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Cheap flights from Porto Alegre to London Heathrow Airport from £343

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 30/11. Fares are subject to change and may not be available on all flights or dates of travel.
POA — LHR
5 Sep — 12 Sep1
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 August 2026.

Tue 11/805:50 -
2 stops30h 25m
Tue 18/808:40 -
2 stops37h 05m
Deal found 2/8£781
Thu 6/808:25 -
2 stops21h 15m
Thu 27/816:30 -
2 stops32h 00m
Deal found 3/8£786
Fri 13/1117:10 -
2 stops19h 30m
Mon 23/1116:30 -
2 stops33h 15m
Deal found 2/8£787
Thu 19/1119:50 -
1 stop15h 15m
Mon 23/1120:15 -
1 stop15h 15m
Deal found 4/8£795
Mon 17/801:00 -
1 stop29h 20m
Thu 14/106:00 -
1 stop16h 20m
Deal found 4/8£795
Sat 15/801:40 -
1 stop17h 15m
Sat 22/806:00 -
1 stop20h 40m
Deal found 5/8£797
Wed 18/1118:00 -
1 stop17h 05m
Mon 23/1120:15 -
2 stops29h 45m
Deal found 5/8£798
Sat 14/1121:10 -
1 stop17h 20m
Sat 5/1206:00 -
1 stop16h 40m
Deal found 5/8£805
Thu 6/815:45 -
2 stops20h 50m
Thu 27/808:40 -
2 stops19h 00m
Deal found 4/8£807

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 August 2026.

Round-trip from

£787

One-way from

£343

Popular in

July

Cheapest in

November

Average price

£985
ITA Airways
  • ITA Airways
  • 13/11-23/11
  • 4 total stops
  • 52h 45m total
  • Porto Alegre to London
Search Deals
30/11
  • 30/11
  • 1 total stop
  • 29h 25m total
  • Porto Alegre to London
Search Deals
Highest demand for flights based on searches. 12% potential increase in price (£101 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£23 potential savings vs. average return price).
Search Deals
Average for round-trip flights in August 2026
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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 August 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 Porto Alegre Salgado Filho - LHR London Heathrow

POALHR

Porto Alegre Salgado Filho

Mon 2/11

19:35-10:30

2 stops35h 55m

London Heathrow

Fri 13/11

06:20-10:15

2 stops30h 55m

£809

Porto AlegreLondon

POA Porto Alegre Salgado Filho - LHR London Heathrow

POALHR

Porto Alegre Salgado Filho

Mon 21/9

18:45-21:25

3 stops46h 40m

London Heathrow

Mon 5/10

06:15-09:30

2 stops31h 15m

£832

Porto AlegreLondon

POA Porto Alegre Salgado Filho - LHR London Heathrow

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

£877
Fastest return journey

Porto AlegreLondon

POA Porto Alegre Salgado Filho - LHR London Heathrow

POALHR

Porto Alegre Salgado Filho

Sun 18/10

18:30-17:35

2 stops19h 05m

London Heathrow

Tue 27/10

06:30-23:50

2 stops20h 20m

£897

Porto AlegreLondon

POA Porto Alegre Salgado Filho - LHR London Heathrow

POALHR

Porto Alegre Salgado Filho

Sat 14/11

19:40-13:50

2 stops39h 10m

London Heathrow

Sat 5/12

08:55-17:40

2 stops35h 45m

£910

Porto AlegreLondon

POA Porto Alegre Salgado Filho - LHR London Heathrow

POALHR

Porto Alegre Salgado Filho

Mon 21/9

20:50-21:25

2 stops44h 35m

London Heathrow

Thu 24/9

08:40-10:50

2 stops30h 10m

£1,036

Porto AlegreLondon

POA Porto Alegre Salgado Filho - LHR London Heathrow

POALHR

Porto Alegre Salgado Filho

Mon 7/9

18:45-18:35

3 stops43h 50m

London Heathrow

Mon 21/9

08:40-00:40

2 stops20h 00m

£1,051

Porto AlegreLondon

POA Porto Alegre Salgado Filho - LHR London Heathrow

POALHR

Porto Alegre Salgado Filho

Thu 20/8

15:30-22:05

2 stops26h 35m

London Heathrow

Sun 30/8

19:50-22:25

1 stop30h 35m

£1,092

Porto AlegreLondon

POA Porto Alegre Salgado Filho - LHR London Heathrow

POALHR

Porto Alegre Salgado Filho

Mon 7/9

18:45-19:25

2 stops20h 40m

London Heathrow

Mon 21/9

08:40-00:40

2 stops20h 00m

£1,144

Porto AlegreLondon

POA Porto Alegre Salgado Filho - LHR London Heathrow

POALHR

Porto Alegre Salgado Filho

Sun 23/8

14:05-16:15

2 stops22h 10m

London Heathrow

Wed 26/8

08:40-15:05

2 stops34h 25m

£1,149

Flights are sorted by cheapest return flights first.

Deals found on 5/8

Showing 1-10 of 23 resultsSorted by cheapest first
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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 £654). Flying from Porto Alegre to London Heathrow Airport in July is currently the most expensive (average of £1,265). 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?

Airfare is below average for this route at the moment.

Porto Alegre to London Heathrow Airport flights typically cost between £836 and £1,040 in November.
The cheapest return price found within the last 5 days was £787 on ITA Airways (13 Nov–23 Nov).

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?

    TAP AIR PORTUGAL and GOL can get you from Porto Alegre to London Heathrow Airport in just under 17h 50m. Your travel time can differ by up to 11h 30m. 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 £654). Flying from Porto Alegre to London Heathrow Airport in July is currently the most expensive (average of £1,265). 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
Milton Keynes
Gatwick
Luton
Wembley
Slough
Ilford
Hayes
Croydon
Colchester
Eastbourne
Brentford
Northampton
Watford
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Enfield
Kingston upon Thames
Southall
Poole

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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

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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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