Cheap flights from London Heathrow Airport to Porto Alegre from £430
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London Heathrow Airport to Porto Alegre departing on 23/11. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
Discover deals from 900+ travel sites with momondo.
Find the cheapest flights from London Heathrow Airport to Porto Alegre
Cheap return flights
Cheap one-way flights
Cheap last-minute flights
Save money when you book flights with momondo
Big names, great deals
Big names, great deals
Search 100s of travel sites to compare prices.Filter for what you want
Filter for what you want
Free Wi-Fi? Stopover? Instantly customise your results.Trusted and free
Trusted and free
We’re completely free to use - no hidden charges or fees.Price Alerts
Price Alerts
Not ready to book? to track prices.TAP AIR PORTUGAL flights from London Heathrow Airport to Porto Alegre
Our best TAP AIR PORTUGAL deals on London Heathrow Airport to Porto Alegre flight tickets
LATAM Airlines flights from London Heathrow Airport to Porto Alegre
Our best LATAM Airlines deals on London Heathrow Airport to Porto Alegre flight tickets
momondo Fare Finder
Use the filters below to find and compare flights from London Heathrow Airport to Porto Alegre that are best for you.
Fly from
Fly to
Route
Depart
Return
LondonPorto Alegre
LHR London Heathrow - POA Porto Alegre Salgado Filho
LHRPOA
London Heathrow
Fri 6/11
20:45-19:40
2 stops25h 55m
Porto Alegre Salgado Filho
Tue 17/11
21:15-17:30
1 stop17h 15m
LondonPorto Alegre
LHR London Heathrow - POA Porto Alegre Salgado Filho
LHRPOA
London Heathrow
Tue 3/11
06:00-19:40
1 stop16h 40m
Porto Alegre Salgado Filho
Tue 1/12
21:15-21:35
1 stop21h 20m
LondonPorto Alegre
LHR London Heathrow - POA Porto Alegre Salgado Filho
LHRPOA
London Heathrow
Sun 22/11
06:50-00:20
2 stops20h 30m
Porto Alegre Salgado Filho
Sun 29/11
05:20-17:15
2 stops32h 55m
LondonPorto Alegre
LHR London Heathrow - POA Porto Alegre Salgado Filho
LHRPOA
London Heathrow
Sun 22/11
06:50-08:00
2 stops28h 10m
Porto Alegre Salgado Filho
Sun 29/11
05:20-17:15
2 stops32h 55m
LondonPorto Alegre
LHR London Heathrow - POA Porto Alegre Salgado Filho
LHRPOA
London Heathrow
Fri 6/11
18:30-19:40
1 stop28h 10m
Porto Alegre Salgado Filho
Tue 17/11
21:15-21:35
1 stop21h 20m
LondonPorto Alegre
LHR London Heathrow - POA Porto Alegre Salgado Filho
LHRPOA
London Heathrow
Thu 5/11
06:00-19:20
1 stop16h 20m
Porto Alegre Salgado Filho
Tue 17/11
21:15-17:30
1 stop17h 15m
LondonPorto Alegre
LHR London Heathrow - POA Porto Alegre Salgado Filho
LHRPOA
London Heathrow
Sun 22/11
20:15-15:20
1 stop22h 05m
Porto Alegre Salgado Filho
Sun 29/11
10:50-14:05
1 stop24h 15m
LondonPorto Alegre
LHR London Heathrow - POA Porto Alegre Salgado Filho
LHRPOA
London Heathrow
Sun 22/11
20:15-19:15
1 stop26h 00m
Porto Alegre Salgado Filho
Sun 29/11
09:20-14:05
1 stop25h 45m
LondonPorto Alegre
LHR London Heathrow - POA Porto Alegre Salgado Filho
LHRPOA
London Heathrow
Mon 9/11
20:15-15:20
1 stop22h 05m
Porto Alegre Salgado Filho
Mon 23/11
11:30-14:05
2 stops23h 35m
LondonPorto Alegre
LHR London Heathrow - POA Porto Alegre Salgado Filho
LHRPOA
London Heathrow
Sun 13/12
20:15-08:30
1 stop15h 15m
Porto Alegre Salgado Filho
Sun 10/1
20:05-14:05
1 stop15h 00m
See travel insights to Porto Alegre from
How to get the cheapest flight ticket from London Heathrow Airport to Porto Alegre
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest month to fly to Porto Alegre?
In general, April is the cheapest month to fly from London Heathrow Airport to Porto Alegre. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around £781. If you aren’t able to travel during the month of April, then book flights to Porto Alegre from London Heathrow Airport during November instead. Flights to Porto Alegre in November, while not as cheap as those in April, still average around £881.
Can stopping save me money on London Heathrow Airport to Porto Alegre flights?
You could potentially save up to 50% on your flight if you consider stops on a London Heathrow Airport to Porto Alegre flight.
What is the cheapest airline that flies from London Heathrow to Porto Alegre Salgado Filho?
TAP AIR PORTUGAL and United Airlines are the most popular carriers operating from London Heathrow to Porto Alegre Salgado Filho
Which airlines fly to Porto Alegre?
LATAM Airlines, TAP AIR PORTUGAL and Virgin Atlantic are the top three most popular airlines that fly to Porto Alegre from London Heathrow Airport according to our data. LATAM Airlines is the first choice among our users, with 68% of people opting to fly with this airline when travelling to Porto Alegre. Keep in mind that there are 3 different airlines that fly to Porto Alegre on a routine basis, so you have a few additional options to choose from.
Which airport is the most popular for stopovers for flights between London Heathrow Airport and Porto Alegre?
Sao Paulo (GRU) was the most common stop: 94% of momondo users choosing one-stop flights on this route connected there.
Which stopover airport offers the lowest fares from London Heathrow Airport to Porto Alegre?
Flights via Sao Paulo (GRU) offer the lowest average return price of £1,172.
Which stopover airport has the shortest travel time from London Heathrow Airport to Porto Alegre?
Flights connecting via Lisbon (LIS) have the shortest average one-way travel time: 16h 30m.
Which stopover airport has the shortest connection time from London Heathrow Airport to Porto Alegre?
Lisbon (LIS) has the shortest average stopover time for this route: 2h 09m.
When to book flights from London Heathrow Airport to Porto Alegre
Cheap London Heathrow Airport to Porto Alegre (LHR to POA) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from London Heathrow Airport to Porto Alegre
Frequently asked questions about flying from London Heathrow Airport to Porto Alegre
How far is London Heathrow to Porto Alegre Salgado Filho by plane?
The distance between London Heathrow and Porto Alegre Salgado Filho is about 6413.7 mi. 18h 40m is a normal flight duration for this route.
When did momondo last update prices for flights from London Heathrow Airport to Porto Alegre Salgado Filho Airport?
Prices for flights from London Heathrow Airport to Porto Alegre Salgado Filho Airport are updated daily.
How many operators does momondo search for flights from London Heathrow Airport to Porto Alegre Salgado Filho Airport?
The number of operators available for flights from London Heathrow Airport to Porto Alegre Salgado Filho Airport is 3 as of October 2026.
How old do you have to be to fly from London Heathrow Airport to Porto Alegre Salgado Filho Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from London Heathrow Airport to Porto Alegre Salgado Filho Airport.
What documentation or ID do you need to fly to Porto Alegre Salgado Filho Airport?
The required travel and health documents for your Porto Alegre Salgado Filho Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Porto Alegre Salgado Filho Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular airline from London Heathrow Airport to Porto Alegre?
Based on momondo bookings for flights between London Heathrow Airport and Porto Alegre, the leading airline is LATAM Airlines, making up 68% of the total bookings. Other popular airlines include TAP AIR PORTUGAL with 18% and Virgin Atlantic with 14%.
Best airlines flying from London Heathrow Airport to Porto Alegre
Compare and see reviews for airlines that fly from London Heathrow Airport to Porto Alegre with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom £762 | Free Cancellation | Rating 7.4 1,972 reviews | |||
| PriceFrom £778 | Free Cancellation | Rating 7.2 2,377 reviews | |||
| PriceFrom £1,162 | Free Cancellation | Rating 7.5 694 reviews |
Why use momondo?
Why should I use momondo to find a flight deal from London to Porto Alegre?
To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Porto Alegre from London.
Can I find flights from London to Porto Alegre with flexible booking policies on momondo?
Yes. All flights to Porto Alegre from London on momondo can be compared and filtered by various policies on offer, including flexible booking.
How can momondo help me find flights from London to Porto Alegre?
momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from London to Porto Alegre.
I’m not ready to book a flight from London to Porto Alegre right now. Can momondo alert me if prices change?
Price alerts on flights to Porto Alegre from London are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.