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Cheap flights from London to Porto Alegre from £448

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 16/4. 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.
Multiple Airlines Logo
16:45 - 16:30
LCY
-
POA
26h 45m
2 stops
Multiple Airlines Logo
13:40 - 10:55
POA
-
LCY
42h 15m
2 stops
£754Multiple Airlines
Wed, 25 Feb - Wed, 25 Mar
Multiple Airlines Logo
17:25 - 16:30
LGW
-
POA
26h 05m
2 stops
Multiple Airlines Logo
08:00 - 09:00
POA
-
LGW
22h 00m
2 stops
£765Multiple Airlines
Wed, 25 Feb - Wed, 25 Mar
Multiple Airlines Logo
06:00 - 23:55
LHR
-
POA
20h 55m
2 stops
Multiple Airlines Logo
10:45 - 14:35
POA
-
LHR
24h 50m
2 stops
£782Multiple Airlines
Wed, 25 Feb - Wed, 18 Mar
KLM Logo
08:40 - 23:55
LHR
-
POA
19h 15m
2 stops
KLM Logo
18:25 - 17:35
POA
-
LHR
19h 10m
2 stops
£800KLM
Mon, 4 May - Thu, 21 May
LATAM Airlines Logo
20:15 - 11:35
LHR
-
POA
18h 20m
1 stop
LATAM Airlines Logo
20:10 - 14:05
POA
-
LHR
14h 55m
1 stop
£801LATAM Airlines
Mon, 2 Mar - Thu, 19 Mar
LATAM Airlines Logo
20:15 - 11:35
LHR
-
POA
18h 20m
1 stop
LATAM Airlines Logo
17:55 - 14:05
POA
-
LHR
17h 10m
1 stop
£807LATAM Airlines
Mon, 2 Mar - Thu, 19 Mar
TAP AIR PORTUGAL Logo
13:40 - 19:40
LHR
-
POA
33h 00m
1 stop
TAP AIR PORTUGAL Logo
11:00 - 11:25
POA
-
LHR
21h 25m
2 stops
£830TAP AIR PORTUGAL
Mon, 2 Mar - Thu, 19 Mar
TAP AIR PORTUGAL Logo
19:50 - 21:45
LHR
-
POA
29h 55m
1 stop
TAP AIR PORTUGAL Logo
11:00 - 11:00
POA
-
LHR
20h 00m
2 stops
£836TAP AIR PORTUGAL
Mon, 4 May - Thu, 21 May
Lufthansa Logo
09:50 - 11:35
LCY
-
POA
28h 45m
2 stops
Lufthansa Logo
11:00 - 17:55
POA
-
LCY
26h 55m
2 stops
£960Lufthansa
Wed, 18 Mar - Tue, 28 Apr
KLM Logo
17:50 - 23:40
LCY
-
POA
32h 50m
2 stops
KLM Logo
17:10 - 18:30
POA
-
LCY
21h 20m
2 stops
£1,003KLM
Tue, 3 Mar - Tue, 31 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
18h 20m
1 stop
POA11:35Porto Alegre Salgado Filho
19 Mar
POA17:55Porto Alegre Salgado Filho
17h 10m
1 stop
LHR14:05London Heathrow
£807
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
£813
LATAM Airlines
3 Mar
LHR20:15London Heathrow
15h 30m
1 stop
POA08:45Porto Alegre Salgado Filho
31 Mar
POA20:45Porto Alegre Salgado Filho
14h 20m
1 stop
LHR15:05London Heathrow
£840

TAP AIR PORTUGAL flights from London to Porto Alegre

Our best TAP AIR PORTUGAL deals on London to Porto Alegre flight tickets
TAP AIR PORTUGAL
2 Mar
LHR13:40London Heathrow
33h 00m
1 stop
POA19:40Porto Alegre Salgado Filho
19 Mar
POA11:00Porto Alegre Salgado Filho
21h 25m
2 stops
LHR11:25London Heathrow
£830
TAP AIR PORTUGAL
4 May
LHR19:50London Heathrow
29h 55m
1 stop
POA21:45Porto Alegre Salgado Filho
21 May
POA11:00Porto Alegre Salgado Filho
20h 00m
2 stops
LHR11:00London Heathrow
£836
TAP AIR PORTUGAL
4 May
LHR19:50London Heathrow
29h 55m
1 stop
POA21:45Porto Alegre Salgado Filho
21 May
POA11:00Porto Alegre Salgado Filho
20h 00m
2 stops
LHR11:00London Heathrow
£837

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 1 February 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

LCY - POA

LCYPOA

London City

Wed 25/2

16:45-16:30

2 stops26h 45m

Porto Alegre Salgado Filho

Wed 25/3

13:40-10:55

2 stops42h 15m

£754

LondonPorto Alegre

LGW - POA

LGWPOA

London Gatwick

Wed 25/2

17:25-16:30

2 stops26h 05m

Porto Alegre Salgado Filho

Wed 25/3

08:00-09:00

2 stops22h 00m

£765

LondonPorto Alegre

LHR - POA

LHRPOA

London Heathrow

Wed 25/2

06:00-23:55

2 stops20h 55m

Porto Alegre Salgado Filho

Wed 18/3

10:45-14:35

2 stops24h 50m

£782

LondonPorto Alegre

LHR - POA

LHRPOA

London Heathrow

Mon 4/5

08:40-23:55

2 stops19h 15m

Porto Alegre Salgado Filho

Thu 21/5

18:25-17:35

2 stops19h 10m

£800

LondonPorto Alegre

LHR - POA

LHRPOA

London Heathrow

Mon 2/3

20:15-11:35

1 stop18h 20m

Porto Alegre Salgado Filho

Thu 19/3

20:10-14:05

1 stop14h 55m

£801

LondonPorto Alegre

LHR - POA

LHRPOA

London Heathrow

Mon 2/3

20:15-11:35

1 stop18h 20m

Porto Alegre Salgado Filho

Thu 19/3

17:55-14:05

1 stop17h 10m

£807

LondonPorto Alegre

LHR - POA

LHRPOA

London Heathrow

Mon 2/3

13:40-19:40

1 stop33h 00m

Porto Alegre Salgado Filho

Thu 19/3

11:00-11:25

2 stops21h 25m

£830

LondonPorto Alegre

LHR - POA

LHRPOA

London Heathrow

Mon 4/5

19:50-21:45

1 stop29h 55m

Porto Alegre Salgado Filho

Thu 21/5

11:00-11:00

2 stops20h 00m

£836

LondonPorto Alegre

LCY - POA

LCYPOA

London City

Wed 18/3

09:50-11:35

2 stops28h 45m

Porto Alegre Salgado Filho

Tue 28/4

11:00-17:55

2 stops26h 55m

£960

LondonPorto Alegre

LCY - POA

LCYPOA

London City

Tue 3/3

17:50-23:40

2 stops32h 50m

Porto Alegre Salgado Filho

Tue 31/3

17:10-18:30

2 stops21h 20m

£1,003

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, May 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 £727. If you aren’t able to travel during the month of May, then book flights to Porto Alegre from London during February instead. Flights to Porto Alegre in February, while not as cheap as those in May, still average around £764.

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 £922 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 £721 on momondo.

Can stopping save me money on London to Porto Alegre flights?

You could potentially save up to 12% on your flight if you consider stops on a London to Porto Alegre flight.

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

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 40m

Direct flights

None
The fastest flight from London to Porto Alegre takes 16h 40m
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 40m.

  • 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 £682Free CancellationRating
7.1
2,132 reviews
Search TAP AIR PORTUGAL flights
LATAM AirlinesPriceFrom £714Free CancellationRating
7.5
1,917 reviews
Search LATAM Airlines flights
Virgin AtlanticPriceFrom £1,100Free CancellationRating
7.5
678 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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LATAM Airlines
TAP AIR PORTUGAL
Virgin Atlantic