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Cheap flights from London Heathrow Airport to Porto Alegre from £383

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 15/11. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — POA
16 Jul — 23 Jul1
1 adult

Cheapflights Tip: The best prices from London Heathrow to Porto Alegre Salgado Filho are usually found in March or February, booked 13 days in advance, depart on a Monday or Thursday and return on a Monday

Cheap flight deals from Heathrow to Porto Alegre

Discover tips and strategies to find the most affordable flight options for your journey from Heathrow (LHR) to Porto Alegre (POA). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 11 July 2025.

Round-trip from

£686

One-way from

£383

Popular in

August

Cheapest in

March

Average price

£1,304
Air France
  • Air France
  • 18/9-17/10
  • 4 total stops
  • 41h 50m total
  • London to Porto Alegre
15/11
  • 15/11
  • 2 total stops
  • 49h 40m total
  • London to Porto Alegre
Highest demand for flights based on searches. 14% potential increase in price (£124 potential increase over avg. return price).
Cheapest flight prices on average. 3% potential price decrease (£24 potential savings vs. average return price).
Average for round-trip flights in July 2025

Find flight deals from Heathrow to Porto Alegre

Cheapest flights from Heathrow to Porto Alegre
Explore the most affordable flight options available from Heathrow to Porto Alegre. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 11 July 2025.

Thu 18/906:30LHR - POA
2 stops22h 25mMultiple Airlines
Fri 17/1011:05POA - LHR
2 stops19h 25mMultiple Airlines
Deal found 9/7£686
Thu 18/906:15LHR - POA
2 stops22h 40mAir France
Fri 17/1011:05POA - LHR
2 stops19h 25mAir France
Deal found 10/7£715
Mon 15/916:30LHR - POA
2 stops20h 50mLufthansa
Mon 20/1014:35POA - LHR
2 stops21h 05mLufthansa
Deal found 10/7£725
Thu 18/921:20LHR - POA
1 stop16h 00mLATAM Airlines
Fri 17/1020:00POA - LHR
1 stop15h 05mLATAM Airlines
Deal found 9/7£798
Thu 18/908:40LHR - POA
2 stops20h 15mKLM
Sat 18/1013:35POA - LHR
2 stops22h 40mKLM
Deal found 10/7£869
Sun 21/912:15LHR - POA
2 stops29h 25mUnited Airlines
Mon 20/1014:40POA - LHR
2 stops41h 05mUnited Airlines
Deal found 10/7£890
Wed 17/913:45LHR - POA
2 stops23h 35mSWISS
Wed 15/1014:35POA - LHR
2 stops37h 20mSWISS
Deal found 10/7£901
Mon 15/918:45LHR - POA
1 stop31h 00mTAP AIR PORTUGAL
Sat 18/1001:40POA - LHR
1 stop28h 40mTAP AIR PORTUGAL
Deal found 10/7£922

Cheapflights Fare Finder

Customise your flight search to find flights from Heathrow 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, Cheapflights users made 858,174 searches. Data last updated 11 July 2025.
Use the filters below to find and compare flights from London Heathrow Airport to Porto Alegre that are best for you.

Fly from

Heathrow

Fly to

Porto Alegre

Route

Depart

Return

Price

LondonPorto Alegre

LHR - POA

LHRPOA

London Heathrow

Thu 18/9

06:30-00:55

2 stops22h 25m

Porto Alegre Salgado Filho

Fri 17/10

11:05-10:30

2 stops19h 25m

£686

LondonPorto Alegre

LHR - POA

LHRPOA

London Heathrow

Thu 18/9

06:15-00:55

2 stops22h 40m

Porto Alegre Salgado Filho

Fri 17/10

11:05-10:30

2 stops19h 25m

£715

LondonPorto Alegre

LHR - POA

LHRPOA

London Heathrow

Mon 15/9

18:30-09:20

2 stops18h 50m

Porto Alegre Salgado Filho

Fri 17/10

14:35-18:40

2 stops24h 05m

£725

LondonPorto Alegre

LHR - POA

LHRPOA

London Heathrow

Thu 18/9

21:20-09:20

1 stop16h 00m

Porto Alegre Salgado Filho

Fri 17/10

20:00-15:05

1 stop15h 05m

£798

LondonPorto Alegre

LHR - POA

LHRPOA

London Heathrow

Thu 18/9

08:40-00:55

2 stops20h 15m

Porto Alegre Salgado Filho

Sat 18/10

13:35-16:15

2 stops22h 40m

£869

LondonPorto Alegre

LHR - POA

LHRPOA

London Heathrow

Sun 21/9

12:15-13:40

2 stops29h 25m

Porto Alegre Salgado Filho

Mon 20/10

14:40-11:45

2 stops41h 05m

£890

LondonPorto Alegre

LHR - POA

LHRPOA

London Heathrow

Wed 17/9

13:45-09:20

2 stops23h 35m

Porto Alegre Salgado Filho

Wed 15/10

14:35-07:55

2 stops37h 20m

£901

LondonPorto Alegre

LHR - POA

LHRPOA

London Heathrow

Mon 15/9

19:50-21:45

1 stop29h 55m

Porto Alegre Salgado Filho

Tue 14/10

00:15-22:55

1 stop18h 40m

£922

LondonPorto Alegre

LHR - POA

LHRPOA

London Heathrow

Sat 15/11

19:40-18:20

2 stops49h 40m

£383

LondonPorto Alegre

LHR - POA

LHRPOA

London Heathrow

Wed 19/11

09:00-00:40

2 stops18h 40m

£609

Flights are sorted by cheapest return flights first.

Deals found on 9/7

Showing 1-10 of 12 results
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
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

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

How far ahead should I book a flight from London Heathrow Airport to Porto Alegre?

Use this chart to determine the optimal time to book a return flight from Heathrow to Porto Alegre. Price data was last updated on 27 June 2025.

The price you pay for your flight from London Heathrow Airport to Porto Alegre may vary depending on when you book. For the best chance of a lower fare, look to book 13 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest time of day to fly from LHR to POA?

Find hourly flight availability from Heathrow to Porto Alegre. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 11 July 2025.

Unlike at midday, when flights are generally more expensive, you can save up to 31% on flights from London Heathrow Airport to Porto Alegre by exploring options for tickets in the morning.

Reviews of airlines servicing Porto Alegre

Get insights into the airlines that provide service to Porto Alegre. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Porto Alegre. Reviews last updated 11 July 2025.
Check out reviews from past customers who have flown with KLM, Air France, andLATAM Airlines 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.

Crew

8.4

Boarding

7.8

Overall

7.8

Food

7.3

Comfort

7.7

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.

Crew

8.4

Boarding

7.8

Overall

7.8

Food

7.3

Comfort

7.7

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.

Crew

8.4

Boarding

7.8

Overall

7.8

Food

7.3

Comfort

7.7

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.

Crew

8.4

Boarding

7.8

Overall

7.8

Food

7.3

Comfort

7.7

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.

Crew

8.4

Boarding

7.8

Overall

7.8

Food

7.3

Comfort

7.7

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.

Crew

8.4

Boarding

7.8

Overall

7.8

Food

7.3

Comfort

7.7

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.

Related info for your journey

Find useful and relevant information for your journey from Heathrow to Porto Alegre. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
  • 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.

  • 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 Air France. Our recent data shows that you can find tickets from as low as £715 on this airline. Additional options worth looking into are Lufthansa and LATAM Airlines, starting at £725 and £798 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.

  • What are the cheapest airlines to fly from London Heathrow Airport to Porto Alegre one-way?

    One-way options have recently been found by users for as low as £609 on Air France. Other airlines that offer cheap prices include TAP AIR PORTUGAL from £619 and LATAM Airlines from £681 one-way.

  • 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.

See more FAQs

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Alternative routes for Heathrow to Porto Alegre

See prices for flight routes from nearby airports that may be better suited for you.

Top 3 airlines flying from Heathrow to Porto Alegre

Discover the top 3 airlines that operate flights from Heathrow to Porto Alegre. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 11 July 2025.
AirlineCheapestAverageFlexibilityOn-time
TAP AIR PORTUGALCheapest£624Average£899FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
Air FranceCheapest£637Average£745FlexibilityNo cancel feeOn-time77%
Search Air France flights
LATAM AirlinesCheapest£696Average£908FlexibilityNo cancel feeOn-time81%
Search LATAM Airlines flights

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How does Cheapflights help users find flights from Heathrow to Porto Alegre?

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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.

Can Cheapflights notify me if prices for flights from Heathrow to Porto Alegre become cheaper?

Of course! You can now track prices for flights from Heathrow to Porto Alegre and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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