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Cheap flights from Sydney to Buenos Aires

One-way from $853, found by travellers in the last 7 days. The live price is checked when you book.

Departure
Return
Prices for nearby dates
Fri, Feb 26Any priceSat, Feb 27Any priceSun, Feb 28Any priceMon, Mar 1$853Tue, Mar 2Any priceWed, Mar 3Any priceThu, Mar 4Any priceFri, Mar 5Any price

Cheapest one-way tickets

Recent finds on different dates, for 1 adult. Booking opens on Aviasales, which shows baggage, fare rules and the live price.

Cheapest
$853
Cathay Pacific, flight CX 100Found 7 days ago, 1 adult
Check live price
3:15pmSydneyMon, Mar 1
Travel time 35h 20m, 2 stopsSYDEZE
12:35pmBuenos AiresTue, Mar 2
$864
Cathay Pacific, flight CX 110Found today, 1 adult
Check live price
8:45amSydneySun, Mar 21
Travel time 35h 30m, 2 stopsSYDEZE
6:15amBuenos AiresMon, Mar 22
$865
Cathay Pacific, flight CX 110Found 4 days ago, 1 adult
Check live price
8:45amSydneyMon, Jan 25
Travel time 35h 30m, 2 stopsSYDEZE
6:15amBuenos AiresTue, Jan 26
$865
Cathay Pacific, flight CX 100Found 4 days ago, 1 adult
Check live price
3:15pmSydneyWed, Jan 27
Travel time 35h 30m, 2 stopsSYDEZE
12:45pmBuenos AiresThu, Jan 28
$888
Cathay Pacific, flight CX 110Found 4 days ago, 1 adult
Check live price
8:45amSydneySat, Jan 30
Travel time 35h 30m, 2 stopsSYDEZE
6:15amBuenos AiresSun, Jan 31

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 $70 per person.
    See ideas
  • Travel insuranceTravel insurance quotes for Argentina from EKTA; check what each policy covers.
    Get a quote
  • Flight delayed?Delayed or cancelled? See which passenger rights cover this route.
    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

MoTuWeThFrSaSu12345678910111213141516171819202122232425–26–27–28–29–30–31–

November 2026

MoTuWeThFrSaSu1–2–3–4–5–6–7–8$1,1789–10–11$90012–13–14–15–16–17–18–19–20–21–22–23–24–25–26–27–28–29–30–

December 2026

MoTuWeThFrSaSu1$1,0242–3–4–5–6–7–8–9–10–11$1,35212$1,38513–14–15–16–17–18–19$1,99420–21–22–23–2425262728293031
$888 or lessGreen: the cheapest fifth of fares on this route. Lowest in these 60 days: Nov 11, $900.

Lowest fares by month

In the fares found this week, March 2027 has the lowest: from $853 one-way, against $1,074 in February 2027. Pick a month to see its cheapest date.

  1. Octno fares yet
  2. Nov$900
  3. Dec$1,024
  4. Jan$865
  5. Feb$1,074
  6. Mar$853
  7. Apr$975
  8. Mayno fares yet
  9. Junno fares yet
  10. Julno fares yet
  11. Augno fares yet
  12. Sepno fares yet
$0$500$1,000$1,500OctNovDecJanFeb$853MarAprMayJunJulAugSep
Show as a table
MonthCheapest one-wayDateStops
October—
November$900Wed, Nov 112 stops
December$1,024Tue, Dec 13 stops
January 2027$865Mon, Jan 252 stops
February 2027$1,074Sat, Feb 202 stops
March 2027$853Mon, Mar 12 stops
April 2027$975Fri, Apr 162 stops
May 2027—
June 2027—
July 2027—
August 2027—
September 2027—

Fares and weather by month

The lowest one-way fare found for each month, next to the weather in Buenos Aires. Average daily high and low and monthly precipitation, 1991–2020 normals.

Oct2026NovDecJan2027FebMarAprMayJunJulAugSep
Lowest fare–$900$1,024$865$1,074$853$975–––––
High °C23°26°29°30°29°27°23°19°16°16°18°20°
Low °C13°16°19°20°19°18°14°11°8°8°9°11°
Precipitation mm1231181231341291201309462747081

Source: Buenos Aires on Wikipedia, CC BY-SA 4.0.

Questions travellers ask

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

In the fares found this week, March 2027 has the lowest: from $853 one-way, against $1,074 in February 2027.

What is the weather in Buenos Aires in March 2027?

In March 2027, the cheapest month to fly, the average daily high in Buenos Aires is 27 °C and the low 18 °C.

Are there direct flights from Sydney 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, Monday departures are the cheapest, with a typical lowest fare of $865. Friday is the priciest at about $1,107.

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