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Cheap flights from Portsmouth to Buenos Aires from £2,385

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/7. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — BUE
2 Jun — 9 Jun1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Portsmouth to Buenos Aires

Enter your travel dates to find the best prices.

One-way flights from Portsmouth to Buenos Aires
Search for one-way flight options from Portsmouth to Buenos Aires. Find affordable one-way fares based on user searches. Data last updated 3 May 2026.

Thu 2/709:05
SOU
-
EZE
2 stops52h 40m
Delta
Deal found 30/4£2,385

Find 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 3 May 2026.

Popular in

December

Cheapest in

September

Average price

£879
Highest demand for flights based on searches. 6% potential increase in price (£49 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£21 potential savings vs. average return price).
Search Deals
Average for round-trip flights in May 2026
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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 3 May 2026.
Use the filters below to find and compare flights from Portsmouth to Buenos Aires that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest one-way

SouthamptonBuenos Aires

SOU - EZE

SOUEZE

Southampton Eastleigh

Tue 7/7

09:15-09:45

2 stops52h 30m

£2,385

SouthamptonBuenos Aires

SOU - EZE

SOUEZE

Southampton Eastleigh

Wed 15/7

09:15-09:45

2 stops52h 30m

£2,385

SouthamptonBuenos Aires

SOU - EZE

SOUEZE

Southampton Eastleigh

Sat 11/7

09:15-09:45

2 stops52h 30m

£2,385

SouthamptonBuenos Aires

SOU - EZE

SOUEZE

Southampton Eastleigh

Fri 10/7

18:05-09:45

2 stops43h 40m

£2,385
Fastest single journey

SouthamptonBuenos Aires

SOU - EZE

SOUEZE

Southampton Eastleigh

Sun 5/7

09:15-09:45

2 stops28h 30m

£2,385

SouthamptonBuenos Aires

SOU - EZE

SOUEZE

Southampton Eastleigh

Sun 12/7

17:30-09:45

2 stops44h 15m

£2,385

Flights are sorted by cheapest return flights first.

Deals found on 30/4

Sorted by cheapest first

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 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 3 May 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Portsmouth to Buenos Aires as you normally would.

Weekly flight availability from Portsmouth to Buenos Aires

Explore weekly flight availability from Portsmouth to Buenos Aires. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 3 May 2026.

The most flights from P0R to BUE are scheduled on a Monday (3 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (3 on average).

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.

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

    While on average a flight from Portsmouth to Buenos Aires is generally £1,218, our data shows the cheapest flight currently is £967. When looking at the most popular route, (Southampton Eastleigh - Buenos Aires Ministro Pistarini), you can expect to pay £1,183 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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Top 9 airlines flying from Portsmouth to Buenos Aires

Discover the top 9 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 3 May 2026.
AirlineCheapestAverageFlexibilityOn-time
AviancaCheapest£678Average£785FlexibilityNo cancel feeOn-time71%
Search Avianca flights
IberiaCheapest£724Average£1,185FlexibilityNo cancel feeOn-time77%
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Air FranceCheapest£739Average£1,337FlexibilityNo cancel feeOn-time77%
Search Air France flights
LATAM AirlinesCheapest£835Average£996FlexibilityNo cancel feeOn-time81%
Search LATAM Airlines flights
Air EuropaCheapest£841Average£1,160FlexibilityNo cancel feeOn-time83%
Search Air Europa flights
American AirlinesCheapest£858Average£874FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
British AirwaysCheapest£859Average£1,052FlexibilityNo cancel feeOn-time70%
Search British Airways flights
LufthansaCheapest£913Average£1,196FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
FinnairCheapest£1,061Average£1,078FlexibilityNo cancel feeOn-time76%
Search Finnair flights

Fly with Cheapflights

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

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Buenos Aires from Portsmouth today with Cheapflights!

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

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Portsmouth to Buenos Aires for you. Better yet — we are completely free to use.

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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