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Cheap flights from London Heathrow Airport to Porto Alegre from £490

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 22/4. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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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
22:05 - 21:15
LHR
-
POA
27h 10m
2 stops
Multiple Airlines Logo
12:10 - 15:35
POA
-
LHR
23h 25m
2 stops
£798Multiple Airlines
Tue, 5 May - Fri, 5 Jun
LATAM Airlines Logo
21:20 - 08:50
LHR
-
POA
15h 30m
1 stop
LATAM Airlines Logo
21:40 - 15:05
POA
-
LHR
37h 25m
2 stops
£807LATAM Airlines
Sun, 19 Apr - Tue, 9 Jun
LATAM Airlines Logo
19:30 - 23:35
LHR
-
POA
32h 05m
2 stops
LATAM Airlines Logo
21:40 - 15:05
POA
-
LHR
37h 25m
2 stops
£810LATAM Airlines
Sun, 19 Apr - Tue, 9 Jun
LATAM Airlines Logo
21:20 - 09:20
LHR
-
POA
16h 00m
1 stop
LATAM Airlines Logo
17:50 - 15:05
POA
-
LHR
17h 15m
1 stop
£813LATAM Airlines
Tue, 5 May - Fri, 5 Jun
LATAM Airlines Logo
21:20 - 09:20
LHR
-
POA
16h 00m
1 stop
LATAM Airlines Logo
15:00 - 15:05
POA
-
LHR
20h 05m
2 stops
£818LATAM Airlines
Thu, 14 May - Sun, 14 Jun
LATAM Airlines Logo
21:20 - 09:20
LHR
-
POA
16h 00m
1 stop
LATAM Airlines Logo
21:40 - 15:05
POA
-
LHR
37h 25m
2 stops
£822LATAM Airlines
Tue, 5 May - Fri, 5 Jun
Multiple Airlines Logo
06:30 - 23:45
LHR
-
POA
21h 15m
2 stops
Multiple Airlines Logo
16:15 - 16:35
POA
-
LHR
20h 20m
2 stops
£848Multiple Airlines
Thu, 14 May - Sun, 14 Jun
TAP AIR PORTUGAL Logo
19:50 - 21:45
LHR
-
POA
29h 55m
1 stop
TAP AIR PORTUGAL Logo
15:45 - 17:45
POA
-
LHR
22h 00m
2 stops
£868TAP AIR PORTUGAL
Mon, 4 May - Thu, 21 May
TAP AIR PORTUGAL Logo
18:45 - 21:45
LHR
-
POA
31h 00m
1 stop
TAP AIR PORTUGAL Logo
21:55 - 22:55
POA
-
LHR
21h 00m
1 stop
£878TAP AIR PORTUGAL
Mon, 4 May - Thu, 21 May
TAP AIR PORTUGAL Logo
18:45 - 21:45
LHR
-
POA
31h 00m
1 stop
TAP AIR PORTUGAL Logo
21:55 - 18:50
POA
-
LHR
16h 55m
1 stop
£878TAP AIR PORTUGAL
Mon, 4 May - Thu, 21 May

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
19 Apr
LHR21:20London Heathrow
15h 30m
1 stop
POA08:50Porto Alegre Salgado Filho
9 Jun
POA21:40Porto Alegre Salgado Filho
37h 25m
2 stops
LHR15:05London Heathrow
£807
LATAM Airlines
19 Apr
LHR19:30London Heathrow
32h 05m
2 stops
POA23:35Porto Alegre Salgado Filho
9 Jun
POA21:40Porto Alegre Salgado Filho
37h 25m
2 stops
LHR15:05London Heathrow
£810
LATAM Airlines
5 May
LHR21:20London Heathrow
16h 00m
1 stop
POA09:20Porto Alegre Salgado Filho
5 Jun
POA17:50Porto Alegre Salgado Filho
17h 15m
1 stop
LHR15:05London Heathrow
£813

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
4 May
LHR19:50London Heathrow
29h 55m
1 stop
POA21:45Porto Alegre Salgado Filho
21 May
POA15:45Porto Alegre Salgado Filho
22h 00m
2 stops
LHR17:45London Heathrow
£868
TAP AIR PORTUGAL
4 May
LHR18:45London Heathrow
31h 00m
1 stop
POA21:45Porto Alegre Salgado Filho
21 May
POA21:55Porto Alegre Salgado Filho
21h 00m
1 stop
LHR22:55London Heathrow
£878
TAP AIR PORTUGAL
4 May
LHR18:45London Heathrow
31h 00m
1 stop
POA21:45Porto Alegre Salgado Filho
21 May
POA21:55Porto Alegre Salgado Filho
16h 55m
1 stop
LHR18:50London Heathrow
£878

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 21 March 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 5/5

22:05-21:15

2 stops27h 10m

Porto Alegre Salgado Filho

Fri 5/6

12:10-15:35

2 stops23h 25m

£798

LondonPorto Alegre

LHR - POA

LHRPOA

London Heathrow

Sun 19/4

21:20-08:50

1 stop15h 30m

Porto Alegre Salgado Filho

Tue 9/6

21:40-15:05

2 stops37h 25m

£807

LondonPorto Alegre

LHR - POA

LHRPOA

London Heathrow

Sun 19/4

19:30-23:35

2 stops32h 05m

Porto Alegre Salgado Filho

Tue 9/6

21:40-15:05

2 stops37h 25m

£810
Fastest return journey

LondonPorto Alegre

LHR - POA

LHRPOA

London Heathrow

Tue 5/5

21:20-09:20

1 stop16h 00m

Porto Alegre Salgado Filho

Fri 5/6

17:50-15:05

1 stop17h 15m

£813

LondonPorto Alegre

LHR - POA

LHRPOA

London Heathrow

Thu 14/5

21:20-09:20

1 stop16h 00m

Porto Alegre Salgado Filho

Sun 14/6

15:00-15:05

2 stops20h 05m

£818

LondonPorto Alegre

LHR - POA

LHRPOA

London Heathrow

Tue 5/5

21:20-09:20

1 stop16h 00m

Porto Alegre Salgado Filho

Fri 5/6

21:40-15:05

2 stops37h 25m

£822

LondonPorto Alegre

LHR - POA

LHRPOA

London Heathrow

Thu 14/5

06:30-23:45

2 stops21h 15m

Porto Alegre Salgado Filho

Sun 14/6

16:15-16:35

2 stops20h 20m

£848

LondonPorto Alegre

LHR - POA

LHRPOA

London Heathrow

Mon 4/5

19:50-21:45

1 stop29h 55m

Porto Alegre Salgado Filho

Thu 21/5

15:45-17:45

2 stops22h 00m

£868

LondonPorto Alegre

LHR - POA

LHRPOA

London Heathrow

Mon 4/5

18:45-21:45

1 stop31h 00m

Porto Alegre Salgado Filho

Thu 21/5

21:55-22:55

1 stop21h 00m

£878

LondonPorto Alegre

LHR - POA

LHRPOA

London Heathrow

Mon 4/5

18:45-21:45

1 stop31h 00m

Porto Alegre Salgado Filho

Thu 21/5

21:55-18:50

1 stop16h 55m

£878

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 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 £748. If you aren’t able to travel during the month of April, then book flights to Porto Alegre from London Heathrow Airport during November instead. Flights to Porto Alegre in November, while not as cheap as those in April, still average around £799.

How far in advance should I book a flight 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 £961 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 £715 on momondo.

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

You could potentially save up to 33% 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

21h 15m

Direct flights

None
The fastest flight from London Heathrow Airport to Porto Alegre takes 21h 15m
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

  • 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. 21h 15m 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 £698Free CancellationRating
7.1
2,170 reviews
Search TAP AIR PORTUGAL flights
LATAM AirlinesPriceFrom £744Free CancellationRating
7.4
1,916 reviews
Search LATAM Airlines flights
Virgin AtlanticPriceFrom £1,126Free CancellationRating
7.5
682 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.

An easier way to manage your Porto Alegre trip

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Fly your favourite airline to Porto Alegre

Airlines are sorted and displayed according to clicks in the past 7 days on momondo
LATAM Airlines
TAP AIR PORTUGAL
Virgin Atlantic