I know is more expensive than your request, but within cheap models I can recommend this:
http://articulo.mercadolibre.com.ar/MLA-587088135-auricular-sennheiser-hd-407-hi-fi-vincha-ideal-estudio-_JM
You can find some panasonic headphones for around 300 that should be ok, but if you need just for one time on plane, I would just use any earphones already at home, otherwise I would invest few more pesos for something a bit better. In past I owned several cheap models and they died quite soon, so I decided to invest a bit more and I have this sennheiser for 3 years, working flawless. Sometimes is better to give twice more, to get something decent, and headphones are in this category ...