POA - LHR

£424 Find Cheap Flights from Porto Alegre to London Heathrow Airport

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Porto Alegre to Heathrow departing on 5/3. 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 London Heathrow Airport

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

Cheapest return fare
£643
Overall average: £760
LATAM Airlines
Mon 16/3Mon 23/3
POA - LHR • 1 stop
Cheapest one-way flight
£424
TAP AIR PORTUGAL
Thu 5/3
POA - LHR • 1 stop
Top airlines
LATAM Airlines
Cheapest • from £643 (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 29% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
February
Cheapest • 22% price drop
February
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 Heathrow!
Flight Deals
Booking Insights
Flight Deals

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

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Porto Alegre to Heathrow 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 Porto Alegre to Heathrow

Mon, 16 Mar - Mon, 23 Mar
LATAM Airlines Logo
20:10 - 14:05
POA
-
LHR
14h 55m
1 stop
LATAM Airlines Logo
20:15 - 09:20
LHR
-
POA
16h 05m
1 stop
£643LATAM Airlines
Thu, 12 Mar - Thu, 16 Apr
TAP AIR PORTUGAL Logo
00:45 - 18:55
POA
-
LHR
15h 10m
1 stop
TAP AIR PORTUGAL Logo
06:00 - 20:25
LHR
-
POA
18h 25m
1 stop
£648TAP AIR PORTUGAL
Thu, 12 Mar - Thu, 16 Apr
TAP AIR PORTUGAL Logo
00:45 - 22:40
POA
-
LHR
18h 55m
1 stop
TAP AIR PORTUGAL Logo
08:00 - 20:25
LHR
-
POA
16h 25m
1 stop
£648TAP AIR PORTUGAL
Thu, 7 May - Mon, 18 May
GOL Logo
18:25 - 16:15
POA
-
LHR
41h 50m
3 stops
GOL Logo
06:15 - 23:40
LHR
-
POA
21h 25m
2 stops
£718GOL
Mon, 16 Mar - Tue, 24 Mar
LATAM Airlines Logo
20:10 - 14:05
POA
-
LHR
14h 55m
1 stop
LATAM Airlines Logo
06:00 - 23:25
LHR
-
POA
20h 25m
2 stops
£719LATAM Airlines
Sun, 15 Mar - Sun, 22 Mar
LATAM Airlines Logo
13:40 - 14:05
POA
-
LHR
21h 25m
2 stops
LATAM Airlines Logo
20:15 - 17:05
LHR
-
POA
23h 50m
1 stop
£728LATAM Airlines
Wed, 4 Mar - Thu, 12 Mar
LATAM Airlines Logo
20:10 - 14:05
POA
-
LHR
14h 55m
1 stop
LATAM Airlines Logo
20:15 - 16:50
LHR
-
POA
23h 35m
2 stops
£729LATAM Airlines
Wed, 4 Mar - Fri, 13 Mar
LATAM Airlines Logo
20:10 - 14:05
POA
-
LHR
14h 55m
1 stop
LATAM Airlines Logo
20:15 - 13:15
LHR
-
POA
20h 00m
2 stops
£729LATAM Airlines
Tue, 10 Mar - Wed, 18 Mar
LATAM Airlines Logo
20:10 - 14:05
POA
-
LHR
14h 55m
1 stop
LATAM Airlines Logo
20:15 - 16:45
LHR
-
POA
23h 30m
2 stops
£733LATAM Airlines
Wed, 1 Apr - Wed, 8 Apr
Multiple Airlines Logo
13:20 - 15:40
POA
-
LHR
22h 20m
2 stops
Multiple Airlines Logo
16:30 - 16:25
LHR
-
POA
27h 55m
2 stops
£734Multiple Airlines
Booking Insights

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

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

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Porto Alegre to London Heathrow Airport, 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 Porto Alegre to London Heathrow Airport is February, where tickets cost £657 (return) on average. On the other hand, the most expensive months are January and December, where the average cost of round-trip tickets is £1,137 and £1,002 respectively.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Porto Alegre to London Heathrow Airport, 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 Porto Alegre to London Heathrow Airport, you should book around 2 weeks before departure, which saves you about 29% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 16 weeks before departure.

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

Low seasonNovember
Cheapest flight£424
Best time to beat the crowds (20% less expensive on average)
Most popular time to fly and prices are also 23% lower on average.
Flight from Porto Alegre to London Heathrow Airport

When to book flights from Porto Alegre to Heathrow

Are your dates flexible? Find out the best times to travel from Porto Alegre to Heathrow 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 Porto Alegre to London Heathrow Airport flights

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

    In the last 3 days, the lowest price for a flight from Porto Alegre to London Heathrow Airport was £424 for a one-way ticket and £643 for a return.

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

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

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

    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 Porto Alegre to London Heathrow Airport.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to London Heathrow Airport from Porto Alegre 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 Porto Alegre to London Heathrow Airport?

    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 London Heathrow Airport with an airline and back to Porto Alegre with another airline.

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

    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 London Heathrow Airport from Porto Alegre up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Porto Alegre to Heathrow

 
See real verified KAYAK customer reviews for airlines flying from Porto Alegre to London. 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 Porto Alegre to Heathrow? 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 1917 reviews
8.0Crew
7.3Comfort
6.7Food
7.5Boarding
7.0Entertainment
Airline reviews

On board crew was very good. Crew was friendly, snacks were good, especially the chips. Seats seemed a bit cramped. Boarding seemed unorganized, as we were instructed to get to the gate an hour early and then just stood around until boarding.

8.0 ExcellentRandy, Jan 2026
MDE - LIM
Read more LATAM Airlines reviews

On board crew was very good. Crew was friendly, snacks were good, especially the chips. Seats seemed a bit cramped. Boarding seemed unorganized, as we were instructed to get to the gate an hour early and then just stood around until boarding.

Latam wouldn’t tell me how much checked luggage would until I was at the airport and they charged me the highest price possible. Besides that, it was okay.

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.

We traveled with two young children, and it was not possible for our family to be seated together. No one offered help or assistance to organize seating so we could sit with our kids. In the end, we managed to find two seats in Economy so I could at least sit with one of them, even though I had originally paid for Comfort+. In summary, I had to downgrade my seat just to be able to sit with one of my children, which was very disappointing

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

Good flight, boarding ok and crew very nice. Flight was not full so I was able to be very comfortable. Blanket and pillow provided with was good as it was very cold during the flight . Food was very good(small snack sandwich and an excellent piece of orange cake). Overall good flight, no complaints.

I like this airline a lot no problems at all, except being forced to check a carry-on bag ., Overall very good airline

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

Latam may be the worst airline in the world, far worse than even the lowest of low cost airlines in the USA. I wasted hours trying to PAY THEM TO CHECK A BAG! Then they misled me at the terminal, sent me through the wrong security line, the list goes on and on... Just absolutely terrible in every way. Avoid at all costs.

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

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

Information on your arrival and departure airports