Find flights
When to book
Airlines
FAQs

Cheap flights from Porto Alegre to London Heathrow Airport from £335

POA — LHR
1 Oct — 8 Oct1
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

Fri 13/1110:40 -
2 stops26h 00m
Mon 23/1110:30 -
2 stops39h 00m
Deal found 28/8£782
Fri 27/1114:00 -
2 stops22h 40m
Thu 18/216:30 -
2 stops33h 15m
Deal found 29/8£787
Wed 4/1105:00 -
2 stops30h 05m
Tue 24/1120:15 -
2 stops23h 55m
Deal found 27/8£788
Tue 27/1016:05 -
1 stop19h 00m
Tue 10/1120:15 -
1 stop26h 00m
Deal found 1/9£801
Mon 2/1111:45 -
2 stops23h 05m
Fri 13/1106:30 -
2 stops30h 45m
Deal found 1/9£802
Fri 13/1119:40 -
2 stops41h 25m
Mon 23/1106:30 -
2 stops20h 20m
Deal found 31/8£804
Thu 12/1100:45 -
1 stop17h 50m
Mon 23/1118:30 -
1 stop28h 10m
Deal found 28/8£805

Find flight deals from Porto Alegre to Heathrow

Round-trip from

£782

One-way from

£335

Popular in

July

Cheapest in

November

Average price

£1,109
ITA Airways
  • ITA Airways
  • 13/11-23/11
  • 4 total stops
  • 65h 00m 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 (£90 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£20 potential savings vs. average return price).
Search Deals
Average for round-trip flights in September 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

Mon 2/11

11:45-13:50

2 stops23h 05m

London Heathrow

Fri 13/11

06:30-10:15

2 stops30h 45m

£802

Porto AlegreLondon

POA Porto Alegre Salgado Filho - LHR London Heathrow

POALHR

Porto Alegre Salgado Filho

Fri 13/11

19:40-16:05

2 stops41h 25m

London Heathrow

Mon 23/11

06:30-23:50

2 stops20h 20m

£804

Porto AlegreLondon

POA Porto Alegre Salgado Filho - LHR London Heathrow

POALHR

Porto Alegre Salgado Filho

Thu 12/11

00:45-21:35

1 stop17h 50m

London Heathrow

Mon 23/11

18:30-19:40

1 stop28h 10m

£808

Porto AlegreLondon

POA Porto Alegre Salgado Filho - LHR London Heathrow

POALHR

Porto Alegre Salgado Filho

Mon 2/11

14:15-13:50

2 stops20h 35m

London Heathrow

Thu 26/11

06:30-23:50

2 stops20h 20m

£842

Porto AlegreLondon

POA Porto Alegre Salgado Filho - LHR London Heathrow

POALHR

Porto Alegre Salgado Filho

Thu 17/12

17:20-16:35

2 stops20h 15m

London Heathrow

Mon 28/12

06:30-23:50

2 stops20h 20m

£974
Fastest return journey

Porto AlegreLondon

POA Porto Alegre Salgado Filho - LHR London Heathrow

POALHR

Porto Alegre Salgado Filho

Mon 21/9

18:45-17:35

2 stops18h 50m

London Heathrow

Mon 5/10

08:40-00:40

2 stops20h 00m

£987

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

£994

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

£997

Porto AlegreLondon

POA Porto Alegre Salgado Filho - LHR London Heathrow

POALHR

Porto Alegre Salgado Filho

Fri 18/9

17:10-11:55

2 stops38h 45m

London Heathrow

Mon 28/9

11:05-16:25

2 stops33h 20m

£1,037

Porto AlegreLondon

POA Porto Alegre Salgado Filho - LHR London Heathrow

POALHR

Porto Alegre Salgado Filho

Thu 3/12

12:30-14:25

3 stops46h 55m

London Heathrow

Sun 13/12

06:30-23:50

2 stops20h 20m

£1,079

Flights are sorted by cheapest return flights first.

Deals found on 27/8

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

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 £650). Flying from Porto Alegre to London Heathrow Airport in July is currently the most expensive (average of £1,257). 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.

Reviews of airlines servicing Heathrow

Check out reviews from past customers who have flown with TAP AIR PORTUGAL 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.
TAP AIR PORTUGAL
7.2
Good
2,378 reviews
Check prices

Crew

7.8

Comfort

7.2

Entertainment

6.4

Food

6.3

Overall

7.2

Boarding

7.0

Reviews

1 / 20
4.0
Okay

Bhairav,Jun 2026

LHR - LIS

Flew business. Uncomfortable seats and so so food and drink. Only thing attractive was the price.
TAP AIR PORTUGAL
7.2
Good
2,378 reviews
TAP AIR PORTUGAL
7.2
Good
2,378 reviews
Check prices

Crew

7.8

Comfort

7.2

Entertainment

6.4

Food

6.3

Overall

7.2

Boarding

7.0

Reviews

1 / 20
4.0
Okay

Bhairav,Jun 2026

LHR - LIS

Flew business. Uncomfortable seats and so so food and drink. Only thing attractive was the price.

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 1 airline.

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

    GOL, TAP AIR PORTUGAL, and KLM can get you from Porto Alegre to London Heathrow Airport in just under 17h 35m. Your travel time can differ by up to 23h 50m. 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 £787. TAP AIR PORTUGAL is 18% 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, November is the cheapest month in which you can book a flight from Porto Alegre to London Heathrow Airport (average of £650). Flying from Porto Alegre to London Heathrow Airport in July is currently the most expensive (average of £1,257). 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
Gatwick
Wembley
Slough
Ilford
Hayes
Croydon
Northampton
Colchester
Eastbourne
Brentford
Barnet
Salisbury
Southall
Southend-on-Sea
Enfield
Kingston upon Thames
Watford

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for Porto Alegre to Heathrow

Porto Alegre to Gatwick flights

Top airline flying from Porto Alegre to Heathrow

AirlineCheapestAverageFlexibilityOn-time
TAP AIR PORTUGALCheapest£787Average£999FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL 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.