Find flights
When to book
Airlines
FAQs

Cheap flights from London Heathrow Airport to Porto Alegre from £397

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 7/4. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — POA
27 Mar — 3 Apr1
1 adult

Cheapflights Tip: The best prices from London Heathrow to Porto Alegre Salgado Filho are usually found in September 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 22 March 2025.

Round-trip from

£768

One-way from

£397

Popular in

December

Cheapest in

September

Average price

£842
LATAM Airlines
  • LATAM Airlines
  • 26/5-9/6
  • 2 total stops
  • 37h 50m total
  • London to Porto Alegre
Search Deals
7/4
  • 7/4
  • 3 total stops
  • 30h 35m total
  • London to Porto Alegre
Search Deals
Highest demand for flights based on searches. 6% potential increase in price (£56 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£24 potential savings vs. average return price).
Search Deals
Average for round-trip flights in March 2025
Search Deals

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 22 March 2025.

Wed 5/1106:55LHR - POA
2 stops20h 00mMultiple Airlines
Thu 6/1117:35POA - LHR
1 stop17h 30mMultiple Airlines
Deal found 21/3£742
Mon 26/521:20LHR - POA
1 stop20h 30mLATAM Airlines
Mon 9/617:45POA - LHR
1 stop17h 20mLATAM Airlines
Deal found 21/3£768
Sat 1/1106:20LHR - POA
2 stops28h 50mAir France
Sat 15/1110:35POA - LHR
2 stops31h 50mAir France
Deal found 21/3£794
Mon 26/506:30LHR - POA
2 stops23h 30mKLM
Mon 9/618:35POA - LHR
2 stops17h 40mKLM
Deal found 21/3£821
Wed 1/1011:20LHR - POA
2 stops27h 15mTurkish Airlines
Wed 15/1018:35POA - LHR
2 stops35h 15mTurkish Airlines
Deal found 21/3£834
Thu 3/408:00LHR - POA
1 stop16h 25mTAP AIR PORTUGAL
Tue 8/400:15POA - LHR
1 stop37h 30mTAP AIR PORTUGAL
Deal found 21/3£862
Thu 3/412:15LHR - POA
2 stops26h 10mAmerican Airlines
Wed 9/418:35POA - LHR
2 stops31h 50mAmerican Airlines
Deal found 21/3£863
Mon 13/1019:10LHR - POA
2 stops18h 15mIberia
Wed 29/1011:25POA - LHR
2 stops18h 50mIberia
Deal found 21/3£939
Wed 29/1007:40LHR - POA
2 stops20h 00mLufthansa
Thu 13/1110:10POA - LHR
2 stops19h 35mLufthansa
Deal found 21/3£978
Wed 1/1007:00LHR - POA
3 stops30h 25mSWISS
Wed 15/1014:35POA - LHR
3 stops22h 00mSWISS
Deal found 21/3£1,055
Sat 5/414:10LHR - POA
2 stops31h 45mUnited Airlines
Sat 19/414:20POA - LHR
2 stops37h 20mUnited Airlines
Deal found 21/3£1,216
Tue 8/721:55LHR - POA
1 stop23h 05mBritish Airways
Thu 24/711:05POA - LHR
1 stop15h 45mBritish Airways
Deal found 21/3£1,256

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 22 March 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

Mon 26/5

21:20-13:50

1 stop20h 30m

Porto Alegre Salgado Filho

Mon 9/6

17:45-15:05

1 stop17h 20m

£768

LondonPorto Alegre

LHR - POA

LHRPOA

London Heathrow

Mon 26/5

06:30-02:00

2 stops23h 30m

Porto Alegre Salgado Filho

Mon 9/6

18:35-16:15

2 stops17h 40m

£821

LondonPorto Alegre

LHR - POA

LHRPOA

London Heathrow

Sat 10/5

06:30-09:45

2 stops31h 15m

Porto Alegre Salgado Filho

Sat 24/5

11:20-10:30

2 stops19h 10m

£839

LondonPorto Alegre

LHR - POA

LHRPOA

London Heathrow

Thu 3/4

08:00-20:25

1 stop16h 25m

Porto Alegre Salgado Filho

Tue 8/4

00:15-17:45

1 stop37h 30m

£862

LondonPorto Alegre

LHR - POA

LHRPOA

London Heathrow

Thu 3/4

12:15-10:25

2 stops26h 10m

Porto Alegre Salgado Filho

Wed 9/4

18:35-06:25

2 stops31h 50m

£863

LondonPorto Alegre

LHR - POA

LHRPOA

London Heathrow

Tue 17/6

22:25-23:15

2 stops28h 50m

Porto Alegre Salgado Filho

Tue 15/7

18:35-09:50

2 stops35h 15m

£952

LondonPorto Alegre

LHR - POA

LHRPOA

London Heathrow

Sat 5/4

14:10-17:55

2 stops31h 45m

Porto Alegre Salgado Filho

Sat 19/4

14:20-07:40

2 stops37h 20m

£1,216

LondonPorto Alegre

LHR - POA

LHRPOA

London Heathrow

Tue 8/7

21:55-17:00

1 stop23h 05m

Porto Alegre Salgado Filho

Thu 24/7

11:05-06:50

1 stop15h 45m

£1,256

LondonPorto Alegre

LHR - POA

LHRPOA

London Heathrow

Mon 1/9

18:40-09:25

2 stops18h 45m

Porto Alegre Salgado Filho

Mon 15/9

14:35-16:35

3 stops22h 00m

£1,286

LondonPorto Alegre

LHR - POA

LHRPOA

London Heathrow

Fri 4/4

21:20-09:25

1 stop16h 05m

Porto Alegre Salgado Filho

Sun 20/4

20:00-15:05

1 stop15h 05m

£1,589

Flights are sorted by cheapest return flights first.

Deals found on 21/3

Showing 1-10 of 14 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 21 March 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 22 March 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 22 March 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
1,319 reviews
Check prices

Entertainment

7.2

Crew

8.4

Overall

7.8

Boarding

7.8

Comfort

7.7

Food

7.3

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
1,319 reviews
KLM
7.8
Good
1,319 reviews
Check prices

Entertainment

7.2

Crew

8.4

Overall

7.8

Boarding

7.8

Comfort

7.7

Food

7.3

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
1,750 reviews
KLM
7.8
Good
1,319 reviews
Check prices

Entertainment

7.2

Crew

8.4

Overall

7.8

Boarding

7.8

Comfort

7.7

Food

7.3

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
1,567 reviews
KLM
7.8
Good
1,319 reviews
Check prices

Entertainment

7.2

Crew

8.4

Overall

7.8

Boarding

7.8

Comfort

7.7

Food

7.3

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
8,605 reviews
KLM
7.8
Good
1,319 reviews
Check prices

Entertainment

7.2

Crew

8.4

Overall

7.8

Boarding

7.8

Comfort

7.7

Food

7.3

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.
Virgin Atlantic
7.4
Good
634 reviews
KLM
7.8
Good
1,319 reviews
Check prices

Entertainment

7.2

Crew

8.4

Overall

7.8

Boarding

7.8

Comfort

7.7

Food

7.3

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 £768 on this airline. Additional options worth looking into are KLM and TAP AIR PORTUGAL, starting at £821 and £862 round-trip. You may be able to fly from London Heathrow Airport to Porto Alegre for 22% 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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 22 March 2025.
AirlineCheapestAverageFlexibilityOn-time
TAP AIR PORTUGALCheapest£634Average£921FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
Air FranceCheapest£669Average£783FlexibilityNo cancel feeOn-time77%
Search Air France flights
LATAM AirlinesCheapest£728Average£939FlexibilityNo cancel feeOn-time81%
Search LATAM Airlines flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Porto Alegre from Heathrow today with Cheapflights!

Why should you use Cheapflights to find cheap flight tickets from Heathrow to Porto Alegre?

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.

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.

100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.