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Cheap flights from the United Kingdom to Buenos Aires from £384

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/9. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — BUE
21 Jul — 28 Jul1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from United Kingdom to Buenos Aires

Enter your travel dates to find the best prices.

Cheapest flights from United Kingdom to Buenos Aires
Explore the most affordable flight options available from United Kingdom to Buenos Aires. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 21 June 2026.

Thu 12/1111:30
MAN
-
EZE
2 stops30h 40m
Air Canada
Sun 29/1116:45
EZE
-
MAN
2 stops36h 55m
Air Canada
Deal found 17/6£809
Tue 10/1118:45
MAN
-
EZE
2 stops24h 05m
SWISS
Wed 25/1102:20
EZE
-
MAN
2 stops31h 55m
SWISS
Deal found 17/6£855
Thu 12/1111:30
MAN
-
EZE
2 stops30h 40m
Air Canada
Sat 28/1116:45
EZE
-
MAN
2 stops36h 55m
Air Canada
Deal found 17/6£860
Tue 15/916:05
MAN
-
EZE
2 stops22h 40m
British Airways
Mon 28/913:00
EZE
-
MAN
1 stop15h 50m
British Airways
Deal found 16/6£862
Mon 6/713:55
MAN
-
EZE
1 stop30h 10m
British Airways
Mon 13/712:25
EZE
-
MAN
2 stops30h 05m
British Airways
Deal found 18/6£870
Tue 10/1118:45
MAN
-
EZE
2 stops24h 05m
Multiple Airlines
Thu 26/1117:45
EZE
-
MAN
1 stop26h 00m
Multiple Airlines
Deal found 17/6£874
Thu 10/921:20
LHR
-
AEP
1 stop17h 10m
LATAM Airlines
Mon 28/918:20
AEP
-
LHR
1 stop16h 45m
LATAM Airlines
Deal found 17/6£887
Mon 21/905:55
STN
-
EZE
2 stops47h 25m
Multiple Airlines
Mon 12/1010:50
EZE
-
STN
1 stop19h 45m
Multiple Airlines
Deal found 21/6£887
Fri 13/1113:00
LHR
-
EZE
2 stops29h 10m
Air Canada
Fri 27/1116:45
EZE
-
LHR
3 stops35h 25m
Air Canada
Deal found 20/6£887
Thu 19/1117:25
LGW
-
EZE
1 stop18h 25m
Air Europa
Sun 29/1113:15
EZE
-
LGW
1 stop24h 10m
Air Europa
Deal found 19/6£888
Mon 16/1115:15
STN
-
EZE
1 stop19h 30m
Multiple Airlines
Thu 3/1214:25
EZE
-
STN
1 stop21h 20m
Multiple Airlines
Deal found 19/6£888
Mon 16/1110:00
LGW
-
EZE
1 stop25h 50m
Air Europa
Fri 27/1113:15
EZE
-
LGW
1 stop16h 45m
Air Europa
Deal found 19/6£889

Find flight deals from United Kingdom to Buenos Aires

Keep the following information in mind while searching for United Kingdom to Buenos Aires flight deals. Data was last updated 21 June 2026.

Round-trip from

£809

One-way from

£384

Popular in

December

Cheapest in

September

Average price

£937

Good round-trip deal

£1,136 or less
Air Canada
  • Air Canada
  • 12/11-29/11
  • 4 total stops
  • 67h 35m total
  • United Kingdom to Buenos Aires
Search Deals
1/9
  • 1/9
  • 3 total stops
  • 40h 05m total
  • United Kingdom to Buenos Aires
Search Deals
Highest demand for flights based on searches. 7% potential increase in price (£64 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£21 potential savings vs. average return price).
Search Deals
Average for round-trip flights in June 2026
Search Deals
Price to beat on a round-trip flight from United Kingdom to Buenos Aires (BUE).
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from United Kingdom 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, Cheapflights users made 858,174 searches. Data last updated 21 June 2026.
Use the filters below to find and compare flights from the United Kingdom to Buenos Aires that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

ManchesterBuenos Aires

MAN - EZE

MANEZE

Manchester

Tue 15/9

05:55-06:25

1 stop28h 30m

Buenos Aires Ministro Pistarini

Mon 28/9

16:35-22:30

1 stop25h 55m

£892
Fastest return journey

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Sat 5/9

21:45-10:45

1 stop17h 00m

Buenos Aires Ministro Pistarini

Sat 26/9

17:50-14:55

1 stop17h 05m

£899

LondonBuenos Aires

LGW - EZE

LGWEZE

London Gatwick

Sun 5/7

20:40-16:05

1 stop23h 25m

Buenos Aires Ministro Pistarini

Tue 21/7

13:00-10:50

1 stop17h 50m

£901

LondonBuenos Aires

LHR - AEP

LHRAEP

London Heathrow

Mon 16/11

18:30-02:00

2 stops34h 30m

Buenos Aires Jorge Newbery

Tue 8/12

13:35-21:35

2 stops29h 00m

£920

LondonBuenos Aires

LGW - AEP

LGWAEP

London Gatwick

Mon 16/11

16:35-02:00

2 stops36h 25m

Buenos Aires Jorge Newbery

Tue 8/12

13:35-09:50

2 stops41h 15m

£923

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Mon 16/11

09:40-09:40

2 stops27h 00m

Buenos Aires Ministro Pistarini

Tue 8/12

21:30-06:50

2 stops30h 20m

£937

LondonBuenos Aires

LTN - EZE

LTNEZE

London Luton

Wed 4/11

15:10-18:45

2 stops30h 35m

Buenos Aires Ministro Pistarini

Wed 18/11

09:25-13:30

2 stops25h 05m

£939

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Mon 17/8

22:05-15:40

1 stop21h 35m

Buenos Aires Ministro Pistarini

Mon 24/8

02:17-11:55

3 stops29h 38m

£945

LondonBuenos Aires

LCY - AEP

LCYAEP

London City

Thu 19/11

19:05-12:00

2 stops19h 55m

Buenos Aires Jorge Newbery

Wed 25/11

14:55-12:50

2 stops18h 55m

£950

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Sun 6/9

10:45-09:45

2 stops27h 00m

Buenos Aires Ministro Pistarini

Mon 14/9

20:10-06:20

2 stops30h 10m

£950

Flights are sorted by cheapest return flights first.

Deals found on 19/6

Showing 1-10 of 60 resultsSorted by cheapest first
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Best time to book a flight from United Kingdom to Buenos Aires

Have a flexible travel schedule? Discover the best time to fly to Buenos Aires from United Kingdom with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from the United Kingdom to Buenos Aires

What is the cheapest month to book a flight from United Kingdom to Buenos Aires?

Currently, July is the cheapest month in which you can book a flight from United Kingdom to Buenos Aires (average of £119). Flying from United Kingdom to Buenos Aires in October is currently the most expensive (average of £1,944). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from GB to BUE?

Find hourly flight availability from United Kingdom to Buenos Aires. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 21 June 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from United Kingdom to Buenos Aires as you normally would.

Weekly flight availability from United Kingdom to Buenos Aires

Explore weekly flight availability from United Kingdom to Buenos Aires. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 21 June 2026.

The most flights from GB0 to BUE are scheduled on a Monday (3 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (3 on average).

How far ahead should I book a flight from United Kingdom to Buenos Aires?

The best time to book flights from United Kingdom to Buenos Aires is 55 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

Reviews of airlines servicing Buenos Aires

Get insights into the airlines that provide service to Buenos Aires. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Buenos Aires. Reviews last updated 21 June 2026.
Check out reviews from past customers who have flown with LATAM Airlines,Iberia, andLufthansa from the United Kingdom to Buenos Aires to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
LATAM Airlines
7.4
Good
1,940 reviews
Check prices

Entertainment

7.0

Crew

8.0

Boarding

7.5

Overall

7.4

Comfort

7.3

Food

6.7

Reviews

1 / 20
2.0
Mediocre

JC,Jan 2026

FLN - GRU

Plane was late in FLN and missed connection in GRU. No alternative was given to me until 6 hours later and I was delayed by over 12 hours total.
LATAM Airlines
7.4
Good
1,940 reviews
LATAM Airlines
7.4
Good
1,940 reviews
Check prices

Entertainment

7.0

Crew

8.0

Boarding

7.5

Overall

7.4

Comfort

7.3

Food

6.7

Reviews

1 / 20
2.0
Mediocre

JC,Jan 2026

FLN - GRU

Plane was late in FLN and missed connection in GRU. No alternative was given to me until 6 hours later and I was delayed by over 12 hours total.
Iberia
7.0
Good
3,241 reviews
LATAM Airlines
7.4
Good
1,940 reviews
Check prices

Entertainment

7.0

Crew

8.0

Boarding

7.5

Overall

7.4

Comfort

7.3

Food

6.7

Reviews

1 / 20
2.0
Mediocre

JC,Jan 2026

FLN - GRU

Plane was late in FLN and missed connection in GRU. No alternative was given to me until 6 hours later and I was delayed by over 12 hours total.
Lufthansa
6.8
Okay
8,084 reviews
LATAM Airlines
7.4
Good
1,940 reviews
Check prices

Entertainment

7.0

Crew

8.0

Boarding

7.5

Overall

7.4

Comfort

7.3

Food

6.7

Reviews

1 / 20
2.0
Mediocre

JC,Jan 2026

FLN - GRU

Plane was late in FLN and missed connection in GRU. No alternative was given to me until 6 hours later and I was delayed by over 12 hours total.
British Airways
6.7
Okay
8,059 reviews
LATAM Airlines
7.4
Good
1,940 reviews
Check prices

Entertainment

7.0

Crew

8.0

Boarding

7.5

Overall

7.4

Comfort

7.3

Food

6.7

Reviews

1 / 20
2.0
Mediocre

JC,Jan 2026

FLN - GRU

Plane was late in FLN and missed connection in GRU. No alternative was given to me until 6 hours later and I was delayed by over 12 hours total.
Avianca
6.5
Okay
2,534 reviews
LATAM Airlines
7.4
Good
1,940 reviews
Check prices

Entertainment

7.0

Crew

8.0

Boarding

7.5

Overall

7.4

Comfort

7.3

Food

6.7

Reviews

1 / 20
2.0
Mediocre

JC,Jan 2026

FLN - GRU

Plane was late in FLN and missed connection in GRU. No alternative was given to me until 6 hours later and I was delayed by over 12 hours total.

Related info for your journey

Find useful and relevant information for your journey from United Kingdom to Buenos Aires. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from United Kingdom to Buenos Aires?

    Airlines like Lufthansa, British Airways, and TAP AIR PORTUGAL fly from United Kingdom to Buenos Aires in about 17h. The time it takes to get you to your destination can typically vary by up to 17h 30m. United Kingdom and Buenos Aires are separated by a distance of 6915 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • What are the cheapest airlines to fly from United Kingdom to Buenos Aires one-way?

    One-way options have recently been found by users for as low as £383 on Avianca. Other airlines that offer cheap prices include LATAM Airlines from £607 and Iberia from £687 one-way.

  • What are the most popular routes from United Kingdom to Buenos Aires?

    The most popular route from United Kingdom to Buenos Aires is London Heathrow - Buenos Aires Ministro Pistarini. You may also consider London Heathrow - Buenos Aires Jorge Newbery or London Gatwick - Buenos Aires Ministro Pistarini.

  • What are the cheapest flights from United Kingdom to Buenos Aires?

    Looking at all options, your cheapest flight can be booked for £1,027. While the most popular route (London Heathrow - Buenos Aires Ministro Pistarini) can be booked for £780 on average, our data indicates £1,380 when flying from United Kingdom to Buenos Aires.

  • Can I find deals for flights from United Kingdom to Buenos Aires that include hotel bookings?

    Yes. In addition to deals on United Kingdom to Buenos Aires flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from United Kingdom to Buenos Aires?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from United Kingdom to Buenos Aires.

  • Can I find deals for business class flights from United Kingdom to Buenos Aires?

    Yes. Cheapflights offers flight deals from United Kingdom to Buenos Aires by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from United Kingdom to Buenos Aires?

    Currently, July is the cheapest month in which you can book a flight from United Kingdom to Buenos Aires (average of £119). Flying from United Kingdom to Buenos Aires in October is currently the most expensive (average of £1,944). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 10 airlines flying from United Kingdom to Buenos Aires

Discover the top 10 airlines that operate flights from United Kingdom to Buenos Aires. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 21 June 2026.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest£675Average£1,330FlexibilityNo cancel feeOn-time75%
Search KLM flights
British AirwaysCheapest£691Average£951FlexibilityNo cancel feeOn-time70%
Search British Airways flights
AviancaCheapest£695Average£806FlexibilityNo cancel feeOn-time71%
Search Avianca flights
IberiaCheapest£702Average£1,028FlexibilityNo cancel feeOn-time77%
Search Iberia flights
Air FranceCheapest£708Average£1,239FlexibilityNo cancel feeOn-time77%
Search Air France flights
Turkish AirlinesCheapest£761Average£777FlexibilityNo cancel feeOn-time77%
Search Turkish Airlines flights
LufthansaCheapest£773Average£1,179FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
LATAM AirlinesCheapest£856Average£1,079FlexibilityNo cancel feeOn-time81%
Search LATAM Airlines flights
American AirlinesCheapest£879Average£896FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
Air EuropaCheapest£914Average£1,183FlexibilityNo cancel feeOn-time83%
Search Air Europa flights

Fly with Cheapflights

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How does Cheapflights help users find flights from United Kingdom to Buenos Aires?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Buenos Aires from United Kingdom today with Cheapflights!

Why should you use Cheapflights to find cheap flight tickets from United Kingdom to Buenos Aires?

Cheapflights simply makes it quick and affordable to book flights from United Kingdom to Buenos Aires by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from United Kingdom to Buenos Aires with no change fees?

Need flexible booking options for your flight to Buenos Aires from United Kingdom? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from United Kingdom to Buenos Aires become cheaper?

Yes! Start tracking prices for United Kingdom to Buenos Aires flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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