Flights from London to Buenos Aires

Our cheapest offers for flights from London to Buenos Aires

Here you can compare cheap flights from London (LON) to Buenos Aires (BUE) for one-way or return trips. The following offers were searched for and found on idealo during the last few days. Or start your own flight search to Buenos Aires. Prices and availability may change at any time.

Outbound Return Airlines Shop Baggage Price
London
Buenos Aires
Outbound
06/07/26
2 Stopovers (IST, GRU)
TK1242, TK0215, TK0015
39h 15min
Return
31/07/26
1 Stopover (IST)
TK0016, TK1241
30h 20min
Turkish Airlines
£897
Best option
London
Buenos Aires
Outbound
31/01/26
1 Stopover (FCO)
AR7231, AR1141
20h 05min
Return
03/02/26
1 Stopover (FCO)
AZ0683, AZ0212
33h 55min
Aerolineas Argentinas
£1,133
London
Buenos Aires
Please note: transfer for connecting flight
Outbound
31/01/26
1 Stopover (MAD)
FR5994, AR1133
19h 15min
Return
03/02/26
1 Stopover (MAD)
UX0042, FR0348
19h 15min
Ryanair, Aerolineas Argentinas
£1,377
London
Buenos Aires
Outbound
31/01/26
3 Stopovers (CIA, FCO, IAD, IAH)
FR2455, UA0885, UA1524, UA0831
74h 30min
Return
03/02/26
3 Stopovers (IAH, EWR, MAD)
UA0818, UA1886, UA0051, FR5995
42h 35min
Ryanair, United Airlines ?
£949
London
Buenos Aires
Outbound
31/01/26
4 Stopovers (ZRH, ARN, FRA, IAH)
LX0457, LX1250, UA9015, UA8866, UA0831
70h 05min
Return
03/02/26
2 Stopovers (IAH, AMS)
UA0832, UA0020, BA8452
32h 40min
Swiss International Air Lines, United Airlines ?
£1,086
London
Buenos Aires
Outbound
31/01/26
1 Stopover (FCO)
AZ0211, AR1141
20h 05min
Return
03/02/26
1 Stopover (FCO)
AZ0683, AZ0214
39h 10min
Italia Trasporto Aereo, Aerolineas Argentinas
£1,186
London
Buenos Aires
Outbound
31/01/26
1 Stopover (FCO)
AZ0211, AZ0680
24h 10min
Return
03/02/26
1 Stopover (FCO)
AZ0683, AZ0212
33h 55min
Italia Trasporto Aereo ?
£1,254
London
Buenos Aires
Outbound
31/01/26
1 Stopover (FCO)
AZ0211, AZ0680
24h 10min
Return
03/02/26
1 Stopover (FCO)
AZ0681, AZ0212
18h 05min
Italia Trasporto Aereo ?
£1,343
London
Buenos Aires
Outbound
31/01/26
1 Stopover (AMS)
KL0984, KL0701
24h 40min
Return
03/02/26
1 Stopover (AMS)
KL0702, KL0989
21h 10min
KLM ?
£1,597
London
Buenos Aires
Outbound
01/01/26
2 Stopovers (AMS, FCO)
BA8451, AZ0107, AZ0680
48h 50min
Return
09/01/26
4 Stopovers (DFW, BCN, FCO, LIN)
AA0996, AA0192, AZ0079, AZ2044, AZ0220
65h 05min
British Airways, Italia Trasporto Aereo ?
£1,599
Prices based on recent searches, subject to last-minute changes
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Tips and tricks to help you find cheap flights from London to Buenos Aires

Favourite airline: Air Europa
63 % of travellers choose to book flights on this route with Air Europa, ITA and KLM.
Air Europa
32 %
ITA
19 %
KLM
12 %
Cheapest weekday: Tuesday
The cheapest flights on this route are operated on Tuesday.
Favourite connection: via Madrid
The most popular flights on this route are via Madrid and are booked by 38 % of all travellers.
Route
bookings
1 stopover Madrid Barajas
18h 15min, from 940 £
38 %
1 stopover Rome Fiumicino Leonardo da Vinci
38h 45min, from 893 £
15 %
1 stopover Amsterdam Schiphol
36h 25min, from 756 £
11 %

Important flight information

Flight information: London - Buenos Aires

Outbound and return from 896,80 £
Flight duration min. 13:45 / max. 13:55
Return flight duration min. 13:00/ max. 13:15
Distance 11141 km
Flights per week 16
Departure airport Airport London (LCY, LGW, LHR, LTN, STN, SEN) (LON)
Arrival airport Airport Buenos Aires - all Airports (EZE, AEP) (BUE)
Destination country Flights to Argentina
Flight destinations with a similar price