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Cheap flights from London to Buenos Aires from €661

1 adult
1 adult, Economy, 0 bags

Find the cheapest flights from London to Buenos Aires

Cheap return flights

Enter your travel dates to find the best prices.
United Airlines Logo
12:05 - 07:20LHR  London Heathrow-EZE Buenos Aires Ministro Pistarini
22h 15m1 stop Houston George Bush Intcntl
United Airlines Logo
23:55 - 10:15EZE  Buenos Aires Ministro Pistarini-LHR London Heathrow
31h 20m1 stop Houston George Bush Intcntl
€1,157United Airlines
Sun, 22 Nov - Tue, 8 Dec
United Airlines Logo
12:05 - 07:20LHR  London Heathrow-EZE Buenos Aires Ministro Pistarini
22h 15m1 stop Houston George Bush Intcntl
United Airlines Logo
22:05 - 05:55EZE  Buenos Aires Ministro Pistarini-LHR London Heathrow
28h 50m2 stops Houston George Bush Intcntl Chicago O'Hare Intl
€1,158United Airlines
Mon, 16 Nov - Tue, 8 Dec
United Airlines Logo
12:05 - 07:20LHR  London Heathrow-EZE Buenos Aires Ministro Pistarini
22h 15m1 stop Houston George Bush Intcntl
United Airlines Logo
23:55 - 09:40EZE  Buenos Aires Ministro Pistarini-LHR London Heathrow
30h 45m2 stops Houston George Bush Intcntl Denver Intl
€1,159United Airlines
Sat, 14 Nov - Mon, 16 Nov
United Airlines Logo
11:35 - 07:20LHR  London Heathrow-EZE Buenos Aires Ministro Pistarini
46h 45m2 stops Denver Intl Houston George Bush Intcntl
United Airlines Logo
23:55 - 07:40EZE  Buenos Aires Ministro Pistarini-LHR London Heathrow
28h 45m1 stop Houston George Bush Intcntl
€1,160United Airlines
Sat, 21 Nov - Mon, 7 Dec
United Airlines Logo
11:35 - 07:20LHR  London Heathrow-EZE Buenos Aires Ministro Pistarini
46h 45m2 stops Denver Intl Houston George Bush Intcntl
United Airlines Logo
23:55 - 07:40EZE  Buenos Aires Ministro Pistarini-LHR London Heathrow
28h 45m1 stop Houston George Bush Intcntl
€1,162United Airlines
Sat, 21 Nov - Sun, 6 Dec
United Airlines Logo
11:35 - 07:20LHR  London Heathrow-EZE Buenos Aires Ministro Pistarini
46h 45m2 stops Denver Intl Houston George Bush Intcntl
United Airlines Logo
23:55 - 07:40EZE  Buenos Aires Ministro Pistarini-LHR London Heathrow
28h 45m1 stop Houston George Bush Intcntl
€1,163United Airlines
Sat, 21 Nov - Mon, 7 Dec
LATAM Airlines Logo
19:40 - 18:35LHR  London Heathrow-EZE Buenos Aires Ministro Pistarini
25h 55m2 stops Madrid Barajas Lima J Chavez Intl
LATAM Airlines Logo
17:00 - 18:55EZE  Buenos Aires Ministro Pistarini-LHR London Heathrow
21h 55m2 stops Sao Paulo Guarulhos Intl Madrid Barajas
€1,163LATAM Airlines
Mon, 22 Mar - Sat, 3 Apr
Multiple Airlines Logo
08:30 - 07:55LHR  London Heathrow-EZE Buenos Aires Ministro Pistarini
26h 25m1 stop Frankfurt am Main
Multiple Airlines Logo
14:40 - 13:00EZE  Buenos Aires Ministro Pistarini-LHR London Heathrow
19h 20m2 stops Sao Paulo Guarulhos Intl Zurich
€1,164Multiple Airlines
Wed, 25 Nov - Wed, 9 Dec
United Airlines Logo
08:00 - 07:20LHR  London Heathrow-EZE Buenos Aires Ministro Pistarini
26h 20m2 stops Newark Houston George Bush Intcntl
United Airlines Logo
23:55 - 07:55EZE  Buenos Aires Ministro Pistarini-LHR London Heathrow
29h 00m2 stops Houston George Bush Intcntl Chicago O'Hare Intl
€1,166United Airlines
Thu, 21 Jan - Tue, 9 Feb
United Airlines Logo
11:35 - 07:20LHR  London Heathrow-EZE Buenos Aires Ministro Pistarini
46h 45m2 stops Denver Intl Houston George Bush Intcntl
United Airlines Logo
22:05 - 05:55EZE  Buenos Aires Ministro Pistarini-LHR London Heathrow
28h 50m2 stops Houston George Bush Intcntl Chicago O'Hare Intl
€1,167United Airlines
Mon, 1 Feb - Fri, 19 Feb

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British Airways flights from London to Buenos Aires

Our best British Airways deals on London to Buenos Aires flight tickets
British Airways
30 Mar
LHR19:25London Heathrow
14h 00m
EZE05:25Buenos Aires Ministro Pistarini
12 Apr
EZE15:10Buenos Aires Ministro Pistarini
13h 20m
LHR08:30London Heathrow
€1,172
British Airways
20 Mar
LHR19:40London Heathrow
24h 45m
1 stop
EZE17:25Buenos Aires Ministro Pistarini
1 Apr
EZE15:10Buenos Aires Ministro Pistarini
13h 20m
LHR08:30London Heathrow
€1,234
British Airways
20 Mar
LHR19:40London Heathrow
24h 45m
1 stop
EZE17:25Buenos Aires Ministro Pistarini
1 Apr
EZE15:10Buenos Aires Ministro Pistarini
13h 20m
LHR08:30London Heathrow
€1,235

KLM flights from London to Buenos Aires

Our best KLM deals on London to Buenos Aires flight tickets
KLM
21 Jan
LHR20:25London Heathrow
26h 55m
2 stops
EZE20:20Buenos Aires Ministro Pistarini
2 Feb
EZE22:40Buenos Aires Ministro Pistarini
19h 10m
2 stops
LHR20:50London Heathrow
€1,233
KLM
18 Jan
LGW10:00London Gatwick
32h 10m
2 stops
EZE15:10Buenos Aires Ministro Pistarini
3 Feb
EZE17:00Buenos Aires Ministro Pistarini
37h 00m
2 stops
LGW09:00London Gatwick
€1,289
KLM
9 Nov
LHR20:25London Heathrow
34h 50m
2 stops
EZE04:15Buenos Aires Ministro Pistarini
24 Nov
EZE17:00Buenos Aires Ministro Pistarini
20h 05m
1 stop
LHR16:05London Heathrow
€1,895

momondo Fare Finder

 
Use the filters below to find and compare flights from London to Buenos Aires that are best for you.

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Route

Depart

Return

Price

Cheapest return flight

LondonBuenos Aires

LHR London Heathrow - EZE Buenos Aires Ministro Pistarini

LHREZE

London Heathrow

Sun 22/11

12:05-07:20

1 stop22h 15m

Buenos Aires Ministro Pistarini

Tue 8/12

23:55-10:15

1 stop31h 20m

€1,157

LondonBuenos Aires

LHR London Heathrow - EZE Buenos Aires Ministro Pistarini

LHREZE

London Heathrow

Mon 16/11

12:05-07:20

1 stop22h 15m

Buenos Aires Ministro Pistarini

Tue 8/12

22:05-05:55

2 stops28h 50m

€1,158

LondonBuenos Aires

LHR London Heathrow - EZE Buenos Aires Ministro Pistarini

LHREZE

London Heathrow

Sat 14/11

12:05-07:20

1 stop22h 15m

Buenos Aires Ministro Pistarini

Mon 16/11

23:55-09:40

2 stops30h 45m

€1,159

LondonBuenos Aires

LHR London Heathrow - EZE Buenos Aires Ministro Pistarini

LHREZE

London Heathrow

Sat 21/11

11:35-07:20

2 stops46h 45m

Buenos Aires Ministro Pistarini

Mon 7/12

23:55-07:40

1 stop28h 45m

€1,160

LondonBuenos Aires

LHR London Heathrow - EZE Buenos Aires Ministro Pistarini

LHREZE

London Heathrow

Sat 21/11

11:35-07:20

2 stops46h 45m

Buenos Aires Ministro Pistarini

Sun 6/12

23:55-07:40

1 stop28h 45m

€1,162

LondonBuenos Aires

LHR London Heathrow - EZE Buenos Aires Ministro Pistarini

LHREZE

London Heathrow

Sat 21/11

11:35-07:20

2 stops46h 45m

Buenos Aires Ministro Pistarini

Mon 7/12

23:55-07:40

1 stop28h 45m

€1,163

LondonBuenos Aires

LHR London Heathrow - EZE Buenos Aires Ministro Pistarini

LHREZE

London Heathrow

Mon 22/3

19:40-18:35

2 stops25h 55m

Buenos Aires Ministro Pistarini

Sat 3/4

17:00-18:55

2 stops21h 55m

€1,163
Fastest return journey

LondonBuenos Aires

LHR London Heathrow - EZE Buenos Aires Ministro Pistarini

LHREZE

London Heathrow

Wed 25/11

08:30-07:55

1 stop26h 25m

Buenos Aires Ministro Pistarini

Wed 9/12

14:40-13:00

2 stops19h 20m

€1,164

LondonBuenos Aires

LHR London Heathrow - EZE Buenos Aires Ministro Pistarini

LHREZE

London Heathrow

Thu 21/1

08:00-07:20

2 stops26h 20m

Buenos Aires Ministro Pistarini

Tue 9/2

23:55-07:55

2 stops29h 00m

€1,166

LondonBuenos Aires

LHR London Heathrow - EZE Buenos Aires Ministro Pistarini

LHREZE

London Heathrow

Mon 1/2

11:35-07:20

2 stops46h 45m

Buenos Aires Ministro Pistarini

Fri 19/2

22:05-05:55

2 stops28h 50m

€1,167

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Buenos Aires from

How to get the cheapest flight ticket from London to Buenos Aires

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between London and Buenos Aires?

Prices are currently typical for flights on this route.

Typical prices usually range from €1,082 to €1,389.
The lowest price recently found on this route was €1,157.

What is the cheapest month to fly to Buenos Aires?

In general, May is the cheapest month to fly from London to Buenos Aires. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around €1,042. If you aren’t able to travel to Buenos Aires during the month of May, then flying in April is also cheap. Prices for this month can be found on momondo for an average of €1,104.

How far in advance should I book a flight from London to Buenos Aires?

You are more likely to see cheaper flights to Buenos Aires from London when booking weeks ahead of your departure date. In general, you can expect to find flights to Buenos Aires for around €1,251 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Buenos Aires from London for as low as €1,138 on momondo.

How have London to Buenos Aires flight prices changed over time?

As of November 2026, prices for London to Buenos Aires flights are approximately 2% cheaper when compared to flights at the same time last year.

When to book flights from London to Buenos Aires

Are you open to changing your travel dates? Check out the ideal times to fly from London to Buenos Aires according to our flight data. Find out which month and days have the cheapest flights.
Estimated return price

Cheap London to Buenos Aires (LON to BUE) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from London to Buenos Aires

Best price found

€661

Fastest flight time

15h 50m

Direct flights

Every day

Airports in Buenos Aires

2 airports
The best one-way flight to Buenos Aires from London in the past 72 hours is €661. The best return flight deal from London to Buenos Aires found on momondo in the last 72 hours is €1,157.
The fastest flight from London to Buenos Aires takes 15h 50m
Direct flights go from London to Buenos Aires every day.
There are 2 airports in Buenos Aires. From London there are direct flights to Buenos Aires Ministro Pistarini (EZE).
Search flight deals

Frequently asked questions about flying from London to Buenos Aires

  • How far is London to Buenos Aires by plane?

    London and Buenos Aires are 11120.2 km apart from one another. By plane, this route typically takes 15h 50m.

  • When did momondo last update prices for flights from London to Buenos Aires?

    Prices for flights from London to Buenos Aires were last updated today.

  • How old do you have to be to fly from London to Buenos Aires?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from London to Buenos Aires.

  • What documentation or ID do you need to fly to Buenos Aires?

    The necessary travel and health documents for your Buenos Aires trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's licence and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from London to Buenos Aires?

Why use momondo?

Why should I use momondo to find a flight deal from London to Buenos Aires?

Finding the right flight to Buenos Aires from London is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Buenos Aires quick and easy, saving you time and money.

Can I find flights from London to Buenos Aires with flexible booking policies on momondo?

Yes. All flights to Buenos Aires from London on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from London to Buenos Aires?

momondo provides multiple filters to help you find the best flight to Buenos Aires from London. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from London to Buenos Aires right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Buenos Aires from London. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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Find better results for your trip to Argentina

Fly into one of these airports located in Buenos Aires

Buenos Aires Jorge Newbery Airport
Buenos Aires Ministro Pistarini Airport