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Cheap flights from Porto Alegre to London Heathrow Airport from £366

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 9/8. Fares are subject to change and may not be available on all flights or dates of travel.
POA — LHR
9 Jul — 16 Jul1
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 4 July 2025.

Round-trip from

£714

One-way from

£366

Popular in

September

Cheapest in

February

Average price

£865
17/8-6/9
  • 17/8-6/9
  • 4 total stops
  • 55h 55m total
  • Porto Alegre to London
9/8
  • 9/8
  • 2 total stops
  • 19h 10m total
  • Porto Alegre to London
Highest demand for flights based on searches. 8% potential increase in price (£52 potential increase over avg. return price).
Cheapest flight prices on average. 1% potential price decrease (£9 potential savings vs. average return price).
Average for round-trip flights in July 2025

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 4 July 2025.

Sun 17/813:35POA - LHR
2 stops20h 10mMultiple Airlines
Sat 6/908:40LHR - POA
2 stops35h 45mMultiple Airlines
Deal found 2/7£714
Sat 1/1110:40POA - LHR
2 stops20h 50mGOL
Sat 15/1109:00LHR - POA
2 stops27h 45mGOL
Deal found 3/7£728
Tue 21/1000:15POA - LHR
1 stop18h 40mTAP AIR PORTUGAL
Mon 3/1118:30LHR - POA
1 stop28h 10mTAP AIR PORTUGAL
Deal found 3/7£738
Thu 20/1118:20POA - LHR
1 stop16h 45mLATAM Airlines
Sun 30/1120:15LHR - POA
1 stop18h 20mLATAM Airlines
Deal found 3/7£762
Wed 16/710:05POA - LHR
2 stops20h 35mLufthansa
Wed 25/207:40LHR - POA
2 stops28h 40mLufthansa
Deal found 2/7£799
Tue 19/818:35POA - LHR
2 stops19h 00mKLM
Wed 10/908:40LHR - POA
2 stops19h 50mKLM
Deal found 2/7£804

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 4 July 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

Sun 17/8

13:35-13:45

2 stops20h 10m

London Heathrow

Sat 6/9

08:40-16:25

2 stops35h 45m

£714

Porto AlegreLondon

POA - LHR

POALHR

Porto Alegre Salgado Filho

Sat 1/11

10:40-10:30

2 stops20h 50m

London Heathrow

Sat 15/11

09:00-09:45

2 stops27h 45m

£728

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

£738

Porto AlegreLondon

POA - LHR

POALHR

Porto Alegre Salgado Filho

Thu 20/11

18:20-14:05

1 stop16h 45m

London Heathrow

Sun 30/11

20:15-11:35

1 stop18h 20m

£762

Porto AlegreLondon

POA - LHR

POALHR

Porto Alegre Salgado Filho

Wed 16/7

10:05-10:40

2 stops20h 35m

London Heathrow

Wed 25/2

07:40-09:20

2 stops28h 40m

£799

Porto AlegreLondon

POA - LHR

POALHR

Porto Alegre Salgado Filho

Tue 19/8

18:35-17:35

2 stops19h 00m

London Heathrow

Wed 10/9

08:40-00:30

2 stops19h 50m

£804

Porto AlegreLondon

POA - LHR

POALHR

Porto Alegre Salgado Filho

Tue 19/8

14:35-16:25

2 stops21h 50m

London Heathrow

Wed 10/9

20:05-09:20

2 stops41h 15m

£840

Porto AlegreLondon

POA - LHR

POALHR

Porto Alegre Salgado Filho

Sat 9/8

11:20-10:30

2 stops19h 10m

£366

Porto AlegreLondon

POA - LHR

POALHR

Porto Alegre Salgado Filho

Sun 20/7

18:50-15:05

1 stop16h 15m

£410

Porto AlegreLondon

POA - LHR

POALHR

Porto Alegre Salgado Filho

Sat 19/7

01:40-10:20

1 stop28h 40m

£476

Flights are sorted by cheapest return flights first.

Deals found on 3/7

Showing 1-10 of 13 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 27 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 4 July 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.

How much does it cost for a return flight from Porto Alegre to London Heathrow Airport?

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 4 July 2025.
Check out reviews from past customers who have flown with KLM, LATAM Airlines, andSWISS from Porto Alegre to London Heathrow Airport 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

Food

7.2

Entertainment

7.1

Comfort

7.6

Boarding

7.8

Overall

7.8

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

Food

7.2

Entertainment

7.1

Comfort

7.6

Boarding

7.8

Overall

7.8

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

Food

7.2

Entertainment

7.1

Comfort

7.6

Boarding

7.8

Overall

7.8

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

Food

7.2

Entertainment

7.1

Comfort

7.6

Boarding

7.8

Overall

7.8

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

Food

7.2

Entertainment

7.1

Comfort

7.6

Boarding

7.8

Overall

7.8

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

Food

7.2

Entertainment

7.1

Comfort

7.6

Boarding

7.8

Overall

7.8

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 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 £728. Other airlines that can offer you cheap pricing are TAP AIR PORTUGAL, from £738, and LATAM Airlines, from £762. 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 LATAM Airlines, which is currently one of the cheapest options available, starting at £410. TAP AIR PORTUGAL flights start at £476 while deals on GOL start at £746 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?

Book flights to Porto Alegre if you plan to visit one of these locations
Hounslow
Croydon
Milton Keynes
Deal
Northampton
Gatwick
Luton
Slough
Wembley
Crawley
Eastbourne
Ilford
Hayes
Folkestone
Southend-on-Sea
Watford
Ipswich
Winchester
Swindon
Maidstone

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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.

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 4 July 2025.
AirlineCheapestAverageFlexibilityOn-time
LATAM AirlinesCheapest£594Average£855FlexibilityNo 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 Porto Alegre to Heathrow?

Cheapflights makes it easy to find Porto Alegre to Heathrow flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

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

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.

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

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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