LHR - POA

£487 Find Cheap Flights from London Heathrow Airport to Porto Alegre

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Heathrow to Porto Alegre departing on 3/11. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to Porto Alegre

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from London to Porto Alegre, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from London to Porto Alegre, as well as popular online travel agencies
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Flight Deals

Cheap Flights from Heathrow to Porto Alegre (LHR-POA)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Heathrow to Porto Alegre that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from Heathrow to Porto Alegre

Thu, 13 Nov - Sat, 29 Nov
TAP AIR PORTUGAL Logo
06:00 - 19:20LHR-POA
16h 20m1 stop
TAP AIR PORTUGAL Logo
21:10 - 18:55POA-LHR
18h 45m1 stop
£706TAP AIR PORTUGAL
Find Deal
Fri, 14 Nov - Sun, 30 Nov
 Logo
19:25 - 23:25LHR-POA
31h 00m2 stops
 Logo
10:25 - 13:45POA-LHR
24h 20m2 stops
Sat, 31 Jan - Sat, 14 Feb
LATAM Airlines Logo
09:10 - 00:40LHR-POA
18h 30m2 stops
LATAM Airlines Logo
19:30 - 14:05POA-LHR
39h 35m2 stops
£801LATAM Airlines
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Sat, 8 Nov - Sat, 22 Nov
TAP AIR PORTUGAL Logo
06:00 - 19:40LHR-POA
16h 40m1 stop
TAP AIR PORTUGAL Logo
21:10 - 15:30POA-LHR
15h 20m1 stop
£821TAP AIR PORTUGAL
Find Deal
Thu, 13 Nov - Mon, 1 Dec
LATAM Airlines Logo
20:15 - 17:05LHR-POA
23h 50m1 stop
LATAM Airlines Logo
06:40 - 14:05POA-LHR
28h 25m1 stop
£843LATAM Airlines
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Wed, 29 Oct - Wed, 5 Nov
KLM Logo
06:30 - 23:30LHR-POA
20h 00m2 stops
KLM Logo
17:45 - 13:50POA-LHR
17h 05m2 stops
£887KLM
Find Deal
Thu, 13 Nov - Mon, 1 Dec
Air Canada Logo
13:25 - 16:35LHR-POA
30h 10m2 stops
Air Canada Logo
15:25 - 07:10POA-LHR
36h 45m2 stops
£899Air Canada
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Thu, 13 Nov - Sun, 30 Nov
Air Canada Logo
13:25 - 16:35LHR-POA
30h 10m2 stops
Air Canada Logo
11:15 - 07:10POA-LHR
40h 55m2 stops
£949Air Canada
Find Deal
Sat, 15 Nov - Sat, 29 Nov
Air France Logo
06:20 - 10:35LHR-POA
31h 15m2 stops
Air France Logo
19:20 - 13:45POA-LHR
39h 25m2 stops
£951Air France
Find Deal
Thu, 25 Sep - Sun, 5 Oct
KLM Logo
08:40 - 00:50LHR-POA
20h 10m2 stops
KLM Logo
17:05 - 17:35POA-LHR
20h 30m2 stops
£960KLM
Find Deal

Everything you should know

Top airlines
TAP AIR PORTUGAL
Cheapest • from £706 (return)
LATAM Airlines
Best reviews • 7.5 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
2 weeks
in advance
Our data shows that travellers who book at least 2 weeks in advance save around 18% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
February
Cheapest • 18% price drop
December
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Cheapest return fare
£706
Overall average: £1,121
TAP AIR PORTUGAL
Thu 13/11Sat 29/11
LHR - POA • 1 stop
Cheapest one-way flight
£487
Typical prices: £670-683
Multi-carrier
Mon 3/11
LHR - POA • 2 stops
Start a new search
KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you love your trip to Porto Alegre!
Booking Insights

KAYAK's insights & trends for Heathrow to Porto Alegre flights

Get data-powered insights and trends into flights from Heathrow to Porto Alegre to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly from London Heathrow Airport to Porto Alegre?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from London Heathrow Airport to Porto Alegre, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from London Heathrow Airport to Porto Alegre is February, where tickets cost £801 (return) on average. On the other hand, the most expensive months are July and December, where the average cost of round-trip tickets is £1,294 and £1,129 respectively.

How far in advance should I book a flight from London Heathrow Airport to Porto Alegre?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from London Heathrow Airport to Porto Alegre, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from London Heathrow Airport to Porto Alegre, you should book around 2 weeks before departure, which saves you about 18% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 19 weeks before departure.

Good to know - Cheap tickets from London Heathrow Airport to Porto Alegre

Low seasonJune
Cheapest flight£487
Best time to beat the crowds (3% less expensive on average)
Most popular time to fly (15% more expensive on average)
Flight from London Heathrow Airport to Porto Alegre

When to book flights from Heathrow to Porto Alegre

Are your dates flexible? Find out the best times to travel from Heathrow to Porto Alegre based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking London Heathrow Airport to Porto Alegre flights

  • What is the cheapest flight from London Heathrow Airport to Porto Alegre?

    In the last 3 days, the lowest price for a flight from London Heathrow Airport to Porto Alegre was £662 for a one-way ticket and £959 for a return.

  • Which airports will I be using when flying from London Heathrow Airport to Porto Alegre?

    When flying out of London Heathrow Airport you will be using London Heathrow. You will be landing at Porto Alegre, also known as Porto Alegre Salgado Filho.

  • Which aircraft models fly most regularly from London Heathrow Airport to Porto Alegre?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from London Heathrow Airport to Porto Alegre?

    Star Alliance, SkyTeam, and oneworld are the airline alliances operating flights between London Heathrow Airport and Porto Alegre, with Star Alliance being the most commonly used for this route.

  • Which is the best airline for flights from London to Porto Alegre, LATAM Airlines or Air France?

    The two airlines most popular with KAYAK users for flights from London to Porto Alegre are LATAM Airlines and Air France. With an average price for the route of £933 and an overall rating of 7.5, LATAM Airlines is the most popular choice. Air France is also a great choice for the route, with an average price of £745 and an overall rating of 7.4.

  • How does KAYAK find such low prices on flights from London Heathrow Airport to Porto Alegre?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from London Heathrow Airport to Porto Alegre.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from London Heathrow Airport to Porto Alegre?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Porto Alegre from London Heathrow Airport is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights from London Heathrow Airport to Porto Alegre?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to Porto Alegre with an airline and back to London Heathrow Airport with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from London Heathrow Airport to Porto Alegre?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Porto Alegre from London Heathrow Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 3 airlines flying from Heathrow to Porto Alegre

 
See real verified KAYAK customer reviews for airlines flying from London to Porto Alegre. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Heathrow to Porto Alegre? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.5
LATAM AirlinesOverall score based on 1847 reviews
7.0Entertainment
8.0Crew
7.4Comfort
6.7Food
7.6Boarding
Airline reviews

I’m entitled to a refund per LATAM due to the mid flight itinerary change and being stuck in São Paulo for 24 hours and needing to get a hotel. The airline was dismissive and of no help.

2.0 MediocreAnonymous, Aug 2025GIG - GRU
Read more LATAM Airlines reviews

I’m entitled to a refund per LATAM due to the mid flight itinerary change and being stuck in São Paulo for 24 hours and needing to get a hotel. The airline was dismissive and of no help.

The flight was late. Please do not delay next time.

I couldn't travel, now I can't get a refund and to change the date I have to pay an absurd fine.

Boarding was confusing with a delayed flight because there was no English translation

My biggest complaint is the comfort. I am not tall and there was no legroom. It was very uncomfortable. During my transfer in Sao Paola, the flight was slightly delayed so boarding was confusing because there were no instructions in English.

Bought a ticket that included a bag and they still charged me to check it in, latam is the worst airline.

I never got this flight. You sent me to Chile!!! And from Chile I got the other flight to São Paulo... I've arrived 7h latter than I was supposed to arrive because of Delta delays.

Lost ,y connection due to a mechanical delay, huge line to get new connection and vouchers

entertainment was not good; the shoulder strap on Business class seat did not sit well across the body (more like across the neck); the food was not hot and the special meal promoted by insert in the menu was not available to us

The boarding and new bag drop-off process was confusing and causing massive delays.

I bought business class tickets but the seats are exactly like economy with no comfort seats nor an empty seat next to me provided. Very poor, low quality airline.

I don't understand the concept of paying to get your personal luggage onboard and then asked to check it in.... either sell the space or don't, its a hassle to carry those all through the airport just to make a check in at the last minute.

It was a great experience. The only thing I would have changed was that the bathrooms were never cleaned and they got very dirty.

It was an OK flight with below mediocre service by their flight attendants

Wasted a lot of time trying to find the CDG lounge - it was not next to the connecting flight gate like the Air France staff said.

My experience was good overall, the quality of the food really decreased! There used to be a choice between meat and fish now it’s between chicken and pasta! In the choices of entertainment meditation has been added which is very good. Soft chair workout to improve blood circulation and avoid phlebitis should be added.

The only reason the overall rating wasn't "excellent" was due to problems in claiming luggage. The bags are delivered to the main area (Cinta 35) for domestic passengers, but to a DIFFERENT ROOM for international arrivees. After waiting 30 minutes, someone (who didn't appear to be from Air France or the airport) told us to go to another area. There we found our bags, which appeared to have been awaiting us for a while. We had to go through a bag check before leaving the airport. If we had been alerted to this possibility, or better yet, been to go directly to Cinta 34, we could have eliminated quite a bit of waiting.

Much better than the major US Carriers especially in Biz Class.

I wish that the meal included a vegetable or even a salad instead of couscous! Why serve chicken with rice AND couscous? Service was good overall though a bit lacking in friendliness. Usually on air france I've been offered a glass of champagne before dinner, wine with dinner, and a digestif after dinner. We were only offered wine this time!

It was not Air France but Air Europa. But confusion over our checked luggage. Whether it was checked all the way to Tenerife or not. It was not. Had to line up again in Departures. At least our Sky Priority was honoured. Flight was fine.

I will avoid TAP if I can, the ground experience was very poor with bad behaviour from the ground crew and it was only a bit better on the aircraft.

I had a business class ticket from EWR to Madrid with a layover at LIS for 11 hours. It was obvious that I needed to pick up my luggage in Lisbon for 11 hours and check it in again when boarding the second flight to Madrid. Before buying the ticket, I called TAP customer service. Customer service assured me that I could get my luggage in Lisbon. When I arrived at Newark airport, I immediately asked to check my luggage to Lisbon. However, the TAP employee refused me, saying that I should resolve this issue upon arrival in Lisbon. She checked my luggage to Madrid. I asked the TAP employee at the gate to help me when boarding the plane, I asked the flight attendants manager on board the plane to help me. All the employees refused to help me and said that I should resolve this issue in Lisbon. It took me 4 hours to resolve this issue in Lisbon. I arrived at 11am and they didn't give me my luggage until 3pm. As a result, I was so tired after a sleepless night on the plane and 4 hours on my feet at the airport and all my plans were ruined that I couldn't fly to Madrid. It was a terrible experiance,

Check-in guidance for transfer flight, boarding, in-flight service, seat comfort, etc.

Very rude person at the boarding desk; flight attendant coughing 3 inches from my face three times- not even covering her mouth; boarding process very unacceptable for older people with stairs to all planes (are you all stuck in the 1960’s?). I am sure that I am not remembering all of the negative things, but I am sure you get the message!

There was chaos at the Naples airport. We arrived three hours early for the flight but there was no invitation available about where to go to check bags until an hour later. Then we had to go to a different terminal to check our bags and check in and back to the first to board.

Flight being delayed for 35 minutes had me lose the connection to my transport

boarding is so disorganized, i was literally appalled at the boarding experience

Tap air Portugal was the best I will traveling again with u guys. Thank u.

The long wait at JFK made the trip horrible. Also not having enough buses when we deplaned was annoying

Terrible! I had to cancel our flights due to my wife Carmen requiring an unexpected second cancer surgery. I first contacted orbitz about obtaining a credit due to medical interruption and orbitz directed me to TAP. I contacted TAP and the representative directed me back to orbitz and refused to even explain what TAP’s medical interruption policy was or how it worked—I wanted that information for a second call to orbitz. Terrible service at a particularly difficult time.

Everything you need to know for your flight from Heathrow to Porto Alegre

Information on your arrival and departure airports

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