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Cheap flights from London Heathrow Airport to Porto Alegre from £436

LHR — POA
22 Oct — 29 Oct1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Heathrow to Porto Alegre

Enter your travel dates to find the best prices.

Cheapest flights from Heathrow to Porto Alegre

Mon 16/1118:30 -
1 stop28h 10m
Tue 1/1221:15 -
1 stop22h 25m
Deal found 21/9£738
Thu 12/1106:00 -
1 stop16h 20m
Thu 26/1101:30 -
1 stop17h 05m
Deal found 22/9£741
Thu 12/1106:00 -
1 stop16h 20m
Fri 27/1105:10 -
2 stops33h 25m
Deal found 22/9£771
Thu 12/1106:00 -
1 stop16h 20m
Sat 28/1121:10 -
1 stop21h 25m
Deal found 21/9£772
Fri 13/1113:40 -
1 stop33h 00m
Sat 28/1121:10 -
1 stop21h 25m
Deal found 21/9£777
Fri 13/1120:50 -
2 stops25h 50m
Sat 28/1121:10 -
1 stop15h 20m
Deal found 21/9£792
Mon 16/1118:30 -
1 stop28h 10m
Tue 1/1210:40 -
2 stops23h 00m
Deal found 21/9£795
Fri 6/1120:50 -
2 stops25h 50m
Thu 12/1101:30 -
1 stop17h 05m
Deal found 22/9£797
Fri 6/1118:30 -
1 stop28h 10m
Thu 12/1101:30 -
1 stop18h 10m
Deal found 22/9£827
Fri 6/1118:30 -
1 stop28h 10m
Thu 19/1101:30 -
1 stop30h 55m
Deal found 20/9£854

Find flight deals from Heathrow to Porto Alegre

Round-trip from

£738

One-way from

£436

Popular in

July

Cheapest in

April

Average price

£917
TAP AIR PORTUGAL
  • TAP AIR PORTUGAL
  • 16/11-1/12
  • 2 total stops
  • 50h 35m total
  • London to Porto Alegre
Search Deals
4/3-31/12
  • 4/3-31/12
  • 2 total stops
  • 38h 55m total
  • London to Porto Alegre
Search Deals
Highest demand for flights based on searches. 19% potential increase in price (£195 potential increase over avg. return price).
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Cheapest flight prices on average. 3% potential price decrease (£30 potential savings vs. average return price).
Search Deals
Average for round-trip flights in September 2026
Search Deals

Cheapflights Fare Finder

 
Use the filters below to find and compare flights from London Heathrow Airport to Porto Alegre that are best for you.

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Route

Depart

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Price

Cheapest return flight

LondonPorto Alegre

LHR London Heathrow - POA Porto Alegre Salgado Filho

LHRPOA

London Heathrow

Sun 6/12

20:50-00:15

3 stops30h 25m

Porto Alegre Salgado Filho

Wed 31/12

00:00-04:00

Nonstop0h 00m

£487

LondonPorto Alegre

LHR London Heathrow - POA Porto Alegre Salgado Filho

LHRPOA

London Heathrow

Mon 7/12

09:55-07:55

3 stops49h 00m

Porto Alegre Salgado Filho

Wed 31/12

00:00-04:00

Nonstop0h 00m

£525

LondonPorto Alegre

LHR London Heathrow - POA Porto Alegre Salgado Filho

LHRPOA

London Heathrow

Wed 9/12

06:00-00:15

2 stops21h 15m

Porto Alegre Salgado Filho

Wed 31/12

00:00-04:00

Nonstop0h 00m

£587

LondonPorto Alegre

LHR London Heathrow - POA Porto Alegre Salgado Filho

LHRPOA

London Heathrow

Tue 8/12

06:00-00:15

2 stops21h 15m

Porto Alegre Salgado Filho

Wed 31/12

00:00-04:00

Nonstop0h 00m

£621

LondonPorto Alegre

LHR London Heathrow - POA Porto Alegre Salgado Filho

LHRPOA

London Heathrow

Sun 18/10

08:00-00:15

2 stops44h 15m

Porto Alegre Salgado Filho

Wed 31/12

00:00-04:00

Nonstop0h 00m

£648
Fastest return journey

LondonPorto Alegre

LHR London Heathrow - POA Porto Alegre Salgado Filho

LHRPOA

London Heathrow

Thu 12/11

06:00-19:20

1 stop16h 20m

Porto Alegre Salgado Filho

Wed 31/12

00:00-04:00

Nonstop0h 00m

£650

LondonPorto Alegre

LHR London Heathrow - POA Porto Alegre Salgado Filho

LHRPOA

London Heathrow

Sat 12/12

06:00-00:15

2 stops21h 15m

Porto Alegre Salgado Filho

Wed 31/12

00:00-04:00

Nonstop0h 00m

£733

LondonPorto Alegre

LHR London Heathrow - POA Porto Alegre Salgado Filho

LHRPOA

London Heathrow

Wed 9/12

18:30-19:20

1 stop27h 50m

Porto Alegre Salgado Filho

Wed 31/12

00:00-04:00

Nonstop0h 00m

£777

LondonPorto Alegre

LHR London Heathrow - POA Porto Alegre Salgado Filho

LHRPOA

London Heathrow

Mon 1/3

14:25-12:15

3 stops24h 50m

Porto Alegre Salgado Filho

Thu 10/6

13:00-13:00

2 stops20h 00m

£959

LondonPorto Alegre

LHR London Heathrow - POA Porto Alegre Salgado Filho

LHRPOA

London Heathrow

Mon 23/11

22:40-21:30

2 stops25h 50m

Porto Alegre Salgado Filho

Fri 27/11

20:00-16:20

2 stops41h 20m

£964

Flights are sorted by cheapest return flights first.

Deals found on 19/9

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

Best time to book a flight from Heathrow to Porto Alegre

Have a flexible travel schedule? Discover the best time to fly to Porto Alegre from Heathrow with our price prediction graph.
Estimated return price

Cheapflights Insights

Everything you need to know about your flight from London Heathrow Airport to Porto Alegre

What is the cheapest month to book a flight from London Heathrow Airport to Porto Alegre?

Currently, April is the cheapest month in which you can book a flight from London Heathrow Airport to Porto Alegre (average of £773). Flying from London Heathrow Airport to Porto Alegre in July is currently the most expensive (average of £1,482). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

How much does it cost for a return flight from London Heathrow Airport to Porto Alegre?

Airfare is below average for this route at the moment.

London Heathrow Airport to Porto Alegre flights typically cost between £916 and £1,176 in November.
The cheapest return price found within the last 5 days was £738 on TAP AIR PORTUGAL (16 Nov–1 Dec).

Reviews of airlines servicing Porto Alegre

Check out reviews from past customers who have flown with LATAM Airlines,Virgin Atlantic, andTAP AIR PORTUGAL from London Heathrow Airport to Porto Alegre to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
LATAM Airlines
7.4
Good
1,982 reviews
Check prices

Comfort

7.3

Overall

7.4

Boarding

7.5

Entertainment

7.0

Crew

8.0

Food

6.7

Reviews

1 / 20
8.0
Excellent

Noah,Aug 2026

JFK - GRU

This was fine, the flight crew and food were good.
LATAM Airlines
7.4
Good
1,982 reviews
LATAM Airlines
7.4
Good
1,982 reviews
Check prices

Comfort

7.3

Overall

7.4

Boarding

7.5

Entertainment

7.0

Crew

8.0

Food

6.7

Reviews

1 / 20
8.0
Excellent

Noah,Aug 2026

JFK - GRU

This was fine, the flight crew and food were good.
Virgin Atlantic
7.4
Good
694 reviews
LATAM Airlines
7.4
Good
1,982 reviews
Check prices

Comfort

7.3

Overall

7.4

Boarding

7.5

Entertainment

7.0

Crew

8.0

Food

6.7

Reviews

1 / 20
8.0
Excellent

Noah,Aug 2026

JFK - GRU

This was fine, the flight crew and food were good.
TAP AIR PORTUGAL
7.2
Good
2,377 reviews
LATAM Airlines
7.4
Good
1,982 reviews
Check prices

Comfort

7.3

Overall

7.4

Boarding

7.5

Entertainment

7.0

Crew

8.0

Food

6.7

Reviews

1 / 20
8.0
Excellent

Noah,Aug 2026

JFK - GRU

This was fine, the flight crew and food were good.

Related info for your journey

  • What airport do you fly into for flights to Porto Alegre from London Heathrow?

    Porto Alegre Salgado Filho (POA) is the airport you will fly into if you book a flight from London Heathrow to Porto Alegre. You should not have trouble finding flights to Salgado Filho from London Heathrow; the airport handles an average of 0 inbound flights from London Heathrow per day. You should also have plenty of airline options to choose from since 3 airlines have flights to the Porto Alegre airport from London Heathrow. It is only a 4.0 mi journey from Salgado Filho (POA) to Porto Alegre’s city center.

  • How long is the flight from London Heathrow Airport to Porto Alegre?

    For as low as £959, SWISS can have you in Porto Alegre from London Heathrow Airport in 24h 50m. The distance between London Heathrow Airport and Porto Alegre is about 6410 mi. Both multi-stop and direct flights can be found to your destination and back.

  • What are the cheapest airlines flying from London Heathrow Airport to Porto Alegre round-trip?

    Our cheapest airline available from London Heathrow Airport to Porto Alegre is LATAM Airlines. Our recent data shows that you can find tickets from as low as £754 on this airline. Additional options worth looking into are TAP AIR PORTUGAL and Virgin Atlantic, starting at £770 and £1,150 round-trip. You may be able to fly from London Heathrow Airport to Porto Alegre for 28% less than the average price by searching for these airlines.

  • Can I find deals for flights from Heathrow to Porto Alegre that include hotel bookings?

    Yes. In addition to deals on Heathrow to Porto Alegre flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Heathrow to Porto Alegre?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Heathrow to Porto Alegre.

  • Can I find deals for business class flights from Heathrow to Porto Alegre?

    Yes. Cheapflights offers flight deals from Heathrow to Porto Alegre by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from London Heathrow Airport to Porto Alegre?

    Currently, April is the cheapest month in which you can book a flight from London Heathrow Airport to Porto Alegre (average of £773). Flying from London Heathrow Airport to Porto Alegre in July is currently the most expensive (average of £1,482). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for Heathrow to Porto Alegre

Gatwick to Porto Alegre flights

Top 3 airlines flying from Heathrow to Porto Alegre

AirlineCheapestAverageFlexibilityOn-time
LATAM AirlinesCheapest£754Average£1,120FlexibilityNo cancel feeOn-time81%
Search LATAM Airlines flights
TAP AIR PORTUGALCheapest£770Average£842FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
Virgin AtlanticCheapest£1,150Average£1,472FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights

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It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Heathrow to Porto Alegre.

Can Cheapflights find flights from Heathrow to Porto Alegre with no change fees?

Certainly. Search results for flights to Porto Alegre from Heathrow shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

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