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Cheap flights from Porto Alegre to London Heathrow Airport from £375

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 22/6. Fares are subject to change and may not be available on all flights or dates of travel.
POA — LHR
18 Jun — 25 Jun1
1 adult

Cheap flight deals from Porto Alegre to Heathrow

Discover tips and strategies to find the most affordable flight options for your journey from Porto Alegre (POA) to Heathrow (LHR). 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 13 June 2025.

Round-trip from

£727

One-way from

£375

Popular in

September

Cheapest in

February

Average price

£848
GOL
  • GOL
  • 14/8-9/9
  • 4 total stops
  • 60h 30m total
  • Porto Alegre to London
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Avianca
  • Avianca
  • 22/6
  • 2 total stops
  • 46h 00m total
  • Porto Alegre to London
Search Deals
Highest demand for flights based on searches. 7% potential increase in price (£49 potential increase over avg. return price).
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Cheapest flight prices on average. 1% potential price decrease (£9 potential savings vs. average return price).
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Average for round-trip flights in June 2025
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Find flight deals from Porto Alegre to Heathrow

Cheapest flights from Porto Alegre to Heathrow
Explore the most affordable flight options available from Porto Alegre to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 13 June 2025.

Thu 11/1219:35POA - LHR
2 stops18h 00mGOL
Thu 19/206:30LHR - POA
2 stops21h 00mGOL
Deal found 12/6£725
Tue 21/1000:15POA - LHR
1 stop18h 40mTAP AIR PORTUGAL
Mon 3/1118:30LHR - POA
1 stop28h 10mTAP AIR PORTUGAL
Deal found 12/6£734
Sat 1/1114:35POA - LHR
2 stops19h 25mMultiple Airlines
Wed 12/1107:40LHR - POA
2 stops20h 00mMultiple Airlines
Deal found 10/6£758
Tue 28/1014:35POA - LHR
2 stops19h 25mSWISS
Sat 8/1120:05LHR - POA
2 stops42h 35mSWISS
Deal found 12/6£764
Wed 22/1017:45POA - LHR
1 stop17h 20mLATAM Airlines
Mon 3/1120:15LHR - POA
1 stop16h 00mLATAM Airlines
Deal found 12/6£792
Sat 20/1214:35POA - LHR
2 stops25h 15mLufthansa
Fri 30/107:40LHR - POA
2 stops31h 00mLufthansa
Deal found 11/6£913
Tue 19/818:35POA - LHR
2 stops17h 40mKLM
Wed 10/908:40LHR - POA
2 stops19h 50mKLM
Deal found 11/6£932

Cheapflights Fare Finder

Customise your flight search to find flights from Porto Alegre to Heathrow 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 13 June 2025.
Use the filters below to find and compare flights from Porto Alegre to London Heathrow Airport that are best for you.

Fly from

Porto Alegre

Fly to

Heathrow

Route

Depart

Return

Price

Porto AlegreLondon

POA - LHR

POALHR

Porto Alegre Salgado Filho

Thu 14/8

11:05-16:15

2 stops25h 10m

London Heathrow

Tue 9/9

17:35-00:55

2 stops35h 20m

£727

Porto AlegreLondon

POA - LHR

POALHR

Porto Alegre Salgado Filho

Tue 21/10

00:15-22:55

1 stop18h 40m

London Heathrow

Mon 3/11

18:30-19:40

1 stop28h 10m

£734

Porto AlegreLondon

POA - LHR

POALHR

Porto Alegre Salgado Filho

Sat 1/11

14:35-13:00

2 stops19h 25m

London Heathrow

Wed 12/11

07:40-00:40

2 stops20h 00m

£758

Porto AlegreLondon

POA - LHR

POALHR

Porto Alegre Salgado Filho

Tue 28/10

14:35-13:00

2 stops19h 25m

London Heathrow

Sat 8/11

20:05-11:40

2 stops42h 35m

£764

Porto AlegreLondon

POA - LHR

POALHR

Porto Alegre Salgado Filho

Wed 22/10

17:45-15:05

1 stop17h 20m

London Heathrow

Mon 3/11

20:15-09:15

1 stop16h 00m

£792

Porto AlegreLondon

POA - LHR

POALHR

Porto Alegre Salgado Filho

Tue 19/8

18:35-16:15

2 stops17h 40m

London Heathrow

Wed 10/9

08:40-00:30

2 stops19h 50m

£932

Porto AlegreLondon

POA - LHR

POALHR

Porto Alegre Salgado Filho

Mon 11/8

14:35-09:40

2 stops39h 05m

London Heathrow

Sun 7/9

07:30-09:10

2 stops29h 40m

£945

Porto AlegreLondon

POA - LHR

POALHR

Porto Alegre Salgado Filho

Sun 22/6

13:35-15:35

2 stops46h 00m

£375

Porto AlegreLondon

POA - LHR

POALHR

Porto Alegre Salgado Filho

Thu 19/6

21:55-17:45

1 stop15h 50m

£430

Porto AlegreLondon

POA - LHR

POALHR

Porto Alegre Salgado Filho

Mon 21/7

20:00-15:05

1 stop15h 05m

£434

Flights are sorted by cheapest return flights first.

Deals found on 11/6

Showing 1-10 of 16 results
1
2

Best time to book a flight from Porto Alegre to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from Porto Alegre 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 Porto Alegre to London Heathrow Airport

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

Use this chart to determine the optimal time to book a return flight from Porto Alegre to Heathrow. Price data was last updated on 9 June 2025.

The best time to book flights from Porto Alegre to London Heathrow Airport is 58 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Porto Alegre to London Heathrow Airport?

Currently, January is the cheapest month in which you can book a flight from Porto Alegre to London Heathrow Airport (average of £112). Flying from Porto Alegre to London Heathrow Airport in August is currently the most expensive (average of £164). 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.

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

Find hourly flight availability from Porto Alegre to Heathrow. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 13 June 2025.

When flying from Porto Alegre to London Heathrow Airport, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Rainfall in Heathrow by month

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

In terms of precipitation, rainfall in London Heathrow Airport ranges from 40.0 - 70.0 inches per month. January is typically the wettest month, when rainfall can reach 70.0 mm. July is typically the driest time to visit London Heathrow Airport when rainfall is around 40.0 mm.

Temperature in Heathrow by month

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

If weather is an important factor for your trip to London Heathrow Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 C).

Reviews of airlines servicing Heathrow

Get insights into the airlines that provide service to Heathrow. 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 Heathrow. Reviews last updated 13 June 2025.
Peruse reviews from past customers who have flown with KLM, LATAM Airlines and SWISS from Porto Alegre to London to help guide your decision. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.8
Good
1,358 reviews
Check prices

Overall

7.8

Entertainment

7.1

Comfort

7.7

Food

7.2

Boarding

7.8

Crew

8.4

Reviews

1 / 20
8.0
Excellent

Allan,Jun 2025

YYZ - AMS

I always enjoy flying KLM. Service is attentive, friendly and professional. The seat, when fully reclined is a little hard; some kind of mattress or topper would be helpful here. The dinner was really not very good …. “Meatless meatballs” tasted quite peculiar. Breakfast which consisted of an egg white omelette in flour tortilla was also rather tasteless.
KLM
7.8
Good
1,358 reviews
KLM
7.8
Good
1,358 reviews
Check prices

Overall

7.8

Entertainment

7.1

Comfort

7.7

Food

7.2

Boarding

7.8

Crew

8.4

Reviews

1 / 20
8.0
Excellent

Allan,Jun 2025

YYZ - AMS

I always enjoy flying KLM. Service is attentive, friendly and professional. The seat, when fully reclined is a little hard; some kind of mattress or topper would be helpful here. The dinner was really not very good …. “Meatless meatballs” tasted quite peculiar. Breakfast which consisted of an egg white omelette in flour tortilla was also rather tasteless.
LATAM Airlines
7.5
Good
1,785 reviews
KLM
7.8
Good
1,358 reviews
Check prices

Overall

7.8

Entertainment

7.1

Comfort

7.7

Food

7.2

Boarding

7.8

Crew

8.4

Reviews

1 / 20
8.0
Excellent

Allan,Jun 2025

YYZ - AMS

I always enjoy flying KLM. Service is attentive, friendly and professional. The seat, when fully reclined is a little hard; some kind of mattress or topper would be helpful here. The dinner was really not very good …. “Meatless meatballs” tasted quite peculiar. Breakfast which consisted of an egg white omelette in flour tortilla was also rather tasteless.
SWISS
7.5
Good
1,624 reviews
KLM
7.8
Good
1,358 reviews
Check prices

Overall

7.8

Entertainment

7.1

Comfort

7.7

Food

7.2

Boarding

7.8

Crew

8.4

Reviews

1 / 20
8.0
Excellent

Allan,Jun 2025

YYZ - AMS

I always enjoy flying KLM. Service is attentive, friendly and professional. The seat, when fully reclined is a little hard; some kind of mattress or topper would be helpful here. The dinner was really not very good …. “Meatless meatballs” tasted quite peculiar. Breakfast which consisted of an egg white omelette in flour tortilla was also rather tasteless.
United Airlines
7.4
Good
8,790 reviews
KLM
7.8
Good
1,358 reviews
Check prices

Overall

7.8

Entertainment

7.1

Comfort

7.7

Food

7.2

Boarding

7.8

Crew

8.4

Reviews

1 / 20
8.0
Excellent

Allan,Jun 2025

YYZ - AMS

I always enjoy flying KLM. Service is attentive, friendly and professional. The seat, when fully reclined is a little hard; some kind of mattress or topper would be helpful here. The dinner was really not very good …. “Meatless meatballs” tasted quite peculiar. Breakfast which consisted of an egg white omelette in flour tortilla was also rather tasteless.
GOL
7.3
Good
1,073 reviews
KLM
7.8
Good
1,358 reviews
Check prices

Overall

7.8

Entertainment

7.1

Comfort

7.7

Food

7.2

Boarding

7.8

Crew

8.4

Reviews

1 / 20
8.0
Excellent

Allan,Jun 2025

YYZ - AMS

I always enjoy flying KLM. Service is attentive, friendly and professional. The seat, when fully reclined is a little hard; some kind of mattress or topper would be helpful here. The dinner was really not very good …. “Meatless meatballs” tasted quite peculiar. Breakfast which consisted of an egg white omelette in flour tortilla was also rather tasteless.

Related info for your journey

Find useful and relevant information for your journey from Porto Alegre to Heathrow. 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 from for flights from Porto Alegre to London Heathrow?

    Located just 4.0 mi from the city center, Porto Alegre Salgado Filho is the airport most travelers will use when flying to London Heathrow from Porto Alegre. Booking flights from Salgado Filho (POA) to London Heathrow should be relatively easy as there are 0 daily outbound flights to London Heathrow from 1 airline.

  • What are the cheapest airlines flying from Porto Alegre to London Heathrow Airport round-trip?

    Cheapflights users have booked flights from Porto Alegre to London Heathrow Airport round-trip from £727. Other airlines that can offer you cheap pricing are TAP AIR PORTUGAL, from £734, and SWISS, from £764. GOL is 9% cheaper than the average price of flights available within the next 90 days to this destination.

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

    To fly one-way, consider booking your trip with Avianca, which is currently one of the cheapest options available, starting at £375. TAP AIR PORTUGAL flights start at £430 while deals on LATAM Airlines start at £434 one-way.

  • Can I find deals for flights from Porto Alegre to Heathrow that include hotel bookings?

    Yes. In addition to deals on Porto Alegre to Heathrow flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Porto Alegre to Heathrow?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Porto Alegre to Heathrow.

  • Can I find deals for business class flights from Porto Alegre to Heathrow?

    Yes. Cheapflights offers flight deals from Porto Alegre to Heathrow 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 Porto Alegre to London Heathrow Airport?

    Currently, January is the cheapest month in which you can book a flight from Porto Alegre to London Heathrow Airport (average of £112). Flying from Porto Alegre to London Heathrow Airport in August is currently the most expensive (average of £164). 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

Travelling to a place near Porto Alegre?

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Alternative routes for Porto Alegre to Heathrow

See prices for flight routes from nearby airports that may be better suited for you.
Porto Alegre to Gatwick flights

Top airline flying from Porto Alegre to Heathrow

Discover the top airline that operate flights from Porto Alegre to Heathrow. 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 13 June 2025.
AirlineCheapestAverageFlexibilityOn-time
LATAM AirlinesCheapest£597Average£859FlexibilityNo cancel feeOn-time81%
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How does Cheapflights help users find flights from Porto Alegre to Heathrow?

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By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Heathrow from Porto Alegre.

Can Cheapflights find flights from Porto Alegre to Heathrow with no change fees?

Certainly. Search results for flights to Heathrow from Porto Alegre shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

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Yes, Cheapflights offers price alerts on Porto Alegre to Heathrow flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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