POA - LHR

£300 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 1/12. 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
£634
Typical prices: £665-£833
LATAM Airlines
Mon 16/3Mon 23/3
POA - LHR • 1 stop
Cheapest one-way flight
£309
LATAM Airlines
Mon 1/12
POA - LHR • 1 stop
Top airlines
LATAM Airlines
Cheapest • from £634 (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 33% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
February
Cheapest • 24% price drop
February
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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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 - 14:05POA-LHR
14h 55m1 stop
LATAM Airlines Logo
20:15 - 11:35LHR-POA
18h 20m1 stop
£634LATAM Airlines
Find Deal
Mon, 16 Mar - Sun, 22 Mar
LATAM Airlines Logo
14:55 - 14:05POA-LHR
20h 10m2 stops
LATAM Airlines Logo
20:15 - 16:50LHR-POA
23h 35m2 stops
£650LATAM Airlines
Find Deal
Mon, 16 Mar - Mon, 23 Mar
LATAM Airlines Logo
20:10 - 14:05POA-LHR
14h 55m1 stop
LATAM Airlines Logo
20:15 - 11:35LHR-POA
18h 20m1 stop
£651LATAM Airlines
Find Deal
Mon, 16 Mar - Sat, 21 Mar
LATAM Airlines Logo
13:40 - 14:05POA-LHR
21h 25m2 stops
LATAM Airlines Logo
20:15 - 14:00LHR-POA
20h 45m2 stops
£654LATAM Airlines
Find Deal
Mon, 16 Feb - Sat, 28 Feb
Multiple Airlines Logo
04:45 - 14:05POA-LHR
30h 20m1 stop
Multiple Airlines Logo
19:55 - 23:25LHR-POA
30h 30m2 stops
£697Multiple Airlines
Find Deal
Sun, 15 Mar - Mon, 23 Mar
LATAM Airlines Logo
17:55 - 14:05POA-LHR
17h 10m1 stop
LATAM Airlines Logo
20:15 - 11:35LHR-POA
18h 20m1 stop
£699LATAM Airlines
Find Deal
Sun, 15 Mar - Mon, 23 Mar
LATAM Airlines Logo
09:40 - 09:15POA-LHR
20h 35m2 stops
LATAM Airlines Logo
20:15 - 11:35LHR-POA
18h 20m1 stop
£720LATAM Airlines
Find Deal
Thu, 27 Nov - Wed, 31 Dec
LATAM Airlines Logo
20:10 - 14:05POA-LHR
14h 55m1 stop
LATAM Airlines Logo
18:45 - 13:15LHR-POA
21h 30m2 stops
£725LATAM Airlines
Find Deal
Fri, 13 Mar - Thu, 16 Apr
LATAM Airlines Logo
10:05 - 09:15POA-LHR
20h 10m2 stops
LATAM Airlines Logo
21:20 - 11:30LHR-POA
18h 10m1 stop
£732LATAM Airlines
Find Deal
Fri, 13 Mar - Thu, 16 Apr
LATAM Airlines Logo
17:55 - 14:05POA-LHR
17h 10m1 stop
LATAM Airlines Logo
21:20 - 09:20LHR-POA
16h 00m1 stop
£734LATAM Airlines
Find Deal
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.

How much is a return flight from Porto Alegre to London Heathrow Airport?

This analysis is based on the cheapest return trip price found on KAYAK in the last 12 months by searching for a flight from Porto Alegre to London Heathrow Airport departing in March.

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 £643 (return) on average. On the other hand, the most expensive months are January and December, where the average cost of round-trip tickets is £993 and £980 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 33% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 16 weeks before departure.

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

Low seasonNovember
Cheapest flight£309
Best time to beat the crowds (17% less expensive on average)
Most popular time to fly and prices are also 24% 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 £300 for a one-way ticket and £634 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 1877 reviews
7.6Boarding
7.3Comfort
7.0Entertainment
6.7Food
8.0Crew
Airline reviews

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

8.0 ExcellentAnonymous, Nov 2025LIM - JFK
Read more LATAM Airlines reviews

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.

Check in -- in business took over 30 mins as there was only one attendant. Boarding was also a mess. The seat was too narrow and was not working properly. Food was very bad and the entertainment very poor. Crew was very polite and helpful, in fairness.

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

Really bad experience – delayed for 6 hours without any notice, no food or drinks provided, and stuck in the horrible Cartagena airport.

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.

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

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

Information on your arrival and departure airports

Porto Alegre (POA)
Heathrow (LHR)