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Cheap flights from London Heathrow Airport to Porto Alegre from £434

LHR — POA
11 Dec — 18 Dec1
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

Sat 21/1106:20 -
2 stops28h 50m
Tue 1/1217:25 -
2 stops17h 20m
Deal found 10/11£787
Fri 20/1106:30 -
2 stops21h 00m
Tue 1/1217:25 -
2 stops17h 25m
Deal found 10/11£795
Mon 16/1118:30 -
1 stop28h 10m
Mon 23/1116:10 -
1 stop18h 55m
Deal found 8/11£801
Tue 8/1206:30 -
2 stops21h 00m
Tue 9/211:50 -
2 stops23h 00m
Deal found 7/11£827
Tue 10/1107:25 -
2 stops36h 50m
Tue 17/1120:00 -
1 stop15h 05m
Deal found 9/11£878
Fri 20/1120:15 -
2 stops29h 30m
Tue 1/1220:00 -
1 stop15h 25m
Deal found 10/11£880
Sat 21/1120:15 -
1 stop15h 15m
Mon 30/1111:30 -
2 stops23h 35m
Deal found 10/11£890
Wed 18/1118:30 -
1 stop27h 50m
Wed 2/1220:00 -
1 stop15h 25m
Deal found 10/11£893
Tue 24/1120:15 -
2 stops29h 30m
Sat 28/1112:25 -
2 stops22h 40m
Deal found 6/11£896
Tue 24/1120:15 -
1 stop19h 00m
Thu 3/1213:05 -
1 stop22h 20m
Deal found 10/11£896

Find flight deals from Heathrow to Porto Alegre

Round-trip from

£787

One-way from

£434

Popular in

July

Cheapest in

April

Average price

£876
Air France
  • Air France
  • 21/11-1/12
  • 4 total stops
  • 46h 10m total
  • London to Porto Alegre
Search Deals
2/12-31/12
  • 2/12-31/12
  • 3 total stops
  • 49h 30m total
  • London to Porto Alegre
Search Deals
Highest demand for flights based on searches. 20% potential increase in price (£198 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£30 potential savings vs. average return price).
Search Deals
Average for round-trip flights in November 2026
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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

Return

Price

Cheapest return flight
Fastest return journey

LondonPorto Alegre

LHR London Heathrow - POA Porto Alegre Salgado Filho

LHRPOA

London Heathrow

Thu 19/11

06:00-19:20

1 stop16h 20m

Porto Alegre Salgado Filho

Wed 31/12

00:00-04:00

Nonstop0h 00m

£624

LondonPorto Alegre

LHR London Heathrow - POA Porto Alegre Salgado Filho

LHRPOA

London Heathrow

Wed 2/12

06:00-00:30

3 stops21h 30m

Porto Alegre Salgado Filho

Wed 31/12

00:00-04:00

Nonstop0h 00m

£635

LondonPorto Alegre

LHR London Heathrow - POA Porto Alegre Salgado Filho

LHRPOA

London Heathrow

Wed 18/11

16:30-10:00

2 stops20h 30m

Porto Alegre Salgado Filho

Wed 31/12

00:00-04:00

Nonstop0h 00m

£656

LondonPorto Alegre

LHR London Heathrow - POA Porto Alegre Salgado Filho

LHRPOA

London Heathrow

Mon 7/12

18:30-19:40

1 stop28h 10m

Porto Alegre Salgado Filho

Wed 31/12

00:00-04:00

Nonstop0h 00m

£660

LondonPorto Alegre

LHR London Heathrow - POA Porto Alegre Salgado Filho

LHRPOA

London Heathrow

Wed 2/12

08:15-19:20

1 stop38h 05m

Porto Alegre Salgado Filho

Wed 31/12

00:00-04:00

Nonstop0h 00m

£684

LondonPorto Alegre

LHR London Heathrow - POA Porto Alegre Salgado Filho

LHRPOA

London Heathrow

Thu 4/2

06:00-19:20

1 stop16h 20m

Porto Alegre Salgado Filho

Wed 31/12

00:00-04:00

Nonstop0h 00m

£705

LondonPorto Alegre

LHR London Heathrow - POA Porto Alegre Salgado Filho

LHRPOA

London Heathrow

Tue 1/12

06:00-00:30

3 stops21h 30m

Porto Alegre Salgado Filho

Wed 31/12

00:00-04:00

Nonstop0h 00m

£706

LondonPorto Alegre

LHR London Heathrow - POA Porto Alegre Salgado Filho

LHRPOA

London Heathrow

Mon 18/1

06:15-00:10

2 stops20h 55m

Porto Alegre Salgado Filho

Mon 8/2

20:05-14:25

1 stop15h 20m

£941

LondonPorto Alegre

LHR London Heathrow - POA Porto Alegre Salgado Filho

LHRPOA

London Heathrow

Mon 30/11

07:00-12:20

3 stops32h 20m

Porto Alegre Salgado Filho

Wed 31/12

00:00-04:00

Nonstop0h 00m

£950

LondonPorto Alegre

LHR London Heathrow - POA Porto Alegre Salgado Filho

LHRPOA

London Heathrow

Thu 4/2

07:00-12:15

3 stops32h 15m

Porto Alegre Salgado Filho

Wed 31/12

00:00-04:00

Nonstop0h 00m

£953

Flights are sorted by cheapest return flights first.

Deals found on 10/11

Showing 1-10 of 17 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 £777). Flying from London Heathrow Airport to Porto Alegre in July is currently the most expensive (average of £1,490). 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 typical for this route at the moment.

London Heathrow Airport to Porto Alegre flights typically cost between £760 and £1,415 in November.
The cheapest return price found within the last 5 days was £787 on Air France (21 Nov–1 Dec).

Reviews of airlines servicing Porto Alegre

Check out reviews from past customers who have flown with Virgin Atlantic,LATAM Airlines, 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.
Virgin Atlantic
7.5
Good
698 reviews
Check prices

Boarding

7.7

Overall

7.5

Comfort

7.3

Crew

8.1

Food

6.9

Entertainment

7.5

Reviews

1 / 20
10.0
Excellent

Edwin,May 2026

LHR - LAX

First time flying with Virgin. It was everything I hoped it would be.
Virgin Atlantic
7.5
Good
698 reviews
Virgin Atlantic
7.5
Good
698 reviews
Check prices

Boarding

7.7

Overall

7.5

Comfort

7.3

Crew

8.1

Food

6.9

Entertainment

7.5

Reviews

1 / 20
10.0
Excellent

Edwin,May 2026

LHR - LAX

First time flying with Virgin. It was everything I hoped it would be.
LATAM Airlines
7.4
Good
1,970 reviews
Virgin Atlantic
7.5
Good
698 reviews
Check prices

Boarding

7.7

Overall

7.5

Comfort

7.3

Crew

8.1

Food

6.9

Entertainment

7.5

Reviews

1 / 20
10.0
Excellent

Edwin,May 2026

LHR - LAX

First time flying with Virgin. It was everything I hoped it would be.
TAP AIR PORTUGAL
7.2
Good
2,398 reviews
Virgin Atlantic
7.5
Good
698 reviews
Check prices

Boarding

7.7

Overall

7.5

Comfort

7.3

Crew

8.1

Food

6.9

Entertainment

7.5

Reviews

1 / 20
10.0
Excellent

Edwin,May 2026

LHR - LAX

First time flying with Virgin. It was everything I hoped it would be.

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 £956, LATAM Airlines can have you in Porto Alegre from London Heathrow Airport in 19h 15m. 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 £756 on this airline. Additional options worth looking into are TAP AIR PORTUGAL and Virgin Atlantic, starting at £774 and £1,156 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 £777). Flying from London Heathrow Airport to Porto Alegre in July is currently the most expensive (average of £1,490). 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£756Average£1,112FlexibilityNo cancel feeOn-time81%
Search LATAM Airlines flights
TAP AIR PORTUGALCheapest£774Average£836FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
Virgin AtlanticCheapest£1,156Average£1,416FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights

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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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