If you want a cheap flight from Aberdeen to Buenos Aires, you've got one airlines to choose from.
You can use the filters on your search to see more flights and find cheaper rates – Buenos Aires has more than one airport. So if you don't need to fly into Buenos Aires Arpt. Jorge Newbery Airport, it's worth checking your other options. The 11488 km flight usually takes about 20 hrs 35 mins.
There are about ten flights to or via Buenos Aires every week, so you have plenty of options. Keep your eye out for flights
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.