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Cheap flights from Porto Alegre to London Heathrow Airport from £366

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 25/11. Fares are subject to change and may not be available on all flights or dates of travel.
POA — LHR
14 Dec — 21 Dec1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Porto Alegre to Heathrow

Discover tips and strategies to find the most affordable flight options for your journey from Porto Alegre (POA) to Heathrow (LHR). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 14 November 2025.

Round-trip from

£648

One-way from

£366

Popular in

January

Cheapest in

February

Average price

£706
LATAM Airlines
  • LATAM Airlines
  • 12/3-19/3
  • 3 total stops
  • 41h 50m total
  • Porto Alegre to London
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LATAM Airlines
  • LATAM Airlines
  • 25/11
  • 1 total stop
  • 20h 15m total
  • Porto Alegre to London
Search Deals
Highest demand for flights based on searches. 3% potential increase in price (£20 potential increase over avg. return price).
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Cheapest flight prices on average. 1% potential price decrease (£11 potential savings vs. average return price).
Search Deals
Average for round-trip flights in November 2025
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Find flight deals from Porto Alegre to Heathrow

Enter your travel dates to find the best prices.

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 14 November 2025.

Tue 25/1114:05POA - LHR
2 stops23h 30mLATAM Airlines
Tue 2/1218:45LHR - POA
2 stops25h 20mLATAM Airlines
Deal found 13/11£744
Mon 24/1120:10POA - LHR
1 stop14h 55mLATAM Airlines
Tue 2/1219:05LHR - POA
2 stops25h 00mLATAM Airlines
Deal found 13/11£817
Tue 25/1114:05POA - LHR
2 stops23h 30mLATAM Airlines
Mon 1/1217:25LHR - POA
2 stops23h 40mLATAM Airlines
Deal found 13/11£835
Wed 19/1114:05POA - LHR
2 stops21h 00mLATAM Airlines
Tue 2/1218:45LHR - POA
2 stops25h 20mLATAM Airlines
Deal found 13/11£862
Thu 13/1119:30POA - LHR
2 stops39h 55mGOL
Thu 20/1106:20LHR - POA
2 stops37h 15mGOL
Deal found 12/11£869
Tue 25/1114:05POA - LHR
2 stops23h 30mLATAM Airlines
Wed 3/1217:25LHR - POA
2 stops26h 40mLATAM Airlines
Deal found 13/11£888
Fri 21/1117:55POA - LHR
2 stops18h 55mMultiple Airlines
Mon 1/1218:40LHR - POA
2 stops19h 55mMultiple Airlines
Deal found 13/11£889
Fri 21/1117:55POA - LHR
2 stops18h 55mLufthansa
Sat 29/1118:30LHR - POA
2 stops21h 45mLufthansa
Deal found 13/11£895
Wed 3/1217:45POA - LHR
2 stops17h 05mGOL
Tue 9/1206:30LHR - POA
2 stops21h 15mGOL
Deal found 13/11£913
Tue 25/1114:05POA - LHR
2 stops23h 30mLATAM Airlines
Sun 30/1120:15LHR - POA
1 stop23h 50mLATAM Airlines
Deal found 13/11£924
Thu 13/1120:10POA - LHR
1 stop14h 55mLATAM Airlines
Thu 20/1120:15LHR - POA
2 stops20h 00mLATAM Airlines
Deal found 12/11£950

Cheapflights Fare Finder

 
Customise your flight search to find flights from Porto Alegre to Heathrow that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 14 November 2025.
Use the filters below to find and compare flights from Porto Alegre to London Heathrow Airport that are best for you.

Fly from

Porto Alegre

Fly to

Heathrow

Route

Depart

Return

Price

Porto AlegreLondon

POA - LHR

POALHR

Porto Alegre Salgado Filho

Thu 12/3

14:05-16:35

2 stops23h 30m

London Heathrow

Thu 19/3

20:15-11:35

1 stop18h 20m

£648

Porto AlegreLondon

POA - LHR

POALHR

Porto Alegre Salgado Filho

Wed 11/3

13:40-16:05

2 stops23h 25m

London Heathrow

Thu 19/3

06:30-23:30

2 stops20h 00m

£749

Porto AlegreLondon

POA - LHR

POALHR

Porto Alegre Salgado Filho

Fri 13/3

13:40-14:25

2 stops21h 45m

London Heathrow

Fri 20/3

06:20-23:30

2 stops20h 10m

£749

Porto AlegreLondon

POA - LHR

POALHR

Porto Alegre Salgado Filho

Wed 11/3

13:40-16:05

2 stops23h 25m

London Heathrow

Fri 20/3

06:30-00:45

2 stops21h 15m

£749

Porto AlegreLondon

POA - LHR

POALHR

Porto Alegre Salgado Filho

Fri 13/3

14:55-14:05

1 stop20h 10m

London Heathrow

Sun 19/4

21:20-17:00

1 stop23h 40m

£749

Porto AlegreLondon

POA - LHR

POALHR

Porto Alegre Salgado Filho

Mon 11/5

15:25-06:30

2 stops35h 05m

London Heathrow

Wed 27/5

14:05-14:35

2 stops28h 30m

£774

Porto AlegreLondon

POA - LHR

POALHR

Porto Alegre Salgado Filho

Tue 5/5

10:05-12:40

2 stops22h 35m

London Heathrow

Mon 25/5

18:30-09:25

2 stops18h 55m

£790

Porto AlegreLondon

POA - LHR

POALHR

Porto Alegre Salgado Filho

Fri 13/3

13:40-14:25

2 stops21h 45m

London Heathrow

Thu 16/4

08:40-10:35

2 stops29h 55m

£814

Porto AlegreLondon

POA - LHR

POALHR

Porto Alegre Salgado Filho

Sat 21/3

07:45-10:35

2 stops23h 50m

London Heathrow

Sat 28/3

20:15-12:55

2 stops19h 40m

£815

Porto AlegreLondon

POA - LHR

POALHR

Porto Alegre Salgado Filho

Tue 10/3

13:40-16:05

2 stops23h 25m

London Heathrow

Thu 26/3

06:30-23:30

2 stops20h 00m

£840

Flights are sorted by cheapest return flights first.

Deals found on 12/11

Showing 1-10 of 19 results
1
2

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.
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

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

Use this chart to determine the optimal time to book a return flight from Porto Alegre to Heathrow. Price data was last updated on 7 November 2025.

The best time to book flights from Porto Alegre to London Heathrow Airport is 58 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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

Currently, January is the cheapest month in which you can book a flight from Porto Alegre to London Heathrow Airport (average of £245). Flying from Porto Alegre to London Heathrow Airport in September is currently the most expensive (average of £863). 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.

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

Find hourly flight availability from Porto Alegre to Heathrow. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 14 November 2025.

Unlike in the afternoon, when flights are generally more expensive, you can save up to 23% on flights from Porto Alegre to London Heathrow Airport by exploring options for tickets in the morning.

How much does it cost for a return flight from Porto Alegre to London Heathrow Airport?

Reviews of airlines servicing Heathrow

Get insights into the airlines that provide service to Heathrow. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Heathrow. Reviews last updated 14 November 2025.
Check out reviews from past customers who have flown with LATAM Airlines 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
7.5
Good
1,876 reviews
Check prices

Comfort

7.3

Entertainment

7.0

Boarding

7.6

Overall

7.5

Food

6.7

Crew

8.0

Reviews

1 / 20
8.0
Excellent

Juan Carlos,Sept 2025

MVD - SCL

My experience was good but on my way back from LA to Vegas when I was boarding I was pulled to the side and I was asked to show my passport, I ‘am an American Citizen since 2001. I was the only one who was asked, there was no reason for that. Other that it was a good experience.
LATAM Airlines
7.5
Good
1,876 reviews
LATAM Airlines
7.5
Good
1,876 reviews
Check prices

Comfort

7.3

Entertainment

7.0

Boarding

7.6

Overall

7.5

Food

6.7

Crew

8.0

Reviews

1 / 20
8.0
Excellent

Juan Carlos,Sept 2025

MVD - SCL

My experience was good but on my way back from LA to Vegas when I was boarding I was pulled to the side and I was asked to show my passport, I ‘am an American Citizen since 2001. I was the only one who was asked, there was no reason for that. Other that it was a good experience.

Related info for your journey

Find useful and relevant information for your journey from Porto Alegre to Heathrow. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • 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 1 airline.

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

    LATAM Airlines and KLM can get you from Porto Alegre to London Heathrow Airport in just under 23h 25m. Your travel time can differ by up to 05m. 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 is the cheapest airline to fly from Porto Alegre to London Heathrow Airport round-trip?

    Cheapflights users have booked flights from Porto Alegre to London Heathrow Airport round-trip from £778. LATAM Airlines is 8% 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, January is the cheapest month in which you can book a flight from Porto Alegre to London Heathrow Airport (average of £245). Flying from Porto Alegre to London Heathrow Airport in September is currently the most expensive (average of £863). 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.

See more FAQs

Travelling to a place near London Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Milton Keynes
Croydon
Slough
Gatwick
Hounslow
Northampton
Luton
Ilford
Wembley
Deal
Hayes
Colchester
Watford
Winchester
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Brentford
Romford
Chichester
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Alternative routes for Porto Alegre to Heathrow

See prices for flight routes from nearby airports that may be better suited for you.
Porto Alegre to Gatwick flights

Top airline flying from Porto Alegre to Heathrow

Discover the top airline that operate flights from Porto Alegre to Heathrow. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 14 November 2025.
AirlineCheapestAverageFlexibilityOn-time
LATAM AirlinesCheapest£778Average£839FlexibilityNo cancel feeOn-time81%
Search LATAM Airlines flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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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