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Cheap flights from the United Kingdom to Buenos Aires from £304

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 20/4. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — BUE
22 Apr — 29 Apr1
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 23 March 2026.

Sat 12/922:05
LHR
-
EZE
1 stop21h 35m
Avianca
Mon 28/916:50
EZE
-
LHR
1 stop18h 45m
Avianca
Deal found 20/3£740
Fri 9/1022:05
LHR
-
EZE
1 stop21h 35m
Avianca
Fri 30/1016:55
EZE
-
LHR
1 stop18h 40m
Avianca
Deal found 20/3£741
Wed 6/522:05
LHR
-
EZE
1 stop21h 35m
Avianca
Thu 14/516:50
EZE
-
LHR
1 stop18h 45m
Avianca
Deal found 18/3£743
Mon 11/522:05
LHR
-
EZE
1 stop35h 35m
Avianca
Wed 27/516:50
EZE
-
LHR
1 stop18h 45m
Avianca
Deal found 22/3£746
Thu 23/422:05
LHR
-
AEP
1 stop35h 35m
Avianca
Thu 14/507:00
AEP
-
LHR
1 stop28h 35m
Avianca
Deal found 18/3£749
Sun 8/1121:40
LHR
-
EZE
1 stop21h 10m
Avianca
Sat 28/1107:30
EZE
-
LHR
1 stop28h 05m
Avianca
Deal found 19/3£751
Mon 5/1022:05
LHR
-
EZE
1 stop21h 35m
Avianca
Wed 14/1016:50
EZE
-
LHR
1 stop18h 45m
Avianca
Deal found 18/3£752
Sun 13/922:05
LHR
-
EZE
1 stop30h 20m
Avianca
Mon 21/916:50
EZE
-
LHR
1 stop18h 45m
Avianca
Deal found 18/3£754
Mon 18/522:05
LHR
-
AEP
1 stop35h 35m
Avianca
Wed 27/507:00
AEP
-
LHR
1 stop28h 35m
Avianca
Deal found 22/3£755
Sun 24/522:05
LHR
-
EZE
1 stop21h 35m
Avianca
Mon 22/616:50
EZE
-
LHR
1 stop18h 45m
Avianca
Deal found 22/3£755
Mon 4/522:05
LHR
-
AEP
1 stop35h 35m
Avianca
Mon 11/507:00
AEP
-
LHR
1 stop28h 35m
Avianca
Deal found 22/3£756
Sat 16/522:05
LHR
-
AEP
1 stop35h 35m
Avianca
Mon 22/607:00
AEP
-
LHR
1 stop28h 35m
Avianca
Deal found 21/3£756

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 23 March 2026.

Round-trip from

£740

One-way from

£304

Popular in

December

Cheapest in

September

Average price

£904

Good round-trip deal

£1,083 or less
Avianca
  • Avianca
  • 12/9-28/9
  • 2 total stops
  • 40h 20m total
  • United Kingdom to Buenos Aires
Search Deals
20/4
  • 20/4
  • 2 total stops
  • 35h 40m total
  • United Kingdom to Buenos Aires
Search Deals
Highest demand for flights based on searches. 4% potential increase in price (£37 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£20 potential savings vs. average return price).
Search Deals
Average for round-trip flights in March 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 23 March 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
Fastest return journey

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Tue 19/5

17:30-06:25

1 stop16h 55m

Buenos Aires Ministro Pistarini

Fri 19/6

16:35-14:40

1 stop18h 05m

£810

LondonBuenos Aires

STN - EZE

STNEZE

London Stansted

Wed 16/9

17:45-22:25

2 stops32h 40m

Buenos Aires Ministro Pistarini

Thu 15/10

23:55-09:55

2 stops30h 00m

£843

LondonBuenos Aires

STN - EZE

STNEZE

London Stansted

Wed 1/7

17:45-22:25

2 stops32h 40m

Buenos Aires Ministro Pistarini

Sat 1/8

23:55-22:10

2 stops42h 15m

£860

Newcastle upon TyneBuenos Aires

NCL - EZE

NCLEZE

Newcastle upon Tyne

Sun 3/5

06:05-15:40

2 stops37h 35m

Buenos Aires Ministro Pistarini

Sun 10/5

16:50-21:55

2 stops25h 05m

£881

LondonBuenos Aires

LTN - EZE

LTNEZE

London Luton

Mon 18/5

08:00-04:10

1 stop24h 10m

Buenos Aires Ministro Pistarini

Thu 18/6

15:05-13:45

1 stop18h 40m

£918

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Mon 18/5

16:30-07:30

1 stop19h 00m

Buenos Aires Ministro Pistarini

Tue 16/6

12:55-09:40

1 stop16h 45m

£920

LondonBuenos Aires

LGW - EZE

LGWEZE

London Gatwick

Mon 18/5

14:05-22:25

2 stops36h 20m

Buenos Aires Ministro Pistarini

Tue 16/6

23:55-13:10

2 stops33h 15m

£932

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Mon 14/9

09:40-09:45

2 stops28h 05m

Buenos Aires Ministro Pistarini

Mon 21/9

20:10-10:20

2 stops34h 10m

£937

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Sun 13/9

11:45-09:45

2 stops26h 00m

Buenos Aires Ministro Pistarini

Mon 21/9

20:10-06:25

1 stop30h 15m

£937

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Wed 6/5

09:40-09:45

2 stops28h 05m

Buenos Aires Ministro Pistarini

Wed 13/5

20:10-10:20

2 stops34h 10m

£938

Flights are sorted by cheapest return flights first.

Deals found on 23/3

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, May is the cheapest month in which you can book a flight from United Kingdom to Buenos Aires (average of £658). Flying from United Kingdom to Buenos Aires in December is currently the most expensive (average of £882). 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 23 March 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 23 March 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 often are flights from the United Kingdom to Buenos Aires delayed?

About 0% of weekly flights between United Kingdom and Buenos Aires have experienced delays in the past year, with the average delay time being 0 minutes.

What is the most punctual flight time for the United Kingdom to Buenos Aires flights?

Historically, flights departing in the evening are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Sunday tends to have the lowest number of delays on this route, whereas Sunday has historically faced a higher average of delays compared to other days of the week.

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 23 March 2026.
Check out reviews from past customers who have flown with LATAM Airlines,Iberia, andAir Europa 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
1,917 reviews
Check prices

Food

6.7

Boarding

7.5

Overall

7.4

Crew

8.0

Entertainment

7.0

Comfort

7.3

Reviews

1 / 20
8.0
Excellent

LUIS JOSE,Oct 2025

LIM - AEP

Smiles because se upgraded to premiums economy. That was similar to LAN economy years ahí!
LATAM Airlines
7.4
Good
1,917 reviews
LATAM Airlines
7.4
Good
1,917 reviews
Check prices

Food

6.7

Boarding

7.5

Overall

7.4

Crew

8.0

Entertainment

7.0

Comfort

7.3

Reviews

1 / 20
8.0
Excellent

LUIS JOSE,Oct 2025

LIM - AEP

Smiles because se upgraded to premiums economy. That was similar to LAN economy years ahí!
Iberia
7.0
Good
3,147 reviews
LATAM Airlines
7.4
Good
1,917 reviews
Check prices

Food

6.7

Boarding

7.5

Overall

7.4

Crew

8.0

Entertainment

7.0

Comfort

7.3

Reviews

1 / 20
8.0
Excellent

LUIS JOSE,Oct 2025

LIM - AEP

Smiles because se upgraded to premiums economy. That was similar to LAN economy years ahí!
Air Europa
6.9
Okay
596 reviews
LATAM Airlines
7.4
Good
1,917 reviews
Check prices

Food

6.7

Boarding

7.5

Overall

7.4

Crew

8.0

Entertainment

7.0

Comfort

7.3

Reviews

1 / 20
8.0
Excellent

LUIS JOSE,Oct 2025

LIM - AEP

Smiles because se upgraded to premiums economy. That was similar to LAN economy years ahí!
Lufthansa
6.8
Okay
7,862 reviews
LATAM Airlines
7.4
Good
1,917 reviews
Check prices

Food

6.7

Boarding

7.5

Overall

7.4

Crew

8.0

Entertainment

7.0

Comfort

7.3

Reviews

1 / 20
8.0
Excellent

LUIS JOSE,Oct 2025

LIM - AEP

Smiles because se upgraded to premiums economy. That was similar to LAN economy years ahí!
British Airways
6.7
Okay
7,811 reviews
LATAM Airlines
7.4
Good
1,917 reviews
Check prices

Food

6.7

Boarding

7.5

Overall

7.4

Crew

8.0

Entertainment

7.0

Comfort

7.3

Reviews

1 / 20
8.0
Excellent

LUIS JOSE,Oct 2025

LIM - AEP

Smiles because se upgraded to premiums economy. That was similar to LAN economy years ahí!

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, Turkish Airlines, and ITA Airways fly from United Kingdom to Buenos Aires in about 16h 55m. The time it takes to get you to your destination can typically vary by up to 15h 45m. 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 £377 on Avianca. Other airlines that offer cheap prices include Aeromexico from £565 and Iberia from £580 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 £957. While the most popular route (London Heathrow - Buenos Aires Ministro Pistarini) can be booked for £798 on average, our data indicates £1,152 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, May is the cheapest month in which you can book a flight from United Kingdom to Buenos Aires (average of £658). Flying from United Kingdom to Buenos Aires in December is currently the most expensive (average of £882). 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 23 March 2026.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest£670Average£1,415FlexibilityNo cancel feeOn-time75%
Search KLM flights
British AirwaysCheapest£686Average£1,006FlexibilityNo cancel feeOn-time70%
Search British Airways flights
IberiaCheapest£697Average£949FlexibilityNo cancel feeOn-time77%
Search Iberia flights
AviancaCheapest£699Average£801FlexibilityNo cancel feeOn-time71%
Search Avianca flights
Air FranceCheapest£703Average£1,220FlexibilityNo cancel feeOn-time77%
Search Air France flights
Turkish AirlinesCheapest£755Average£805FlexibilityNo cancel feeOn-time77%
Search Turkish Airlines flights
LufthansaCheapest£768Average£1,171FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
LATAM AirlinesCheapest£850Average£1,014FlexibilityNo cancel feeOn-time81%
Search LATAM Airlines flights
Air EuropaCheapest£856Average£1,180FlexibilityNo cancel feeOn-time83%
Search Air Europa flights
American AirlinesCheapest£873Average£902FlexibilityNo cancel feeOn-time71%
Search American Airlines flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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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