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Cheap flights from London Heathrow Airport to Porto Alegre from £456

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 22/10. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — POA
5 May — 12 May1
1 adult

Cheapflights Tip: The best prices from London Heathrow to Porto Alegre Salgado Filho are usually found in September or March, 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 30 April 2025.

Round-trip from

£770

One-way from

£456

Popular in

December

Cheapest in

September

Average price

£916
LATAM Airlines
  • LATAM Airlines
  • 18/9-17/10
  • 2 total stops
  • 40h 40m total
  • London to Porto Alegre
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22/10
  • 22/10
  • 2 total stops
  • 19h 55m total
  • London to Porto Alegre
Search Deals
Highest demand for flights based on searches. 7% potential increase in price (£58 potential increase over avg. return price).
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Cheapest flight prices on average. 3% potential price decrease (£24 potential savings vs. average return price).
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Average for round-trip flights in April 2025
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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 30 April 2025.

Mon 3/1118:30LHR - POA
1 stop28h 10mTAP AIR PORTUGAL
Sat 15/1121:10POA - LHR
1 stop21h 25mTAP AIR PORTUGAL
Deal found 29/4£694
Mon 3/1107:35LHR - POA
2 stops32h 45mMultiple Airlines
Sun 16/1108:25POA - LHR
1 stop26h 40mMultiple Airlines
Deal found 29/4£722
Thu 18/921:20LHR - POA
1 stop18h 10mLATAM Airlines
Fri 17/1012:35POA - LHR
1 stop22h 30mLATAM Airlines
Deal found 29/4£770
Thu 18/912:00LHR - POA
2 stops26h 35mAmerican Airlines
Fri 17/1018:35POA - LHR
2 stops31h 45mAmerican Airlines
Deal found 29/4£856
Sat 10/509:00LHR - POA
2 stops28h 45mAir France
Sat 24/517:15POA - LHR
2 stops21h 20mAir France
Deal found 29/4£955
Fri 30/508:40LHR - POA
2 stops27h 25mKLM
Sat 7/613:35POA - LHR
2 stops24h 15mKLM
Deal found 29/4£966
Tue 10/618:40LHR - POA
2 stops18h 40mSWISS
Tue 17/614:35POA - LHR
3 stops23h 55mSWISS
Deal found 29/4£1,059
Wed 30/416:40LHR - POA
2 stops44h 45mTurkish Airlines
Sun 4/514:35POA - LHR
2 stops45h 25mTurkish Airlines
Deal found 29/4£1,260

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 30 April 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

21:20-11:30

1 stop18h 10m

Porto Alegre Salgado Filho

Fri 17/10

12:35-15:05

1 stop22h 30m

£770

LondonPorto Alegre

LHR - POA

LHRPOA

London Heathrow

Thu 2/10

06:00-20:25

1 stop18h 25m

Porto Alegre Salgado Filho

Sat 11/10

01:40-22:00

1 stop16h 20m

£849

LondonPorto Alegre

LHR - POA

LHRPOA

London Heathrow

Thu 18/9

12:00-10:35

2 stops26h 35m

Porto Alegre Salgado Filho

Fri 17/10

18:35-06:20

2 stops31h 45m

£856

LondonPorto Alegre

LHR - POA

LHRPOA

London Heathrow

Fri 30/5

08:40-08:05

2 stops27h 25m

Porto Alegre Salgado Filho

Mon 9/6

17:25-16:35

2 stops19h 10m

£922

LondonPorto Alegre

LHR - POA

LHRPOA

London Heathrow

Mon 26/5

09:00-02:00

2 stops21h 00m

Porto Alegre Salgado Filho

Mon 9/6

17:25-16:35

2 stops19h 10m

£925

LondonPorto Alegre

LHR - POA

LHRPOA

London Heathrow

Fri 30/5

08:40-08:05

2 stops27h 25m

Porto Alegre Salgado Filho

Sat 7/6

13:35-17:50

2 stops24h 15m

£966

LondonPorto Alegre

LHR - POA

LHRPOA

London Heathrow

Tue 10/6

18:40-09:20

2 stops18h 40m

Porto Alegre Salgado Filho

Tue 17/6

14:35-18:30

3 stops23h 55m

£1,059

LondonPorto Alegre

LHR - POA

LHRPOA

London Heathrow

Wed 22/10

08:00-23:55

2 stops19h 55m

£456

LondonPorto Alegre

LHR - POA

LHRPOA

London Heathrow

Wed 21/5

21:20-17:00

2 stops23h 40m

£524

LondonPorto Alegre

LHR - POA

LHRPOA

London Heathrow

Fri 24/10

10:00-16:10

2 stops34h 10m

£643

Flights are sorted by cheapest return flights first.

Deals found on 29/4

Showing 1-10 of 13 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 25 April 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 30 April 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.

Rainfall in Porto Alegre by month

Plan your trip to Porto Alegre by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Porto Alegre ranges from 70.0 - 130.0 inches per month. September is typically the wettest month, when rainfall can reach 130.0 mm. November is typically the driest time to visit Porto Alegre when rainfall is around 70.0 mm.

Temperature in Porto Alegre by month

Plan your trip to Porto Alegre by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Porto Alegre, use this chart to help with planning. For those seeking warmer temperatures, February is the ideal time of year to visit, when temperatures reach an average of 25.0 C. Travellers hoping to avoid the cold should look outside of June, when temperatures are typically at their lowest (around 13.0 C).

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 30 April 2025.
Get a feel of what it's like to fly with KLM, LATAM Airlines and SWISS from London to Porto Alegre by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.8
Good
1,334 reviews
Check prices

Boarding

7.8

Entertainment

7.1

Food

7.2

Overall

7.8

Comfort

7.7

Crew

8.4

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.
KLM
7.8
Good
1,334 reviews
KLM
7.8
Good
1,334 reviews
Check prices

Boarding

7.8

Entertainment

7.1

Food

7.2

Overall

7.8

Comfort

7.7

Crew

8.4

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.
LATAM Airlines
7.5
Good
1,767 reviews
KLM
7.8
Good
1,334 reviews
Check prices

Boarding

7.8

Entertainment

7.1

Food

7.2

Overall

7.8

Comfort

7.7

Crew

8.4

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.
SWISS
7.5
Good
1,588 reviews
KLM
7.8
Good
1,334 reviews
Check prices

Boarding

7.8

Entertainment

7.1

Food

7.2

Overall

7.8

Comfort

7.7

Crew

8.4

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.
Air France
7.4
Good
1,446 reviews
KLM
7.8
Good
1,334 reviews
Check prices

Boarding

7.8

Entertainment

7.1

Food

7.2

Overall

7.8

Comfort

7.7

Crew

8.4

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.
United Airlines
7.4
Good
8,696 reviews
KLM
7.8
Good
1,334 reviews
Check prices

Boarding

7.8

Entertainment

7.1

Food

7.2

Overall

7.8

Comfort

7.7

Crew

8.4

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.

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 LATAM Airlines. Our recent data shows that you can find tickets from as low as £770 on this airline. Additional options worth looking into are TAP AIR PORTUGAL and American Airlines, starting at £849 and £856 round-trip. You may be able to fly from London Heathrow Airport to Porto Alegre for 20% 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 £524 on LATAM Airlines. Other airlines that offer cheap prices include United Airlines from £643 and TAP AIR PORTUGAL from £648 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.
Gatwick to Porto Alegre flights

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 30 April 2025.
AirlineCheapestAverageFlexibilityOn-time
TAP AIR PORTUGALCheapest£611Average£911FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
Air FranceCheapest£646Average£758FlexibilityNo cancel feeOn-time77%
Search Air France flights
LATAM AirlinesCheapest£703Average£897FlexibilityNo cancel feeOn-time81%
Search LATAM Airlines flights

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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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