shengen yet, remember?) and also depositing such amount to a bank (even more, one that's foreign for him) may rise questions.
I will add that (I remember your story on Greek airports!) if he returns too quick from Bucharest may also rise some eyebrows
All in all, the suggestions are not bad, but I'd do that only together with an actual vacation or at least city break. This way the price of the plane will actually worth it even for much lower amount of bitcoins sold.