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Cheap flights from London Heathrow Airport to Porto Alegre from £456

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 7/2. 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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Find the cheapest flights from London Heathrow Airport to Porto Alegre

Cheap return flights

Enter your travel dates to find the best prices.
Lufthansa Logo
06:30 - 13:15LHR-POA
33h 45m2 stops
Lufthansa Logo
12:30 - 09:45POA-LHR
18h 15m2 stops
£744Lufthansa
Find Deal
Sun, 30 Nov - Mon, 8 Dec
LATAM Airlines Logo
20:15 - 09:15LHR-POA
16h 00m1 stop
LATAM Airlines Logo
19:30 - 14:05POA-LHR
39h 35m2 stops
£801LATAM Airlines
Find Deal
Tue, 20 Jan - Tue, 3 Feb
Lufthansa Logo
20:15 - 00:25LHR-POA
31h 10m2 stops
Lufthansa Logo
17:55 - 15:50POA-LHR
18h 55m2 stops
£814Lufthansa
Find Deal
Thu, 19 Mar - Mon, 23 Mar
Multiple Airlines Logo
06:00 - 00:15LHR-POA
21h 15m2 stops
Multiple Airlines Logo
15:15 - 21:35POA-LHR
27h 20m2 stops
£842Multiple Airlines
Find Deal
Tue, 20 Jan - Tue, 3 Feb
LATAM Airlines Logo
20:15 - 09:15LHR-POA
16h 00m1 stop
LATAM Airlines Logo
20:10 - 14:05POA-LHR
14h 55m1 stop
£871LATAM Airlines
Find Deal
Tue, 20 Jan - Tue, 3 Feb
Multiple Airlines Logo
06:30 - 23:30LHR-POA
20h 00m2 stops
Multiple Airlines Logo
13:35 - 13:45POA-LHR
20h 10m2 stops
£1,019Multiple Airlines
Find Deal
Wed, 18 Mar - Fri, 17 Apr
TAP AIR PORTUGAL Logo
18:30 - 17:55LHR-POA
26h 25m1 stop
TAP AIR PORTUGAL Logo
10:40 - 12:45POA-LHR
22h 05m2 stops
£1,106TAP AIR PORTUGAL
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Wed, 18 Mar - Fri, 17 Apr
KLM Logo
17:50 - 23:30LHR-POA
32h 40m2 stops
KLM Logo
17:35 - 07:40POA-LHR
35h 05m2 stops
£1,170KLM
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Sat, 15 Nov - Sat, 29 Nov
American Airlines Logo
17:00 - 17:45LHR-POA
27h 45m2 stops
American Airlines Logo
19:20 - 08:35POA-LHR
34h 15m2 stops
£1,172American Airlines
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Mon, 12 Jan - Sat, 31 Jan
American Airlines Logo
11:15 - 17:10LHR-POA
32h 55m2 stops
American Airlines Logo
18:05 - 08:15POA-LHR
35h 10m2 stops
£1,264American Airlines
Find Deal
Mon, 8 Dec - Thu, 8 Jan

Lufthansa flights from London Heathrow Airport to Porto Alegre

Our best Lufthansa deals on London Heathrow Airport to Porto Alegre flight tickets
Lufthansa
30 Nov
LHR06:30London Heathrow
33h 45m
2 stops
POA13:15Porto Alegre Salgado Filho
8 Dec
POA12:30Porto Alegre Salgado Filho
18h 15m
2 stops
LHR09:45London Heathrow
£744
Find similar
Lufthansa
19 Mar
LHR20:15London Heathrow
31h 10m
2 stops
POA00:25Porto Alegre Salgado Filho
23 Mar
POA17:55Porto Alegre Salgado Filho
18h 55m
2 stops
LHR15:50London Heathrow
£814
Find similar
Lufthansa
19 Mar
LHR16:30London Heathrow
22h 05m
2 stops
POA11:35Porto Alegre Salgado Filho
23 Mar
POA14:55Porto Alegre Salgado Filho
21h 55m
2 stops
LHR15:50London Heathrow
£890
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
20 Jan
LHR20:15London Heathrow
16h 00m
1 stop
POA09:15Porto Alegre Salgado Filho
3 Feb
POA19:30Porto Alegre Salgado Filho
39h 35m
2 stops
LHR14:05London Heathrow
£801
Find similar
LATAM Airlines
20 Jan
LHR20:15London Heathrow
16h 00m
1 stop
POA09:15Porto Alegre Salgado Filho
3 Feb
POA20:10Porto Alegre Salgado Filho
14h 55m
1 stop
LHR14:05London Heathrow
£871
Find similar
LATAM Airlines
19 Mar
LHR20:15London Heathrow
18h 20m
1 stop
POA11:35Porto Alegre Salgado Filho
23 Mar
POA20:10Porto Alegre Salgado Filho
18h 05m
2 stops
LHR17:15London Heathrow
£897
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 31 October 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

Sun 30/11

06:30-13:15

2 stops33h 45m

Porto Alegre Salgado Filho

Mon 8/12

12:30-09:45

2 stops18h 15m

£744

LondonPorto Alegre

LHR - POA

LHRPOA

London Heathrow

Tue 20/1

20:15-09:15

1 stop16h 00m

Porto Alegre Salgado Filho

Tue 3/2

19:30-14:05

2 stops39h 35m

£801

LondonPorto Alegre

LHR - POA

LHRPOA

London Heathrow

Thu 19/3

20:15-00:25

2 stops31h 10m

Porto Alegre Salgado Filho

Mon 23/3

17:55-15:50

2 stops18h 55m

£814

LondonPorto Alegre

LHR - POA

LHRPOA

London Heathrow

Tue 20/1

06:00-00:15

2 stops21h 15m

Porto Alegre Salgado Filho

Tue 3/2

15:15-21:35

2 stops27h 20m

£842

LondonPorto Alegre

LHR - POA

LHRPOA

London Heathrow

Tue 20/1

20:15-09:15

1 stop16h 00m

Porto Alegre Salgado Filho

Tue 3/2

20:10-14:05

1 stop14h 55m

£871

LondonPorto Alegre

LHR - POA

LHRPOA

London Heathrow

Wed 18/3

06:30-23:30

2 stops20h 00m

Porto Alegre Salgado Filho

Fri 17/4

13:35-13:45

2 stops20h 10m

£1,019

LondonPorto Alegre

LHR - POA

LHRPOA

London Heathrow

Wed 18/3

18:30-17:55

1 stop26h 25m

Porto Alegre Salgado Filho

Fri 17/4

10:40-12:45

2 stops22h 05m

£1,106

LondonPorto Alegre

LHR - POA

LHRPOA

London Heathrow

Sat 15/11

17:50-23:30

2 stops32h 40m

Porto Alegre Salgado Filho

Sat 29/11

17:35-07:40

2 stops35h 05m

£1,170

LondonPorto Alegre

LHR - POA

LHRPOA

London Heathrow

Mon 12/1

17:00-17:45

2 stops27h 45m

Porto Alegre Salgado Filho

Sat 31/1

19:20-08:35

2 stops34h 15m

£1,172

LondonPorto Alegre

LHR - POA

LHRPOA

London Heathrow

Mon 8/12

11:15-17:10

2 stops32h 55m

Porto Alegre Salgado Filho

Thu 8/1

18:05-08:15

2 stops35h 10m

£1,264

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, March 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 £823. If you aren’t able to travel during the month of March, then book flights to Porto Alegre from London Heathrow Airport during February instead. Flights to Porto Alegre in February, while not as cheap as those in March, still average around £834.

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 £840. 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 £1,017.

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 £885. Flights to Porto Alegre are more costly in the evening, with an average ticket price of £951. 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 £1,000 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 £821 on momondo.

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

You could potentially save up to 35% 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.
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  • 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 £644Free CancellationRating
7.1
2,040 reviews
Search TAP AIR PORTUGAL flights
Air FrancePriceFrom £657Free CancellationRating
7.4
1,482 reviews
Search Air France flights
LATAM AirlinesPriceFrom £719Free CancellationRating
7.5
1,873 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.

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
British Airways
Ryanair
easyJet
Turkish Airlines
Qatar Airways
Emirates
Etihad Airways
Lufthansa
Virgin Atlantic
Pegasus Airlines
KLM
Air India