Earn point on your loyalty program!arrow arc left

Cheap flights from London (LCY) to Buenos Aires (AEP)

Know your dates, get live prices in seconds
airplane logo

pin logo

calendar
Departure
calendar backward
Return
airplane logo
1 Adults (11+)
0 Children (2~11)
0 Infants (0~2)
Save up to 31%
Book Flight + Hotel at the same time

How to find the cheapest flight from London (LCY) to Buenos Aires (AEP)

How to find the cheapest flight from London (LCY) to Buenos Aires (AEP)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.
How to find the cheapest flight from London (LCY) to Buenos Aires (AEP)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.
How to find the cheapest flight from London (LCY) to Buenos Aires (AEP)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.

Cheap flights from London to Buenos Aires in April , May 2026

14 Apr - 19 May $ 1,818.00
LCY
London
KLM Royal Dutch Airlines
2 STOPS
AEP
Buenos Aires
AEP
Buenos Aires
KLM Royal Dutch Airlines
2 STOPS
LCY
London
Pick dates
14 Apr - 19 May $ 1,841.00
LCY
London
KLM Royal Dutch Airlines
2 STOPS
AEP
Buenos Aires
AEP
Buenos Aires
KLM Royal Dutch Airlines
2 STOPS
LCY
London
Pick dates
14 Apr - 19 May $ 1,860.00
LCY
London
KLM Royal Dutch Airlines
2 STOPS
AEP
Buenos Aires
AEP
Buenos Aires
KLM Royal Dutch Airlines
2 STOPS
LCY
London
Pick dates

Last minute flights from London to Buenos Aires

28 Apr - 01 May $ 2,136.00
LCY
London
KLM Royal Dutch Airlines
3 STOPS
AEP
Buenos Aires
AEP
Buenos Aires
KLM Royal Dutch Airlines
2 STOPS
LCY
London
Pick dates
28 Apr - 01 May $ 2,146.00
LCY
London
KLM Royal Dutch Airlines
3 STOPS
AEP
Buenos Aires
AEP
Buenos Aires
KLM Royal Dutch Airlines
2 STOPS
LCY
London
Pick dates
27 Apr - 01 May $ 2,329.00
LCY
London
Swiss International Air Lines
2 STOPS
AEP
Buenos Aires
AEP
Buenos Aires
Swiss International Air Lines
2 STOPS
LCY
London
Pick dates

One-way flights to Buenos Aires from London

8:15 PM - 9:15 PM
Avianca
3 Stops
37h 25m
LCY - AEP
$ 666
Kiwi
Pick dates
6:05 PM - 6:35 AM
Swiss International Air Lines
2 Stops
19h 35m
LCY - AEP
$ 1,551
Kiwi
Pick dates
1:10 PM - 6:35 AM
Swiss International Air Lines
2 Stops
24h 30m
LCY - AEP
$ 1,551
Kiwi
Pick dates

How to find the cheapest flight from London (LCY) to Buenos Aires (AEP)

Related info for your journey
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.
How to find the cheapest flight from London (LCY) to Buenos Aires (AEP)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.
How to find the cheapest flight from London (LCY) to Buenos Aires (AEP)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.