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Cheap flights from Porto Alegre to London Heathrow Airport from £271

POA — LHR
14 Nov — 21 Nov1
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

Tue 17/1121:15 -
1 stop22h 25m
Tue 24/1106:00 -
1 stop16h 40m
Deal found 10/10£708
Tue 10/1121:15 -
1 stop21h 20m
Tue 24/1106:00 -
1 stop16h 40m
Deal found 13/10£713
Tue 17/1111:30 -
2 stops23h 35m
Tue 24/1120:15 -
1 stop26h 00m
Deal found 14/10£726
Thu 12/1101:30 -
1 stop17h 05m
Thu 26/1106:00 -
1 stop16h 20m
Deal found 12/10£727
Wed 18/1115:35 -
1 stop19h 30m
Mon 23/1120:15 -
1 stop19h 00m
Deal found 10/10£730
Tue 10/1121:15 -
1 stop17h 15m
Mon 30/1113:40 -
1 stop33h 00m
Deal found 13/10£743
Tue 10/1121:15 -
1 stop17h 15m
Fri 20/1118:30 -
1 stop28h 10m
Deal found 10/10£745

Find flight deals from Porto Alegre to Heathrow

Round-trip from

£708

One-way from

£271

Popular in

January

Cheapest in

November

Average price

£860
TAP AIR PORTUGAL
  • TAP AIR PORTUGAL
  • 17/11-24/11
  • 2 total stops
  • 39h 05m total
  • Porto Alegre to London
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TAP AIR PORTUGAL
  • TAP AIR PORTUGAL
  • 24/10-31/12
  • 1 total stop
  • 18h 25m total
  • Porto Alegre to London
Search Deals
Highest demand for flights based on searches. 6% potential increase in price (£51 potential increase over avg. return price).
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Cheapest flight prices on average. 3% potential price decrease (£27 potential savings vs. average return price).
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Average for round-trip flights in October 2026
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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
Fastest return journey

Porto AlegreLondon

POA Porto Alegre Salgado Filho - LHR London Heathrow

POALHR

Porto Alegre Salgado Filho

Tue 8/12

18:00-14:05

1 stop17h 05m

London Heathrow

Wed 31/12

00:00-20:00

Nonstop0h 00m

£405

Porto AlegreLondon

POA Porto Alegre Salgado Filho - LHR London Heathrow

POALHR

Porto Alegre Salgado Filho

Thu 10/12

17:40-18:55

3 stops22h 15m

London Heathrow

Wed 31/12

00:00-20:00

Nonstop0h 00m

£448

Porto AlegreLondon

POA Porto Alegre Salgado Filho - LHR London Heathrow

POALHR

Porto Alegre Salgado Filho

Wed 9/12

09:20-14:05

1 stop25h 45m

London Heathrow

Wed 31/12

00:00-20:00

Nonstop0h 00m

£453

Porto AlegreLondon

POA Porto Alegre Salgado Filho - LHR London Heathrow

POALHR

Porto Alegre Salgado Filho

Mon 8/3

11:45-14:35

2 stops23h 50m

London Heathrow

Wed 31/12

00:00-20:00

Nonstop0h 00m

£457

Porto AlegreLondon

POA Porto Alegre Salgado Filho - LHR London Heathrow

POALHR

Porto Alegre Salgado Filho

Wed 17/2

11:45-14:35

2 stops23h 50m

London Heathrow

Wed 31/12

00:00-20:00

Nonstop0h 00m

£457

Porto AlegreLondon

POA Porto Alegre Salgado Filho - LHR London Heathrow

POALHR

Porto Alegre Salgado Filho

Mon 8/3

09:15-14:05

1 stop25h 50m

London Heathrow

Wed 31/12

00:00-20:00

Nonstop0h 00m

£628

Porto AlegreLondon

POA Porto Alegre Salgado Filho - LHR London Heathrow

POALHR

Porto Alegre Salgado Filho

Wed 17/2

16:05-14:05

1 stop19h 00m

London Heathrow

Wed 31/12

00:00-20:00

Nonstop0h 00m

£629

Porto AlegreLondon

POA Porto Alegre Salgado Filho - LHR London Heathrow

POALHR

Porto Alegre Salgado Filho

Sun 7/3

04:20-07:40

3 stops24h 20m

London Heathrow

Wed 31/12

00:00-20:00

Nonstop0h 00m

£647

Porto AlegreLondon

POA Porto Alegre Salgado Filho - LHR London Heathrow

POALHR

Porto Alegre Salgado Filho

Thu 4/3

18:30-18:20

3 stops44h 50m

London Heathrow

Wed 31/12

00:00-20:00

Nonstop0h 00m

£653

Porto AlegreLondon

POA Porto Alegre Salgado Filho - LHR London Heathrow

POALHR

Porto Alegre Salgado Filho

Thu 24/12

01:30-21:35

1 stop17h 05m

London Heathrow

Wed 31/12

00:00-20:00

Nonstop0h 00m

£686

Flights are sorted by cheapest return flights first.

Deals found on 13/10

Showing 1-10 of 20 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 £666). Flying from Porto Alegre to London Heathrow Airport in January is currently the most expensive (average of £1,337). 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 typical for this route at the moment.

Porto Alegre to London Heathrow Airport flights typically cost between £696 and £1,080 in November.
The cheapest return price found within the last 5 days was £708 on TAP AIR PORTUGAL (17 Nov–24 Nov).

Reviews of airlines servicing Heathrow

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
7.4
Good
1,972 reviews
Check prices

Entertainment

7.0

Food

6.7

Overall

7.4

Boarding

7.5

Comfort

7.3

Crew

8.0

Reviews

1 / 20
2.0
Mediocre

Anonymous,Oct 2026

GRU - JNB

No communication from captain about the delay long waiting time. Shitty airline with incompetent employees especially employees from Brazil.
LATAM Airlines
7.4
Good
1,972 reviews
LATAM Airlines
7.4
Good
1,972 reviews
Check prices

Entertainment

7.0

Food

6.7

Overall

7.4

Boarding

7.5

Comfort

7.3

Crew

8.0

Reviews

1 / 20
2.0
Mediocre

Anonymous,Oct 2026

GRU - JNB

No communication from captain about the delay long waiting time. Shitty airline with incompetent employees especially employees from Brazil.

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 22h 25m. Your travel time can differ by up to 14h 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 £765. LATAM Airlines is 19% 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 £666). Flying from Porto Alegre to London Heathrow Airport in January is currently the most expensive (average of £1,337). 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?

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Alternative routes for Porto Alegre to Heathrow

Porto Alegre to Gatwick flights

Top airline flying from Porto Alegre to Heathrow

AirlineCheapestAverageFlexibilityOn-time
LATAM AirlinesCheapest£765Average£1,081FlexibilityNo cancel feeOn-time81%
Search LATAM Airlines flights

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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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