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Cheap flights from London to Buenos Aires from €527

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London to Buenos Aires departing on 10/11. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Lufthansa Logo
16:30 - 07:55LHR-EZE
18h 25m1 stop
Lufthansa Logo
17:45 - 12:50EZE-LHR
16h 05m1 stop
€927Lufthansa
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Tue, 9 Dec - Sat, 13 Dec
Avianca Logo
22:05 - 05:45LHR-EZE
35h 40m1 stop
Avianca Logo
16:45 - 15:35EZE-LHR
18h 50m1 stop
€931Avianca
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Sun, 12 Apr - Tue, 14 Apr
United Airlines Logo
11:35 - 09:20LHR-EZE
48h 45m2 stops
United Airlines Logo
23:55 - 07:30EZE-LHR
28h 35m1 stop
€947United Airlines
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Sun, 9 Nov - Sun, 23 Nov
Turkish Airlines Logo
18:00 - 22:25LHR-EZE
31h 25m2 stops
Turkish Airlines Logo
23:55 - 09:55EZE-LHR
31h 00m2 stops
€962Turkish Airlines
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Mon, 1 Dec - Tue, 9 Dec
Air Europa Logo
10:00 - 08:50LGW-EZE
25h 50m1 stop
Air Europa Logo
13:15 - 16:25EZE-LGW
24h 10m1 stop
€995Air Europa
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Mon, 16 Mar - Sun, 22 Mar
SWISS Logo
17:25 - 11:50LHR-EZE
45h 25m3 stops
SWISS Logo
14:40 - 21:25EZE-LHR
27h 45m3 stops
€998SWISS
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Mon, 1 Dec - Wed, 10 Dec
Air Europa Logo
10:00 - 08:50LGW-EZE
25h 50m1 stop
Air Europa Logo
13:15 - 09:00EZE-LGW
16h 45m1 stop
€1,006Air Europa
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Sun, 15 Mar - Fri, 20 Mar
United Airlines Logo
11:35 - 07:20LHR-EZE
46h 45m2 stops
United Airlines Logo
23:55 - 06:20EZE-LHR
27h 25m2 stops
€1,011United Airlines
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Sat, 15 Nov - Mon, 17 Nov
SWISS Logo
20:05 - 11:50LHR-EZE
42h 45m2 stops
SWISS Logo
02:25 - 13:00EZE-LHR
31h 35m2 stops
€1,015SWISS
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Mon, 1 Dec - Tue, 9 Dec
Turkish Airlines Logo
10:15 - 22:25LGW-EZE
39h 10m2 stops
Turkish Airlines Logo
23:55 - 09:20EZE-LGW
30h 25m2 stops
€1,072Turkish Airlines
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Sun, 23 Nov - Thu, 11 Dec

Lufthansa flights from London to Buenos Aires

Our best Lufthansa deals on London to Buenos Aires flight tickets
Lufthansa
9 Dec
LHR16:30London Heathrow
18h 25m
1 stop
EZE07:55Buenos Aires Ministro Pistarini
13 Dec
EZE17:45Buenos Aires Ministro Pistarini
16h 05m
1 stop
LHR12:50London Heathrow
€927
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Lufthansa
8 Dec
LCY09:50London City
25h 05m
1 stop
EZE07:55Buenos Aires Ministro Pistarini
23 Dec
EZE17:45Buenos Aires Ministro Pistarini
20h 50m
1 stop
LCY17:35London City
€975
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Lufthansa
8 Dec
LHR19:30London Heathrow
39h 25m
1 stop
EZE07:55Buenos Aires Ministro Pistarini
23 Dec
EZE17:45Buenos Aires Ministro Pistarini
16h 05m
1 stop
LHR12:50London Heathrow
€991
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United Airlines flights from London to Buenos Aires

Our best United Airlines deals on London to Buenos Aires flight tickets
United Airlines
8 Nov
LHR16:20London Heathrow
42h 00m
2 stops
EZE07:20Buenos Aires Ministro Pistarini
15 Nov
EZE23:55Buenos Aires Ministro Pistarini
36h 55m
2 stops
LHR15:50London Heathrow
€919
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United Airlines
9 Nov
LHR11:35London Heathrow
48h 45m
2 stops
EZE09:20Buenos Aires Ministro Pistarini
23 Nov
EZE23:55Buenos Aires Ministro Pistarini
28h 35m
1 stop
LHR07:30London Heathrow
€947
Find similar
United Airlines
8 Nov
LHR16:20London Heathrow
42h 00m
2 stops
EZE07:20Buenos Aires Ministro Pistarini
15 Nov
EZE23:55Buenos Aires Ministro Pistarini
31h 55m
2 stops
LHR10:50London Heathrow
€953
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momondo Fare Finder

 
Customise your flight search to find flights from London to Buenos Aires that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 13,528 searches. Data last updated 30 October 2025.
Use the filters below to find and compare flights from London to Buenos Aires that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Tue 9/12

16:30-07:55

1 stop18h 25m

Buenos Aires Ministro Pistarini

Sat 13/12

17:45-12:50

1 stop16h 05m

€927

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Sun 12/4

22:05-05:45

1 stop35h 40m

Buenos Aires Ministro Pistarini

Tue 14/4

16:45-15:35

1 stop18h 50m

€931

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Sun 9/11

11:35-09:20

2 stops48h 45m

Buenos Aires Ministro Pistarini

Sun 23/11

23:55-07:30

1 stop28h 35m

€947

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Mon 1/12

18:00-22:25

2 stops31h 25m

Buenos Aires Ministro Pistarini

Tue 9/12

23:55-09:55

2 stops31h 00m

€962

LondonBuenos Aires

LGW - EZE

LGWEZE

London Gatwick

Mon 16/3

10:00-08:50

1 stop25h 50m

Buenos Aires Ministro Pistarini

Sun 22/3

13:15-16:25

1 stop24h 10m

€995

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Mon 1/12

17:25-11:50

3 stops45h 25m

Buenos Aires Ministro Pistarini

Wed 10/12

14:40-21:25

3 stops27h 45m

€998

LondonBuenos Aires

LGW - EZE

LGWEZE

London Gatwick

Sun 15/3

10:00-08:50

1 stop25h 50m

Buenos Aires Ministro Pistarini

Fri 20/3

13:15-09:00

1 stop16h 45m

€1,006

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Sat 15/11

11:35-07:20

2 stops46h 45m

Buenos Aires Ministro Pistarini

Mon 17/11

23:55-06:20

2 stops27h 25m

€1,011

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Mon 1/12

20:05-11:50

2 stops42h 45m

Buenos Aires Ministro Pistarini

Tue 9/12

02:25-13:00

2 stops31h 35m

€1,015

LondonBuenos Aires

LGW - EZE

LGWEZE

London Gatwick

Sun 23/11

10:15-22:25

2 stops39h 10m

Buenos Aires Ministro Pistarini

Thu 11/12

23:55-09:20

2 stops30h 25m

€1,072

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 cheapest month to fly to Buenos Aires?

In general, September 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 €973. If you aren’t able to travel to Buenos Aires during the month of September, then flying in March is also cheap. Prices for this month can be found on momondo for an average of €998.

What is the cheapest day to depart on your flight to Buenos Aires?

According to our data, Monday is the cheapest day to fly to Buenos Aires from London. The lowest ticket price found for a Monday departure recently was €771. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. The most expensive day to fly to Buenos Aires is Thursday, with ticket prices averaging around €1,755.

What is the cheapest time of day to depart on your flight to Buenos Aires?

Our data shows that the cheapest London to Buenos Aires flights are usually those with departure times in the afternoon. Our users have found flights to Buenos Aires in the afternoon for as low as €763. In contrast, the most expensive time of day to depart to Buenos Aires is in the evening when prices are around €1,060.

How far in advance should I book a flight 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 €1,177 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 €999 on momondo.

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

As of October 2025, prices for London to Buenos Aires flights are approximately 4% more expensive 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

Fastest flight time

16h 45m

Direct flights

Tue

Airports in Buenos Aires

1 airport
The fastest flight from London to Buenos Aires takes 16h 45m
Direct flights go from London to Buenos Aires on Tuesday. There are no airlines offering direct flights..
There is 1 airport near Buenos Aires: Buenos Aires Ministro Pistarini (EZE)
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  • 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 16h 00m.

  • 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

Airports listed have a maximum distance of 27.4 km from Buenos Aires
Buenos Aires Jorge Newbery Airport
Buenos Aires Ministro Pistarini Airport