London to Buenos Aires LCY, LGW, LHR, LTN, STN → AEP, EZE
London City Airport (LCY), London Gatwick Airport (LGW), London Heathrow Airport (LHR), London Luton Airport (LTN), Stansted Airport (STN) → Jorge Newbery Airport (AEP), Ministro Pistarini Airport (EZE)
The cheapest return found recently is $1,223 with British Airways, 19 Mar 2027 – 4 Apr 2027, found yesterday.
Return
The cheapest return fare on each of 12 departure dates is usually $1,222 to $1,421.
Cheapest return found recently
$1,223
19 Mar 2027 – 4 Apr 2027 · British Airways
London Heathrow Airport (LHR) → Ministro Pistarini Airport (EZE)
Leaves 12:55 p.m. · Return leaves 9:10 p.m. · 54 h 5 min of travel, both ways together
out 1 stop, back 1 stop
found yesterday
Cheapest nonstop return
None seen yet.
Found recently, and the cheapest we hold
$1,223 19 Mar 2027 – 4 Apr 2027found yesterdaySee prices for these dates
$1,118 2 Jun 2027 – 6 Jun 2027found 5 days agoSee prices for these dates
What have prices looked like?
Over 25 days, 24 Sept to 18 Oct, the cheapest return we saw each day was $847 to $1,164.
At $1,223, the cheapest return found recently is above that range.
25 days is a short history, so treat this range as an early guide.
Those were the prices on those days, not today's.
Is this a good return price?
Compared with the cheapest return fare on each of 12 departure dates from 26 Nov to 2 Jun 2027, found by travelers' searches in the last 7 days (economy, the price the seller showed on Aviasales). The usual range is the middle half of those prices.
Could nearby dates be cheaper?
We hold no other 16-night return fares leaving within 3 days of 19 Mar 2027 to compare.
Every date we hold
39 fares on 12 departure dates
See the chart as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 26 Nov – 26 Dec | $1,411 | Iberia | London Heathrow Airport (LHR) → Ministro Pistarini Airport (EZE) | out 1 stop, back 1 stop | found 5 days ago | See prices for these dates |
| 2 Dec – 23 Dec | $1,783 | Wizz Air Malta | London Luton Airport (LTN) → Ministro Pistarini Airport (EZE) | out 1 stop, back 1 stop | found 4 days ago | See prices for these dates |
| 18 Jan 2027 – 24 Jan 2027 | $1,214 | Ryanair | Stansted Airport (STN) → Ministro Pistarini Airport (EZE) | out 1 stop, back 1 stop | found 4 days ago | See prices for these dates |
| 10 Feb 2027 – 19 Feb 2027 | $1,298 | American Airlines | London Heathrow Airport (LHR) → Ministro Pistarini Airport (EZE) | out 1 stop, back 1 stop | found 2 days ago | See prices for these dates |
| 11 Feb 2027 – 20 Feb 2027 | $1,479 | BA Cityflyer | London City Airport (LCY) → Ministro Pistarini Airport (EZE) | out 1 stop, back 1 stop | found 2 days ago | See prices for these dates |
| 14 Feb 2027 – 25 Feb 2027 | $1,298 | American Airlines | London Heathrow Airport (LHR) → Ministro Pistarini Airport (EZE) | out 1 stop, back 1 stop | found 2 days ago | See prices for these dates |
| 20 Feb 2027 – 24 Feb 2027 | $1,452 | Wizz Air Malta | London Luton Airport (LTN) → Ministro Pistarini Airport (EZE) | out 2 stops, back 2 stops | found 2 days ago | See prices for these dates |
| 19 Mar 2027 – 4 Apr 2027 | $1,223 | British Airways | London Heathrow Airport (LHR) → Ministro Pistarini Airport (EZE) | out 1 stop, back 1 stop | found yesterday | See prices for these dates |
| 24 Mar 2027 – 8 Apr 2027 | $1,217 | Iberia | London Gatwick Airport (LGW) → Ministro Pistarini Airport (EZE) | out 1 stop, back 1 stop | found 6 days ago | See prices for these dates |
| 29 Mar 2027 – 5 Apr 2027 | $1,275 | American Airlines | London Heathrow Airport (LHR) → Ministro Pistarini Airport (EZE) | out 1 stop, back 1 stop | found yesterday | See prices for these dates |
| 23 Apr 2027 – 24 May 2027 | $1,404 | Wizz Air Malta | London Luton Airport (LTN) → Ministro Pistarini Airport (EZE) | out 1 stop, back 1 stop | found yesterday | See prices for these dates |
| 2 Jun 2027 – 6 Jun 2027 | $1,118 | Iberia | London Heathrow Airport (LHR) → Ministro Pistarini Airport (EZE) | out 1 stop, back 1 stop | found 5 days ago | See prices for these dates |
Which month looks cheapest?
June 2027 is the cheapest month — from $1,118.
Airlines on the cheapest dates: Iberia, Wizz Air Malta, American Airlines, Ryanair, BA Cityflyer, British Airways.
Premium cabin fares from London to Buenos Aires
We hold no premium economy, business or first-class fares for this route: we collect them for the busiest routes, and this one is not among them yet.
Today's prices for 19 Mar 2027 – 4 Apr 2027 in another cabin: Premium economy · Business · First
How far ahead were prices cheapest for London to Buenos Aires?
Return
Fares 180 or more days before departure were typically 30% lower than 14 to 29 days before departure.
From the cheapest return each day between 24 Sept and 18 Oct (25 days), grouped by how many days ahead the flight left; one adult in economy.
Each range covers different departure dates, so this compares typical fares, not the same trip priced twice.
Prices reflect recent searches — current fares may differ.
See these ranges as a table
| Booked ahead by | Typical fare | Cheapest day | Above the cheapest | Days of prices |
|---|---|---|---|---|
| 14–29 days | $1,534 | $1,281 | +43% | 10 |
| 30–59 days | $1,342 | $1,133 | +25% | 14 |
| 60–89 days | $1,673 | $1,048 | +56% | 25 |
| 90–179 days | $1,184 | $1,048 | +10% | 24 |
| 180+ days | $1,074 | $847 | Cheapest seen | 18 |
Could a nearby airport be cheaper?
A different airport at either end can change the fare — sometimes a lot.
Return
Southampton → Buenos Aires
111 km from London
$1,500
$277 more than flying from London
19 Mar 2027 – 4 Apr 2027 · SOU → EZE · out 2 stops, back 2 stops
found yesterday
Cheapest recent price on each route — round trip, per traveler in Economy. Distances are in a straight line.
Live price for these dates
The cheapest return found recently is for 19 Mar 2027 – 4 Apr 2027. A live search on this page shows what those dates cost now, for one adult in economy.
Prices are what travelers' searches on Aviasales found in the last 7 days, in US dollars: the price the seller showed on Aviasales; bags may cost extra. Fares change, so check today's price before you book. How our prices work