LHR - POA

£398 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 2/5. 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, 0 bags

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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Everything you should know

Cheapest return fare
£750
Overall average: £884
Multiple Airlines
Fri 8/5Sat 23/5
LHR - POA • 2 stops
Cheapest one-way flight
£411
Multiple Airlines
Sat 2/5
LHR - POA • 3 stops
Top airlines
LATAM Airlines
Cheapest • from £795 (return)
LATAM Airlines
Best reviews • 7.5 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to travel
April
Cheapest • 21% price drop
December
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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!
Flight Deals
Booking Insights
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

Fri, 8 May - Sat, 23 May
Multiple Airlines Logo
16:30 - 10:35
LHR
-
POA
22h 05m
2 stops
Multiple Airlines Logo
06:25 - 09:40
POA
-
LHR
23h 15m
2 stops
£750Multiple Airlines
Mon, 2 Mar - Thu, 19 Mar
LATAM Airlines Logo
20:15 - 09:20
LHR
-
POA
16h 05m
1 stop
LATAM Airlines Logo
17:55 - 14:05
POA
-
LHR
17h 10m
1 stop
£795LATAM Airlines
Mon, 2 Mar - Thu, 19 Mar
LATAM Airlines Logo
20:15 - 09:20
LHR
-
POA
16h 05m
1 stop
LATAM Airlines Logo
17:55 - 14:05
POA
-
LHR
17h 10m
1 stop
£804LATAM Airlines
Mon, 2 Mar - Tue, 2 Jun
LATAM Airlines Logo
20:15 - 17:05
LHR
-
POA
23h 50m
1 stop
LATAM Airlines Logo
17:50 - 15:05
POA
-
LHR
17h 15m
1 stop
£810LATAM Airlines
Thu, 12 Mar - Thu, 19 Mar
LATAM Airlines Logo
06:15 - 23:55
LHR
-
POA
20h 40m
2 stops
LATAM Airlines Logo
17:55 - 14:05
POA
-
LHR
17h 10m
1 stop
£818LATAM Airlines
Mon, 2 Mar - Tue, 2 Jun
LATAM Airlines Logo
20:15 - 14:05
LHR
-
POA
20h 50m
1 stop
LATAM Airlines Logo
17:50 - 15:05
POA
-
LHR
17h 15m
1 stop
£822LATAM Airlines
Thu, 12 Mar - Thu, 19 Mar
Air France Logo
06:20 - 23:40
LHR
-
POA
20h 20m
2 stops
Air France Logo
13:40 - 13:45
POA
-
LHR
21h 05m
2 stops
£824Air France
Mon, 2 Mar - Thu, 19 Mar
LATAM Airlines Logo
06:55 - 00:40
LHR
-
POA
20h 45m
2 stops
LATAM Airlines Logo
17:55 - 14:05
POA
-
LHR
17h 10m
1 stop
£825LATAM Airlines
Thu, 26 Feb - Mon, 30 Mar
Multiple Airlines Logo
09:00 - 13:15
LHR
-
POA
31h 15m
2 stops
Multiple Airlines Logo
21:55 - 16:35
POA
-
LHR
38h 40m
2 stops
£826Multiple Airlines
Fri, 27 Feb - Fri, 13 Mar
Multiple Airlines Logo
06:00 - 08:00
LHR
-
POA
29h 00m
2 stops
Multiple Airlines Logo
04:40 - 14:05
POA
-
LHR
30h 25m
1 stop
£830Multiple Airlines
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 April, where tickets cost £729 (return) on average. On the other hand, the most expensive months are July and December, where the average cost of round-trip tickets is £1,274 and £1,097 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 1 week before departure. 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£411
Best time to beat the crowds but there is an average 2% increase in price.
Most popular time to fly (19% 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 £411 for a one-way ticket and £750 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?

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

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

    The two airlines most popular with KAYAK users for flights from London to Porto Alegre are LATAM Airlines and Virgin Atlantic. With an average price for the route of £988 and an overall rating of 7.5, LATAM Airlines is the most popular choice. Virgin Atlantic is also a great choice for the route, with an average price of £1,543 and an overall rating of 7.5.

  • 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 1915 reviews
7.0Entertainment
6.7Food
7.5Boarding
8.0Crew
7.3Comfort
Airline reviews

We were not allowed to carry a bottle of water onto the 8 hour flight.

8.0 ExcellentAnonymous, Jan 2026
MDZ - LIM
Read more LATAM Airlines reviews

We were not allowed to carry a bottle of water onto the 8 hour flight.

There was a mechanical issue with the plane that they had to work on before we could take off. That's fine, by all means, PLEASE make sure the mechanics are functioning properly. What was a problem was the fact that we sat on the tarmac for 4.5 hours without moving, without letting us off the plane, and without climate control and air running through the plane. There was no explanation as to what was going on; they just kept promising that it would be "15 minutes, then we are on our way." At one point, they even switched the entire crew out and told everyone we just needed to wait for new employees to show up. Then, as the 4 hours were not moving, an hour before the full refund, they made a big show about "the flight starting and the doors are locked, so you have to sit down." We didn't move for another 40 minutes; they were just trying to skirt around legalities that entitled us to restitution. When the flight finally was underway, the plane was gigantic but cramped in design, my entertainment screen kept freezing and glitching, and subtitles didn't work, and the crew was passive-aggressive. Terrible flight.

LATAM’s crews are fine, but God help you if you need any customer service. Their app and website never work, with error after error. Trying to solve anything over the phone is painful, and lastly, the boarding pass LATAM gave me to board the flight with Delta was invalid and I had to purchase an emergency one-way ticket at the last minute to get home.

I booked a flight through Kayak to Brazil I have traveled to Brazil several times before Kayak Delta or LATAM never mentioned during the booking or in the pre flight process that the visa requirements to visit Brazil have changed earlier this year. I was unaware of this change and as such never got a visa and was unable to fly from JFK to Sao Paulo Add to this that Delta allowed me to fly from Boston to JFK which they should not have as I didn’t have a visa. It has been a terrible experience and a huge loss of money

The assistance we received and the flight itself was wonderful. We will fly with LATAM airlines again, in the future.

Poor, the airline was not able to help me move flights.

The way the Pilot made all announcements, specially the way he congratulated the entire crew as the best team ever, making a comment that due to them they were able to shorter the delay to the destination. Amazing flight .

Just to drop my already labeled bag it took 50 minutes inline. Completely disappointed with Latam operation at GRU

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.

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

Food has been disappointing in both legs of flight to india

Great staff great experience, made a 2 hour delay very bearable

Great staff, great experience, made a 2 hour delay very bearable

Food was the worst I’ve had on a VA flight. Normally it’s a lot better

I was my pleasure to fly virgin on my birthday for my first solo trip ever 🫶🏼

These are one of the older seat arrangements facing away from the windows! Not particularly convenient sets. No storage spaces. NO COAT HANGING HOOKS. Inconvenient business class seat compared to any other airlines of similar class. Staff are excellent! Extremely professional, friendly. Food is good too.

Overall, flight was excellent but check in was very slow for Premium Economy. Economy queue was shorter but we weren't allowed to use it.

The staff was not very polite but the flight was very very nice and comfortable and the entertainment was great

Great crew - old style upper class seats on the older fleet now feels dated

Premium economy more comfortable than economy, but not by much. Did was awful, do not try the omelette. Flight crew were helpful. Flight was delayed by over an hour. Overall but bad, arrived safely and thank God.

Late. Lack of updates. Rude hostesses. Terrible food. Lack of headphones.

The value is there, but the layovers in Lisbon were not great. The passport control was so bad that a 2 hour layover became very tight and on the return the Terminal was barebones which made it a long 3 hours.

I was disappointed of the crew, not friendly and attentive. Delay one way for fuel leakage and the plane is so hot. Not that great all around but I’m glad I experienced it so now know better.

Poor. Our flight was delayed and they told me I would be fine to make my connection in Lisbon, I missed it. Then they told me my bag would be automatically loaded onto my new flight to rome. It wasn’t. It’s been 4 days and I still don’t have it.

Flew Business class and did not like anything, flight attendants were rude and not helpful. Food was of poor quality and I did not eat meals.

Wonderful just hope the had more direct flights to Boston

Very borderline, low budget airline without low budget prices There are no counts of soda, everything is dispensed enlarged bottles and poured into tiny cups about 70 mL so in order to keep hydrated you have to take 3-4 cups at a time. Also, there was only one food item offered, pasta, they ran out of chicken right away. Snack was very poor. It was called tuna sandwich, which is truly borderline. The flight attend attendance seemed to be overworked and tired.

There was no warning that they have added passport control after check in, the line was enormous and after 46 mins wait we missed our flight. Were forced to leave the airport and purchase new tickets at full price to board a later flight. TAP were unsympathetic and unhelpful.

Boarding we were jammed into a hot crowded bus waiting too long while another bus went in front of us. Appreciated blanket and pillow, movie available helped time pass, the food was not appealing so I had my own snacks, the flight is long, but nothing they can do about that. Staff adequate, flight good.

Didn't like much. Wheelchair assistance was almost nonexistent. No one at TAP check in process helpful. On the plane, stewards were not friendly and disorganized. Food was terrible for 8 hr flight. We were skipped at snack time and even though we tried to get attention using overhead call system no one even looked up at us to acknowledge. Being at the back of first section and by the lavatory we only were able to request when they came to pick up everyone else's garbage and they were nonchalant...no apology or even choice. The 1/2 half bread with slice of cheese was a waste. Deplaning was horrible but I'll blame lisbon airport for that. Plane left late at made good time still arrived about 15 behind schedule and for using remote deplaning and bus to terminal took another 20 min to gate. Those with connections were highly stressed. Took us 2 hrs from landing to get to ground transportation and exit airport. And that was with wheelchair assistance.

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

Information on your arrival and departure airports