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Cheap flights from Porto Alegre to London Heathrow Airport from £377

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 20/11. Fares are subject to change and may not be available on all flights or dates of travel.
POA — LHR
5 Aug — 12 Aug1
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 6 July 2026.

Fri 13/1112:25
POA
-
LHR
2 stops22h 40m
LATAM Airlines
Mon 23/1120:15
LHR
-
POA
2 stops20h 35m
LATAM Airlines
Deal found 6/7£662
Sat 24/1001:40
POA
-
LHR
1 stop16h 55m
TAP AIR PORTUGAL
Tue 10/1106:00
LHR
-
POA
1 stop16h 40m
TAP AIR PORTUGAL
Deal found 6/7£664
Thu 12/1105:30
POA
-
LHR
2 stops26h 55m
Multiple Airlines
Sun 29/1118:30
LHR
-
POA
2 stops28h 35m
Multiple Airlines
Deal found 6/7£707
Tue 17/1121:10
POA
-
LHR
1 stop17h 20m
TAP AIR PORTUGAL
Wed 2/1218:30
LHR
-
POA
1 stop27h 50m
TAP AIR PORTUGAL
Deal found 2/7£781
Tue 11/811:25
POA
-
LHR
2 stops19h 05m
GOL
Thu 3/908:40
LHR
-
POA
2 stops20h 00m
GOL
Deal found 2/7£784
Tue 11/811:25
POA
-
LHR
2 stops19h 05m
GOL
Sat 5/908:40
LHR
-
POA
2 stops29h 55m
GOL
Deal found 3/7£784
Tue 17/1111:20
POA
-
LHR
2 stops20h 10m
GOL
Wed 2/1206:30
LHR
-
POA
2 stops20h 10m
GOL
Deal found 2/7£785
Mon 27/715:40
POA
-
LHR
2 stops25h 45m
GOL
Tue 18/808:40
LHR
-
POA
2 stops19h 00m
GOL
Deal found 2/7£786
Mon 3/818:45
POA
-
LHR
2 stops17h 30m
GOL
Wed 19/808:40
LHR
-
POA
2 stops20h 00m
GOL
Deal found 6/7£797
Thu 12/1119:50
POA
-
LHR
1 stop15h 15m
LATAM Airlines
Sun 29/1120:15
LHR
-
POA
1 stop18h 45m
LATAM Airlines
Deal found 6/7£799
Sun 22/1109:10
POA
-
LHR
1 stop25h 55m
LATAM Airlines
Thu 26/1120:15
LHR
-
POA
1 stop15h 15m
LATAM Airlines
Deal found 2/7£799
Fri 6/1115:00
POA
-
LHR
1 stop20h 05m
LATAM Airlines
Tue 17/1120:15
LHR
-
POA
2 stops20h 35m
LATAM Airlines
Deal found 3/7£800

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 6 July 2026.

Round-trip from

£662

One-way from

£377

Popular in

January

Cheapest in

November

Average price

£1,070
LATAM Airlines
  • LATAM Airlines
  • 13/11-23/11
  • 4 total stops
  • 43h 15m total
  • Porto Alegre to London
Search Deals
LATAM Airlines
  • LATAM Airlines
  • 20/11
  • 2 total stops
  • 23h 55m total
  • Porto Alegre to London
Search Deals
Highest demand for flights based on searches. 9% potential increase in price (£75 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£19 potential savings vs. average return price).
Search Deals
Average for round-trip flights in July 2026
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 6 July 2026.
Use the filters below to find and compare flights from Porto Alegre to London Heathrow Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

Porto AlegreLondon

POA - LHR

POALHR

Porto Alegre Salgado Filho

Tue 28/7

11:35-16:35

2 stops25h 00m

London Heathrow

Tue 18/8

08:40-00:40

2 stops20h 00m

£812

Porto AlegreLondon

POA - LHR

POALHR

Porto Alegre Salgado Filho

Sat 17/10

01:40-10:20

1 stop28h 40m

London Heathrow

Tue 3/11

06:00-19:40

1 stop16h 40m

£815
Fastest return journey

Porto AlegreLondon

POA - LHR

POALHR

Porto Alegre Salgado Filho

Sat 17/10

01:40-22:55

1 stop17h 15m

London Heathrow

Tue 27/10

06:00-19:40

1 stop16h 40m

£883

Porto AlegreLondon

POA - LHR

POALHR

Porto Alegre Salgado Filho

Sun 2/8

18:45-21:25

3 stops46h 40m

London Heathrow

Mon 17/8

08:55-23:40

2 stops18h 45m

£937

Porto AlegreLondon

POA - LHR

POALHR

Porto Alegre Salgado Filho

Sat 1/8

01:40-12:45

1 stop31h 05m

London Heathrow

Mon 17/8

08:00-22:25

1 stop18h 25m

£946

Porto AlegreLondon

POA - LHR

POALHR

Porto Alegre Salgado Filho

Fri 13/11

16:15-16:05

3 stops44h 50m

London Heathrow

Mon 23/11

19:20-23:55

2 stops31h 35m

£978

Porto AlegreLondon

POA - LHR

POALHR

Porto Alegre Salgado Filho

Sat 12/9

18:30-17:50

2 stops19h 20m

London Heathrow

Tue 22/9

08:40-00:40

2 stops20h 00m

£996

Porto AlegreLondon

POA - LHR

POALHR

Porto Alegre Salgado Filho

Sat 12/9

18:30-16:15

3 stops41h 45m

London Heathrow

Tue 22/9

19:45-00:40

2 stops32h 55m

£1,065
Cheapest one-way

Porto AlegreLondon

POA - LHR

POALHR

Porto Alegre Salgado Filho

Wed 14/10

14:20-15:05

1 stop20h 45m

£485
Fastest single journey

Porto AlegreLondon

POA - LHR

POALHR

Porto Alegre Salgado Filho

Fri 14/8

10:05-08:25

2 stops18h 20m

£552

Flights are sorted by cheapest return flights first.

Deals found on 6/7

Showing 1-10 of 15 resultsSorted by cheapest first
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

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

Currently, November is the cheapest month in which you can book a flight from Porto Alegre to London Heathrow Airport (average of £659). Flying from Porto Alegre to London Heathrow Airport in January is currently the most expensive (average of £1,194). 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.

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

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 0 different airlines.

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

    GOL and TAP AIR PORTUGAL can get you from Porto Alegre to London Heathrow Airport in just under 24h 30m. Your travel time can differ by up to 4h 10m. 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.

  • 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, November is the cheapest month in which you can book a flight from Porto Alegre to London Heathrow Airport (average of £659). Flying from Porto Alegre to London Heathrow Airport in January is currently the most expensive (average of £1,194). 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
Hounslow
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Luton
Wembley
Gatwick
Croydon
Slough
Ilford
Hayes
Brentford
Colchester
Northampton
Watford
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Aylesbury
Romford

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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

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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