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Cheap flights from London to Porto Alegre from £478

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 to Porto Alegre departing on 10/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from London to Porto Alegre

Cheap return flights

Enter your travel dates to find the best prices.
LATAM Airlines Logo
20:15 - 22:50
LHR
-
POA
29h 35m2 stops
LATAM Airlines Logo
20:10 - 14:05
POA
-
LHR
14h 55m1 stop
£797LATAM Airlines
Mon, 2 Mar - Thu, 19 Mar
LATAM Airlines Logo
20:15 - 22:50
LHR
-
POA
29h 35m2 stops
LATAM Airlines Logo
20:10 - 14:05
POA
-
LHR
14h 55m1 stop
£800LATAM Airlines
Mon, 2 Mar - Thu, 19 Mar
Multiple Airlines Logo
19:05 - 22:55
LCY
-
POA
30h 50m3 stops
Multiple Airlines Logo
11:40 - 12:40
POA
-
LCY
22h 00m3 stops
£800Multiple Airlines
Tue, 10 Feb - Tue, 17 Feb
Multiple Airlines Logo
07:15 - 10:15
LGW
-
POA
30h 00m3 stops
Multiple Airlines Logo
10:30 - 14:30
POA
-
LGW
25h 00m2 stops
£807Multiple Airlines
Tue, 10 Feb - Tue, 17 Feb
TAP AIR PORTUGAL Logo
18:30 - 17:55
LHR
-
POA
26h 25m1 stop
TAP AIR PORTUGAL Logo
05:15 - 12:45
POA
-
LHR
27h 30m2 stops
£821TAP AIR PORTUGAL
Wed, 25 Mar - Wed, 15 Apr
TAP AIR PORTUGAL Logo
16:35 - 17:55
LGW
-
POA
28h 20m1 stop
TAP AIR PORTUGAL Logo
05:15 - 14:00
POA
-
LGW
28h 45m2 stops
£834TAP AIR PORTUGAL
Wed, 25 Mar - Wed, 15 Apr
KLM Logo
07:45 - 23:40
LCY
-
POA
18h 55m2 stops
KLM Logo
18:30 - 16:40
POA
-
LCY
18h 10m2 stops
£847KLM
Thu, 26 Feb - Tue, 31 Mar
KLM Logo
07:45 - 23:40
LCY
-
POA
18h 55m2 stops
KLM Logo
18:30 - 17:20
POA
-
LCY
18h 50m2 stops
£848KLM
Thu, 26 Feb - Mon, 30 Mar
Turkish Airlines Logo
10:15 - 08:20
LGW
-
POA
49h 05m2 stops
Turkish Airlines Logo
14:50 - 09:25
POA
-
LGW
39h 35m2 stops
£858Turkish Airlines
Tue, 10 Feb - Tue, 17 Feb
Turkish Airlines Logo
17:05 - 08:20
LGW
-
POA
42h 15m2 stops
Turkish Airlines Logo
11:45 - 22:25
POA
-
LGW
30h 40m2 stops
£891Turkish Airlines
Mon, 23 Feb - Sun, 29 Mar

LATAM Airlines flights from London to Porto Alegre

Our best LATAM Airlines deals on London to Porto Alegre flight tickets
LATAM Airlines
2 Mar
LHR20:15London Heathrow
16h 05m
1 stop
POA09:20Porto Alegre Salgado Filho
19 Mar
POA17:55Porto Alegre Salgado Filho
17h 10m
1 stop
LHR14:05London Heathrow
£797
Find similar
LATAM Airlines
2 Mar
LHR20:15London Heathrow
29h 35m
2 stops
POA22:50Porto Alegre Salgado Filho
19 Mar
POA20:10Porto Alegre Salgado Filho
14h 55m
1 stop
LHR14:05London Heathrow
£800
Find similar
LATAM Airlines
3 Feb
LHR20:15London Heathrow
16h 00m
1 stop
POA09:15Porto Alegre Salgado Filho
10 Feb
POA19:30Porto Alegre Salgado Filho
39h 35m
2 stops
LHR14:05London Heathrow
£807
Find similar

KLM flights from London to Porto Alegre

Our best KLM deals on London to Porto Alegre flight tickets
KLM
25 Feb
LHR06:30London Heathrow
20h 10m
2 stops
POA23:40Porto Alegre Salgado Filho
31 Mar
POA18:30Porto Alegre Salgado Filho
19h 05m
2 stops
LHR17:35London Heathrow
£838
Find similar
KLM
25 Feb
LHR06:30London Heathrow
20h 10m
2 stops
POA23:40Porto Alegre Salgado Filho
29 Mar
POA18:30Porto Alegre Salgado Filho
19h 05m
2 stops
LHR17:35London Heathrow
£839
Find similar
KLM
26 Feb
LCY07:45London City
18h 55m
2 stops
POA23:40Porto Alegre Salgado Filho
31 Mar
POA18:30Porto Alegre Salgado Filho
18h 10m
2 stops
LCY16:40London City
£847
Find similar

momondo 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, momondo users made 279,928 searches. Data last updated 28 December 2025.
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 2/3

20:15-22:50

2 stops29h 35m

Porto Alegre Salgado Filho

Thu 19/3

20:10-14:05

1 stop14h 55m

£797

LondonPorto Alegre

LHR - POA

LHRPOA

London Heathrow

Mon 2/3

20:15-22:50

2 stops29h 35m

Porto Alegre Salgado Filho

Thu 19/3

20:10-14:05

1 stop14h 55m

£800

LondonPorto Alegre

LCY - POA

LCYPOA

London City

Tue 10/2

19:05-22:55

3 stops30h 50m

Porto Alegre Salgado Filho

Tue 17/2

11:40-12:40

3 stops22h 00m

£800

LondonPorto Alegre

LGW - POA

LGWPOA

London Gatwick

Tue 10/2

07:15-10:15

3 stops30h 00m

Porto Alegre Salgado Filho

Tue 17/2

10:30-14:30

2 stops25h 00m

£807

LondonPorto Alegre

LHR - POA

LHRPOA

London Heathrow

Wed 25/3

18:30-17:55

1 stop26h 25m

Porto Alegre Salgado Filho

Wed 15/4

05:15-12:45

2 stops27h 30m

£821

LondonPorto Alegre

LGW - POA

LGWPOA

London Gatwick

Wed 25/3

16:35-17:55

1 stop28h 20m

Porto Alegre Salgado Filho

Wed 15/4

05:15-14:00

2 stops28h 45m

£834

LondonPorto Alegre

LCY - POA

LCYPOA

London City

Thu 26/2

07:45-23:40

2 stops18h 55m

Porto Alegre Salgado Filho

Tue 31/3

18:30-16:40

2 stops18h 10m

£847

LondonPorto Alegre

LCY - POA

LCYPOA

London City

Thu 26/2

07:45-23:40

2 stops18h 55m

Porto Alegre Salgado Filho

Mon 30/3

18:30-17:20

2 stops18h 50m

£848

LondonPorto Alegre

LGW - POA

LGWPOA

London Gatwick

Tue 10/2

10:15-08:20

2 stops49h 05m

Porto Alegre Salgado Filho

Tue 17/2

14:50-09:25

2 stops39h 35m

£858

LondonPorto Alegre

LGW - POA

LGWPOA

London Gatwick

Mon 23/2

17:05-08:20

2 stops42h 15m

Porto Alegre Salgado Filho

Sun 29/3

11:45-22:25

2 stops30h 40m

£891

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Porto Alegre from

How to get the cheapest flight ticket from London 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 typical price of a round-trip flight between London and Porto Alegre?

What is the cheapest month to fly to Porto Alegre?

In general, April is the cheapest month to fly from London to Porto Alegre. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around £763. If you aren’t able to travel during the month of April, then book flights to Porto Alegre from London during May instead. Flights to Porto Alegre in May, while not as cheap as those in April, still average around £769.

How far in advance should I book a flight to Porto Alegre?

You are more likely to see cheaper flights to Porto Alegre from London when booking weeks ahead of your departure date. In general, you can expect to find flights to Porto Alegre for around £933 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Porto Alegre from London for as low as £710 on momondo.

How have London to Porto Alegre flight prices changed over time?

As of December 2025, prices for London to Porto Alegre flights are approximately 37% more expensive when compared to flights at the same time last year.

When to book flights from London to Porto Alegre

Are you open to changing your travel dates? Check out the ideal times to fly from London to Porto Alegre according to our flight data. Find out which month and days have the cheapest flights.
Estimated return price

Cheap London to Porto Alegre (LON to POA) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from London to Porto Alegre

Fastest flight time

16h 20m

Direct flights

None
The fastest flight from London to Porto Alegre takes 16h 20m
There are no direct flights from London to Porto Alegre. There are no popular flight routes from London to Porto Alegre.
Search flight deals

  • How far is London to Porto Alegre Salgado Filho by plane?

    Porto Alegre Salgado Filho is 6424.7 mi away from London. In terms of flight time, this usually takes a little over 16h 20m.

  • When did momondo last update prices for flights from London to Porto Alegre Salgado Filho Airport?

    Prices for flights from London to Porto Alegre Salgado Filho Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from London to Porto Alegre Salgado Filho Airport?

  • How old do you have to be to fly from London 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 to Porto Alegre Salgado Filho Airport.

  • What documentation or ID do you need to fly to Porto Alegre Salgado Filho Airport?

    The necessary travel and health documents for your Porto Alegre Salgado Filho Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from London to Porto Alegre?

Best airlines flying from London to Porto Alegre

Compare and see reviews for airlines that fly from London to Porto Alegre with momondo
Airline
Rating
Free Cancellation
Price
TAP AIR PORTUGALPriceFrom £629Free CancellationRating
7.2
2,098 reviews
Search TAP AIR PORTUGAL flights
Air FrancePriceFrom £641Free CancellationRating
7.4
1,515 reviews
Search Air France flights
LATAM AirlinesPriceFrom £701Free CancellationRating
7.5
1,895 reviews
Search LATAM Airlines flights
Virgin AtlanticPriceFrom £1,115Free CancellationRating
7.5
677 reviews
Search Virgin Atlantic flights

Why use momondo?

Why should I use momondo to find a flight deal from London to Porto Alegre?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from London to Porto Alegre for you.

Can I find flights from London to Porto Alegre with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for London to Porto Alegre flights to just show those with flexible booking policies.

How can momondo help me find flights from London to Porto Alegre?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Porto Alegre from London.

I’m not ready to book a flight from London to Porto Alegre right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Porto Alegre from London. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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Airlines are sorted and displayed according to clicks in the past 7 days on momondo
LATAM Airlines
TAP AIR PORTUGAL
Virgin Atlantic
Air France