How long is the flight from Portsmouth to Buenos Aires?

Airlines like KLM fly from Portsmouth to Buenos Aires in about 54h 10m. The time it takes to get you to your destination can typically vary by up to . There are 6862 mi between Portsmouth and Buenos Aires.

In terms of precipitation, rainfall in Buenos Aires ranges from 50.0 - 100.0 inches per month. January is typically the wettest month, when rainfall can reach 100.0 mm. June is typically the driest time to visit Buenos Aires when rainfall is around 50.0 mm.

If weather is an important factor for your trip to Buenos Aires, use this chart to help with planning. For those seeking warmer temperatures, January is the ideal time of year to visit, when temperatures reach an average of 25.0 C. Travellers hoping to avoid the cold should look outside of June, when temperatures are typically at their lowest (around 11.0 C).

What are the cheapest flights from Portsmouth to Buenos Aires?

While on average a flight from Portsmouth to Buenos Aires is generally £2,350, our data shows the cheapest flight currently is £1,000. When looking at the most popular route, (Southampton Eastleigh - Buenos Aires Ministro Pistarini), you can expect to pay £1,377 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.

£1,322+ Cheap Flights from Portsmouth to Buenos Aires

Cheap flight deals from Portsmouth to Buenos Aires

Enter your travel dates to find the best prices.

Cheapest

Best

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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 14 September 2026.

Wed 28/1009:20 -

3 stops34h 48m

Tue 3/1102:05 -

3 stops35h 15m

Deal found 13/9£1,322

Tue 27/1008:40 -

2 stops54h 10m

Mon 2/1104:30 -

2 stops33h 35m

Deal found 12/9£1,365

Tue 27/1009:20 -

3 stops31h 20m

Mon 2/1104:30 -

3 stops36h 00m

Deal found 12/9£1,376

Find flight deals from Portsmouth to Buenos Aires

Round-trip from	£1,322
Popular in	December
Cheapest in	May
Average price	£933

28/10-3/11
6 total stops
70h 03m total
Portsmouth to Buenos Aires

Search Deals

Highest demand for flights based on searches. 6% potential increase in price (£48 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease (£18 potential savings vs. average return price).

Search Deals

Average for round-trip flights in September 2026

Search Deals

Cheapflights Fare Finder

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 return flight

SouthamptonBuenos Aires

SOU Southampton Eastleigh - EZE Buenos Aires Ministro Pistarini

SOUEZE

Southampton Eastleigh

Wed 28/10

09:20-17:08

3 stops34h 48m

Buenos Aires Ministro Pistarini

Tue 3/11

02:05-16:20

3 stops35h 15m

£1,322

SouthamptonBuenos Aires

SOU Southampton Eastleigh - EZE Buenos Aires Ministro Pistarini

SOUEZE

Southampton Eastleigh

Tue 27/10

08:40-11:50

2 stops54h 10m

Buenos Aires Ministro Pistarini

Mon 2/11

04:30-17:05

2 stops33h 35m

£1,365

SouthamptonBuenos Aires

SOU Southampton Eastleigh - EZE Buenos Aires Ministro Pistarini

SOUEZE

Southampton Eastleigh

Tue 27/10

09:20-13:40

3 stops31h 20m

Buenos Aires Ministro Pistarini

Mon 2/11

04:30-19:30

3 stops36h 00m

£1,376

Fastest return journey

SouthamptonBuenos Aires

SOU Southampton Eastleigh - EZE Buenos Aires Ministro Pistarini

SOUEZE

Southampton Eastleigh

Tue 15/12

17:30-07:35

2 stops41h 05m

Buenos Aires Ministro Pistarini

Wed 31/12

00:00-04:00

Nonstop0h 00m

£2,399

SouthamptonBuenos Aires

SOU Southampton Eastleigh - EZE Buenos Aires Ministro Pistarini

SOUEZE

Southampton Eastleigh

Wed 16/12

08:40-10:55

2 stops53h 15m

Buenos Aires Ministro Pistarini

Wed 31/12

00:00-04:00

Nonstop0h 00m

£2,399

SouthamptonBuenos Aires

SOU Southampton Eastleigh - EZE Buenos Aires Ministro Pistarini

SOUEZE

Southampton Eastleigh

Thu 17/12

17:30-07:35

2 stops41h 05m

Buenos Aires Ministro Pistarini

Wed 31/12

00:00-04:00

Nonstop0h 00m

£2,399

Flights are sorted by cheapest return flights first.

Deals found on 10/9

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.

SOU-EZE

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

P0R-BUE

SOU-EZE

What is the cheapest time of day to fly from P0R to BUE?

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

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

How long is the flight from Portsmouth to Buenos Aires?
Airlines like KLM fly from Portsmouth to Buenos Aires in about 54h 10m. The time it takes to get you to your destination can typically vary by up to . There are 6862 mi between Portsmouth and Buenos Aires.
What are the cheapest flights from Portsmouth to Buenos Aires?
While on average a flight from Portsmouth to Buenos Aires is generally £2,350, our data shows the cheapest flight currently is £1,000. When looking at the most popular route, (Southampton Eastleigh - Buenos Aires Ministro Pistarini), you can expect to pay £1,377 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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Alternative routes for Portsmouth to Buenos Aires

Heathrow to Ministro Pistarini flights

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Gatwick to San Carlos de Bariloche flights

Heathrow to Salta flights

Heathrow to San Carlos de Bariloche flights

Top 6 airlines flying from Portsmouth to Buenos Aires

Airline	Cheapest	Average	Flexibility	On-time
Avianca	Cheapest£681	Average£784	FlexibilityNo cancel fee	On-time71%	Search Avianca flights
Iberia	Cheapest£779	Average£1,041	FlexibilityNo cancel fee	On-time77%	Search Iberia flights
LATAM Airlines	Cheapest£838	Average£1,029	FlexibilityNo cancel fee	On-time81%	Search LATAM Airlines flights
American Airlines	Cheapest£861	Average£889	FlexibilityNo cancel fee	On-time71%	Search American Airlines flights
British Airways	Cheapest£872	Average£1,068	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
Lufthansa	Cheapest£917	Average£1,095	FlexibilityNo cancel fee	On-time76%	Search Lufthansa 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?

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Cheap flights from Portsmouth to Buenos Aires from £1,322

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 28/10. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Portsmouth to Buenos Aires

Cheapest flights from Portsmouth to Buenos AiresExplore 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 14 September 2026.

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 14 September 2026.

Best flights from Portsmouth to Buenos AiresDiscover carefully curated flight deals from Portsmouth to Buenos Aires that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 14 September 2026.

Discover carefully curated flight deals from Portsmouth to Buenos Aires that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 14 September 2026.

Last-minute flights from Portsmouth to Buenos AiresDiscover last-minute flight deals from Portsmouth to Buenos Aires. Data last updated 14 September 2026 and is based on user searches.

Discover last-minute flight deals from Portsmouth to Buenos Aires. Data last updated 14 September 2026 and is based on user searches.

One-way flights from Portsmouth to Buenos AiresSearch for one-way flight options from Portsmouth to Buenos Aires. Find affordable one-way fares based on user searches. Data last updated 14 September 2026.

Search for one-way flight options from Portsmouth to Buenos Aires. Find affordable one-way fares based on user searches. Data last updated 14 September 2026.

Find flight deals from Portsmouth to Buenos Aires

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Use the filters below to find and compare flights from Portsmouth to Buenos Aires that are best for you.

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.

Cheapflights Insights

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 14 September 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

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

How long is the flight from Portsmouth to Buenos Aires?

What are the cheapest flights from Portsmouth to Buenos Aires?

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

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

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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Portsmouth to Buenos Aires

See prices for flight routes from nearby airports that may be better suited for you.

Other flights to Buenos Aires

Explore flights to Buenos Aires departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 14 September 2026.

Complete your trip

Complete your trip to Buenos Aires by adding a car hire and/or hotel booking to your travel itinerary.

Direct flights to Argentina

Book a non-stop flight to one of these other cities located in Argentina.

Search flights from Portsmouth to Buenos Aires by cabin class

Find flights from Portsmouth to Buenos Aires, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Portsmouth and Buenos Aires flights

Browse other Portsmouth and Buenos Aires flight options. Last updated on 14 September 2026.

Popular flight searches

Check out other popular destinations found by fellow travellers in 2026

Top 6 airlines flying from Portsmouth to Buenos Aires

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

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

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

Can Cheapflights notify me if prices for flights from Portsmouth to Buenos Aires become cheaper?

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Book with Flexibility

Travel Smart

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 14 September 2026.

Best flights from Portsmouth to Buenos Aires
Discover carefully curated flight deals from Portsmouth to Buenos Aires that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 14 September 2026.

Last-minute flights from Portsmouth to Buenos Aires
Discover last-minute flight deals from Portsmouth to Buenos Aires. Data last updated 14 September 2026 and is based on user searches.

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 14 September 2026.