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Cheap flights from London Heathrow Airport to Porto Alegre from £439

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 12/11. 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

TAP AIR PORTUGAL Logo
06:00 - 19:20LHR-POA
16h 20m1 stop
TAP AIR PORTUGAL Logo
21:10 - 18:55POA-LHR
18h 45m1 stop
£706TAP AIR PORTUGAL
Find Deal
Thu, 13 Nov - Sat, 29 Nov
Logo
19:25 - 23:25LHR-POA
31h 00m2 stops
Logo
10:25 - 13:45POA-LHR
24h 20m2 stops
£778
Find Deal
Fri, 14 Nov - Sun, 30 Nov
LATAM Airlines Logo
09:10 - 00:40LHR-POA
18h 30m2 stops
LATAM Airlines Logo
19:30 - 14:05POA-LHR
39h 35m2 stops
£801LATAM Airlines
Find Deal
Sat, 31 Jan - Sat, 14 Feb
TAP AIR PORTUGAL Logo
06:00 - 19:40LHR-POA
16h 40m1 stop
TAP AIR PORTUGAL Logo
21:10 - 15:30POA-LHR
15h 20m1 stop
£821TAP AIR PORTUGAL
Find Deal
Sat, 8 Nov - Sat, 22 Nov
LATAM Airlines Logo
20:15 - 17:05LHR-POA
23h 50m1 stop
LATAM Airlines Logo
06:40 - 14:05POA-LHR
28h 25m1 stop
£843LATAM Airlines
Find Deal
Thu, 13 Nov - Sun, 30 Nov
KLM Logo
06:30 - 23:30LHR-POA
20h 00m2 stops
KLM Logo
17:45 - 13:50POA-LHR
17h 05m2 stops
£887KLM
Find Deal
Wed, 29 Oct - Wed, 5 Nov
Air Canada Logo
13:25 - 16:35LHR-POA
30h 10m2 stops
Air Canada Logo
15:25 - 07:10POA-LHR
36h 45m2 stops
£899Air Canada
Find Deal
Thu, 13 Nov - Mon, 1 Dec
Air Canada Logo
13:25 - 16:35LHR-POA
30h 10m2 stops
Air Canada Logo
11:15 - 07:10POA-LHR
40h 55m2 stops
£949Air Canada
Find Deal
Thu, 13 Nov - Sun, 30 Nov
Air France Logo
06:20 - 10:35LHR-POA
31h 15m2 stops
Air France Logo
19:20 - 13:45POA-LHR
39h 25m2 stops
£951Air France
Find Deal
Sat, 15 Nov - Sat, 29 Nov
KLM Logo
08:40 - 00:50LHR-POA
20h 10m2 stops
KLM Logo
17:05 - 17:35POA-LHR
20h 30m2 stops
£960KLM
Find Deal
Thu, 25 Sep - Sun, 5 Oct

American Airlines flights from London Heathrow Airport to Porto Alegre

Our best American Airlines deals on London Heathrow Airport to Porto Alegre flight tickets
American Airlines
16 Sept
LHR13:40London Heathrow
27h 45m
2 stops
POA13:25Porto Alegre Salgado Filho
14 Oct
POA13:55Porto Alegre Salgado Filho
27h 45m
2 stops
LHR21:40London Heathrow
£946
Find similar
American Airlines
7 Dec
LHR11:15London Heathrow
32h 10m
2 stops
POA16:25Porto Alegre Salgado Filho
11 Jan
POA17:55Porto Alegre Salgado Filho
35h 20m
2 stops
LHR08:15London Heathrow
£1,046
Find similar

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
18 Sept
LHR21:20London Heathrow
20h 30m
1 stop
POA13:50Porto Alegre Salgado Filho
17 Oct
POA14:45Porto Alegre Salgado Filho
20h 20m
1 stop
LHR15:05London Heathrow
£779
Find similar
LATAM Airlines
31 Jan
LHR09:10London Heathrow
18h 30m
2 stops
POA00:40Porto Alegre Salgado Filho
14 Feb
POA19:30Porto Alegre Salgado Filho
39h 35m
2 stops
LHR14:05London Heathrow
£801
Find similar
LATAM Airlines
13 Nov
LHR20:15London Heathrow
23h 50m
1 stop
POA17:05Porto Alegre Salgado Filho
30 Nov
POA06:40Porto Alegre Salgado Filho
28h 25m
1 stop
LHR14:05London Heathrow
£843
Find similar

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 16 September 2025.
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

LondonPorto Alegre

LHR - POA

LHRPOA

London Heathrow

Thu 13/11

06:00-19:20

1 stop16h 20m

Porto Alegre Salgado Filho

Sat 29/11

21:10-18:55

1 stop18h 45m

£706

LondonPorto Alegre

LHR - POA

LHRPOA

London Heathrow

Fri 14/11

19:25-23:25

2 stops31h 00m

Porto Alegre Salgado Filho

Sun 30/11

10:25-13:45

2 stops24h 20m

£778

LondonPorto Alegre

LHR - POA

LHRPOA

London Heathrow

Sat 31/1

09:10-00:40

2 stops18h 30m

Porto Alegre Salgado Filho

Sat 14/2

19:30-14:05

2 stops39h 35m

£801

LondonPorto Alegre

LHR - POA

LHRPOA

London Heathrow

Sat 8/11

06:00-19:40

1 stop16h 40m

Porto Alegre Salgado Filho

Sat 22/11

21:10-15:30

1 stop15h 20m

£821

LondonPorto Alegre

LHR - POA

LHRPOA

London Heathrow

Thu 13/11

20:15-17:05

1 stop23h 50m

Porto Alegre Salgado Filho

Sun 30/11

06:40-14:05

1 stop28h 25m

£843

LondonPorto Alegre

LHR - POA

LHRPOA

London Heathrow

Wed 29/10

06:30-23:30

2 stops20h 00m

Porto Alegre Salgado Filho

Wed 5/11

17:45-13:50

2 stops17h 05m

£887

LondonPorto Alegre

LHR - POA

LHRPOA

London Heathrow

Thu 13/11

13:25-16:35

2 stops30h 10m

Porto Alegre Salgado Filho

Mon 1/12

15:25-07:10

2 stops36h 45m

£899

LondonPorto Alegre

LHR - POA

LHRPOA

London Heathrow

Thu 13/11

13:25-16:35

2 stops30h 10m

Porto Alegre Salgado Filho

Sun 30/11

11:15-07:10

2 stops40h 55m

£949

LondonPorto Alegre

LHR - POA

LHRPOA

London Heathrow

Sat 15/11

06:20-10:35

2 stops31h 15m

Porto Alegre Salgado Filho

Sat 29/11

19:20-13:45

2 stops39h 25m

£951

LondonPorto Alegre

LHR - POA

LHRPOA

London Heathrow

Thu 25/9

08:40-00:50

2 stops20h 10m

Porto Alegre Salgado Filho

Sun 5/10

17:05-17:35

2 stops20h 30m

£960

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, February 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 £801. If you aren’t able to travel during the month of February, 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 February, still average around £801.

What is the cheapest day to depart on your flight to Porto Alegre?

On average, the least expensive day to fly to Porto Alegre from London Heathrow Airport is on a Thursday. momondo users have found tickets for Thursday departures for as low as £815. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Friday is the most expensive day to depart from London Heathrow Airport because it is more convenient for both business and leisure travellers. As a result, prices tend to be around £986.

What is the cheapest time of day to depart on your flight to Porto Alegre?

Our most recent data shows that the best time of day to fly to Porto Alegre is in the morning. Flights from London Heathrow Airport to Porto Alegre during this time can be as low as £858. Flights to Porto Alegre are more costly in the evening, with an average ticket price of £922. Departure times in the evening fall within the peak daily travel times, which is why tickets can be more expensive.

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 £978 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 £737 on momondo.

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

You could potentially save up to 13% 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

Direct flights

None
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. 16h 00m 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 £625Free CancellationRating
7.1
1,975 reviews
Search TAP AIR PORTUGAL flights
Air FrancePriceFrom £637Free CancellationRating
7.4
1,469 reviews
Search Air France flights
LATAM AirlinesPriceFrom £697Free CancellationRating
7.5
1,847 reviews
Search LATAM Airlines 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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Airlines are sorted and displayed according to clicks in the past 7 days on momondo
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Turkish Airlines
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KLM
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