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Cheap flights from Porto Alegre to London Heathrow Airport from £419

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 22/1. Fares are subject to change and may not be available on all flights or dates of travel.
POA — LHR
4 1月 — 11 1月1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Porto Alegre to Heathrow

Enter your travel dates to find the best prices.

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 5 12月 2025.

週三 17/1210:35POA - LHR
2 stops24h 10mGOL
週五 23/106:20LHR - POA
2 stops21h 25mGOL
Deal found 3/12£949
週三 17/1210:05POA - LHR
2 stops20h 10mLATAM Airlines
週三 31/1220:15LHR - POA
1 stop16h 00mLATAM Airlines
Deal found 2/12£974
週二 16/1210:05POA - LHR
2 stops19h 20mIberia
週日 25/119:40LHR - POA
2 stops21h 25mIberia
Deal found 3/12£977
週四 18/1220:10POA - LHR
1 stop14h 55mLATAM Airlines
週三 7/120:15LHR - POA
1 stop16h 00mLATAM Airlines
Deal found 4/12£1,018
週二 23/1212:55POA - LHR
1 stop22h 10mLATAM Airlines
週二 3/219:05LHR - POA
2 stops19h 30mLATAM Airlines
Deal found 2/12£1,042
週三 17/1212:45POA - LHR
1 stop22h 20mLATAM Airlines
週五 23/120:15LHR - POA
1 stop16h 05mLATAM Airlines
Deal found 3/12£1,046
週三 17/1214:00POA - LHR
1 stop21h 05mLATAM Airlines
週日 25/120:15LHR - POA
1 stop25h 35mLATAM Airlines
Deal found 3/12£1,050
週一 22/1221:40POA - LHR
2 stops37h 25mLATAM Airlines
週三 14/120:15LHR - POA
1 stop16h 00mLATAM Airlines
Deal found 3/12£1,057
週三 24/1212:30POA - LHR
2 stops17h 15mLufthansa
週六 27/1217:30LHR - POA
2 stops21h 05mLufthansa
Deal found 3/12£1,059

Find 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 5 12月 2025.

Round-trip from

£630

One-way from

£419

Popular in

December

Cheapest in

February

Average price

£999
LATAM Airlines
  • LATAM Airlines
  • 9/3-18/3
  • 3 total stops
  • 40h 05m total
  • Porto Alegre to London
Search Deals
22/1
  • 22/1
  • 2 total stops
  • 30h 05m total
  • Porto Alegre to London
Search Deals
Highest demand for flights based on searches. 6% potential increase in price (£40 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (£11 potential savings vs. average return price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

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 5 12月 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

週五 13/3

14:55-14:05

2 stops20h 10m

London Heathrow

週日 19/4

21:20-16:55

2 stops23h 35m

£666

Porto AlegreLondon

POA - LHR

POALHR

Porto Alegre Salgado Filho

週三 29/4

06:00-10:30

2 stops24h 30m

London Heathrow

週三 13/5

08:40-23:55

2 stops19h 15m

£702

Porto AlegreLondon

POA - LHR

POALHR

Porto Alegre Salgado Filho

週一 9/3

13:40-13:50

2 stops21h 10m

London Heathrow

週三 18/3

06:20-08:40

2 stops29h 20m

£770

Porto AlegreLondon

POA - LHR

POALHR

Porto Alegre Salgado Filho

週三 11/3

13:40-17:00

2 stops24h 20m

London Heathrow

週一 30/3

08:40-00:20

2 stops19h 40m

£771

Porto AlegreLondon

POA - LHR

POALHR

Porto Alegre Salgado Filho

週一 9/3

14:50-13:00

2 stops19h 10m

London Heathrow

週三 18/3

07:00-11:35

3 stops31h 35m

£820

Porto AlegreLondon

POA - LHR

POALHR

Porto Alegre Salgado Filho

週五 13/3

17:55-17:05

2 stops20h 10m

London Heathrow

週一 30/3

18:30-09:15

2 stops18h 45m

£842

Porto AlegreLondon

POA - LHR

POALHR

Porto Alegre Salgado Filho

週六 4/4

14:25-15:05

1 stop20h 40m

London Heathrow

週六 11/4

21:20-16:45

2 stops23h 25m

£849

Porto AlegreLondon

POA - LHR

POALHR

Porto Alegre Salgado Filho

週日 1/2

20:10-14:05

1 stop14h 55m

London Heathrow

週四 26/2

20:15-13:15

2 stops20h 00m

£854

Porto AlegreLondon

POA - LHR

POALHR

Porto Alegre Salgado Filho

週四 12/3

13:40-16:05

2 stops23h 25m

London Heathrow

週六 28/3

17:50-00:30

2 stops33h 40m

£872

Porto AlegreLondon

POA - LHR

POALHR

Porto Alegre Salgado Filho

週日 15/3

13:40-16:05

2 stops23h 25m

London Heathrow

週六 28/3

17:50-00:30

2 stops33h 40m

£872

Flights are sorted by cheapest return flights first.

Deals found on 2/12

Showing 1-10 of 20 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 28 November 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 £241). Flying from Porto Alegre to London Heathrow Airport in September is currently the most expensive (average of £851). 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 5 12月 2025.

Unlike in the afternoon, when flights are generally more expensive, you can save up to 23% on flights from Porto Alegre to London Heathrow Airport by exploring options for tickets in the morning.

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 5 12月 2025.
Check out reviews from past customers who have flown with LATAM Airlines 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.
LATAM Airlines
7.5
Good
1,890 reviews
Check prices

Boarding

7.6

Food

6.7

Entertainment

7.0

Crew

8.0

Comfort

7.4

Overall

7.5

Reviews

1 / 20
8.0
Excellent

Juan Carlos,Sept 2025

MVD - SCL

My experience was good but on my way back from LA to Vegas when I was boarding I was pulled to the side and I was asked to show my passport, I ‘am an American Citizen since 2001. I was the only one who was asked, there was no reason for that. Other that it was a good experience.
LATAM Airlines
7.5
Good
1,890 reviews
LATAM Airlines
7.5
Good
1,890 reviews
Check prices

Boarding

7.6

Food

6.7

Entertainment

7.0

Crew

8.0

Comfort

7.4

Overall

7.5

Reviews

1 / 20
8.0
Excellent

Juan Carlos,Sept 2025

MVD - SCL

My experience was good but on my way back from LA to Vegas when I was boarding I was pulled to the side and I was asked to show my passport, I ‘am an American Citizen since 2001. I was the only one who was asked, there was no reason for that. Other that it was a good experience.

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.

  • How long is the flight from Porto Alegre to London Heathrow Airport?

    LATAM Airlines, GOL, and KLM can get you from Porto Alegre to London Heathrow Airport in just under 20h 10m. Your travel time can differ by up to 4h 20m. Airlines will cover a distance of 6410 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • What is the cheapest airline to fly from Porto Alegre to London Heathrow Airport round-trip?

    Cheapflights users have booked flights from Porto Alegre to London Heathrow Airport round-trip from £608. LATAM Airlines is 27% cheaper than the average price of flights available within the next 90 days to this destination.

  • 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 £241). Flying from Porto Alegre to London Heathrow Airport in September is currently the most expensive (average of £851). 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 London Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Milton Keynes
Croydon
Northampton
Hounslow
Slough
Gatwick
Luton
Ilford
Wembley
Colchester
Brentford
Watford
Hayes
Crawley
Deal
Winchester
Swindon
Romford
Bedford
Chichester

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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 5 12月 2025.
AirlineCheapestAverageFlexibilityOn-time
LATAM AirlinesCheapest£608Average£814FlexibilityNo 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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