Find flights
When to book
Airlines
FAQs

Cheap flights from London to Porto Alegre from £483

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 22/4. Fares are subject to change and may not be available on all flights or dates of travel.
LON — POA
1 Apr — 8 Apr1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from London to Porto Alegre

Enter your travel dates to find the best prices.

Cheapest flights from London to Porto Alegre
Explore the most affordable flight options available from London to Porto Alegre. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 2 March 2026.

Sat 7/306:00
LHR
-
POA
1 stop16h 40m
TAP AIR PORTUGAL
Sat 14/321:10
POA
-
LHR
1 stop15h 20m
TAP AIR PORTUGAL
Deal found 28/2£727
Fri 10/414:30
LGW
-
POA
3 stops23h 40m
Multiple Airlines
Sun 26/405:25
POA
-
LGW
2 stops23h 35m
Multiple Airlines
Deal found 2/3£802
Fri 17/406:00
LHR
-
POA
2 stops22h 15m
Multiple Airlines
Fri 8/505:30
POA
-
LHR
2 stops30h 05m
Multiple Airlines
Deal found 26/2£809
Mon 4/521:20
LHR
-
POA
2 stops25h 25m
LATAM Airlines
Thu 21/520:05
POA
-
LHR
1 stop15h 00m
LATAM Airlines
Deal found 28/2£813
Fri 10/406:30
LHR
-
POA
2 stops21h 50m
Multiple Airlines
Tue 12/521:55
POA
-
LHR
2 stops38h 40m
Multiple Airlines
Deal found 2/3£827
Thu 16/421:20
LHR
-
POA
1 stop18h 45m
LATAM Airlines
Wed 6/510:05
POA
-
LHR
1 stop25h 00m
LATAM Airlines
Deal found 26/2£829
Fri 17/421:20
LHR
-
POA
1 stop15h 30m
LATAM Airlines
Fri 8/519:35
POA
-
LHR
2 stops39h 30m
LATAM Airlines
Deal found 26/2£830
Mon 13/421:20
LHR
-
POA
1 stop18h 20m
LATAM Airlines
Sat 16/521:40
POA
-
LHR
2 stops37h 25m
LATAM Airlines
Deal found 2/3£832
Wed 15/421:20
LHR
-
POA
1 stop15h 30m
LATAM Airlines
Wed 13/520:05
POA
-
LHR
1 stop15h 00m
LATAM Airlines
Deal found 2/3£835
Fri 10/417:40
LGW
-
POA
2 stops20h 30m
Multiple Airlines
Thu 30/415:20
POA
-
LGW
2 stops24h 15m
Multiple Airlines
Deal found 1/3£835
Wed 15/417:05
LGW
-
POA
2 stops19h 40m
Multiple Airlines
Wed 22/421:20
POA
-
LGW
2 stops22h 20m
Multiple Airlines
Deal found 1/3£846
Thu 16/406:00
LGW
-
POA
3 stops42h 30m
Multiple Airlines
Fri 1/506:20
POA
-
LGW
2 stops30h 05m
Multiple Airlines
Deal found 2/3£868

Find flight deals from London to Porto Alegre

Discover tips and strategies to find the most affordable flight options for your journey from London (LON) 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 2 March 2026.

Round-trip from

£809

One-way from

£483

Popular in

July

Cheapest in

May

Average price

£854
17/4-8/5
  • 17/4-8/5
  • 4 total stops
  • 52h 20m total
  • London to Porto Alegre
Search Deals
LATAM Airlines
  • LATAM Airlines
  • 22/4
  • 1 total stop
  • 18h 20m total
  • London to Porto Alegre
Search Deals
Highest demand for flights based on searches. 12% potential increase in price (£100 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£24 potential savings vs. average return price).
Search Deals
Average for round-trip flights in March 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from London 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 2 March 2026.
Use the filters below to find and compare flights from London to Porto Alegre that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LondonPorto Alegre

LHR - POA

LHRPOA

London Heathrow

Mon 4/5

21:20-09:15

1 stop15h 55m

Porto Alegre Salgado Filho

Thu 21/5

20:05-15:05

1 stop15h 00m

£813

LondonPorto Alegre

LGW - POA

LGWPOA

London Gatwick

Sat 11/4

06:00-10:35

3 stops32h 35m

Porto Alegre Salgado Filho

Thu 30/4

17:50-09:45

3 stops35h 55m

£880

LondonPorto Alegre

LHR - POA

LHRPOA

London Heathrow

Tue 14/4

08:40-00:45

2 stops20h 05m

Porto Alegre Salgado Filho

Wed 13/5

13:35-13:45

2 stops20h 10m

£891

LondonPorto Alegre

LGW - POA

LGWPOA

London Gatwick

Sat 11/4

17:00-10:35

2 stops21h 35m

Porto Alegre Salgado Filho

Fri 1/5

15:15-15:40

2 stops20h 25m

£892

LondonPorto Alegre

LHR - POA

LHRPOA

London Heathrow

Thu 16/4

08:00-20:25

1 stop16h 25m

Porto Alegre Salgado Filho

Wed 6/5

08:25-10:20

2 stops21h 55m

£915

LondonPorto Alegre

LHR - POA

LHRPOA

London Heathrow

Sat 30/5

20:05-09:15

2 stops41h 10m

Porto Alegre Salgado Filho

Tue 16/6

14:20-16:35

3 stops22h 15m

£928

LondonPorto Alegre

LGW - POA

LGWPOA

London Gatwick

Thu 9/4

10:00-10:55

2 stops28h 55m

Porto Alegre Salgado Filho

Thu 7/5

18:25-09:00

2 stops34h 35m

£958

LondonPorto Alegre

LGW - POA

LGWPOA

London Gatwick

Thu 9/4

10:00-10:55

2 stops28h 55m

Porto Alegre Salgado Filho

Tue 5/5

05:30-16:25

2 stops30h 55m

£958

LondonPorto Alegre

LCY - POA

LCYPOA

London City

Tue 14/4

18:05-11:40

2 stops21h 35m

Porto Alegre Salgado Filho

Mon 11/5

14:20-17:30

2 stops23h 10m

£979

LondonPorto Alegre

LCY - POA

LCYPOA

London City

Mon 13/4

18:30-08:50

2 stops18h 20m

Porto Alegre Salgado Filho

Wed 13/5

14:20-18:40

2 stops24h 20m

£985

Flights are sorted by cheapest return flights first.

Deals found on 28/2

Showing 1-10 of 46 resultsSorted by cheapest first
1
2
3
...
5

Best time to book a flight from London to Porto Alegre

Have a flexible travel schedule? Discover the best time to fly to Porto Alegre from London 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 to Porto Alegre

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

Use this chart to determine the optimal time to book a return flight from London to Porto Alegre. Price data was last updated on 27 February 2026.

The best time to book flights from London to Porto Alegre is 73 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 London to Porto Alegre?

Currently, January is the cheapest month in which you can book a flight from London to Porto Alegre (average of £663). Flying from London to Porto Alegre in July is currently the most expensive (average of £1,002). 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.

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

What’s the top stopover airport for flights from London to Porto Alegre?

Share of one-stop return flights from London 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 57% of one-stop itineraries from London to Porto Alegre on Cheapflights.

What’s the cheapest stopover airport for flights from London to Porto Alegre?

Average return fare for one-stop flights from London to Porto Alegre, chosen by Cheapflights users in the past 12 months, with the same stopover each way.

Lisbon (LIS) is the most affordable one-stop option, with an average return flight price of £1,103.

What’s the fastest stopover option from London to Porto Alegre?

Shortest average travel time for one-stop one-way flights from London 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 01m.

Which airport typically offers the quickest stopover for flights from London to Porto Alegre?

Average stopover duration for one-stop one-way flights from London 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 33m.

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 2 March 2026.
Get a feel of what it's like to fly with KLM, Virgin Atlantic, andLATAM Airlines from London to Porto Alegre by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.7
Good
1,461 reviews
Check prices

Entertainment

7.1

Crew

8.4

Boarding

7.8

Overall

7.7

Comfort

7.6

Food

7.3

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas
KLM
7.7
Good
1,461 reviews
KLM
7.7
Good
1,461 reviews
Check prices

Entertainment

7.1

Crew

8.4

Boarding

7.8

Overall

7.7

Comfort

7.6

Food

7.3

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas
Virgin Atlantic
7.5
Good
680 reviews
KLM
7.7
Good
1,461 reviews
Check prices

Entertainment

7.1

Crew

8.4

Boarding

7.8

Overall

7.7

Comfort

7.6

Food

7.3

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas
LATAM Airlines
7.4
Good
1,917 reviews
KLM
7.7
Good
1,461 reviews
Check prices

Entertainment

7.1

Crew

8.4

Boarding

7.8

Overall

7.7

Comfort

7.6

Food

7.3

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas
TAP AIR PORTUGAL
7.1
Good
2,155 reviews
KLM
7.7
Good
1,461 reviews
Check prices

Entertainment

7.1

Crew

8.4

Boarding

7.8

Overall

7.7

Comfort

7.6

Food

7.3

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas
Lufthansa
6.8
Okay
7,820 reviews
KLM
7.7
Good
1,461 reviews
Check prices

Entertainment

7.1

Crew

8.4

Boarding

7.8

Overall

7.7

Comfort

7.6

Food

7.3

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas

Related info for your journey

Find useful and relevant information for your journey from London 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?

    If you book a flight to Porto Alegre from London, you will be flying to Salgado Filho, which is the city’s only airport. Porto Alegre Salgado Filho (POA) is located 4.0 mi from the center of Porto Alegre. There are 0 flights from London to Salgado Filho per day from 3 different airlines.

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

    There are many flights that can get you from London to Porto Alegre in 15h 55m. Fly via LATAM Airlines, Air Europa, or TAP AIR PORTUGAL to get the fastest option. The distance between London 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 to Porto Alegre round-trip?

    TAP AIR PORTUGAL, at £696, was found to be the cheapest airline from London to Porto Alegre.Alternate airlines flying return to your destination include LATAM Airlines and Virgin Atlantic. These flights start at 27% lower than the current average price 3 months from now.

  • What are the most popular routes from London to Porto Alegre?

    The most popular route from London to Porto Alegre is London Heathrow - Porto Alegre Salgado Filho. You may also consider London Gatwick - Porto Alegre Salgado Filho or London City - Porto Alegre Salgado Filho.

  • Can I find deals for flights from London to Porto Alegre that include hotel bookings?

    Yes. In addition to deals on London to Porto Alegre flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from London to Porto Alegre?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from London to Porto Alegre.

  • Can I find deals for business class flights from London to Porto Alegre?

    Yes. Cheapflights offers flight deals from London 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 to Porto Alegre?

    Currently, January is the cheapest month in which you can book a flight from London to Porto Alegre (average of £663). Flying from London to Porto Alegre in July is currently the most expensive (average of £1,002). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for London to Porto Alegre

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

Top 3 airlines flying from London to Porto Alegre

Discover the top 3 airlines that operate flights from London 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 2 March 2026.
AirlineCheapestAverageFlexibilityOn-time
TAP AIR PORTUGALCheapest£696Average£931FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
LATAM AirlinesCheapest£742Average£1,022FlexibilityNo cancel feeOn-time81%
Search LATAM Airlines flights
Virgin AtlanticCheapest£1,124Average£1,581FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic 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 London to Porto Alegre?

Cheapflights makes it easy to find London to Porto Alegre 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 London to Porto Alegre?

Millions of users choose and trust Cheapflights to book the best flight deals from London to Porto Alegre for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Can Cheapflights find flights from London to Porto Alegre with no change fees?

Yes, we can. To see specific flights from London to Porto Alegre with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights from London to Porto Alegre become cheaper?

Yes, Cheapflights offers price alerts on London to Porto Alegre 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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.