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Cheap flights from London Heathrow Airport to Porto Alegre from £481

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London Heathrow Airport to Porto Alegre departing on 21/10. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Travel Warning: Due to flooding, the airport may be currently closed. Check local travel advisories before booking.

Find the cheapest flights from London Heathrow Airport to Porto Alegre

Cheap return flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
06:00 - 08:10
LHR
-
POA
29h 10m
2 stops
Multiple Airlines Logo
17:10 - 14:05
POA
-
LHR
17h 55m
1 stop
£813Multiple Airlines
Tue, 10 Nov - Tue, 24 Nov
Multiple Airlines Logo
21:40 - 21:50
LHR
-
POA
27h 10m
2 stops
Multiple Airlines Logo
17:10 - 14:05
POA
-
LHR
17h 55m
1 stop
£819Multiple Airlines
Thu, 12 Nov - Wed, 25 Nov
Multiple Airlines Logo
21:40 - 21:50
LHR
-
POA
27h 10m
2 stops
Multiple Airlines Logo
13:45 - 14:05
POA
-
LHR
21h 20m
1 stop
£822Multiple Airlines
Thu, 12 Nov - Wed, 25 Nov
LATAM Airlines Logo
20:15 - 15:20
LHR
-
POA
22h 05m
1 stop
LATAM Airlines Logo
03:50 - 14:05
POA
-
LHR
31h 15m
1 stop
£823LATAM Airlines
Thu, 12 Nov - Tue, 24 Nov
LATAM Airlines Logo
20:15 - 17:15
LHR
-
POA
24h 00m
1 stop
LATAM Airlines Logo
19:50 - 14:05
POA
-
LHR
15h 15m
1 stop
£824LATAM Airlines
Wed, 18 Nov - Wed, 2 Dec
Multiple Airlines Logo
21:40 - 21:50
LHR
-
POA
27h 10m
2 stops
Multiple Airlines Logo
17:10 - 14:05
POA
-
LHR
17h 55m
1 stop
£825Multiple Airlines
Thu, 12 Nov - Wed, 25 Nov
LATAM Airlines Logo
20:15 - 17:15
LHR
-
POA
24h 00m
1 stop
LATAM Airlines Logo
18:00 - 14:05
POA
-
LHR
17h 05m
1 stop
£832LATAM Airlines
Mon, 9 Nov - Mon, 23 Nov
LATAM Airlines Logo
20:15 - 08:30
LHR
-
POA
15h 15m
1 stop
LATAM Airlines Logo
18:00 - 14:05
POA
-
LHR
17h 05m
1 stop
£832LATAM Airlines
Mon, 9 Nov - Fri, 27 Nov
LATAM Airlines Logo
20:15 - 15:20
LHR
-
POA
22h 05m
1 stop
LATAM Airlines Logo
21:45 - 14:05
POA
-
LHR
37h 20m
2 stops
£833LATAM Airlines
Thu, 12 Nov - Sat, 28 Nov
LATAM Airlines Logo
20:15 - 17:15
LHR
-
POA
24h 00m
1 stop
LATAM Airlines Logo
13:00 - 14:05
POA
-
LHR
22h 05m
1 stop
£834LATAM Airlines
Mon, 9 Nov - Fri, 27 Nov

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LATAM Airlines flights from London Heathrow Airport to Porto Alegre

Our best LATAM Airlines deals on London Heathrow Airport to Porto Alegre flight tickets
LATAM Airlines
12 Nov
LHR20:15London Heathrow
22h 05m
1 stop
POA15:20Porto Alegre Salgado Filho
24 Nov
POA03:50Porto Alegre Salgado Filho
31h 15m
1 stop
LHR14:05London Heathrow
£823
LATAM Airlines
18 Nov
LHR20:15London Heathrow
24h 00m
1 stop
POA17:15Porto Alegre Salgado Filho
2 Dec
POA19:50Porto Alegre Salgado Filho
15h 15m
1 stop
LHR14:05London Heathrow
£824
LATAM Airlines
9 Nov
LHR20:15London Heathrow
24h 00m
1 stop
POA17:15Porto Alegre Salgado Filho
23 Nov
POA18:00Porto Alegre Salgado Filho
17h 05m
1 stop
LHR14:05London Heathrow
£832

TAP AIR PORTUGAL flights from London Heathrow Airport to Porto Alegre

Our best TAP AIR PORTUGAL deals on London Heathrow Airport to Porto Alegre flight tickets
TAP AIR PORTUGAL
23 Sept
LHR19:50London Heathrow
28h 35m
1 stop
POA20:25Porto Alegre Salgado Filho
8 Oct
POA21:55Porto Alegre Salgado Filho
15h 50m
1 stop
LHR17:45London Heathrow
£844
TAP AIR PORTUGAL
15 Jul
LHR06:00London Heathrow
21h 05m
2 stops
POA23:05Porto Alegre Salgado Filho
25 Aug
POA00:15Porto Alegre Salgado Filho
18h 40m
1 stop
LHR22:55London Heathrow
£1,258
TAP AIR PORTUGAL
15 Jul
LHR13:45London Heathrow
34h 40m
1 stop
POA20:25Porto Alegre Salgado Filho
25 Aug
POA00:15Porto Alegre Salgado Filho
18h 40m
1 stop
LHR22:55London Heathrow
£1,274

momondo Fare Finder

 
Customise your flight search to find flights from London Heathrow Airport to Porto Alegre 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, momondo users made 279,928 searches. Data last updated 11 July 2026.
Use the filters below to find and compare flights from London Heathrow Airport to Porto Alegre that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonPorto Alegre

LHR - POA

LHRPOA

London Heathrow

Tue 10/11

06:00-08:10

2 stops29h 10m

Porto Alegre Salgado Filho

Tue 24/11

17:10-14:05

1 stop17h 55m

£813

LondonPorto Alegre

LHR - POA

LHRPOA

London Heathrow

Thu 12/11

21:40-21:50

2 stops27h 10m

Porto Alegre Salgado Filho

Wed 25/11

17:10-14:05

1 stop17h 55m

£819

LondonPorto Alegre

LHR - POA

LHRPOA

London Heathrow

Thu 12/11

21:40-21:50

2 stops27h 10m

Porto Alegre Salgado Filho

Wed 25/11

13:45-14:05

1 stop21h 20m

£822

LondonPorto Alegre

LHR - POA

LHRPOA

London Heathrow

Thu 12/11

20:15-15:20

1 stop22h 05m

Porto Alegre Salgado Filho

Tue 24/11

03:50-14:05

1 stop31h 15m

£823

LondonPorto Alegre

LHR - POA

LHRPOA

London Heathrow

Wed 18/11

20:15-17:15

1 stop24h 00m

Porto Alegre Salgado Filho

Wed 2/12

19:50-14:05

1 stop15h 15m

£824

LondonPorto Alegre

LHR - POA

LHRPOA

London Heathrow

Thu 12/11

21:40-21:50

2 stops27h 10m

Porto Alegre Salgado Filho

Wed 25/11

17:10-14:05

1 stop17h 55m

£825

LondonPorto Alegre

LHR - POA

LHRPOA

London Heathrow

Mon 9/11

20:15-17:15

1 stop24h 00m

Porto Alegre Salgado Filho

Mon 23/11

18:00-14:05

1 stop17h 05m

£832
Fastest return journey

LondonPorto Alegre

LHR - POA

LHRPOA

London Heathrow

Mon 9/11

20:15-08:30

1 stop15h 15m

Porto Alegre Salgado Filho

Fri 27/11

18:00-14:05

1 stop17h 05m

£832

LondonPorto Alegre

LHR - POA

LHRPOA

London Heathrow

Thu 12/11

20:15-15:20

1 stop22h 05m

Porto Alegre Salgado Filho

Sat 28/11

21:45-14:05

2 stops37h 20m

£833

LondonPorto Alegre

LHR - POA

LHRPOA

London Heathrow

Mon 9/11

20:15-17:15

1 stop24h 00m

Porto Alegre Salgado Filho

Fri 27/11

13:00-14:05

1 stop22h 05m

£834

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Porto Alegre from

How to get the cheapest flight ticket from London Heathrow Airport to Porto Alegre

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between London Heathrow Airport and Porto Alegre?

What is the cheapest month to fly to Porto Alegre?

In general, April is the cheapest month to fly from London Heathrow Airport to Porto Alegre. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around £771. If you aren’t able to travel during the month of April, then book flights to Porto Alegre from London Heathrow Airport during March instead. Flights to Porto Alegre in March, while not as cheap as those in April, still average around £853.

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

You are more likely to see cheaper flights to Porto Alegre from London Heathrow Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Porto Alegre for around £1,033 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Porto Alegre from London Heathrow Airport for as low as £763 on momondo.

Can stopping save me money on London Heathrow Airport to Porto Alegre flights?

You could potentially save up to 41% on your flight if you consider stops on a London Heathrow Airport to Porto Alegre flight.

When to book flights from London Heathrow Airport to Porto Alegre

Are you open to changing your travel dates? Check out the ideal times to fly from London Heathrow Airport to Porto Alegre according to our flight data. Find out which month and days have the cheapest flights.
Estimated return price

Cheap London Heathrow Airport to Porto Alegre (LHR to POA) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from London Heathrow Airport to Porto Alegre

Fastest flight time

25h 25m

Direct flights

None
The fastest flight from London Heathrow Airport to Porto Alegre takes 25h 25m
There are no direct flights from London Heathrow Airport to Porto Alegre. There are no popular flight routes from London Heathrow Airport to Porto Alegre.
Search flight deals

Frequently asked questions about flying from London Heathrow Airport to Porto Alegre

  • How far is London Heathrow to Porto Alegre Salgado Filho by plane?

    The distance between London Heathrow and Porto Alegre Salgado Filho is about 6413.7 mi. 25h 25m is a normal flight duration for this route.

  • When did momondo last update prices for flights from London Heathrow Airport to Porto Alegre Salgado Filho Airport?

    Prices for flights from London Heathrow Airport to Porto Alegre Salgado Filho Airport are updated daily.

  • How many operators does momondo search for flights from London Heathrow Airport to Porto Alegre Salgado Filho Airport?

  • How old do you have to be to fly from London Heathrow Airport to Porto Alegre Salgado Filho Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from London Heathrow Airport to Porto Alegre Salgado Filho Airport.

  • What documentation or ID do you need to fly to Porto Alegre Salgado Filho Airport?

    The required travel and health documents for your Porto Alegre Salgado Filho Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Porto Alegre Salgado Filho Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular airline from London Heathrow Airport to Porto Alegre?

Best airlines flying from London Heathrow Airport to Porto Alegre

Compare and see reviews for airlines that fly from London Heathrow Airport to Porto Alegre with momondo
Airline
Rating
Free Cancellation
Price
TAP AIR PORTUGALPriceFrom £746Free CancellationRating
7.2
2,334 reviews
Search TAP AIR PORTUGAL flights
LATAM AirlinesPriceFrom £754Free CancellationRating
7.4
1,953 reviews
Search LATAM Airlines flights
Virgin AtlanticPriceFrom £1,123Free CancellationRating
7.5
693 reviews
Search Virgin Atlantic flights

Why use momondo?

Why should I use momondo to find a flight deal from London to Porto Alegre?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Porto Alegre from London.

Can I find flights from London to Porto Alegre with flexible booking policies on momondo?

Yes. All flights to Porto Alegre from London on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from London to Porto Alegre?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from London to Porto Alegre.

I’m not ready to book a flight from London to Porto Alegre right now. Can momondo alert me if prices change?

Price alerts on flights to Porto Alegre from London are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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LATAM Airlines
TAP AIR PORTUGAL
Virgin Atlantic