Cheap flights from London Heathrow Airport to Porto Alegre from £723
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 23/12. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — POA
7 Dec — 14 Dec1
Return
1 adult
Economy
Return
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from London Heathrow to Porto Alegre Salgado Filho are usually found in March or February, booked 13 days in advance, depart on a Monday or Thursday and return on a Monday
Find flight deals from Heathrow to Porto Alegre
Enter your travel dates to find the best prices.
Cheapest flights from Heathrow to Porto Alegre
Explore the most affordable flight options available from Heathrow to Porto Alegre. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 7 November 2025.
Tue 11/1117:00LHR - POA
2 stops27h 05mAmerican Airlines
Tue 3/317:55POA - LHR
2 stops25h 15mAmerican Airlines
Deal found 5/11£952
Tue 18/1118:30LHR - POA
2 stops21h 45mLufthansa
Thu 12/212:30POA - LHR
2 stops18h 15mLufthansa
Deal found 5/11£964
Wed 31/1206:35LHR - POA
2 stops21h 05mMultiple Airlines
Fri 23/114:50POA - LHR
2 stops23h 15mMultiple Airlines
Deal found 7/11£975
Wed 31/1220:15LHR - POA
2 stops47h 30mLATAM Airlines
Fri 23/114:50POA - LHR
1 stop20h 15mLATAM Airlines
Deal found 7/11£978
Tue 11/1115:35LHR - POA
2 stops28h 30mAmerican Airlines
Thu 12/218:00POA - LHR
2 stops25h 10mAmerican Airlines
Deal found 5/11£1,052
Best flights from Heathrow to Porto Alegre
Discover carefully curated flight deals from Heathrow to Porto Alegre that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 7 November 2025.
Thu 19/316:30LHR - POA
2 stops22h 05mLufthansa
Mon 23/312:30POA - LHR
2 stops21h 20mLufthansa
Deal found 5/11£858
Sat 28/213:45LHR - POA
2 stops24h 50mSWISS
Mon 9/314:55POA - LHR
2 stops19h 05mSWISS
Deal found 6/11£880
Mon 2/322:35LHR - POA
2 stops37h 40mTurkish Airlines
Sun 8/310:20POA - LHR
2 stops31h 45mTurkish Airlines
Deal found 6/11£887
Sun 14/1215:35LHR - POA
2 stops29h 10mAmerican Airlines
Mon 12/118:25POA - LHR
2 stops38h 55mAmerican Airlines
Deal found 7/11£1,450
Wed 17/1220:15LHR - POA
1 stop16h 00mVirgin Atlantic
Tue 13/120:10POA - LHR
1 stop14h 55mVirgin Atlantic
Deal found 5/11£1,523
Fri 27/219:30LHR - POA
3 stops43h 05mSWISS
Mon 9/314:55POA - LHR
3 stops24h 45mSWISS
Deal found 6/11£936
Fri 27/220:05LHR - POA
2 stops42h 30mSWISS
Sun 8/314:55POA - LHR
3 stops27h 30mSWISS
Deal found 6/11£963
Tue 28/419:15LHR - POA
3 stops42h 05mSWISS
Thu 7/515:15POA - LHR
3 stops26h 15mSWISS
Deal found 6/11£1,006
Wed 31/1207:00LHR - POA
3 stops31h 35mSWISS
Fri 23/114:50POA - LHR
3 stops22h 50mSWISS
Deal found 7/11£1,437
Sun 29/319:15LHR - POA
3 stops42h 05mSWISS
Sat 11/415:15POA - LHR
3 stops42h 25mSWISS
Deal found 5/11£1,446
Last-minute flights from Heathrow to Porto Alegre
Discover last-minute flight deals from Heathrow to Porto Alegre. Data last updated 7 November 2025 and is based on user searches.
Tue 11/1115:35LHR - POA
2 stops28h 30mAmerican Airlines
Tue 10/317:55POA - LHR
2 stops25h 15mAmerican Airlines
Deal found 5/11£952
Tue 11/1115:35LHR - POA
2 stops28h 30mAmerican Airlines
Thu 12/218:00POA - LHR
2 stops25h 10mAmerican Airlines
Deal found 5/11£1,052
Tue 18/1118:30LHR - POA
2 stops21h 45mLufthansa
Thu 12/212:30POA - LHR
2 stops18h 15mLufthansa
Deal found 5/11£964
Wed 31/1206:35LHR - POA
2 stops21h 05mMultiple Airlines
Fri 23/114:50POA - LHR
2 stops23h 15mMultiple Airlines
Deal found 7/11£975
Wed 31/1220:15LHR - POA
2 stops47h 30mLATAM Airlines
Fri 23/114:50POA - LHR
1 stop20h 15mLATAM Airlines
Deal found 7/11£978
One-way flights from Heathrow to Porto Alegre
Search for one-way flight options from Heathrow to Porto Alegre. Find affordable one-way fares based on user searches. Data last updated 7 November 2025.
Tue 23/1209:55LHR - POA
3 stops41h 45mMultiple Airlines
Deal found 6/11£723
Mon 22/1220:30LHR - POA
3 stops49h 55mMultiple Airlines
Deal found 6/11£755
Sun 21/1216:35LHR - POA
3 stops34h 20mMultiple Airlines
Deal found 6/11£829
Mon 22/1220:15LHR - POA
1 stop16h 05mVirgin Atlantic
Deal found 6/11£939
Sun 21/1220:15LHR - POA
2 stops31h 50mLATAM Airlines
Deal found 6/11£948
Tue 23/1220:15LHR - POA
1 stop20h 50mLATAM Airlines
Deal found 6/11£968
Sun 21/1220:15LHR - POA
1 stop16h 00mVirgin Atlantic
Deal found 6/11£1,078
Cheap flight deals from Heathrow to Porto Alegre
Discover tips and strategies to find the most affordable flight options for your journey from Heathrow (LHR) to Porto Alegre (POA). 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 7 November 2025.
Customise your flight search to find flights from Heathrow to Porto Alegre 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 7 November 2025.
Use the filters below to find and compare flights from London Heathrow Airport to Porto Alegre that are best for you.
Fly from
Heathrow
Fly to
Porto Alegre
Route
Depart
Return
Price
LondonPorto Alegre
LHR - POA
LHRPOA
London Heathrow
Thu 19/3
16:30-11:35
2 stops22h 05m
Porto Alegre Salgado Filho
Mon 23/3
12:30-12:50
2 stops21h 20m
£858
LondonPorto Alegre
LHR - POA
LHRPOA
London Heathrow
Sat 28/2
13:45-11:35
2 stops24h 50m
Porto Alegre Salgado Filho
Mon 9/3
14:55-13:00
2 stops19h 05m
£880
LondonPorto Alegre
LHR - POA
LHRPOA
London Heathrow
Mon 2/3
22:35-09:15
2 stops37h 40m
Porto Alegre Salgado Filho
Sun 8/3
10:20-21:05
2 stops31h 45m
£887
LondonPorto Alegre
LHR - POA
LHRPOA
London Heathrow
Fri 27/2
19:30-11:35
3 stops43h 05m
Porto Alegre Salgado Filho
Mon 9/3
14:55-18:40
3 stops24h 45m
£936
LondonPorto Alegre
LHR - POA
LHRPOA
London Heathrow
Fri 27/2
20:05-11:35
2 stops42h 30m
Porto Alegre Salgado Filho
Sun 8/3
14:55-21:25
3 stops27h 30m
£963
LondonPorto Alegre
LHR - POA
LHRPOA
London Heathrow
Tue 28/4
19:15-09:20
3 stops42h 05m
Porto Alegre Salgado Filho
Thu 7/5
15:15-21:30
3 stops26h 15m
£1,006
LondonPorto Alegre
LHR - POA
LHRPOA
London Heathrow
Wed 31/12
07:00-11:35
3 stops31h 35m
Porto Alegre Salgado Filho
Fri 23/1
14:50-16:40
3 stops22h 50m
£1,437
LondonPorto Alegre
LHR - POA
LHRPOA
London Heathrow
Sun 29/3
19:15-09:20
3 stops42h 05m
Porto Alegre Salgado Filho
Sat 11/4
15:15-13:40
3 stops42h 25m
£1,446
LondonPorto Alegre
LHR - POA
LHRPOA
London Heathrow
Sun 14/12
15:35-17:45
2 stops29h 10m
Porto Alegre Salgado Filho
Mon 12/1
18:25-12:20
2 stops38h 55m
£1,450
LondonPorto Alegre
LHR - POA
LHRPOA
London Heathrow
Wed 17/12
20:15-09:15
1 stop16h 00m
Porto Alegre Salgado Filho
Tue 13/1
20:10-14:05
1 stop14h 55m
£1,523
Flights are sorted by cheapest return flights first.
Deals found on 6/11
Showing 1-10 of 16 results
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Best time to book a flight from Heathrow to Porto Alegre
Have a flexible travel schedule? Discover the best time to fly to Porto Alegre from Heathrow 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 London Heathrow Airport to Porto Alegre
Prices
More
How far ahead should I book a flight from London Heathrow Airport to Porto Alegre?
Use this chart to determine the optimal time to book a return flight from Heathrow to Porto Alegre. Price data was last updated on 31 October 2025.
The price you pay for your flight from London Heathrow Airport to Porto Alegre may vary depending on when you book. For the best chance of a lower fare, look to book 13 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
What is the cheapest month to book a flight from London Heathrow Airport to Porto Alegre?
Currently, April is the cheapest month in which you can book a flight from London Heathrow Airport to Porto Alegre (average of £606). Flying from London Heathrow Airport to Porto Alegre in August is currently the most expensive (average of £941). 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 LHR to POA?
Find hourly flight availability from Heathrow to Porto Alegre. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 7 November 2025.
Unlike in the afternoon, when flights are generally more expensive, you can save up to 42% on flights from London Heathrow Airport to Porto Alegre by exploring options for tickets at midday.
What’s the top stopover airport for flights from London Heathrow Airport to Porto Alegre?
Share of one-stop return flights from London Heathrow Airport to Porto Alegre chosen by Cheapflights users in the past 12 months, using the same stopover each way.
Sao Paulo (GRU) – chosen by Cheapflights users on 75% of one-stop itineraries from London Heathrow Airport to Porto Alegre on Cheapflights.
What’s the fastest stopover option from London Heathrow Airport to Porto Alegre?
Shortest average travel time for one-stop one-way flights from London Heathrow Airport to Porto Alegre, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by stopover airport.
Flights via Sao Paulo (GRU) have the shortest average one-way travel time for one-stop routes: 16h 18m.
What’s the fastest stopover option from London Heathrow Airport to Porto Alegre?
Shortest average travel time for one-stop one-way flights from London Heathrow Airport to Porto Alegre, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by stopover airport.
Flights via Sao Paulo (GRU) have the shortest average one-way travel time for one-stop routes: 16h 18m.
Which airport typically offers the quickest stopover for flights from London Heathrow Airport to Porto Alegre?
Average stopover duration for one-stop one-way flights from London Heathrow Airport to Porto Alegre, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.
Flights via Sao Paulo (GRU) offer the fastest connection on this route, with an average stopover time of 2h 50m.
Reviews of airlines servicing Porto Alegre
Get insights into the airlines that provide service to Porto Alegre. 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 Porto Alegre. Reviews last updated 7 November 2025.
Check out reviews from past customers who have flown with LATAM Airlines, Virgin Atlantic, andAir France from London Heathrow Airport to Porto Alegre 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.
Smiles because se upgraded to premiums economy. That was similar to LAN economy years ahí!
Related info for your journey
Find useful and relevant information for your journey from Heathrow to Porto Alegre. 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 into for flights to Porto Alegre from London Heathrow?
Porto Alegre Salgado Filho (POA) is the airport you will fly into if you book a flight from London Heathrow to Porto Alegre. You should not have trouble finding flights to Salgado Filho from London Heathrow; the airport handles an average of 0 inbound flights from London Heathrow per day. You should also have plenty of airline options to choose from since 4 airlines have flights to the Porto Alegre airport from London Heathrow. It is only a 4.0 mi journey from Salgado Filho (POA) to Porto Alegre’s city center.
How long is the flight from London Heathrow Airport to Porto Alegre?
For as low as £858, Lufthansa can have you in Porto Alegre from London Heathrow Airport in 22h 05m. The distance between London Heathrow Airport and Porto Alegre is about 6410 mi. Both multi-stop and direct flights can be found to your destination and back.
What are the cheapest airlines flying from London Heathrow Airport to Porto Alegre round-trip?
Our cheapest airline available from London Heathrow Airport to Porto Alegre is TAP AIR PORTUGAL. Our recent data shows that you can find tickets from as low as £649 on this airline. Additional options worth looking into are Air France and LATAM Airlines, starting at £661 and £723 round-trip. You may be able to fly from London Heathrow Airport to Porto Alegre for 35% less than the average price by searching for these airlines.
Can I find deals for business class flights from Heathrow to Porto Alegre?
Yes. Cheapflights offers flight deals from Heathrow to Porto Alegre 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 London Heathrow Airport to Porto Alegre?
Currently, April is the cheapest month in which you can book a flight from London Heathrow Airport to Porto Alegre (average of £606). Flying from London Heathrow Airport to Porto Alegre in August is currently the most expensive (average of £941). 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.
Browse through other flights departing from Heathrow. Flights are based on user searches made on Cheapflights and were last updated on 7 November 2025.
Explore flights to Porto Alegre departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 7 November 2025.
Top 4 airlines flying from Heathrow to Porto Alegre
Discover the top 4 airlines that operate flights from Heathrow to Porto Alegre. 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 7 November 2025.
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 Heathrow to Porto Alegre?
900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Porto Alegre from Heathrow today with Cheapflights!
Why should you use Cheapflights to find cheap flight tickets from Heathrow to Porto Alegre?
It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Heathrow to Porto Alegre.
Can Cheapflights find flights from Heathrow to Porto Alegre with no change fees?
Certainly. Search results for flights to Porto Alegre from Heathrow 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 Heathrow to Porto Alegre become cheaper?
Of course! You can now track prices for flights from Heathrow to Porto Alegre and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.
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