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 18h 10m. Your travel time can differ by up to 7h 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.

What are the cheapest airlines flying from Porto Alegre to London Heathrow Airport round-trip?

Cheapflights users have booked flights from Porto Alegre to London Heathrow Airport round-trip from £764. Another airline that can offer you cheap pricing is TAP AIR PORTUGAL. LATAM Airlines is 21% cheaper than the average price of flights available within the next 90 days to this destination.

In terms of precipitation, rainfall in London Heathrow Airport ranges from 40.0 - 70.0 inches per month. January is typically the wettest month, when rainfall can reach 70.0 mm. July is typically the driest time to visit London Heathrow Airport when rainfall is around 40.0 mm.

If weather is an important factor for your trip to London Heathrow Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 C).

What is the cheapest time of day to fly from POA to LHR?

When flying from Porto Alegre to London Heathrow Airport, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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 2 different airlines.

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.

£276+ Cheap Flights from Porto Alegre to London Heathrow Airport

Cheap flight deals from Porto Alegre to Heathrow

Enter your travel dates to find the best prices.

Cheapest

Best

Last-minute

One-way

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 28 September 2026.

Tue 20/1017:45 -

1 stop17h 20m

Sat 21/1120:15 -

1 stop16h 45m

Deal found 24/9£544

Sun 18/1020:05 -

1 stop15h 00m

Sat 21/1120:15 -

1 stop15h 15m

Deal found 24/9£568

Thu 15/1020:05 -

1 stop15h 00m

Tue 24/1120:15 -

1 stop16h 45m

Deal found 24/9£572

Thu 15/1020:05 -

1 stop15h 00m

Sat 21/1120:15 -

1 stop15h 15m

Deal found 24/9£596

Wed 21/1020:05 -

1 stop15h 00m

Sat 21/1120:15 -

1 stop15h 15m

Deal found 24/9£601

Fri 16/1020:05 -

1 stop15h 00m

Tue 24/1120:15 -

1 stop16h 45m

Deal found 24/9£640

Fri 16/1020:05 -

1 stop15h 00m

Mon 23/1120:15 -

1 stop15h 15m

Deal found 24/9£664

Fri 16/1017:45 -

1 stop17h 20m

Thu 26/1120:15 -

1 stop15h 15m

Deal found 24/9£669

Sun 18/1020:05 -

1 stop15h 00m

Fri 20/1120:15 -

1 stop16h 45m

Deal found 24/9£674

Sat 17/1001:40 -

1 stop16h 20m

Mon 23/1118:30 -

1 stop28h 10m

Deal found 23/9£675

Sat 17/1001:40 -

1 stop17h 15m

Tue 24/1106:00 -

1 stop16h 40m

Deal found 23/9£679

Tue 17/1121:15 -

1 stop22h 25m

Tue 24/1106:00 -

1 stop16h 40m

Deal found 23/9£679

Find flight deals from Porto Alegre to Heathrow

Round-trip from	£544
One-way from	£276
Popular in	January
Cheapest in	November
Average price	£972

LATAM Airlines
18/10-25/11
2 total stops
31h 45m total
Porto Alegre to London

Search Deals

TAP AIR PORTUGAL
22/10-31/12
1 total stop
15h 50m total
Porto Alegre to London

Search Deals

Highest demand for flights based on searches. 9% potential increase in price (£74 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease (£26 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

Fri 6/11

05:10-17:35

2 stops33h 25m

London Heathrow

Wed 31/12

00:00-20:00

Nonstop0h 00m

£311

Porto AlegreLondon

POA Porto Alegre Salgado Filho - LHR London Heathrow

POALHR

Porto Alegre Salgado Filho

Sat 3/10

21:05-15:35

2 stops38h 30m

London Heathrow

Wed 31/12

00:00-20:00

Nonstop0h 00m

£419

Porto AlegreLondon

POA Porto Alegre Salgado Filho - LHR London Heathrow

POALHR

Porto Alegre Salgado Filho

Thu 4/3

14:15-14:35

2 stops21h 20m

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

Fri 6/11

18:40-16:05

3 stops42h 25m

London Heathrow

Wed 31/12

00:00-20:00

Nonstop0h 00m

£506

Porto AlegreLondon

POA Porto Alegre Salgado Filho - LHR London Heathrow

POALHR

Porto Alegre Salgado Filho

Mon 8/3

10:45-14:05

1 stop24h 20m

London Heathrow

Wed 31/12

00:00-20:00

Nonstop0h 00m

£625

Fastest return journey

Porto AlegreLondon

POA Porto Alegre Salgado Filho - LHR London Heathrow

POALHR

Porto Alegre Salgado Filho

Sun 31/1

18:00-14:05

1 stop17h 05m

London Heathrow

Wed 31/12

00:00-20:00

Nonstop0h 00m

£630

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

£630

Porto AlegreLondon

POA Porto Alegre Salgado Filho - LHR London Heathrow

POALHR

Porto Alegre Salgado Filho

Mon 30/11

05:40-10:30

2 stops25h 50m

London Heathrow

Mon 29/3

19:45-23:55

2 stops32h 10m

£818

Porto AlegreLondon

POA Porto Alegre Salgado Filho - LHR London Heathrow

POALHR

Porto Alegre Salgado Filho

Tue 26/1

19:40-10:30

2 stops35h 50m

London Heathrow

Tue 23/2

19:20-11:00

2 stops18h 40m

£842

Porto AlegreLondon

POA Porto Alegre Salgado Filho - LHR London Heathrow

POALHR

Porto Alegre Salgado Filho

Fri 6/11

11:45-14:25

2 stops23h 40m

London Heathrow

Wed 18/11

06:30-23:50

2 stops20h 20m

£908

Flights are sorted by cheapest return flights first.

Deals found on 24/9

Showing 1-10 of 15 resultsSorted by cheapest first

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.

POA-LHR

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 £665). Flying from Porto Alegre to London Heathrow Airport in January is currently the most expensive (average of £1,335). 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 LATAM Airlines and 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.

LATAM Airlines

7.4

Good

1,977 reviews

Check prices

Reviews

1 / 20

2.0

Mediocre

wizard,Jun 2026

GRU - DOH

It was a terrible experience, when I purchased the ticket, ot stated that I could have one carry on bag and one checked baggage, when I got to the airport they demanded a fee for the checked luggage of $328.00 or 1,705.00 bra real, of which I did not have and had to have a family member deposit it to me in order to pay this fee that was meant to be included, it caused a lot of stress for me and my family and I am very unhappy with this out right trickery. I feel something should be done to prevent other travelers from experiencing what I did, it is not fair.

LATAM Airlines

7.4

Good

1,977 reviews

LATAM Airlines

7.4

Good

1,977 reviews

Check prices

Reviews

1 / 20

2.0

Mediocre

wizard,Jun 2026

GRU - DOH

TAP AIR PORTUGAL

7.2

Good

2,384 reviews

LATAM Airlines

7.4

Good

1,977 reviews

Check prices

Reviews

1 / 20

2.0

Mediocre

wizard,Jun 2026

GRU - DOH

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 2 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 18h 10m. Your travel time can differ by up to 7h 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.
What are the cheapest airlines flying from Porto Alegre to London Heathrow Airport round-trip?
Cheapflights users have booked flights from Porto Alegre to London Heathrow Airport round-trip from £764. Another airline that can offer you cheap pricing is TAP AIR PORTUGAL. LATAM Airlines is 21% 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 £665). Flying from Porto Alegre to London Heathrow Airport in January is currently the most expensive (average of £1,335). 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.

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Top 2 airlines flying from Porto Alegre to Heathrow

Airline	Cheapest	Average	Flexibility	On-time
LATAM Airlines	Cheapest£764	Average£1,079	FlexibilityNo cancel fee	On-time81%	Search LATAM Airlines flights
TAP AIR PORTUGAL	Cheapest£805	Average£1,021	FlexibilityNo cancel fee	On-timeN/A	Search TAP AIR PORTUGAL flights

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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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Cheap flights from Porto Alegre to London Heathrow Airport from £276

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 22/10. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Porto Alegre to Heathrow

Cheapest flights from Porto Alegre to HeathrowExplore 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 28 September 2026.

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 28 September 2026.

Best flights from Porto Alegre to HeathrowDiscover carefully curated flight deals from Porto Alegre to Heathrow that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 28 September 2026.

Discover carefully curated flight deals from Porto Alegre to Heathrow that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 28 September 2026.

Last-minute flights from Porto Alegre to HeathrowDiscover last-minute flight deals from Porto Alegre to Heathrow. Data last updated 28 September 2026 and is based on user searches.

Discover last-minute flight deals from Porto Alegre to Heathrow. Data last updated 28 September 2026 and is based on user searches.

One-way flights from Porto Alegre to HeathrowSearch for one-way flight options from Porto Alegre to Heathrow. Find affordable one-way fares based on user searches. Data last updated 28 September 2026.

Search for one-way flight options from Porto Alegre to Heathrow. Find affordable one-way fares based on user searches. Data last updated 28 September 2026.

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Use the filters below to find and compare flights from Porto Alegre to London Heathrow Airport that are best for you.

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.

Cheapflights Insights

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

Reviews of airlines servicing Heathrow

Check out reviews from past customers who have flown with LATAM Airlines and 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.

Related info for your journey

What airport do you fly from for flights from Porto Alegre to London Heathrow?

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

What are the cheapest airlines flying from Porto Alegre to London Heathrow Airport round-trip?

Can I find deals for flights from Porto Alegre to Heathrow that include hotel bookings?

How can I find direct flights from Porto Alegre to Heathrow?

Can I find deals for business class flights from Porto Alegre to Heathrow?

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

Travelling to a place near London Heathrow Airport?

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Alternative routes for Porto Alegre to Heathrow

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Direct flights to England

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Search flights from Porto Alegre to Heathrow by cabin class

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Other flights to Heathrow

Explore flights to Heathrow departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 28 September 2026.

Porto Alegre and Heathrow flights

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Top 2 airlines flying from Porto Alegre to Heathrow

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Why should you use Cheapflights to find cheap flight tickets from Porto Alegre to Heathrow?

Can Cheapflights find flights from Porto Alegre to Heathrow with no change fees?

Can Cheapflights notify me if prices for flights from Porto Alegre to Heathrow become cheaper?

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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 28 September 2026.

Best flights from Porto Alegre to Heathrow
Discover carefully curated flight deals from Porto Alegre to Heathrow that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 28 September 2026.

Last-minute flights from Porto Alegre to Heathrow
Discover last-minute flight deals from Porto Alegre to Heathrow. Data last updated 28 September 2026 and is based on user searches.

One-way flights from Porto Alegre to Heathrow
Search for one-way flight options from Porto Alegre to Heathrow. Find affordable one-way fares based on user searches. Data last updated 28 September 2026.