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Cheap flights from Porto Alegre to London from £357

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Porto Alegre to London departing on 1/12. 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 Porto Alegre to London

Cheap return flights

Enter your travel dates to find the best prices.
LATAM Airlines Logo
12:20 - 14:05POA-LHR
22h 45m1 stop
LATAM Airlines Logo
20:15 - 16:50LHR-POA
23h 35m2 stops
£654LATAM Airlines
Find Deal
Mon, 16 Mar - Mon, 23 Mar
LATAM Airlines Logo
20:10 - 14:05POA-LHR
14h 55m1 stop
LATAM Airlines Logo
20:15 - 09:15LHR-POA
16h 00m1 stop
£655LATAM Airlines
Find Deal
Wed, 11 Mar - Wed, 18 Mar
KLM Logo
13:40 - 16:05POA-LHR
23h 25m2 stops
KLM Logo
06:30 - 00:40LHR-POA
22h 10m2 stops
£744KLM
Find Deal
Tue, 10 Mar - Tue, 31 Mar
Multiple Airlines Logo
13:40 - 16:05POA-LHR
23h 25m2 stops
Multiple Airlines Logo
06:20 - 23:30LHR-POA
20h 10m2 stops
£745Multiple Airlines
Find Deal
Tue, 10 Mar - Wed, 25 Mar
KLM Logo
13:40 - 16:05POA-LHR
23h 25m2 stops
KLM Logo
06:30 - 23:30LHR-POA
20h 00m2 stops
£746KLM
Find Deal
Tue, 10 Mar - Wed, 25 Mar
Multiple Airlines Logo
21:10 - 18:40POA-STN
18h 30m1 stop
Multiple Airlines Logo
05:55 - 19:40STN-POA
16h 45m1 stop
£747Multiple Airlines
Find Deal
Tue, 10 Mar - Tue, 24 Mar
TAP AIR PORTUGAL Logo
21:55 - 22:55POA-LHR
21h 00m1 stop
TAP AIR PORTUGAL Logo
06:00 - 22:40LHR-POA
20h 40m1 stop
£754TAP AIR PORTUGAL
Find Deal
Thu, 9 Apr - Sat, 18 Apr
Air Canada Logo
17:55 - 07:10POA-LHR
34h 15m2 stops
Air Canada Logo
17:40 - 14:20LHR-POA
24h 40m2 stops
£771Air Canada
Find Deal
Sun, 1 Mar - Thu, 30 Apr
TAP AIR PORTUGAL Logo
00:45 - 21:35POA-LHR
17h 50m1 stop
TAP AIR PORTUGAL Logo
08:00 - 20:25LHR-POA
16h 25m1 stop
£774TAP AIR PORTUGAL
Find Deal
Thu, 12 Mar - Thu, 16 Apr
Air Canada Logo
14:05 - 06:30POA-LHR
37h 25m2 stops
Air Canada Logo
18:00 - 14:35LHR-POA
23h 35m2 stops
£779Air Canada
Find Deal
Thu, 19 Mar - Fri, 27 Mar

KLM flights from Porto Alegre to London

Our best KLM deals on Porto Alegre to London flight tickets
KLM
10 Mar
POA13:40Porto Alegre Salgado Filho
23h 25m
2 stops
LHR16:05London Heathrow
31 Mar
LHR06:30London Heathrow
22h 10m
2 stops
POA00:40Porto Alegre Salgado Filho
£744
Find similar
KLM
10 Mar
POA13:40Porto Alegre Salgado Filho
23h 25m
2 stops
LHR16:05London Heathrow
25 Mar
LHR06:30London Heathrow
20h 00m
2 stops
POA23:30Porto Alegre Salgado Filho
£746
Find similar
KLM
12 Mar
POA13:40Porto Alegre Salgado Filho
23h 55m
2 stops
LCY16:35London City
19 Mar
LCY07:45London City
18h 45m
2 stops
POA23:30Porto Alegre Salgado Filho
£763
Find similar

TAP AIR PORTUGAL flights from Porto Alegre to London

Our best TAP AIR PORTUGAL deals on Porto Alegre to London flight tickets
TAP AIR PORTUGAL
9 Apr
POA21:55Porto Alegre Salgado Filho
21h 00m
1 stop
LHR22:55London Heathrow
18 Apr
LHR06:00London Heathrow
20h 40m
1 stop
POA22:40Porto Alegre Salgado Filho
£754
Find similar
TAP AIR PORTUGAL
12 Mar
POA00:45Porto Alegre Salgado Filho
17h 50m
1 stop
LHR21:35London Heathrow
16 Apr
LHR08:00London Heathrow
16h 25m
1 stop
POA20:25Porto Alegre Salgado Filho
£774
Find similar
TAP AIR PORTUGAL
16 Apr
POA21:55Porto Alegre Salgado Filho
21h 00m
1 stop
LHR22:55London Heathrow
15 May
LHR19:50London Heathrow
30h 50m
1 stop
POA22:40Porto Alegre Salgado Filho
£782
Find similar

momondo Fare Finder

 
Customise your flight search to find flights from Porto Alegre to London 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 11 November 2025.
Use the filters below to find and compare flights from Porto Alegre to London that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Porto AlegreLondon

POA - LHR

POALHR

Porto Alegre Salgado Filho

Mon 16/3

12:20-14:05

1 stop22h 45m

London Heathrow

Mon 23/3

20:15-16:50

2 stops23h 35m

£654

Porto AlegreLondon

POA - LHR

POALHR

Porto Alegre Salgado Filho

Wed 11/3

20:10-14:05

1 stop14h 55m

London Heathrow

Wed 18/3

20:15-09:15

1 stop16h 00m

£655

Porto AlegreLondon

POA - LHR

POALHR

Porto Alegre Salgado Filho

Tue 10/3

13:40-16:05

2 stops23h 25m

London Heathrow

Tue 31/3

06:30-00:40

2 stops22h 10m

£744

Porto AlegreLondon

POA - LHR

POALHR

Porto Alegre Salgado Filho

Tue 10/3

13:40-16:05

2 stops23h 25m

London Heathrow

Wed 25/3

06:20-23:30

2 stops20h 10m

£745

Porto AlegreLondon

POA - LHR

POALHR

Porto Alegre Salgado Filho

Tue 10/3

13:40-16:05

2 stops23h 25m

London Heathrow

Wed 25/3

06:30-23:30

2 stops20h 00m

£746

Porto AlegreLondon

POA - STN

POASTN

Porto Alegre Salgado Filho

Tue 10/3

21:10-18:40

1 stop18h 30m

London Stansted

Tue 24/3

05:55-19:40

1 stop16h 45m

£747

Porto AlegreLondon

POA - LHR

POALHR

Porto Alegre Salgado Filho

Thu 9/4

21:55-22:55

1 stop21h 00m

London Heathrow

Sat 18/4

06:00-22:40

1 stop20h 40m

£754

Porto AlegreLondon

POA - LHR

POALHR

Porto Alegre Salgado Filho

Sun 1/3

17:55-07:10

2 stops34h 15m

London Heathrow

Thu 30/4

17:40-14:20

2 stops24h 40m

£771

Porto AlegreLondon

POA - LHR

POALHR

Porto Alegre Salgado Filho

Thu 12/3

00:45-21:35

1 stop17h 50m

London Heathrow

Thu 16/4

08:00-20:25

1 stop16h 25m

£774

Porto AlegreLondon

POA - LHR

POALHR

Porto Alegre Salgado Filho

Thu 19/3

14:05-06:30

2 stops37h 25m

London Heathrow

Fri 27/3

18:00-14:35

2 stops23h 35m

£779

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 London from

How to get the cheapest flight ticket from Porto Alegre to London

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 Porto Alegre and London?

What is the cheapest month to fly to London?

The cheapest month to fly to London from Porto Alegre is in February. Flight prices, which tend to average around £654, are often lower during this time because this is during the off-season. The month of March is another great option to travel to London, with average flight prices from Porto Alegre averaging around £663.

What is the cheapest day to depart on your flight to London?

Our data shows that Friday is the least expensive day to fly to London. Tickets to fly out on this day can be as low as £755. When flying out on a Thursday, the most expensive travel day of the week, you can expect to see flight prices from Porto Alegre to London for around £912.

What is the cheapest time of day to depart on your flight to London?

The cheapest time of day to fly to London is in the afternoon when flights can be purchased for as low as £805. Flights in the evening are often more expensive, with an average ticket price of £841.

How far in advance should I book a flight to London?

You are more likely to see cheaper flights to London from Porto Alegre when booking weeks ahead of your departure date. In general, you can expect to find flights to London for around £846 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London from Porto Alegre for as low as £655 on momondo.

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

You could potentially save up to 6% on your flight if you consider stops on a Porto Alegre to London flight.

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

As of November 2025, prices for Porto Alegre to London flights are approximately 19% more expensive when compared to flights at the same time last year.

When to book flights from Porto Alegre to London

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

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

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

Direct flights

None
There are no direct flights from Porto Alegre to London. There are no popular flight routes from Porto Alegre to London.
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  • How far is Porto Alegre Salgado Filho to London by plane?

    The straight-line distance from Porto Alegre Salgado Filho to London is 6424.7 mi. Flights usually cover this in 14h 55m, depending on flying conditions and air traffic around both airports.

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

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

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

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

    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 Porto Alegre Salgado Filho Airport to London.

  • What documentation or ID do you need to fly to London?

    The travel and health documents required for your trip to London can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at London. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

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

Best airlines flying from Porto Alegre to London

Compare and see reviews for airlines that fly from Porto Alegre to London with momondo
Airline
Rating
Free Cancellation
Price
LATAM AirlinesPriceFrom £777Free CancellationRating
7.5
1,872 reviews
Search LATAM Airlines flights

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Why use momondo?

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

Finding the right flight to London from Porto Alegre is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to London quick and easy, saving you time and money.

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

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

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

momondo provides multiple filters to help you find the best flight to London from Porto Alegre. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Of course. momondo tracks the price of Porto Alegre to London flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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Find better results for your trip to the United Kingdom

Fly into one of these airports located in London

Airports listed have a maximum distance of 35.6 mi from London
London City Airport
London Gatwick Airport
London Heathrow Airport
London Luton Airport
London Southend Airport
London Stansted Airport