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Cheap flights from London Heathrow Airport to Porto Alegre from £501

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 16/8. 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
06:00 - 23:25
LHR
-
POA
21h 25m
2 stops
Multiple Airlines Logo
15:55 - 22:55
POA
-
LHR
27h 00m
2 stops
£843Multiple Airlines
Wed, 27 May - Thu, 18 Jun
Multiple Airlines Logo
22:05 - 22:45
LHR
-
POA
28h 40m
2 stops
Multiple Airlines Logo
06:00 - 16:15
POA
-
LHR
30h 15m
2 stops
£858Multiple Airlines
Fri, 5 Jun - Sun, 21 Jun
Multiple Airlines Logo
22:05 - 22:45
LHR
-
POA
28h 40m
2 stops
Multiple Airlines Logo
12:00 - 15:05
POA
-
LHR
23h 05m
1 stop
£865Multiple Airlines
Fri, 5 Jun - Sun, 21 Jun
Multiple Airlines Logo
22:05 - 20:05
LHR
-
POA
26h 00m
2 stops
Multiple Airlines Logo
09:45 - 21:35
POA
-
LHR
31h 50m
2 stops
£867Multiple Airlines
Mon, 1 Jun - Wed, 17 Jun
Multiple Airlines Logo
22:05 - 20:05
LHR
-
POA
26h 00m
2 stops
Multiple Airlines Logo
18:25 - 15:05
POA
-
LHR
16h 40m
1 stop
£884Multiple Airlines
Mon, 1 Jun - Wed, 17 Jun
Multiple Airlines Logo
22:05 - 22:45
LHR
-
POA
28h 40m
2 stops
Multiple Airlines Logo
12:00 - 15:05
POA
-
LHR
23h 05m
1 stop
£886Multiple Airlines
Fri, 5 Jun - Sun, 21 Jun
Multiple Airlines Logo
22:05 - 22:45
LHR
-
POA
28h 40m
2 stops
Multiple Airlines Logo
06:40 - 13:50
POA
-
LHR
27h 10m
2 stops
£914Multiple Airlines
Fri, 5 Jun - Sat, 20 Jun
Multiple Airlines Logo
22:05 - 19:05
LHR
-
POA
25h 00m
2 stops
Multiple Airlines Logo
16:55 - 15:05
POA
-
LHR
18h 10m
1 stop
£919Multiple Airlines
Fri, 5 Jun - Sat, 20 Jun
LATAM Airlines Logo
21:20 - 19:20
LHR
-
POA
26h 00m
1 stop
LATAM Airlines Logo
12:35 - 14:05
POA
-
LHR
22h 30m
1 stop
£947LATAM Airlines
Thu, 1 Oct - Thu, 29 Oct
Multiple Airlines Logo
22:05 - 22:45
LHR
-
POA
28h 40m
2 stops
Multiple Airlines Logo
14:25 - 15:05
POA
-
LHR
20h 40m
2 stops
£954Multiple Airlines
Fri, 5 Jun - Sun, 21 Jun

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
1 Oct
LHR21:20London Heathrow
26h 00m
1 stop
POA19:20Porto Alegre Salgado Filho
29 Oct
POA12:35Porto Alegre Salgado Filho
22h 30m
1 stop
LHR14:05London Heathrow
£947
LATAM Airlines
27 May
LHR21:20London Heathrow
23h 40m
1 stop
POA17:00Porto Alegre Salgado Filho
18 Jun
POA10:00Porto Alegre Salgado Filho
25h 05m
1 stop
LHR15:05London Heathrow
£982
LATAM Airlines
1 Oct
LHR21:20London Heathrow
16h 00m
1 stop
POA09:20Porto Alegre Salgado Filho
29 Oct
POA15:30Porto Alegre Salgado Filho
19h 35m
2 stops
LHR14:05London Heathrow
£1,001

SWISS flights from London Heathrow Airport to Porto Alegre

Our best SWISS deals on London Heathrow Airport to Porto Alegre flight tickets
SWISS
20 Oct
LHR17:15London Heathrow
20h 05m
2 stops
POA09:20Porto Alegre Salgado Filho
3 Nov
POA15:15Porto Alegre Salgado Filho
18h 45m
2 stops
LHR13:00London Heathrow
£1,022
SWISS
26 Aug
LHR18:40London Heathrow
18h 35m
2 stops
POA09:15Porto Alegre Salgado Filho
5 Sept
POA14:25Porto Alegre Salgado Filho
22h 00m
2 stops
LHR16:25London Heathrow
£1,148
SWISS
1 Oct
LHR18:40London Heathrow
18h 35m
2 stops
POA09:15Porto Alegre Salgado Filho
29 Oct
POA15:15Porto Alegre Salgado Filho
22h 25m
3 stops
LHR16:40London Heathrow
£1,154

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 13 May 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

Wed 27/5

06:00-23:25

2 stops21h 25m

Porto Alegre Salgado Filho

Thu 18/6

15:55-22:55

2 stops27h 00m

£843

LondonPorto Alegre

LHR - POA

LHRPOA

London Heathrow

Fri 5/6

22:05-22:45

2 stops28h 40m

Porto Alegre Salgado Filho

Sun 21/6

06:00-16:15

2 stops30h 15m

£858

LondonPorto Alegre

LHR - POA

LHRPOA

London Heathrow

Fri 5/6

22:05-22:45

2 stops28h 40m

Porto Alegre Salgado Filho

Sun 21/6

12:00-15:05

1 stop23h 05m

£865

LondonPorto Alegre

LHR - POA

LHRPOA

London Heathrow

Mon 1/6

22:05-20:05

2 stops26h 00m

Porto Alegre Salgado Filho

Wed 17/6

09:45-21:35

2 stops31h 50m

£867
Fastest return journey

LondonPorto Alegre

LHR - POA

LHRPOA

London Heathrow

Mon 1/6

22:05-20:05

2 stops26h 00m

Porto Alegre Salgado Filho

Wed 17/6

18:25-15:05

1 stop16h 40m

£884

LondonPorto Alegre

LHR - POA

LHRPOA

London Heathrow

Fri 5/6

22:05-22:45

2 stops28h 40m

Porto Alegre Salgado Filho

Sun 21/6

12:00-15:05

1 stop23h 05m

£886

LondonPorto Alegre

LHR - POA

LHRPOA

London Heathrow

Fri 5/6

22:05-22:45

2 stops28h 40m

Porto Alegre Salgado Filho

Sat 20/6

06:40-13:50

2 stops27h 10m

£914

LondonPorto Alegre

LHR - POA

LHRPOA

London Heathrow

Fri 5/6

22:05-19:05

2 stops25h 00m

Porto Alegre Salgado Filho

Sat 20/6

16:55-15:05

1 stop18h 10m

£919

LondonPorto Alegre

LHR - POA

LHRPOA

London Heathrow

Thu 1/10

21:20-19:20

1 stop26h 00m

Porto Alegre Salgado Filho

Thu 29/10

12:35-14:05

1 stop22h 30m

£947

LondonPorto Alegre

LHR - POA

LHRPOA

London Heathrow

Fri 5/6

22:05-22:45

2 stops28h 40m

Porto Alegre Salgado Filho

Sun 21/6

14:25-15:05

2 stops20h 40m

£954

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 £763. 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 £789.

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 £996 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 £706 on momondo.

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

You could potentially save up to 37% 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

16h 40m

Direct flights

None
The fastest flight from London Heathrow Airport to Porto Alegre takes 16h 40m
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. 16h 40m 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 £707Free CancellationRating
7.2
2,250 reviews
Search TAP AIR PORTUGAL flights
LATAM AirlinesPriceFrom £742Free CancellationRating
7.4
1,922 reviews
Search LATAM Airlines flights
Virgin AtlanticPriceFrom £1,178Free CancellationRating
7.4
688 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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Airlines are sorted and displayed according to clicks in the past 7 days on momondo
LATAM Airlines
TAP AIR PORTUGAL
Virgin Atlantic