Finding cheap flights to Buenos Aires is often easier when your dates are flexible, particularly around the southern hemisphere’s summer, Christmas and New Year, when demand can rise. Travelling just outside the busiest holiday periods may offer more choice, while shoulder-season dates can also make it easier to compare fares and convenient connections. It is worth searching across several departure dates rather than focusing on a single weekend, especially if your plans allow a longer or shorter stay.

London usually offers the widest range of international departure options, but fares from Manchester, Birmingham, Edinburgh and other UK airports can sometimes be competitive once the cost of reaching London is included. Compare the complete journey, including luggage, seat selection, rail travel and any overnight accommodation needed for an early departure. Buenos Aires is served by both Ezeiza International Airport and Aeroparque, so check which airport your itinerary uses and allow for the transfer into the city when assessing convenience. Booking well ahead can provide a broader choice of dates and connection times, although keeping an eye on fares over several weeks may help you spot a better-value option rather than relying on a fixed booking rule.

For flights to Buenos Aires from the UK, the main choice is often between departing from a London airport or starting closer to home with a connection. London can offer a wider range of itineraries, while regional departures may reduce the need for an expensive or inconvenient journey across the UK. When comparing options, look beyond the headline fare: check whether the booking is on one ticket, whether baggage is checked through, and whether a connection involves changing airports or allowing for a separate transfer.

Buenos Aires is served by two airports, so the arrival point matters. International itineraries commonly use Ministro Pistarini International Airport, known as Ezeiza, which is outside the city and requires onward travel by pre-booked car, taxi, ride-hailing service or bus. Jorge Newbery Airport, or Aeroparque, is much closer to the central neighbourhoods and is particularly relevant when an itinerary continues from another Argentine or nearby South American city. If a booking combines the two, allow plenty of time for the cross-city journey, as traffic can be heavy. Comparing the airport shown on each option, the connection arrangements and the ease of reaching your accommodation can be as important as the flight time.