Cheap flights from London Heathrow Airport to Porto Alegre from £456
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 15/2. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — POA
4 Jan — 11 Jan1
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 April or January, booked 13 days in advance, depart on a Monday or Thursday and return on a Monday
Cheap 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 5 December 2025.
Mon 15/1220:15LHR - POA
2 stops23h 35mLATAM Airlines
Mon 12/120:15POA - LHR
1 stop14h 50mLATAM Airlines
Deal found 3/12£1,006
Wed 31/1217:30LHR - POA
2 stops22h 40mMultiple Airlines
Wed 7/108:25POA - LHR
3 stops28h 25mMultiple Airlines
Deal found 3/12£1,333
Wed 24/1218:30LHR - POA
2 stops32h 25mMultiple Airlines
Sat 10/120:10POA - LHR
2 stops44h 40mMultiple Airlines
Deal found 3/12£1,350
Wed 24/1220:15LHR - POA
1 stop23h 50mLATAM Airlines
Sat 10/120:10POA - LHR
2 stops44h 40mLATAM Airlines
Deal found 3/12£1,402
Sun 14/1218:30LHR - POA
2 stops40h 10mTAP AIR PORTUGAL
Thu 15/121:00POA - LHR
2 stops22h 40mTAP AIR PORTUGAL
Deal found 3/12£1,410
Sun 14/1216:30LHR - POA
2 stops42h 10mTAP AIR PORTUGAL
Tue 13/111:00POA - LHR
2 stops31h 35mTAP AIR PORTUGAL
Deal found 3/12£1,412
Tue 23/1218:40LHR - POA
3 stops28h 30mMultiple Airlines
Sat 10/108:25POA - LHR
3 stops29h 40mMultiple Airlines
Deal found 3/12£1,425
Wed 31/1214:55LHR - POA
2 stops31h 30mLATAM Airlines
Wed 7/106:40POA - LHR
2 stops34h 10mLATAM Airlines
Deal found 3/12£1,431
Sat 13/1215:35LHR - POA
2 stops46h 25mAmerican Airlines
Wed 14/117:55POA - LHR
2 stops35h 40mAmerican Airlines
Deal found 3/12£1,440
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 5 December 2025.
Tue 3/320:05LHR - POA
2 stops42h 30mSWISS
Tue 24/314:50POA - LHR
3 stops22h 50mSWISS
Deal found 3/12£821
Wed 4/318:30LHR - POA
1 stop26h 25mTAP AIR PORTUGAL
Thu 9/411:00POA - LHR
2 stops20h 00mTAP AIR PORTUGAL
Deal found 4/12£838
Mon 6/419:50LHR - POA
1 stop29h 55mTAP AIR PORTUGAL
Tue 21/400:15POA - LHR
1 stop30h 05mTAP AIR PORTUGAL
Deal found 4/12£890
Tue 3/320:05LHR - POA
2 stops42h 30mSWISS
Wed 10/614:25POA - LHR
3 stops27h 05mSWISS
Deal found 4/12£919
Thu 23/408:00LHR - POA
1 stop16h 25mTAP AIR PORTUGAL
Thu 7/521:55POA - LHR
1 stop15h 50mTAP AIR PORTUGAL
Deal found 4/12£897
Tue 31/308:00LHR - POA
1 stop17h 45mTAP AIR PORTUGAL
Tue 14/411:00POA - LHR
2 stops21h 45mTAP AIR PORTUGAL
Deal found 4/12£932
Thu 2/408:00LHR - POA
1 stop16h 25mTAP AIR PORTUGAL
Tue 14/411:00POA - LHR
2 stops21h 45mTAP AIR PORTUGAL
Deal found 4/12£944
Mon 6/419:50LHR - POA
1 stop29h 55mTAP AIR PORTUGAL
Mon 20/411:00POA - LHR
2 stops21h 45mTAP AIR PORTUGAL
Deal found 4/12£974
Fri 10/419:50LHR - POA
1 stop30h 50mTAP AIR PORTUGAL
Fri 24/411:00POA - LHR
2 stops26h 45mTAP AIR PORTUGAL
Deal found 4/12£974
Thu 9/408:00LHR - POA
1 stop16h 25mTAP AIR PORTUGAL
Thu 23/411:00POA - LHR
2 stops20h 00mTAP AIR PORTUGAL
Deal found 4/12£974
Last-minute flights from Heathrow to Porto Alegre
Discover last-minute flight deals from Heathrow to Porto Alegre. Data last updated 5 December 2025 and is based on user searches.
Mon 15/1220:15LHR - POA
2 stops23h 35mLATAM Airlines
Mon 12/113:40POA - LHR
2 stops21h 25mLATAM Airlines
Deal found 3/12£1,006
Wed 24/1218:30LHR - POA
2 stops32h 25mMultiple Airlines
Sat 10/120:10POA - LHR
2 stops44h 40mMultiple Airlines
Deal found 3/12£1,350
Wed 31/1217:30LHR - POA
2 stops22h 40mMultiple Airlines
Wed 7/108:25POA - LHR
3 stops28h 25mMultiple Airlines
Deal found 3/12£1,333
Thu 15/120:15LHR - POA
2 stops29h 35mLATAM Airlines
Mon 16/305:00POA - LHR
2 stops30h 05mLATAM Airlines
Deal found 3/12£848
Thu 15/107:15LHR - POA
2 stops20h 25mMultiple Airlines
Mon 16/320:10POA - LHR
2 stops18h 05mMultiple Airlines
Deal found 3/12£864
Thu 15/106:30LHR - POA
2 stops19h 45mMultiple Airlines
Sat 28/315:45POA - LHR
2 stops46h 50mMultiple Airlines
Deal found 3/12£1,087
Thu 15/106:00LHR - POA
1 stop16h 20mTAP AIR PORTUGAL
Sat 28/316:55POA - LHR
2 stops26h 00mTAP AIR PORTUGAL
Deal found 3/12£1,111
Thu 15/114:25LHR - POA
3 stops24h 10mSWISS
Mon 16/314:50POA - LHR
2 stops19h 10mSWISS
Deal found 3/12£1,257
Wed 21/120:50LHR - POA
3 stops30h 50mMultiple Airlines
Sun 22/305:30POA - LHR
2 stops30h 05mMultiple Airlines
Deal found 3/12£825
Wed 21/120:15LHR - POA
1 stop20h 50mLATAM Airlines
Sun 22/320:10POA - LHR
1 stop14h 55mLATAM Airlines
Deal found 3/12£891
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 5 December 2025.
Sun 15/219:55LHR - POA
2 stops40h 50mMultiple Airlines
Deal found 5/12£456
Sun 15/220:15LHR - POA
1 stop16h 00mLATAM Airlines
Deal found 5/12£672
Find 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 5 December 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 5 December 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
Tue 3/3
20:05-11:35
2 stops42h 30m
Porto Alegre Salgado Filho
Tue 24/3
14:50-16:40
3 stops22h 50m
£821
LondonPorto Alegre
LHR - POA
LHRPOA
London Heathrow
Wed 4/3
18:30-17:55
1 stop26h 25m
Porto Alegre Salgado Filho
Thu 9/4
11:00-11:00
2 stops20h 00m
£838
LondonPorto Alegre
LHR - POA
LHRPOA
London Heathrow
Mon 6/4
19:50-21:45
1 stop29h 55m
Porto Alegre Salgado Filho
Tue 21/4
00:15-10:20
1 stop30h 05m
£890
LondonPorto Alegre
LHR - POA
LHRPOA
London Heathrow
Thu 23/4
08:00-20:25
1 stop16h 25m
Porto Alegre Salgado Filho
Thu 7/5
21:55-17:45
1 stop15h 50m
£897
LondonPorto Alegre
LHR - POA
LHRPOA
London Heathrow
Tue 3/3
20:05-11:35
2 stops42h 30m
Porto Alegre Salgado Filho
Wed 10/6
14:25-21:30
3 stops27h 05m
£919
LondonPorto Alegre
LHR - POA
LHRPOA
London Heathrow
Tue 31/3
08:00-21:45
1 stop17h 45m
Porto Alegre Salgado Filho
Tue 14/4
11:00-12:45
2 stops21h 45m
£932
LondonPorto Alegre
LHR - POA
LHRPOA
London Heathrow
Thu 2/4
08:00-20:25
1 stop16h 25m
Porto Alegre Salgado Filho
Tue 14/4
11:00-12:45
2 stops21h 45m
£944
LondonPorto Alegre
LHR - POA
LHRPOA
London Heathrow
Mon 6/4
19:50-21:45
1 stop29h 55m
Porto Alegre Salgado Filho
Mon 20/4
11:00-12:45
2 stops21h 45m
£974
LondonPorto Alegre
LHR - POA
LHRPOA
London Heathrow
Fri 10/4
19:50-22:40
1 stop30h 50m
Porto Alegre Salgado Filho
Fri 24/4
11:00-17:45
2 stops26h 45m
£974
LondonPorto Alegre
LHR - POA
LHRPOA
London Heathrow
Thu 9/4
08:00-20:25
1 stop16h 25m
Porto Alegre Salgado Filho
Thu 23/4
11:00-11:00
2 stops20h 00m
£974
Flights are sorted by cheapest return flights first.
Deals found on 5/12
Showing 1-10 of 12 results
1
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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 28 November 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 £611). Flying from London Heathrow Airport to Porto Alegre in August is currently the most expensive (average of £923). 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 5 December 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 73% of one-stop itineraries from London Heathrow Airport to Porto Alegre on Cheapflights.
What’s the cheapest stopover airport for flights from London Heathrow Airport to Porto Alegre?
Average return fare for one-stop flights from London Heathrow Airport to Porto Alegre, chosen by Cheapflights users in the past 12 months, with the same stopover each way.
Sao Paulo (GRU) is the most affordable one-stop option, with an average return flight price of £1,003.
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 19m.
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 53m.
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 5 December 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 £838, SWISS can have you in Porto Alegre from London Heathrow Airport in 26h 25m. 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 £636 on this airline. Additional options worth looking into are Air France and LATAM Airlines, starting at £649 and £709 round-trip. You may be able to fly from London Heathrow Airport to Porto Alegre for 32% 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 £611). Flying from London Heathrow Airport to Porto Alegre in August is currently the most expensive (average of £923). 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 5 December 2025.
Explore flights to Porto Alegre departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 5 December 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 5 December 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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