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Cheap flights from London Heathrow Airport to Porto Alegre from £486

LHR — POA
16 Oct — 23 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 23/1106:20 -
2 stops20h 30m
Sun 29/1111:00 -
2 stops17h 55m
Deal found 12/9£849
Sun 22/1106:20 -
2 stops20h 00m
Sun 29/1111:00 -
2 stops17h 55m
Deal found 12/9£853
Mon 23/1118:30 -
1 stop28h 10m
Sat 28/1121:10 -
1 stop17h 20m
Deal found 12/9£867
Mon 9/1120:15 -
1 stop16h 45m
Mon 23/1111:30 -
2 stops23h 35m
Deal found 12/9£887
Fri 30/1006:00 -
2 stops21h 15m
Fri 6/1114:05 -
2 stops24h 25m
Deal found 15/9£914
Thu 12/1110:45 -
2 stops26h 15m
Mon 1/218:00 -
1 stop17h 05m
Deal found 11/9£918
Mon 23/1118:30 -
2 stops21h 25m
Sun 29/1116:05 -
1 stop19h 00m
Deal found 12/9£920
Thu 12/1120:15 -
1 stop19h 00m
Mon 1/216:50 -
1 stop18h 15m
Deal found 11/9£921
Wed 28/1020:15 -
1 stop22h 05m
Wed 4/1111:30 -
2 stops23h 35m
Deal found 13/9£922
Sat 14/1106:00 -
1 stop16h 40m
Sat 5/1221:10 -
1 stop22h 30m
Deal found 13/9£929
Mon 9/1111:25 -
2 stops25h 35m
Mon 23/1111:30 -
2 stops23h 35m
Deal found 12/9£930

Find flight deals from Heathrow to Porto Alegre

Round-trip from

£849

One-way from

£486

Popular in

July

Cheapest in

April

Average price

£910
Air France
  • Air France
  • 23/11-29/11
  • 4 total stops
  • 38h 25m total
  • London to Porto Alegre
Search Deals
24/9-31/12
  • 24/9-31/12
  • 3 total stops
  • 45h 25m total
  • London to Porto Alegre
Search Deals
Highest demand for flights based on searches. 19% potential increase in price (£192 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
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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

LondonPorto Alegre

LHR London Heathrow - POA Porto Alegre Salgado Filho

LHRPOA

London Heathrow

Fri 4/12

06:00-00:15

2 stops21h 15m

Porto Alegre Salgado Filho

Wed 31/12

00:00-04:00

Nonstop0h 00m

£523

LondonPorto Alegre

LHR London Heathrow - POA Porto Alegre Salgado Filho

LHRPOA

London Heathrow

Fri 4/12

12:25-19:40

1 stop34h 15m

Porto Alegre Salgado Filho

Wed 31/12

00:00-04:00

Nonstop0h 00m

£668

LondonPorto Alegre

LHR London Heathrow - POA Porto Alegre Salgado Filho

LHRPOA

London Heathrow

Wed 7/10

19:50-23:05

2 stops31h 15m

Porto Alegre Salgado Filho

Wed 31/12

00:00-04:00

Nonstop0h 00m

£704

LondonPorto Alegre

LHR London Heathrow - POA Porto Alegre Salgado Filho

LHRPOA

London Heathrow

Thu 8/10

12:15-13:00

2 stops28h 45m

Porto Alegre Salgado Filho

Wed 31/12

00:00-04:00

Nonstop0h 00m

£740

LondonPorto Alegre

LHR London Heathrow - POA Porto Alegre Salgado Filho

LHRPOA

London Heathrow

Fri 9/10

16:40-10:40

2 stops46h 00m

Porto Alegre Salgado Filho

Wed 31/12

00:00-04:00

Nonstop0h 00m

£740

LondonPorto Alegre

LHR London Heathrow - POA Porto Alegre Salgado Filho

LHRPOA

London Heathrow

Sat 10/10

07:45-15:25

2 stops35h 40m

Porto Alegre Salgado Filho

Wed 31/12

00:00-04:00

Nonstop0h 00m

£740

LondonPorto Alegre

LHR London Heathrow - POA Porto Alegre Salgado Filho

LHRPOA

London Heathrow

Sat 3/10

13:45-14:15

3 stops28h 30m

Porto Alegre Salgado Filho

Wed 31/12

00:00-04:00

Nonstop0h 00m

£770

LondonPorto Alegre

LHR London Heathrow - POA Porto Alegre Salgado Filho

LHRPOA

London Heathrow

Sat 10/10

06:00-12:15

3 stops34h 15m

Porto Alegre Salgado Filho

Wed 31/12

00:00-04:00

Nonstop0h 00m

£813

LondonPorto Alegre

LHR London Heathrow - POA Porto Alegre Salgado Filho

LHRPOA

London Heathrow

Thu 24/9

21:20-01:15

1 stop31h 55m

Porto Alegre Salgado Filho

Wed 31/12

00:00-04:00

Nonstop0h 00m

£817
Fastest return journey

LondonPorto Alegre

LHR London Heathrow - POA Porto Alegre Salgado Filho

LHRPOA

London Heathrow

Thu 17/12

06:00-22:45

2 stops19h 45m

Porto Alegre Salgado Filho

Wed 31/12

00:00-04:00

Nonstop0h 00m

£876

Flights are sorted by cheapest return flights first.

Deals found on 12/9

Showing 1-10 of 19 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 £767). Flying from London Heathrow Airport to Porto Alegre in July is currently the most expensive (average of £1,471). 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 £802 and £994 in November.
The cheapest return price found within the last 5 days was £849 on Air France (23 Nov–29 Nov).

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
1,985 reviews
Check prices

Boarding

7.5

Entertainment

7.0

Comfort

7.3

Crew

8.0

Food

6.7

Overall

7.4

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
1,985 reviews
LATAM Airlines
7.4
Good
1,985 reviews
Check prices

Boarding

7.5

Entertainment

7.0

Comfort

7.3

Crew

8.0

Food

6.7

Overall

7.4

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
1,985 reviews
Check prices

Boarding

7.5

Entertainment

7.0

Comfort

7.3

Crew

8.0

Food

6.7

Overall

7.4

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
2,385 reviews
LATAM Airlines
7.4
Good
1,985 reviews
Check prices

Boarding

7.5

Entertainment

7.0

Comfort

7.3

Crew

8.0

Food

6.7

Overall

7.4

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 £966, Turkish Airlines can have you in Porto Alegre from London Heathrow Airport in 30h 35m. 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 £748 on this airline. Additional options worth looking into are TAP AIR PORTUGAL and Virgin Atlantic, starting at £764 and £1,141 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 £767). Flying from London Heathrow Airport to Porto Alegre in July is currently the most expensive (average of £1,471). 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£748Average£1,108FlexibilityNo cancel feeOn-time81%
Search LATAM Airlines flights
TAP AIR PORTUGALCheapest£764Average£835FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
Virgin AtlanticCheapest£1,141Average£1,461FlexibilityNo 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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