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Cheap flights from the United Kingdom to Buenos Aires from £382

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 26/5. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — BUE
9 Apr — 16 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 10 March 2026.

Tue 12/522:05
LHR
-
EZE
1 stop30h 20m
Avianca
Wed 10/607:10
EZE
-
LHR
1 stop28h 25m
Avianca
Deal found 9/3£745
Tue 12/518:40
LHR
-
EZE
2 stops20h 10m
Multiple Airlines
Mon 8/616:35
EZE
-
LHR
1 stop20h 05m
Multiple Airlines
Deal found 7/3£748
Wed 20/522:05
LHR
-
EZE
1 stop35h 35m
Avianca
Tue 2/616:50
EZE
-
LHR
1 stop18h 45m
Avianca
Deal found 9/3£748
Mon 4/522:05
LHR
-
EZE
1 stop21h 35m
Avianca
Wed 13/516:50
EZE
-
LHR
1 stop18h 45m
Avianca
Deal found 10/3£749
Mon 11/520:05
LHR
-
EZE
2 stops42h 45m
SWISS
Wed 10/613:30
EZE
-
LHR
2 stops24h 20m
SWISS
Deal found 7/3£751
Tue 12/506:15
LHR
-
EZE
1 stop19h 50m
Air France
Thu 11/623:55
EZE
-
LHR
1 stop17h 30m
Air France
Deal found 7/3£753
Thu 23/422:05
LHR
-
AEP
1 stop35h 35m
Avianca
Thu 7/507:00
AEP
-
LHR
1 stop28h 35m
Avianca
Deal found 7/3£754
Mon 11/517:30
LHR
-
EZE
1 stop16h 55m
Lufthansa
Mon 8/616:35
EZE
-
LHR
1 stop20h 05m
Lufthansa
Deal found 7/3£754
Mon 16/1117:05
LGW
-
EZE
2 stops56h 20m
Turkish Airlines
Tue 8/1223:55
EZE
-
LGW
1 stop37h 15m
Turkish Airlines
Deal found 6/3£755
Tue 12/518:40
LHR
-
EZE
2 stops20h 10m
SWISS
Wed 10/613:30
EZE
-
LHR
2 stops24h 20m
SWISS
Deal found 9/3£755
Tue 12/509:30
LHR
-
EZE
1 stop24h 55m
Multiple Airlines
Wed 10/613:30
EZE
-
LHR
2 stops24h 20m
Multiple Airlines
Deal found 9/3£757
Wed 13/517:30
LHR
-
EZE
1 stop16h 55m
Multiple Airlines
Wed 10/613:30
EZE
-
LHR
2 stops24h 20m
Multiple Airlines
Deal found 9/3£758

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 10 March 2026.

Round-trip from

£745

One-way from

£382

Popular in

December

Cheapest in

September

Average price

£900

Good round-trip deal

£1,022 or less
Avianca
  • Avianca
  • 12/5-10/6
  • 2 total stops
  • 58h 45m total
  • United Kingdom to Buenos Aires
Search Deals
26/5
  • 26/5
  • 3 total stops
  • 53h 30m total
  • United Kingdom to Buenos Aires
Search Deals
Highest demand for flights based on searches. 5% potential increase in price (£39 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 10 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

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Tue 9/6

11:30-06:25

1 stop22h 55m

Buenos Aires Ministro Pistarini

Tue 16/6

16:35-22:10

1 stop25h 35m

£808

LondonBuenos Aires

STN - EZE

STNEZE

London Stansted

Wed 10/6

17:45-22:25

2 stops32h 40m

Buenos Aires Ministro Pistarini

Wed 17/6

23:55-09:55

2 stops30h 00m

£826

LondonBuenos Aires

LGW - EZE

LGWEZE

London Gatwick

Wed 10/6

14:05-22:25

2 stops36h 20m

Buenos Aires Ministro Pistarini

Wed 17/6

23:55-09:55

2 stops30h 00m

£832

LondonBuenos Aires

LGW - EZE

LGWEZE

London Gatwick

Wed 10/6

14:05-22:25

2 stops36h 20m

Buenos Aires Ministro Pistarini

Sun 14/6

23:55-13:10

2 stops33h 15m

£842

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Mon 20/4

20:05-10:50

2 stops42h 45m

Buenos Aires Ministro Pistarini

Wed 6/5

13:30-17:50

2 stops24h 20m

£855

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Mon 20/4

07:25-08:00

2 stops28h 35m

Buenos Aires Ministro Pistarini

Mon 27/4

21:00-09:40

2 stops32h 40m

£866

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Mon 20/4

07:25-08:00

2 stops28h 35m

Buenos Aires Ministro Pistarini

Wed 6/5

21:00-06:45

2 stops29h 45m

£867

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Tue 21/4

07:25-08:00

2 stops28h 35m

Buenos Aires Ministro Pistarini

Wed 29/4

21:00-06:45

2 stops29h 45m

£867

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Thu 7/5

06:55-08:00

2 stops29h 05m

Buenos Aires Ministro Pistarini

Mon 11/5

21:00-09:40

2 stops32h 40m

£870

LondonBuenos Aires

LHR - EZE

LHREZE

London Heathrow

Tue 14/4

06:55-08:00

2 stops29h 05m

Buenos Aires Ministro Pistarini

Mon 27/4

21:00-06:55

2 stops29h 55m

£870

Flights are sorted by cheapest return flights first.

Deals found on 10/3

Showing 1-10 of 60 resultsSorted by cheapest first
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6

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 £657). Flying from United Kingdom to Buenos Aires in December is currently the most expensive (average of £880). 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 10 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 10 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 10 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
1,918 reviews
Check prices

Boarding

7.5

Comfort

7.3

Crew

8.0

Overall

7.4

Entertainment

7.0

Food

6.7

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
1,918 reviews
LATAM Airlines
7.4
Good
1,918 reviews
Check prices

Boarding

7.5

Comfort

7.3

Crew

8.0

Overall

7.4

Entertainment

7.0

Food

6.7

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
3,133 reviews
LATAM Airlines
7.4
Good
1,918 reviews
Check prices

Boarding

7.5

Comfort

7.3

Crew

8.0

Overall

7.4

Entertainment

7.0

Food

6.7

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
593 reviews
LATAM Airlines
7.4
Good
1,918 reviews
Check prices

Boarding

7.5

Comfort

7.3

Crew

8.0

Overall

7.4

Entertainment

7.0

Food

6.7

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
7,840 reviews
LATAM Airlines
7.4
Good
1,918 reviews
Check prices

Boarding

7.5

Comfort

7.3

Crew

8.0

Overall

7.4

Entertainment

7.0

Food

6.7

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
7,781 reviews
LATAM Airlines
7.4
Good
1,918 reviews
Check prices

Boarding

7.5

Comfort

7.3

Crew

8.0

Overall

7.4

Entertainment

7.0

Food

6.7

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 SWISS fly from United Kingdom to Buenos Aires in about 22h 55m. The time it takes to get you to your destination can typically vary by up to 19h 50m. 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 £376 on Avianca. Other airlines that offer cheap prices include Aeromexico from £565 and Iberia from £579 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 £1,022. While the most popular route (London Heathrow - Buenos Aires Ministro Pistarini) can be booked for £755 on average, our data indicates £1,092 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 £657). Flying from United Kingdom to Buenos Aires in December is currently the most expensive (average of £880). 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 10 March 2026.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest£669Average£1,413FlexibilityNo cancel feeOn-time75%
Search KLM flights
British AirwaysCheapest£685Average£1,024FlexibilityNo cancel feeOn-time70%
Search British Airways flights
IberiaCheapest£696Average£947FlexibilityNo cancel feeOn-time77%
Search Iberia flights
AviancaCheapest£698Average£800FlexibilityNo cancel feeOn-time71%
Search Avianca flights
Air FranceCheapest£702Average£1,193FlexibilityNo cancel feeOn-time77%
Search Air France flights
Turkish AirlinesCheapest£754Average£804FlexibilityNo cancel feeOn-time77%
Search Turkish Airlines flights
LufthansaCheapest£767Average£1,170FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
LATAM AirlinesCheapest£848Average£986FlexibilityNo cancel feeOn-time81%
Search LATAM Airlines flights
Air EuropaCheapest£855Average£1,179FlexibilityNo cancel feeOn-time83%
Search Air Europa flights
American AirlinesCheapest£872Average£900FlexibilityNo 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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