Q: How much does it cost for a return flight from London Heathrow Airport to Porto Alegre?

Airfare is below average for this route at the moment. London Heathrow Airport to Porto Alegre flights typically cost between £1,209 and £1,515 in September. The cheapest return price found within the last 5 days was £830 on Multiple Airlines (10 Sept–26 Sept).

Question 1

What’s the fastest stopover option from London Heathrow Airport to Porto Alegre?

Accepted Answer

Flights via Sao Paulo (GRU) have the shortest average one-way travel time for one-stop routes: 16h 08m.

Question 2

What’s the cheapest stopover airport for flights from London Heathrow Airport to Porto Alegre?

Accepted Answer

Lisbon (LIS) is the most affordable one-stop option, with an average return flight price of £846.

Question 3

How much does it cost for a return flight from London Heathrow Airport to Porto Alegre?

Accepted Answer

Airfare is below average for this route at the moment.London Heathrow Airport to Porto Alegre flights typically cost between £1,209 and £1,515 in September.
The cheapest return price found within the last 5 days was £830 on Multiple Airlines (10 Sept–26 Sept).

Question 4

Which airport typically offers the quickest stopover for flights from London Heathrow Airport to Porto Alegre?

Accepted Answer

Flights via Sao Paulo (GRU) offer the fastest connection on this route, with an average stopover time of 3h 03m.

Question 5

What’s the top stopover airport for flights from London Heathrow Airport to Porto Alegre?

Accepted Answer

Sao Paulo (GRU) – chosen by Cheapflights users on 67% of one-stop itineraries from London Heathrow Airport to Porto Alegre on Cheapflights.

Question 6

How long is the flight from London Heathrow Airport to Porto Alegre?

Accepted Answer

For as low as £839, LATAM Airlines can have you in Porto Alegre from London Heathrow Airport in 15h 15m. The distance between London Heathrow Airport and Porto Alegre is about 6410 mi. Both multi-stop and direct flights can be found to your destination and back.

Question 7

What are the cheapest airlines flying from London Heathrow Airport to Porto Alegre round-trip?

Accepted Answer

Our cheapest airline available from London Heathrow Airport to Porto Alegre is TAP AIR PORTUGAL. Our recent data shows that you can find tickets from as low as £747 on this airline. Additional options worth looking into are LATAM Airlines and Virgin Atlantic, starting at £752 and £1,124 round-trip. You may be able to fly from London Heathrow Airport to Porto Alegre for 28% less than the average price by searching for these airlines.

Question 8

How far ahead should I book a flight from London Heathrow Airport to Porto Alegre?

Accepted Answer

The price you pay for your flight from London Heathrow Airport to Porto Alegre may vary depending on when you book. For the best chance of a lower fare, look to book 57 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

Question 9

What is the cheapest month to book a flight from London Heathrow Airport to Porto Alegre?

Accepted Answer

Currently, April is the cheapest month in which you can book a flight from London Heathrow Airport to Porto Alegre (average of £771). Flying from London Heathrow Airport to Porto Alegre in July is currently the most expensive (average of £1,479). 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.

Question 10

E

Accepted Answer

In terms of precipitation, rainfall in Porto Alegre ranges from 70.0 - 130.0 inches per month. September is typically the wettest month, when rainfall can reach 130.0 mm. November is typically the driest time to visit Porto Alegre when rainfall is around 70.0 mm.

Question 11

E

Accepted Answer

If weather is an important factor for your trip to Porto Alegre, use this chart to help with planning. For those seeking warmer temperatures, February 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 13.0 C).

Question 12

What are the most popular airlines that fly from London Heathrow Airport to Porto Alegre?

Accepted Answer

Consider LATAM Airlines, TAP AIR PORTUGAL or Virgin Atlantic when booking your flight. These represent the most popular airlines when flying from London Heathrow Airport to Porto Alegre.

Question 13

What is the cheapest time of day to fly from LHR to POA?

Accepted Answer

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from London Heathrow Airport to Porto Alegre as you normally would.

Question 14

What airport do you fly into for flights to Porto Alegre from London Heathrow?

Accepted Answer

Porto Alegre Salgado Filho (POA) is the airport you will fly into if you book a flight from London Heathrow to Porto Alegre. You should not have trouble finding flights to Salgado Filho from London Heathrow; the airport handles an average of 0 inbound flights from London Heathrow per day. You should also have plenty of airline options to choose from since 3 airlines have flights to the Porto Alegre airport from London Heathrow. It is only a 4.0 mi journey from Salgado Filho (POA) to Porto Alegre’s city center.

Question 15

Can I find deals for flights from Heathrow to Porto Alegre that include hotel bookings?

Accepted Answer

Yes. In addition to deals on Heathrow to Porto Alegre flights, Cheapflights offers holiday packages that include both flights and hotel.

Question 16

How can I find direct flights from Heathrow to Porto Alegre?

Accepted Answer

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Heathrow to Porto Alegre.

Question 17

Can I find deals for business class flights from Heathrow to Porto Alegre?

Accepted Answer

Yes. Cheapflights offers flight deals from Heathrow to Porto Alegre by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

Question 18

How does Cheapflights help users find flights from Heathrow to Porto Alegre?

Accepted Answer

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 Porto Alegre from Heathrow today with Cheapflights!

Question 19

Why should you use Cheapflights to find cheap flight tickets from Heathrow to Porto Alegre?

Accepted Answer

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Heathrow to Porto Alegre.

Question 20

Can Cheapflights find flights from Heathrow to Porto Alegre with no change fees?

Accepted Answer

Certainly. Search results for flights to Porto Alegre from Heathrow shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Question 21

Can Cheapflights notify me if prices for flights from Heathrow to Porto Alegre become cheaper?

Accepted Answer

Of course! You can now track prices for flights from Heathrow to Porto Alegre 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.

Round-trip from	£830
One-way from	£378
Popular in	July
Cheapest in	April
Average price	£1,479

Airline	Cheapest	Average	Flexibility	On-time
TAP AIR PORTUGAL	Cheapest£747	Average£851	FlexibilityNo cancel fee	On-timeN/A	Search TAP AIR PORTUGAL flights
LATAM Airlines	Cheapest£752	Average£1,102	FlexibilityNo cancel fee	On-time81%	Search LATAM Airlines flights
Virgin Atlantic	Cheapest£1,124	Average£1,547	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights

Cheap flights from London Heathrow Airport to Porto Alegre from £378

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 19/8. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Heathrow to Porto Alegre

Cheapest flights from Heathrow to Porto AlegreExplore the most affordable flight options available from Heathrow to Porto Alegre. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 22 July 2026.

Explore the most affordable flight options available from Heathrow to Porto Alegre. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 22 July 2026.

Best flights from Heathrow to Porto AlegreDiscover carefully curated flight deals from Heathrow to Porto Alegre that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 22 July 2026.

Discover carefully curated flight deals from Heathrow to Porto Alegre that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 22 July 2026.

Last-minute flights from Heathrow to Porto AlegreDiscover last-minute flight deals from Heathrow to Porto Alegre. Data last updated 22 July 2026 and is based on user searches.

Discover last-minute flight deals from Heathrow to Porto Alegre. Data last updated 22 July 2026 and is based on user searches.

One-way flights from Heathrow to Porto AlegreSearch for one-way flight options from Heathrow to Porto Alegre. Find affordable one-way fares based on user searches. Data last updated 22 July 2026.

Search for one-way flight options from Heathrow to Porto Alegre. Find affordable one-way fares based on user searches. Data last updated 22 July 2026.

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Cheapflights Insights

How far ahead should I book a flight from London Heathrow Airport to Porto Alegre?

The price you pay for your flight from London Heathrow Airport to Porto Alegre may vary depending on when you book. For the best chance of a lower fare, look to book 57 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from London Heathrow Airport to Porto Alegre?

How much does it cost for a return flight from London Heathrow Airport to Porto Alegre?

What’s the top stopover airport for flights from London Heathrow Airport to Porto Alegre?

Sao Paulo (GRU) – chosen by Cheapflights users on 67% of one-stop itineraries from London Heathrow Airport to Porto Alegre on Cheapflights.

What’s the cheapest stopover airport for flights from London Heathrow Airport to Porto Alegre?

Lisbon (LIS) is the most affordable one-stop option, with an average return flight price of £846.

What’s the fastest stopover option from London Heathrow Airport to Porto Alegre?

Flights via Sao Paulo (GRU) have the shortest average one-way travel time for one-stop routes: 16h 08m.

Which airport typically offers the quickest stopover for flights from London Heathrow Airport to Porto Alegre?

Flights via Sao Paulo (GRU) offer the fastest connection on this route, with an average stopover time of 3h 03m.

Reviews of airlines servicing Porto Alegre

Related info for your journey

What airport do you fly into for flights to Porto Alegre from London Heathrow?

How long is the flight from London Heathrow Airport to Porto Alegre?

What are the cheapest airlines flying from London Heathrow Airport to Porto Alegre round-trip?

Can I find deals for flights from Heathrow to Porto Alegre that include hotel bookings?

How can I find direct flights from Heathrow to Porto Alegre?

Can I find deals for business class flights from Heathrow to Porto Alegre?

What is the cheapest month to book a flight from London Heathrow Airport to Porto Alegre?

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Can Cheapflights notify me if prices for flights from Heathrow to Porto Alegre become cheaper?

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Cheapest flights from Heathrow to Porto Alegre
Explore the most affordable flight options available from Heathrow to Porto Alegre. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 22 July 2026.

Best flights from Heathrow to Porto Alegre
Discover carefully curated flight deals from Heathrow to Porto Alegre that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 22 July 2026.

Last-minute flights from Heathrow to Porto Alegre
Discover last-minute flight deals from Heathrow to Porto Alegre. Data last updated 22 July 2026 and is based on user searches.

One-way flights from Heathrow to Porto Alegre
Search for one-way flight options from Heathrow to Porto Alegre. Find affordable one-way fares based on user searches. Data last updated 22 July 2026.