If you want a cheap flight from Inverness to Buenos Aires, you've got zero airlines to choose from.
Make sure you use the search options above to search for flights to other airports in Buenos Aires, not just Buenos Aires Arpt. Jorge Newbery Airport. The more options you look at, the better your chance of finding a cheap deal.
If you're planning on going to Buenos Aires during this time, you could take a look at other airport options. Or you could try to get a last-minute bargain.