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Cheap Flights from London Heathrow to Porto Alegre

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Compare London Heathrow to Porto Alegre flight deals

Find the cheapest month or even day of the year to fly to Porto Alegre

Book the best Porto Alegre fare with no extra fees

Flight deals from London Heathrow to Porto Alegre

Looking for a cheap last-minute deal or the best return flight from London Heathrow to Porto Alegre? Find the lowest prices on one-way and return tickets right here.
Porto Alegre.R 8,655 per passenger.Departing Tue, 9 Sep.One-way flight with British Airways.Outbound indirect flight with British Airways, departs from London Heathrow on Tue, 9 Sep, arriving in Porto Alegre.Price includes taxes and charges.From R 8,655, select.
Porto Alegre.R 9,151 per passenger.Departing Tue, 3 Mar.One-way flight with Iberia.Outbound indirect flight with Iberia, departs from London Heathrow on Tue, 3 Mar, arriving in Porto Alegre.Price includes taxes and charges.From R 9,151, select.
Porto Alegre.R 9,566 per passenger.Departing Sun, 31 Aug.One-way flight with Vueling Airlines.Outbound indirect flight with Vueling Airlines, departs from London Heathrow on Sun, 31 Aug, arriving in Porto Alegre.Price includes taxes and charges.From R 9,566, select.
Porto Alegre.R 9,953 per passenger.Departing Wed, 3 Dec.One-way flight with Iberia.Outbound indirect flight with Iberia, departs from London Heathrow on Wed, 3 Dec, arriving in Porto Alegre.Price includes taxes and charges.From R 9,953, select.
Porto Alegre.R 10,010 per passenger.Departing Mon, 23 Feb.One-way flight with Iberia.Outbound indirect flight with Iberia, departs from London Heathrow on Mon, 23 Feb, arriving in Porto Alegre.Price includes taxes and charges.From R 10,010, select.
Porto Alegre.R 10,152 per passenger.Departing Thu, 6 Nov.One-way flight with Iberia.Outbound indirect flight with Iberia, departs from London Heathrow on Thu, 6 Nov, arriving in Porto Alegre.Price includes taxes and charges.From R 10,152, select.
Porto Alegre.R 11,950 per passenger.Departing Fri, 31 Oct.One-way flight with British Airways.Outbound indirect flight with British Airways, departs from London Heathrow on Fri, 31 Oct, arriving in Porto Alegre.Price includes taxes and charges.From R 11,950, select.
Porto Alegre.R 12,606 per passenger.Departing Mon, 9 Jun.One-way flight with TAP Air Portugal.Outbound indirect flight with TAP Air Portugal, departs from London Heathrow on Mon, 9 Jun, arriving in Porto Alegre.Price includes taxes and charges.From R 12,606, select.

Find the cheapest month to fly from London Heathrow to Porto Alegre

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like London Heathrow to Porto Alegre flights are currently cheapest in September.
Jun
from R 12,606
Jul
from R 14,307
Aug
from R 9,566
Sep
from R 8,655
Oct
from R 11,950
Nov
from R 10,152
Dec
from R 9,953
Jan
from R 12,720
Feb
from R 10,010
Mar
from R 9,151
Apr
from R 16,367
May
from R 16,367

London Heathrow to Porto Alegre: Alternative routes

Compare routes from London Heathrow to Porto Alegre below. You may find an airport to fly into that's cheaper, faster, or easier than Porto Alegre.

London to Porto Alegre: Flight information

The things to know before you go.
Cheapest flight foundR 8,655
Cheapest month to flySeptember

Finding cheap flights from London Heathrow to Porto Alegre: Frequently asked questions

The best price we found for a return flight from London Heathrow to Porto Alegre is R 18,335. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from London Heathrow to Porto Alegre. But we found flights with one or more stops from R 18,335.
As of June 2025, there are no flights flying from London Heathrow to Porto Alegre.
The cheapest month to fly from London Heathrow to Porto Alegre is usually June 2025.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from London Heathrow Airport to Porto Alegre Airport on Wednesday, 17 September 2025.
No airlines currently offer direct flights between London Heathrow Airport and Porto Alegre Airport. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Porto Alegre but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Porto Alegre is around 40 days in advance, so don’t leave your flight to the last minute.
Currently, TAP Air Portugal offers the cheapest flight tickets to Porto Alegre.

Flying from London Heathrow Airport (LHR) to Salgado Filho International Airport (POA): what you need to know

  • Porto Alegre is three hours behind London and is in the UTC-3 timezone.

  • For a stress-free journey, arrive at the airport two hours ahead of international flights and an hour before domestic departures. This will give you enough time to catch your LHR to POA flight.

  • During popular months such as July, you'll want to get to the airport earlier. Arrive two hours before domestic departures and four hours ahead for an international flight whenever you're flying during a high season in general.

  • Opt for a stopover if you'd love to break up your flight. Just uncheck 'Direct flights only' to look at your options for tickets from London Heathrow Airport to Salgado Filho International Airport. Arturo Merino Benitez Airport is a top stopover on the LHR to POA route.

How to find the cheapest flights from London Heathrow Airport (LHR) to Salgado Filho International Airport (POA)

  • R 8,655 is currently the lowest price for a one-way London Heathrow Airport to Salgado Filho International Airport flight. A return flight starts from R 18,335. These fares can change based on availability.

  • To score cheap tickets from LHR to POA, book in advance. Airlines tend to offer their best fares when flights are first made available.

  • Getting cheap flights from London Heathrow Airport to Salgado Filho International Airport is more likely if you can be flexible with your travel plans. Use the 'Whole month' function to see the best prices across every month and score a great deal.

  • Landing cheap flights from LHR to POA is easy with Price Alerts. All you need to do is create one of these automatic alerts and we'll get in touch when a lower fare pops up.

  • Tailor your trip using filters. Select your preferred departure and arrival times, total journey duration and airlines. You can also sort the results by 'Best,' 'Fastest' or 'Cheapest' flights from London Heathrow Airport to Salgado Filho International Airport.

Handy information about London Heathrow Airport (LHR)

  • 68.18% of flights that leave from London Heathrow Airport arrive at their destination on schedule.

  • To get to London Heathrow Airport from central London, it takes around 55 minutes if you're planning to drive. This depends on traffic, however. It's approximately 31 kilometres from the airport to the city centre.

  • Taking public transport? Expect a trip time of around 1 hour.

  • Get your travels off to a leisurely start by staying near LHR. Whether you have an early flight from London Heathrow Airport to Salgado Filho International Airport or want to avoid feeling rushed, these hotels are ideal:

Arriving at Salgado Filho International Airport (POA)

Getting from Salgado Filho International Airport (POA) to central Porto Alegre

  • Salgado Filho International Airport to central Porto Alegre has a drive time of around 20 minutes. It's approximately 11 kilometres away.

  • Getting there by public transport takes about 50 minutes.

When to fly to Salgado Filho International Airport (POA)

  • It's time to choose your dates for your flight from London Heathrow Airport to Salgado Filho International Airport. June is the most popular month to head to Porto Alegre. If you prefer a more laid-back vibe, go in May.

  • Lock in your flight from London Heathrow Airport to Salgado Filho International Airport for January if you want to explore Porto Alegre during its warmest month. You can expect temperatures of between 17ºC (63ºF) and 34ºC (93ºF).

  • July has average temperatures of between 8ºC (46ºF) and 23ºC (73ºF). Search for cheap tickets from LHR to POA sometime around then if you want to travel when it's cooler.

Explore more of Brazil

  • Joinville is just one of the many cities in Brazil waiting to be discovered after you've seen Porto Alegre. Around 483 kilometres away to the north-east, well-known attractions include Rua das Palmeiras, Parque Zoobotanico and Expoville Park.

  • Florianopolis is another essential stop in Brazil and is around 370 kilometres north-east of Porto Alegre. No trip is complete without visiting Joaquina beach, Farol da Barra da Lagoa and Hercilio Luz Bridge.

Plan the rest of your trip from London to Porto Alegre

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.