If you want a cheap flight from Cardiff to Buenos Aires, you've got one airlines to choose from. You can use the search box to filter your preferences, but we've found that the cheapest day to fly is 23 / Oct / 2025.
Make sure you use the search options above to search for flights to other airports in Buenos Aires, not just Buenos Aires Ezeiza Ministro Pistarini Airport. The more options you look at, the better your chance of finding a cheap deal. Just so you know, the flight typically takes 15 hrs 35 mins.
There are about two 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.
