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Cheap flights from Portsmouth to Buenos Aires from £1,085

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 13/11. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — BUE
16 11월 — 23 11월1
1 adult
1 adult, Economy

Cheap flight deals from Portsmouth to Buenos Aires

Keep the following information in mind while searching for Portsmouth to Buenos Aires flight deals. Data was last updated 17 10월 2025.

Round-trip from

£1,085

Popular in

December

Cheapest in

September

Average price

£948
Delta
  • Delta
  • 13/11-17/11
  • 4 total stops
  • 72h 40m total
  • Portsmouth to Buenos Aires
Search Deals
Highest demand for flights based on searches. 5% potential increase in price (£40 potential increase over avg. return price).
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Cheapest flight prices on average. 3% potential price decrease (£21 potential savings vs. average return price).
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Average for round-trip flights in October 2025
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Find flight deals from Portsmouth to Buenos Aires

Enter your travel dates to find the best prices.

Cheapest flights from Portsmouth to Buenos Aires
Explore the most affordable flight options available from Portsmouth to Buenos Aires. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 17 10월 2025.

목 13/1118:05SOU - EZE
2 stops41h 55mDelta
월 17/1122:25EZE - SOU
2 stops30h 45mDelta
Deal found 14/10£1,085
목 13/1118:05SOU - EZE
2 stops29h 15mKLM
월 17/1116:25EZE - SOU
1 stop36h 45mKLM
Deal found 15/10£1,430

Cheapflights Fare Finder

 
Customise your flight search to find flights from Portsmouth 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 17 10월 2025.
Use the filters below to find and compare flights from Portsmouth to Buenos Aires that are best for you.

Fly from

Portsmouth

Fly to

Buenos Aires

Route

Depart

Return

Price

SouthamptonBuenos Aires

SOU - EZE

SOUEZE

Southampton Eastleigh

목 13/11

18:05-09:00

2 stops41h 55m

Buenos Aires Ministro Pistarini

월 17/11

22:25-08:10

2 stops30h 45m

£1,085

SouthamptonBuenos Aires

SOU - EZE

SOUEZE

Southampton Eastleigh

목 13/11

18:05-20:20

2 stops29h 15m

Buenos Aires Ministro Pistarini

월 17/11

16:25-08:10

1 stop36h 45m

£1,430

Flights are sorted by cheapest return flights first.

Deals found on 14/10

Best time to book a flight from Portsmouth to Buenos Aires

Have a flexible travel schedule? Discover the best time to fly to Buenos Aires from Portsmouth 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 Portsmouth to Buenos Aires

What is the cheapest month to book a flight from Portsmouth to Buenos Aires?

Currently, March is the cheapest month in which you can book a flight from Portsmouth to Buenos Aires (average of £568). Flying from Portsmouth to Buenos Aires in July is currently the most expensive (average of £889). 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 P0R to BUE?

Find hourly flight availability from Portsmouth 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 17 10월 2025.

When flying from Portsmouth to Buenos Aires, the time of day you fly usually plays a role in the price. Save by searching for a flight in the morning, which can drop the price by up to 14% versus a flight in the evening.

What is the cheapest day to fly from Portsmouth to Buenos Aires?

Use this chart to determine the cheapest time to fly return from Portsmouth to Buenos Aires. Price data was last updated on 16 December 2024.

Travellers seeking maximum savings on their Portsmouth to Buenos Aires flight should consider departing on Friday afternoons when fares are most often at their lowest. Friday at midday flights should be avoided if possible as fares are typically the most expensive at this time.

Related info for your journey

Find useful and relevant information for your journey from Portsmouth 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 Portsmouth to Buenos Aires?

    Airlines like Delta and KLM fly from Portsmouth to Buenos Aires in about 29h 15m. The time it takes to get you to your destination can typically vary by up to 12h 40m. There are 6862 mi between Portsmouth and Buenos Aires. Both multi-stop and direct flights can be found to your destination and back.

  • What are the cheapest flights from Portsmouth to Buenos Aires?

    While on average a flight from Portsmouth to Buenos Aires is generally £1,977, our data shows the cheapest flight currently is £931. When looking at the most popular route, (Southampton Eastleigh - Buenos Aires Ministro Pistarini), you can expect to pay £1,095 for that flight.

  • Can I find deals for flights from Portsmouth to Buenos Aires that include hotel bookings?

    Yes. In addition to deals on Portsmouth to Buenos Aires flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Portsmouth to Buenos Aires?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Portsmouth to Buenos Aires.

  • Can I find deals for business class flights from Portsmouth to Buenos Aires?

    Yes. Cheapflights offers flight deals from Portsmouth 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 Portsmouth to Buenos Aires?

    Currently, March is the cheapest month in which you can book a flight from Portsmouth to Buenos Aires (average of £568). Flying from Portsmouth to Buenos Aires in July is currently the most expensive (average of £889). 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.

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Alternative routes for Portsmouth to Buenos Aires

See prices for flight routes from nearby airports that may be better suited for you.
Heathrow to Ministro Pistarini flights
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Stansted to Mendoza flights
Newcastle upon Tyne to Ministro Pistarini flights
Leeds to Ministro Pistarini flights
Gatwick to Rosario flights
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Heathrow to Salta flights
Manchester to Rosario flights

Top 10 airlines flying from Portsmouth to Buenos Aires

Discover the top 10 airlines that operate flights from Portsmouth 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 17 10월 2025.
AirlineCheapestAverageFlexibilityOn-time
Air FranceCheapest£446Average£1,131FlexibilityNo cancel feeOn-time77%
Search Air France flights
Air EuropaCheapest£583Average£1,006FlexibilityNo cancel feeOn-time83%
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ITA AirwaysCheapest£618Average£1,087FlexibilityNo cancel feeOn-time81%
Search ITA Airways flights
AviancaCheapest£707Average£725FlexibilityNo cancel feeOn-time71%
Search Avianca flights
IberiaCheapest£712Average£1,044FlexibilityNo cancel feeOn-time77%
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FinnairCheapest£736Average£1,080FlexibilityNo cancel feeOn-time76%
Search Finnair flights
British AirwaysCheapest£798Average£1,076FlexibilityNo cancel feeOn-time70%
Search British Airways flights
LufthansaCheapest£821Average£1,210FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
LATAM AirlinesCheapest£871Average£1,022FlexibilityNo cancel feeOn-time81%
Search LATAM Airlines flights
American AirlinesCheapest£876Average£1,158FlexibilityNo cancel feeOn-time71%
Search American Airlines flights

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How does Cheapflights help users find flights from Portsmouth to Buenos Aires?

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Why should you use Cheapflights to find cheap flight tickets from Portsmouth to Buenos Aires?

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Can Cheapflights find flights from Portsmouth to Buenos Aires with no change fees?

Need flexible booking options for your flight to Buenos Aires from Portsmouth? 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 Portsmouth to Buenos Aires become cheaper?

Of course! You can now track prices for flights from Portsmouth to Buenos Aires and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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