Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from London Heathrow Airport to Porto Alegre from £435

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 25/2. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Discover deals from 900+ travel sites with momondo.

Voted winner of Europe's Best Travel App 2023
Travel Warning: Due to flooding, the airport may be currently closed. Check local travel advisories before booking.

Save money when you book flights with momondo

Big names, great deals

Big names, great deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customise your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from London Heathrow Airport to Porto Alegre

Cheap return flights

Enter your travel dates to find the best prices.
LATAM Airlines Logo
06:55 - 00:40
LHR
-
POA
20h 45m2 stops
LATAM Airlines Logo
13:00 - 14:05
POA
-
LHR
22h 05m1 stop
£828LATAM Airlines
Tue, 3 Feb - Tue, 10 Feb
LATAM Airlines Logo
20:15 - 23:00
LHR
-
POA
29h 45m2 stops
LATAM Airlines Logo
20:10 - 16:35
POA
-
LHR
17h 25m2 stops
£833LATAM Airlines
Tue, 3 Feb - Tue, 10 Feb
TAP AIR PORTUGAL Logo
06:00 - 19:40
LHR
-
POA
16h 40m1 stop
TAP AIR PORTUGAL Logo
00:15 - 22:55
POA
-
LHR
18h 40m1 stop
£840TAP AIR PORTUGAL
Tue, 24 Mar - Tue, 21 Apr
LATAM Airlines Logo
06:55 - 00:40
LHR
-
POA
20h 45m2 stops
LATAM Airlines Logo
20:10 - 17:15
POA
-
LHR
18h 05m2 stops
£846LATAM Airlines
Tue, 3 Feb - Tue, 10 Feb
Multiple Airlines Logo
22:35 - 23:40
LHR
-
POA
28h 05m2 stops
Multiple Airlines Logo
12:50 - 16:10
POA
-
LHR
24h 20m2 stops
£852Multiple Airlines
Tue, 24 Feb - Sun, 1 Mar
Multiple Airlines Logo
21:15 - 10:55
LHR
-
POA
16h 40m1 stop
Multiple Airlines Logo
11:40 - 06:45
POA
-
LHR
16h 05m1 stop
£857Multiple Airlines
Mon, 2 Mar - Thu, 19 Mar
Multiple Airlines Logo
22:35 - 22:45
LHR
-
POA
27h 10m2 stops
Multiple Airlines Logo
11:40 - 16:10
POA
-
LHR
25h 30m2 stops
£859Multiple Airlines
Mon, 2 Mar - Thu, 19 Mar
TAP AIR PORTUGAL Logo
18:30 - 19:40
LHR
-
POA
28h 10m1 stop
TAP AIR PORTUGAL Logo
11:00 - 11:25
POA
-
LHR
21h 25m2 stops
£866TAP AIR PORTUGAL
Mon, 2 Mar - Thu, 19 Mar
Turkish Airlines Logo
13:15 - 09:15
LHR
-
POA
24h 00m2 stops
Turkish Airlines Logo
18:25 - 16:55
POA
-
LHR
42h 30m2 stops
£867Turkish Airlines
Mon, 4 May - Thu, 21 May
KLM Logo
06:30 - 00:45
LHR
-
POA
21h 15m2 stops
KLM Logo
18:30 - 17:35
POA
-
LHR
19h 05m2 stops
£870KLM
Tue, 24 Mar - Wed, 22 Apr

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
3 Feb
LHR06:55London Heathrow
20h 45m
2 stops
POA00:40Porto Alegre Salgado Filho
10 Feb
POA13:00Porto Alegre Salgado Filho
22h 05m
1 stop
LHR14:05London Heathrow
£828
Find similar
LATAM Airlines
3 Feb
LHR20:15London Heathrow
29h 45m
2 stops
POA23:00Porto Alegre Salgado Filho
10 Feb
POA20:10Porto Alegre Salgado Filho
17h 25m
2 stops
LHR16:35London Heathrow
£833
Find similar
LATAM Airlines
3 Feb
LHR06:55London Heathrow
20h 45m
2 stops
POA00:40Porto Alegre Salgado Filho
10 Feb
POA20:10Porto Alegre Salgado Filho
18h 05m
2 stops
LHR17:15London Heathrow
£846
Find similar

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
24 Mar
LHR06:00London Heathrow
16h 40m
1 stop
POA19:40Porto Alegre Salgado Filho
21 Apr
POA00:15Porto Alegre Salgado Filho
18h 40m
1 stop
LHR22:55London Heathrow
£840
Find similar
TAP AIR PORTUGAL
2 Mar
LHR18:30London Heathrow
28h 10m
1 stop
POA19:40Porto Alegre Salgado Filho
19 Mar
POA11:00Porto Alegre Salgado Filho
21h 25m
2 stops
LHR11:25London Heathrow
£866
Find similar
TAP AIR PORTUGAL
4 Mar
LHR18:30London Heathrow
26h 25m
1 stop
POA17:55Porto Alegre Salgado Filho
9 Apr
POA11:00Porto Alegre Salgado Filho
20h 00m
2 stops
LHR11:00London Heathrow
£871
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 18 December 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

Tue 3/2

06:55-00:40

2 stops20h 45m

Porto Alegre Salgado Filho

Tue 10/2

13:00-14:05

1 stop22h 05m

£828

LondonPorto Alegre

LHR - POA

LHRPOA

London Heathrow

Tue 3/2

20:15-23:00

2 stops29h 45m

Porto Alegre Salgado Filho

Tue 10/2

20:10-16:35

2 stops17h 25m

£833

LondonPorto Alegre

LHR - POA

LHRPOA

London Heathrow

Tue 24/3

06:00-19:40

1 stop16h 40m

Porto Alegre Salgado Filho

Tue 21/4

00:15-22:55

1 stop18h 40m

£840

LondonPorto Alegre

LHR - POA

LHRPOA

London Heathrow

Tue 3/2

06:55-00:40

2 stops20h 45m

Porto Alegre Salgado Filho

Tue 10/2

20:10-17:15

2 stops18h 05m

£846

LondonPorto Alegre

LHR - POA

LHRPOA

London Heathrow

Tue 24/2

22:35-23:40

2 stops28h 05m

Porto Alegre Salgado Filho

Sun 1/3

12:50-16:10

2 stops24h 20m

£852

LondonPorto Alegre

LHR - POA

LHRPOA

London Heathrow

Mon 2/3

21:15-10:55

1 stop16h 40m

Porto Alegre Salgado Filho

Thu 19/3

11:40-06:45

1 stop16h 05m

£857

LondonPorto Alegre

LHR - POA

LHRPOA

London Heathrow

Mon 2/3

22:35-22:45

2 stops27h 10m

Porto Alegre Salgado Filho

Thu 19/3

11:40-16:10

2 stops25h 30m

£859

LondonPorto Alegre

LHR - POA

LHRPOA

London Heathrow

Mon 2/3

18:30-19:40

1 stop28h 10m

Porto Alegre Salgado Filho

Thu 19/3

11:00-11:25

2 stops21h 25m

£866

LondonPorto Alegre

LHR - POA

LHRPOA

London Heathrow

Mon 4/5

13:15-09:15

2 stops24h 00m

Porto Alegre Salgado Filho

Thu 21/5

18:25-16:55

2 stops42h 30m

£867

LondonPorto Alegre

LHR - POA

LHRPOA

London Heathrow

Tue 24/3

06:30-00:45

2 stops21h 15m

Porto Alegre Salgado Filho

Wed 22/4

18:30-17:35

2 stops19h 05m

£870

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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 £740. 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.

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 £828. 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 £1,002.

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 £872. Flights to Porto Alegre are more costly in the evening, with an average ticket price of £937. 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 £941 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 £717 on momondo.

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

20h 00m

Direct flights

None
The fastest flight from London Heathrow Airport to Porto Alegre takes 20h 00m
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. 20h 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 £635Free CancellationRating
7.2
2,092 reviews
Search TAP AIR PORTUGAL flights
Air FrancePriceFrom £648Free CancellationRating
7.4
1,508 reviews
Search Air France flights
LATAM AirlinesPriceFrom £707Free CancellationRating
7.5
1,893 reviews
Search LATAM Airlines flights
Virgin AtlanticPriceFrom £1,126Free CancellationRating
7.5
675 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

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Sat 17/1
Sat 24/1
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Brazil

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
Air France