Cheap flights from London to Buenos Aires from $584 LCY, LGW, LHR, LTN, SEN, STN → AEP, EZE

Found recently, and the cheapest we hold

What have prices looked like?

Over 50 days, 24 Sept to 12 Nov, the cheapest return we saw each day was $847 to $1,223.

At $1,227, the cheapest return found recently is above that range.

Those were the prices on those days, not today's.

Could nearby dates be cheaper?

We hold no other 17-night return fares leaving within 3 days of 10 Feb 2027 to compare.

Every date we hold

490 fares on 19 departure dates

Which month looks cheapest?

February 2027 is the cheapest month — from $1,118.

Found recently, and the cheapest we hold

It is also the cheapest one-way we hold, of any age.

What have prices looked like?

Over 8 days, 28 Sept to 12 Nov, the cheapest one-way we saw each day was $459 to $779.

8 days is a short history, so treat this range as an early guide.

Those were the prices on those days, not today's.

Could nearby dates be cheaper?

We hold no other one-way fares leaving within 3 days of 22 Feb 2027 to compare.

Every date we hold

41 fares on 3 departure dates

Which month looks cheapest?

February 2027 is the cheapest month — from $584.

Return

Fares 90 to 179 days before departure were typically 12% lower than 0 to 6 days before departure.

From the cheapest return each day between 24 Sept and 12 Nov (50 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.

One-way

Not enough history yet: in 8 days of one-way prices, 28 Sept to 12 Nov, fewer than 3 booking ranges had prices on 7 days or more.

How much is a return flight from London to Buenos Aires?

The cheapest return found recently is $1,227 with avianca airlines, 10 Feb 2027 to 27 Feb 2027, found 8 hours ago. The cheapest return we hold, of any age, is $1,118 with Wizz Air Malta, 20 Feb 2027 to 8 Mar 2027, found 4 days ago. The cheapest return fare on each of 19 departure dates is usually $1,203 to $1,478.

How much is a one-way flight from London to Buenos Aires?

The cheapest one-way found recently is $584 with avianca airlines, 22 Feb 2027, found 2 days ago. The cheapest one-way fare on each of 3 departure dates is usually $682 to $779.

What is the cheapest month to fly from London to Buenos Aires?

February 2027 is the cheapest month for a return, from $1,118, 20 Feb 2027 to 8 Mar 2027, found 4 days ago. It is the cheapest month for a one-way too, from $584, 22 Feb 2027, found 2 days ago.

Every date in February 2027

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

In 50 days of prices between 24 Sept and 12 Nov, return fares 90 to 179 days before departure were typically 12% lower than 0 to 6 days before departure.

Is there a direct flight from London to Buenos Aires?

Yes, the cheapest nonstop return found recently is $2,157 with British Airways, 10 Feb 2027 to 28 Feb 2027, found 8 hours ago. The cheapest nonstop one-way found recently is $1,475 with British Airways, 22 Feb 2027, found 2 days ago.

Every nonstop date from London to Buenos Aires

How long is the flight from London to Buenos Aires?

The cheapest nonstop one-way found recently, with British Airways on 22 Feb 2027, takes 16 h 45 min from London Heathrow Airport (LHR) to Ministro Pistarini Airport (EZE). The cheapest one-way found recently, with avianca airlines on 22 Feb 2027, takes 33 h 35 min with 3 stops, including a 8 h connection.

Which airlines have the cheapest flights from London to Buenos Aires?

Between 17 Nov and 4 Oct 2027, avianca airlines has the cheapest return on 6 of the 19 departure dates we hold, Wizz Air Malta on 4 and British Airways on 2. Between 22 Feb 2027 and 14 Oct 2027, avianca airlines has the cheapest one-way on all 3 departure dates we hold.