Cheap flights from London to Argentina from £339

The month of September is, on average, the cheapest month to fly to Argentina from London, with most prices found around £886. If you aren’t able to travel to Argentina during the month of September, then flying in May is also cheap. Prices for this month can be found on momondo for an average of £896.

The cheapest day to depart on your flight to Argentina is on a Tuesday when prices can be found for as low as £974. This is often the case because there is less demand to fly during this day of the week. On the other hand, Saturday is the most expensive day to depart from London because it is more convenient for both business and leisure travellers. As a result, prices tend to be around £1,226.

Fly from London Heathrow to Buenos Aires Ministro Pistarini for the best London - Argentina flight prices

You are more likely to see cheaper flights to Argentina from London when booking weeks ahead of your departure date. In general, you can expect to find flights to Argentina for around £1,054 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Argentina from London for as low as £889 on momondo.

There are 2 cabin classes available to choose from on London to Argentina flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

You could potentially save up to 24% on your flight if you consider stops on a London to Argentina flight.

Avianca, LEVEL, and ITA Airways are the most popular carriers operating from London to Argentina

British Airways, Avianca and Lufthansa are the top three most popular airlines that fly to Argentina from London according to our data. British Airways is the first choice among our users, with 28% of people opting to fly with this airline when travelling to Argentina. Keep in mind that there are 9 different airlines that fly to Argentina on a routine basis, so you have a few additional options to choose from.

Historically, on average around 0% of flights between London and Argentina have experienced a delay on any given week. The average delay length over the past 12 months has been 0 minutes.

Generally, flights departing in the evening tend to experience fewer delays. Flights departing in the evening have, in the past, seen delays more frequently in comparison.

As of March 2026, there are 3 flights per day flying from London to Argentina. The most common time of day flights depart is 20:00, with 100% of flights taking off in the evening.

21 flights are operational weekly from London to Argentina as of March 2026. The most popular departure day for this route is Mon, with 14% of flights per week taking off on this day.