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Cheap flights from London to Buenos Aires

One-way from £361, found by travellers in the last 7 days. Aviasales checks the live price.

Departure
Return
Prices for nearby dates
Fri, Feb 19Any priceSat, Feb 20£488Sun, Feb 21£421Mon, Feb 22£361Tue, Feb 23Any priceWed, Feb 24Any priceThu, Feb 25Any priceFri, Feb 26Any price

Cheapest one-way tickets

Recent finds on different dates, for 1 adult. Baggage and fare rules are shown on Aviasales, where the price is checked live.

Cheapest
£361
Iberia, flight IB 726Found 4 days ago, 1 adult
Check price on Aviasales
19:40LondonMon, Feb 22
Travel time 15h 5m, 1 stopLHREZE
07:45Buenos AiresTue, Feb 23
£371
Wizz Air UK, flight W9 5371Found 4 days ago, 1 adult
Check price on Aviasales
08:00LondonWed, Jun 2
Travel time 15h 15m, 1 stopLTNEZE
19:15Buenos AiresWed, Jun 2
£373
Iberia, flight IB 726Found 6 days ago, 1 adult
Check price on Aviasales
20:00LondonSat, Apr 3
Travel time 15h, 1 stopLHREZE
07:00Buenos AiresSun, Apr 4
£376
Wizz Air Malta, flight W4 5373Found 7 days ago, 1 adult
Check price on Aviasales
21:30LondonThu, Mar 25
Travel time 15h 15m, 1 stopLTNEZE
09:45Buenos AiresFri, Mar 26
£403
Wizz Air UK, flight W9 5371Found 7 days ago, 1 adult
Check price on Aviasales
07:45LondonFri, Mar 26
Travel time 15h 15m, 1 stopLTNEZE
20:00Buenos AiresFri, Mar 26

Round trips

The cheapest return tickets found recently, price for the whole trip.

Plan the rest of the trip

  • Mobile data in ArgentinaTravel eSIM from $5, installed before you fly.
    Compare plans
  • Getting from the airportTransfers and car hire in Buenos Aires, booked ahead at a fixed price.
    See options
  • Things to do in Buenos AiresPopular tours from $63 per person.
    See ideas
  • Travel insuranceTravel insurance quotes for Argentina from EKTA; check what each policy covers.
    Get a quote
  • Flight delayed?Arrived 3+ hours late, cancelled at short notice or bumped? Up to £520 per person under UK261.
    Check

Price calendar

The lowest one-way fare found for each day over the next 60 days. A dash means no recent fare; you can still pick that day.

October 2026

MoTuWeThFrSaSu1234£7965–6£5547£6068£6139–10£61511–12£58513£61514£60215£58416£79417£75518£77119£65120–21£61622£65423–24–25–26–27–28–29£67830–31–

November 2026

MoTuWeThFrSaSu1–2–3–4–5–6–7–8–9£62410–11£46212–13£47714£44215–16–17–18–19–20–21–22–23–24–25–26–27–28–29–30–

December 2026

MoTuWeThFrSaSu1–2–345678910111213141516171819202122232425262728293031
£442 or lessGreen: the cheapest fifth of fares on this route. Lowest in these 60 days: Nov 14, £442.

Lowest fares by month

In the fares found this week, February 2027 has the lowest: from £361 one-way, against £579 in January 2027. Pick a month to see its cheapest date.

£0£200£400£600OctNovDecJan£361FebMarAprMayJunJulAugSep
Show as a table
MonthCheapest one-wayDateStops
October£554Tue, Oct 63 stops
November£442Sat, Nov 143 stops
December—
January 2027£579Wed, Jan 61 stop
February 2027£361Mon, Feb 221 stop
March 2027£376Thu, Mar 251 stop
April 2027£373Sat, Apr 31 stop
May 2027—
June 2027£371Wed, Jun 21 stop
July 2027—
August 2027—
September 2027—

Questions travellers ask

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

In the fares found this week, February 2027 has the lowest: from £361 one-way, against £579 in January 2027.

Are there direct flights from London to Buenos Aires?

None of the fares found recently are nonstop. The cheapest options have at least one stop.

Which day of the week is cheapest to fly?

In the fares we have, Friday departures are the cheapest, with a typical lowest fare of £477. Sunday is the priciest at about £771.

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