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Cheap flights from London to Porto Alegre from £374

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 26/2. 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
17:05 - 23:30
LHR
-
POA
33h 25m
2 stops
Multiple Airlines Logo
14:25 - 13:45
POA
-
LHR
19h 20m
2 stops
£780Multiple Airlines
Thu, 12 Mar - Tue, 31 Mar
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
£783LATAM Airlines
Sun, 1 Mar - Sun, 15 Mar
LATAM Airlines Logo
07:00 - 08:10
LHR
-
POA
28h 10m
2 stops
LATAM Airlines Logo
17:50 - 14:05
POA
-
LHR
17h 15m
1 stop
£790LATAM Airlines
Sun, 1 Mar - Sun, 15 Mar
Air Europa Logo
17:25 - 09:05
LGW
-
POA
19h 40m
2 stops
Air Europa Logo
05:30 - 16:25
POA
-
LGW
30h 55m
2 stops
£793Air Europa
Mon, 13 Apr - Thu, 14 May
Air Europa Logo
17:25 - 16:25
LGW
-
POA
26h 00m
2 stops
Air Europa Logo
08:25 - 16:25
POA
-
LGW
29h 00m
2 stops
£817Air Europa
Sun, 1 Mar - Sun, 15 Mar
SWISS Logo
07:00 - 11:35
LHR
-
POA
31h 35m
3 stops
SWISS Logo
14:20 - 08:15
POA
-
LHR
37h 55m
3 stops
£820SWISS
Wed, 25 Mar - Tue, 9 Jun
KLM Logo
07:45 - 23:40
LCY
-
POA
18h 55m
2 stops
KLM Logo
17:10 - 17:20
POA
-
LCY
20h 10m
2 stops
£930KLM
Thu, 12 Mar - Tue, 31 Mar
KLM Logo
10:00 - 00:20
LCY
-
POA
18h 20m
2 stops
KLM Logo
18:25 - 17:20
POA
-
LCY
18h 55m
2 stops
£971KLM
Tue, 14 Apr - Thu, 14 May
Lufthansa Logo
18:15 - 13:15
LCY
-
POA
22h 00m
2 stops
Lufthansa Logo
14:25 - 17:55
POA
-
LCY
23h 30m
2 stops
£981Lufthansa
Tue, 17 Mar - Tue, 14 Apr
Lufthansa Logo
09:15 - 13:10
LCY
-
POA
31h 55m
2 stops
Lufthansa Logo
11:00 - 17:55
POA
-
LCY
26h 55m
2 stops
£993Lufthansa
Thu, 16 Apr - Sat, 16 May

Air Europa flights from London to Porto Alegre

Our best Air Europa deals on London to Porto Alegre flight tickets
Air Europa
13 Apr
LGW17:25London Gatwick
19h 40m
2 stops
POA09:05Porto Alegre Salgado Filho
14 May
POA05:30Porto Alegre Salgado Filho
30h 55m
2 stops
LGW16:25London Gatwick
£793
Air Europa
1 Mar
LGW17:25London Gatwick
26h 00m
2 stops
POA16:25Porto Alegre Salgado Filho
15 Mar
POA08:25Porto Alegre Salgado Filho
29h 00m
2 stops
LGW16:25London Gatwick
£817
Air Europa
10 Apr
LGW10:00London Gatwick
36h 40m
2 stops
POA18:40Porto Alegre Salgado Filho
14 May
POA09:45Porto Alegre Salgado Filho
19h 15m
2 stops
LGW09:00London Gatwick
£833

KLM flights from London to Porto Alegre

Our best KLM deals on London to Porto Alegre flight tickets
KLM
4 May
LHR06:30London Heathrow
21h 25m
2 stops
POA23:55Porto Alegre Salgado Filho
21 May
POA15:45Porto Alegre Salgado Filho
21h 50m
2 stops
LHR17:35London Heathrow
£861
KLM
4 May
LHR08:40London Heathrow
19h 15m
2 stops
POA23:55Porto Alegre Salgado Filho
21 May
POA16:15Porto Alegre Salgado Filho
21h 20m
2 stops
LHR17:35London Heathrow
£873
KLM
12 Apr
LHR08:40London Heathrow
19h 50m
2 stops
POA00:30Porto Alegre Salgado Filho
13 May
POA18:25Porto Alegre Salgado Filho
19h 10m
2 stops
LHR17:35London Heathrow
£877

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 16 January 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

Thu 12/3

17:05-23:30

2 stops33h 25m

Porto Alegre Salgado Filho

Tue 31/3

14:25-13:45

2 stops19h 20m

£780

LondonPorto Alegre

LHR - POA

LHRPOA

London Heathrow

Sun 1/3

20:15-11:35

1 stop18h 20m

Porto Alegre Salgado Filho

Sun 15/3

20:10-14:05

1 stop14h 55m

£783

LondonPorto Alegre

LHR - POA

LHRPOA

London Heathrow

Sun 1/3

07:00-08:10

2 stops28h 10m

Porto Alegre Salgado Filho

Sun 15/3

17:50-14:05

1 stop17h 15m

£790

LondonPorto Alegre

LGW - POA

LGWPOA

London Gatwick

Mon 13/4

17:25-09:05

2 stops19h 40m

Porto Alegre Salgado Filho

Thu 14/5

05:30-16:25

2 stops30h 55m

£793

LondonPorto Alegre

LGW - POA

LGWPOA

London Gatwick

Sun 1/3

17:25-16:25

2 stops26h 00m

Porto Alegre Salgado Filho

Sun 15/3

08:25-16:25

2 stops29h 00m

£817

LondonPorto Alegre

LHR - POA

LHRPOA

London Heathrow

Wed 25/3

07:00-11:35

3 stops31h 35m

Porto Alegre Salgado Filho

Tue 9/6

14:20-08:15

3 stops37h 55m

£820

LondonPorto Alegre

LCY - POA

LCYPOA

London City

Thu 12/3

07:45-23:40

2 stops18h 55m

Porto Alegre Salgado Filho

Tue 31/3

17:10-17:20

2 stops20h 10m

£930

LondonPorto Alegre

LCY - POA

LCYPOA

London City

Tue 14/4

10:00-00:20

2 stops18h 20m

Porto Alegre Salgado Filho

Thu 14/5

18:25-17:20

2 stops18h 55m

£971

LondonPorto Alegre

LCY - POA

LCYPOA

London City

Tue 17/3

18:15-13:15

2 stops22h 00m

Porto Alegre Salgado Filho

Tue 14/4

14:25-17:55

2 stops23h 30m

£981

LondonPorto Alegre

LCY - POA

LCYPOA

London City

Thu 16/4

09:15-13:10

2 stops31h 55m

Porto Alegre Salgado Filho

Sat 16/5

11:00-17:55

2 stops26h 55m

£993

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 £743. 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 £780.

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 £943 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 £737 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

18h 20m

Direct flights

None
The fastest flight from London to Porto Alegre takes 18h 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 18h 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 £696Free CancellationRating
7.1
2,121 reviews
Search TAP AIR PORTUGAL flights
LATAM AirlinesPriceFrom £706Free CancellationRating
7.5
1,906 reviews
Search LATAM Airlines flights
Virgin AtlanticPriceFrom £1,123Free 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.

An easier way to manage your Porto Alegre trip

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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