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Cheap flights from Porto Alegre to London from £428

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 12/9. Fares are subject to change and may not be available on all flights or dates of travel.
POA — LON
21 Aug — 28 Aug1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Porto Alegre to London

Enter your travel dates to find the best prices.

Cheapest flights from Porto Alegre to London
Explore the most affordable flight options available from Porto Alegre to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 22 July 2026.

Fri 13/1119:50
POA
-
LHR
1 stop15h 15m
LATAM Airlines
Sun 29/1120:15
LHR
-
POA
1 stop15h 15m
LATAM Airlines
Deal found 22/7£652
Wed 18/1113:00
POA
-
LHR
1 stop22h 05m
LATAM Airlines
Mon 23/1120:15
LHR
-
POA
1 stop25h 50m
LATAM Airlines
Deal found 22/7£662
Thu 12/1100:45
POA
-
LHR
1 stop15h 10m
TAP AIR PORTUGAL
Mon 23/1118:30
LHR
-
POA
1 stop28h 10m
TAP AIR PORTUGAL
Deal found 17/7£671
Mon 3/801:00
POA
-
LGW
1 stop28h 45m
TAP AIR PORTUGAL
Mon 24/816:25
LGW
-
POA
1 stop33h 20m
TAP AIR PORTUGAL
Deal found 18/7£675
Thu 12/1100:45
POA
-
LGW
1 stop36h 00m
TAP AIR PORTUGAL
Mon 23/1116:35
LGW
-
POA
1 stop30h 05m
TAP AIR PORTUGAL
Deal found 17/7£676
Tue 4/820:05
POA
-
LHR
1 stop15h 00m
LATAM Airlines
Mon 24/821:20
LHR
-
POA
1 stop16h 00m
LATAM Airlines
Deal found 18/7£721
Thu 6/814:20
POA
-
LHR
1 stop20h 45m
LATAM Airlines
Thu 27/821:20
LHR
-
POA
1 stop17h 55m
LATAM Airlines
Deal found 18/7£727
Tue 11/820:05
POA
-
LCY
2 stops17h 50m
Multiple Airlines
Thu 3/909:15
LCY
-
POA
2 stops38h 05m
Multiple Airlines
Deal found 19/7£733
Fri 13/1111:10
POA
-
LHR
2 stops23h 55m
LATAM Airlines
Mon 23/1120:15
LHR
-
POA
1 stop19h 00m
LATAM Airlines
Deal found 17/7£754
Tue 3/1121:10
POA
-
LGW
1 stop15h 35m
TAP AIR PORTUGAL
Wed 11/1116:35
LGW
-
POA
1 stop29h 45m
TAP AIR PORTUGAL
Deal found 20/7£805
Fri 7/811:30
POA
-
LGW
2 stops24h 30m
Air France
Sat 22/817:00
LGW
-
POA
2 stops35h 45m
Air France
Deal found 21/7£825
Wed 12/811:25
POA
-
LGW
2 stops24h 35m
Air France
Thu 20/817:00
LGW
-
POA
2 stops31h 30m
Air France
Deal found 21/7£825

Find flight deals from Porto Alegre to London

Discover tips and strategies to find the most affordable flight options for your journey from Porto Alegre (POA) to London (LON). 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 22 July 2026.

Round-trip from

£652

One-way from

£428

Popular in

July

Cheapest in

February

Average price

£1,072
LATAM Airlines
  • LATAM Airlines
  • 13/11-29/11
  • 2 total stops
  • 30h 30m total
  • Porto Alegre to London
Search Deals
12/9
  • 12/9
  • 3 total stops
  • 59h 50m total
  • Porto Alegre to London
Search Deals
Highest demand for flights based on searches. 8% potential increase in price (£64 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£14 potential savings vs. average return price).
Search Deals
Average for round-trip flights in July 2026
Search Deals

Cheapflights 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, Cheapflights users made 858,174 searches. Data last updated 22 July 2026.
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

Cheapest return flight

Porto AlegreLondon

POA - LHR

POALHR

Porto Alegre Salgado Filho

Thu 12/11

00:45-21:35

1 stop17h 50m

London Heathrow

Mon 23/11

18:30-19:40

1 stop28h 10m

£674

Porto AlegreLondon

POA - LGW

POALGW

Porto Alegre Salgado Filho

Thu 12/11

00:45-15:45

1 stop36h 00m

London Gatwick

Mon 23/11

16:35-19:40

1 stop30h 05m

£680

Porto AlegreLondon

POA - LHR

POALHR

Porto Alegre Salgado Filho

Sun 2/8

18:15-16:15

2 stops18h 00m

London Heathrow

Mon 17/8

08:55-23:40

2 stops18h 45m

£813

Porto AlegreLondon

POA - LHR

POALHR

Porto Alegre Salgado Filho

Sat 1/8

06:00-18:35

2 stops32h 35m

London Heathrow

Sat 29/8

06:15-23:40

2 stops21h 25m

£816

Porto AlegreLondon

POA - LCY

POALCY

Porto Alegre Salgado Filho

Sun 2/8

18:45-17:20

2 stops18h 35m

London City

Fri 21/8

10:00-00:40

2 stops18h 40m

£839

Porto AlegreLondon

POA - LHR

POALHR

Porto Alegre Salgado Filho

Sun 2/8

18:45-17:35

2 stops18h 50m

London Heathrow

Mon 17/8

19:45-20:35

2 stops28h 50m

£845

Porto AlegreLondon

POA - LGW

POALGW

Porto Alegre Salgado Filho

Fri 13/11

06:00-09:00

2 stops24h 00m

London Gatwick

Sun 29/11

17:25-16:20

2 stops25h 55m

£951

Porto AlegreLondon

POA - LGW

POALGW

Porto Alegre Salgado Filho

Fri 13/11

06:00-09:00

2 stops24h 00m

London Gatwick

Mon 23/11

17:25-16:20

2 stops25h 55m

£973

Porto AlegreLondon

POA - LHR

POALHR

Porto Alegre Salgado Filho

Sat 17/10

01:40-10:20

1 stop28h 40m

London Heathrow

Tue 3/11

06:00-19:40

1 stop16h 40m

£976

Porto AlegreLondon

POA - LHR

POALHR

Porto Alegre Salgado Filho

Sat 19/9

18:40-17:50

2 stops19h 10m

London Heathrow

Sun 4/10

06:30-23:55

2 stops21h 25m

£996

Flights are sorted by cheapest return flights first.

Deals found on 19/7

Showing 1-10 of 60 resultsSorted by cheapest first
1
2
3
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6

Best time to book a flight from Porto Alegre to London

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

What is the cheapest month to book a flight from Porto Alegre to London?

Currently, February is the cheapest month in which you can book a flight from Porto Alegre to London (average of £788). Flying from Porto Alegre to London in July is currently the most expensive (average of £1,088). 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 Porto Alegre to London?

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

The best time to book flights from Porto Alegre to London 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.

Reviews of airlines servicing London

Get insights into the airlines that provide service to London. 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 London. Reviews last updated 22 July 2026.
See what other customers who have flown with LATAM Airlines and TAP AIR PORTUGAL from Porto Alegre to London have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
LATAM Airlines
7.5
Good
1,963 reviews
Check prices

Comfort

7.3

Overall

7.5

Boarding

7.5

Food

6.7

Crew

8.0

Entertainment

7.0

Reviews

1 / 20
2.0
Mediocre

wizard,Jun 2026

GRU - DOH

It was a terrible experience, when I purchased the ticket, ot stated that I could have one carry on bag and one checked baggage, when I got to the airport they demanded a fee for the checked luggage of $328.00 or 1,705.00 bra real, of which I did not have and had to have a family member deposit it to me in order to pay this fee that was meant to be included, it caused a lot of stress for me and my family and I am very unhappy with this out right trickery. I feel something should be done to prevent other travelers from experiencing what I did, it is not fair.
LATAM Airlines
7.5
Good
1,963 reviews
LATAM Airlines
7.5
Good
1,963 reviews
Check prices

Comfort

7.3

Overall

7.5

Boarding

7.5

Food

6.7

Crew

8.0

Entertainment

7.0

Reviews

1 / 20
2.0
Mediocre

wizard,Jun 2026

GRU - DOH

It was a terrible experience, when I purchased the ticket, ot stated that I could have one carry on bag and one checked baggage, when I got to the airport they demanded a fee for the checked luggage of $328.00 or 1,705.00 bra real, of which I did not have and had to have a family member deposit it to me in order to pay this fee that was meant to be included, it caused a lot of stress for me and my family and I am very unhappy with this out right trickery. I feel something should be done to prevent other travelers from experiencing what I did, it is not fair.
TAP AIR PORTUGAL
7.2
Good
2,342 reviews
LATAM Airlines
7.5
Good
1,963 reviews
Check prices

Comfort

7.3

Overall

7.5

Boarding

7.5

Food

6.7

Crew

8.0

Entertainment

7.0

Reviews

1 / 20
2.0
Mediocre

wizard,Jun 2026

GRU - DOH

It was a terrible experience, when I purchased the ticket, ot stated that I could have one carry on bag and one checked baggage, when I got to the airport they demanded a fee for the checked luggage of $328.00 or 1,705.00 bra real, of which I did not have and had to have a family member deposit it to me in order to pay this fee that was meant to be included, it caused a lot of stress for me and my family and I am very unhappy with this out right trickery. I feel something should be done to prevent other travelers from experiencing what I did, it is not fair.

Related info for your journey

Find useful and relevant information for your journey from Porto Alegre to London. 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 from for flights from Porto Alegre to London?

    Located just 4.0 mi from the city center, Porto Alegre Salgado Filho is the airport most travelers will use when flying to London from Porto Alegre. Booking flights from Salgado Filho (POA) to London should be relatively easy as there are 0 daily outbound flights to London from 0 different airlines.

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

    Departing from Porto Alegre to London will take you 17h 50m. There are 6410 mi between Porto Alegre and London. Both multi-stop and direct flights can be found to your destination and back.

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

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

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

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

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

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

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

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

    Currently, February is the cheapest month in which you can book a flight from Porto Alegre to London (average of £788). Flying from Porto Alegre to London in July is currently the most expensive (average of £1,088). 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

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Alternative routes for Porto Alegre to London

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Why should you use Cheapflights to find cheap flight tickets from Porto Alegre to London?

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

Users can book flights with no change fees policies with our dedicated filters. Book flights from Porto Alegre to London flexibly with Cheapflights today.

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Yes! Start tracking prices for Porto Alegre to London flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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