Cheap flights from Cardiff to Buenos Aires
Cheap return flights from Cardiff to Buenos Aires
Find the best deals
All prices shown are per person based on return flights only. Prices found in the last 48 hours.
Buenos Aires flight facts
What you need to know
What are the cheapest airlines?
- Iberia
- Air Europa
- KLM
These airlines usually offer the cheapest flights from Cardiff to Buenos Aires.
What airlines fly indirectly?
- British Airways
- Lufthansa
- Air France
These airlines fly from Cardiff to Buenos Aires, but you’ll have at least one layover.
How long is the flight?
19 hours 30 minutes
This is the shortest flight time from Cardiff to Buenos Aires.
Alternative flights from the UK to Buenos Aires
Check out prices for other routes
Alternative flights from Cardiff
You might find cheaper flights nearby
Today alone, Netflights has searched over five flights. 05 / Feb / 2026 is currently the lowest priced day of the year to fly the Cardiff/Buenos Aires route. There are around 35 flights on any given week from the UK to Buenos Aires and the cheapest month to fly right now is February. Not suitable? Try running another search or viewing all cheap flight deals.
How to get cheap flights from Cardiff to Buenos Aires
Tips and advice from our flight experts
You've searched for flights from Cardiff to Buenos Aires. We've found 15 flights and compared them to give you the best offers. Iberia is, on average, the cheapest airline for this route. Look out for them! The cheapest offer we've found is a one-way ticket for the route Cardiff to Buenos Aires on 22/02/2026 at 00:15 for £52.
We've scanned hundreds of airfares from dozens of airlines across the globe. In total, we've found 10 airlines that operate the 11,800 km flight from Cardiff to Buenos Aires.
To find the best offers, consider booking in advance or looking for last-minute deals. The low season is typically from May to September. Iberia is a popular and affordable choice for this route, with an average flight duration of 19 hours 30 minutes. After selecting an offer, fill out your information and proceed with payment. Don't forget to check our hotel booking options or use our flight + hotel service to save time and money!
Other popular destinations near Buenos Aires
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