Find flights
When to book
FAQs

Cheap flights from Porto Alegre to London Heathrow Airport from £323

POA — LHR
18 Sep — 25 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

Sat 26/917:45 -
1 stop17h 20m
Fri 2/1021:20 -
1 stop19h 10m
Deal found 16/8£760
Fri 13/1110:40 -
2 stops26h 00m
Mon 23/1116:30 -
2 stops33h 00m
Deal found 15/8£781
Wed 18/1120:05 -
1 stop15h 00m
Mon 23/1120:15 -
1 stop24h 00m
Deal found 16/8£782
Fri 13/1109:15 -
1 stop25h 50m
Mon 23/1120:15 -
2 stops29h 45m
Deal found 18/8£784
Thu 29/1000:45 -
1 stop18h 55m
Tue 10/1106:00 -
1 stop16h 40m
Deal found 19/8£790
Tue 18/800:15 -
1 stop18h 40m
Wed 26/818:45 -
1 stop29h 40m
Deal found 15/8£791
Sat 15/801:40 -
1 stop31h 05m
Fri 21/818:45 -
1 stop31h 55m
Deal found 15/8£792
Tue 17/1121:10 -
1 stop21h 25m
Tue 24/1106:00 -
1 stop16h 40m
Deal found 18/8£794
Wed 4/1111:45 -
2 stops23h 05m
Thu 12/1106:30 -
2 stops20h 20m
Deal found 18/8£801

Find flight deals from Porto Alegre to Heathrow

Round-trip from

£760

One-way from

£323

Popular in

July

Cheapest in

November

Average price

£997
LATAM Airlines
  • LATAM Airlines
  • 26/9-2/10
  • 2 total stops
  • 36h 30m total
  • Porto Alegre to London
Search Deals
LATAM Airlines
  • LATAM Airlines
  • 6/11
  • 1 total stop
  • 15h 00m total
  • Porto Alegre to London
Search Deals
Highest demand for flights based on searches. 11% potential increase in price (£93 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£21 potential savings vs. average return price).
Search Deals
Average for round-trip flights in August 2026
Search Deals

Cheapflights Fare Finder

 
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

Fri 13/11

17:10-15:40

2 stops19h 30m

London Heathrow

Mon 23/11

16:30-22:30

2 stops33h 00m

£822

Porto AlegreLondon

POA Porto Alegre Salgado Filho - LHR London Heathrow

POALHR

Porto Alegre Salgado Filho

Fri 13/11

18:40-16:05

3 stops42h 25m

London Heathrow

Mon 23/11

08:55-07:00

2 stops25h 05m

£856

Porto AlegreLondon

POA Porto Alegre Salgado Filho - LHR London Heathrow

POALHR

Porto Alegre Salgado Filho

Tue 13/10

16:20-10:30

3 stops38h 10m

London Heathrow

Tue 3/11

06:30-23:50

2 stops20h 20m

£891

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 27/10

06:00-19:40

1 stop16h 40m

£957

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

18:30-00:25

2 stops32h 55m

£1,005

Porto AlegreLondon

POA Porto Alegre Salgado Filho - LHR London Heathrow

POALHR

Porto Alegre Salgado Filho

Mon 14/12

09:45-15:40

2 stops26h 55m

London Heathrow

Thu 24/12

16:30-22:45

2 stops33h 15m

£1,007

Porto AlegreLondon

POA Porto Alegre Salgado Filho - LHR London Heathrow

POALHR

Porto Alegre Salgado Filho

Mon 14/12

15:25-15:40

2 stops21h 15m

London Heathrow

Sat 26/12

16:30-09:05

2 stops43h 35m

£1,007
Fastest return journey

Porto AlegreLondon

POA Porto Alegre Salgado Filho - LHR London Heathrow

POALHR

Porto Alegre Salgado Filho

Sat 12/9

18:40-16:15

2 stops17h 35m

London Heathrow

Tue 22/9

08:40-00:40

2 stops20h 00m

£1,010

Porto AlegreLondon

POA Porto Alegre Salgado Filho - LHR London Heathrow

POALHR

Porto Alegre Salgado Filho

Sat 12/9

10:30-10:30

2 stops20h 00m

London Heathrow

Tue 22/9

08:40-10:50

2 stops30h 10m

£1,064

Porto AlegreLondon

POA Porto Alegre Salgado Filho - LHR London Heathrow

POALHR

Porto Alegre Salgado Filho

Mon 21/12

08:25-09:40

2 stops22h 15m

London Heathrow

Tue 12/1

16:30-07:55

2 stops42h 25m

£1,165

Flights are sorted by cheapest return flights first.

Deals found on 18/8

Showing 1-10 of 18 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

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 £649). Flying from Porto Alegre to London Heathrow Airport in July is currently the most expensive (average of £1,254). 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 £896 and £1,031 in September.
The cheapest return price found within the last 5 days was £760 on LATAM Airlines (26 Sept–2 Oct).

Related info for your journey

  • 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?

    LATAM Airlines and ITA Airways can get you from Porto Alegre to London Heathrow Airport in just under 17h 20m. Your travel time can differ by up to 8h 40m. 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 £649). Flying from Porto Alegre to London Heathrow Airport in July is currently the most expensive (average of £1,254). 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
Luton
Wembley
Gatwick
Slough
Ilford
Hayes
Croydon
Colchester
Eastbourne
Brentford
Northampton
Southend-on-Sea
Barnet
Enfield
Swindon
Kingston upon Thames
Southall
Salisbury

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for Porto Alegre to Heathrow

Porto Alegre to Gatwick flights

Fly with Cheapflights

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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.