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Cheap flights from London to Porto Alegre from £370

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 26/2. Fares are subject to change and may not be available on all flights or dates of travel.
LON — POA
8 Feb — 15 Feb1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from London to Porto Alegre

Discover tips and strategies to find the most affordable flight options for your journey from London (LON) to Porto Alegre (POA). 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 9 January 2026.

Round-trip from

£780

One-way from

£370

Popular in

July

Cheapest in

May

Average price

£832
LATAM Airlines
  • LATAM Airlines
  • 2/3-19/3
  • 3 total stops
  • 38h 35m total
  • London to Porto Alegre
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26/2
  • 26/2
  • 2 total stops
  • 27h 00m total
  • London to Porto Alegre
Search Deals
Highest demand for flights based on searches. 16% potential increase in price (£146 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£23 potential savings vs. average return price).
Search Deals
Average for round-trip flights in January 2026
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Find flight deals from London to Porto Alegre

Enter your travel dates to find the best prices.

Cheapest flights from London to Porto Alegre
Explore the most affordable flight options available from London to Porto Alegre. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 9 January 2026.

Mon 2/306:15LHR - POA
2 stops21h 25mLATAM Airlines
Thu 19/317:55POA - LHR
1 stop17h 10mLATAM Airlines
Deal found 6/1£780
Mon 13/420:20LGW - POA
2 stops31h 55mMultiple Airlines
Mon 11/515:15POA - LGW
2 stops21h 10mMultiple Airlines
Deal found 8/1£783
Thu 26/206:30LHR - POA
2 stops20h 10mKLM
Sun 29/318:30POA - LHR
2 stops20h 55mKLM
Deal found 7/1£785
Mon 13/406:00LHR - POA
2 stops22h 15mMultiple Airlines
Thu 7/510:35POA - LHR
2 stops25h 00mMultiple Airlines
Deal found 7/1£786
Mon 27/416:25LGW - POA
1 stop33h 20mTAP AIR PORTUGAL
Tue 26/500:15POA - LGW
1 stop29h 30mTAP AIR PORTUGAL
Deal found 7/1£787
Mon 27/421:20LHR - POA
1 stop15h 30mLATAM Airlines
Mon 25/520:05POA - LHR
1 stop15h 00mLATAM Airlines
Deal found 7/1£787
Tue 24/220:15LHR - POA
1 stop15h 30mLATAM Airlines
Sun 1/312:45POA - LHR
1 stop22h 20mLATAM Airlines
Deal found 8/1£788
Sat 18/417:25LGW - POA
2 stops31h 40mMultiple Airlines
Mon 18/521:55POA - LGW
2 stops31h 05mMultiple Airlines
Deal found 7/1£790
Thu 23/408:00LHR - POA
1 stop16h 25mTAP AIR PORTUGAL
Tue 19/500:15POA - LHR
1 stop17h 45mTAP AIR PORTUGAL
Deal found 7/1£791
Mon 13/406:55LHR - POA
2 stops20h 30mLufthansa
Wed 13/514:20POA - LHR
2 stops22h 45mLufthansa
Deal found 7/1£791
Mon 20/406:05LGW - POA
2 stops22h 10mMultiple Airlines
Mon 18/514:10POA - LGW
3 stops22h 15mMultiple Airlines
Deal found 7/1£795
Mon 13/417:25LGW - POA
2 stops19h 40mAir Europa
Thu 7/506:00POA - LGW
2 stops30h 25mAir Europa
Deal found 7/1£797

Cheapflights 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, Cheapflights users made 858,174 searches. Data last updated 9 January 2026.
Use the filters below to find and compare flights from London to Porto Alegre that are best for you.

Fly from

London

Fly to

Porto Alegre

Route

Depart

Return

Price

LondonPorto Alegre

LGW - POA

LGWPOA

London Gatwick

Mon 13/4

20:20-00:15

2 stops31h 55m

Porto Alegre Salgado Filho

Mon 11/5

15:15-16:25

2 stops21h 10m

£783

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

£785

LondonPorto Alegre

LGW - POA

LGWPOA

London Gatwick

Thu 30/4

09:20-21:05

3 stops39h 45m

Porto Alegre Salgado Filho

Wed 27/5

10:30-09:45

2 stops19h 15m

£806

LondonPorto Alegre

LHR - POA

LHRPOA

London Heathrow

Tue 24/2

20:15-23:00

2 stops29h 45m

Porto Alegre Salgado Filho

Sat 28/2

04:40-14:05

1 stop30h 25m

£806

LondonPorto Alegre

LHR - POA

LHRPOA

London Heathrow

Mon 13/4

06:15-02:10

2 stops23h 55m

Porto Alegre Salgado Filho

Mon 11/5

12:35-19:35

2 stops27h 00m

£814

LondonPorto Alegre

LGW - POA

LGWPOA

London Gatwick

Mon 2/3

17:25-10:55

2 stops20h 30m

Porto Alegre Salgado Filho

Thu 19/3

10:45-09:00

2 stops19h 15m

£840

LondonPorto Alegre

LGW - POA

LGWPOA

London Gatwick

Thu 11/6

17:35-23:55

2 stops58h 20m

Porto Alegre Salgado Filho

Thu 25/6

18:25-09:55

2 stops59h 30m

£842

LondonPorto Alegre

LCY - POA

LCYPOA

London City

Mon 18/5

18:30-09:15

2 stops18h 45m

Porto Alegre Salgado Filho

Mon 15/6

14:20-12:35

2 stops18h 15m

£845

LondonPorto Alegre

LGW - POA

LGWPOA

London Gatwick

Wed 17/6

10:50-09:15

2 stops26h 25m

Porto Alegre Salgado Filho

Fri 3/7

18:25-13:10

2 stops62h 45m

£852

LondonPorto Alegre

LGW - POA

LGWPOA

London Gatwick

Mon 22/6

17:35-23:55

2 stops58h 20m

Porto Alegre Salgado Filho

Sun 28/6

11:15-16:40

2 stops25h 25m

£852

Flights are sorted by cheapest return flights first.

Deals found on 8/1

Showing 1-10 of 60 results
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Best time to book a flight from London to Porto Alegre

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

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

Use this chart to determine the optimal time to book a return flight from London to Porto Alegre. Price data was last updated on 2 January 2026.

The best time to book flights from London to Porto Alegre is 80 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.

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

Currently, October is the cheapest month in which you can book a flight from London to Porto Alegre (average of £663). Flying from London to Porto Alegre in August is currently the most expensive (average of £968). 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 London to Porto Alegre?

What’s the top stopover airport for flights from London to Porto Alegre?

Share of one-stop return flights from London to Porto Alegre chosen by Cheapflights users in the past 12 months, using the same stopover each way.

Sao Paulo (GRU) – chosen by Cheapflights users on 68% of one-stop itineraries from London to Porto Alegre on Cheapflights.

What’s the cheapest stopover airport for flights from London to Porto Alegre?

Average return fare for one-stop flights from London to Porto Alegre, chosen by Cheapflights users in the past 12 months, with the same stopover each way.

Sao Paulo (GRU) is the most affordable one-stop option, with an average return flight price of £1,022.

What’s the fastest stopover option from London to Porto Alegre?

Shortest average travel time for one-stop one-way flights from London to Porto Alegre, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by stopover airport.

Flights via Sao Paulo (GRU) have the shortest average one-way travel time for one-stop routes: 16h 04m.

Which airport typically offers the quickest stopover for flights from London to Porto Alegre?

Average stopover duration for one-stop one-way flights from London to Porto Alegre, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Flights via Sao Paulo (GRU) offer the fastest connection on this route, with an average stopover time of 2h 44m.

Reviews of airlines servicing Porto Alegre

Get insights into the airlines that provide service to Porto Alegre. 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 Porto Alegre. Reviews last updated 9 January 2026.
Get a feel of what it's like to fly with KLM, LATAM Airlines, andVirgin Atlantic from London to Porto Alegre by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.7
Good
1,434 reviews
Check prices

Boarding

7.8

Overall

7.7

Crew

8.4

Entertainment

7.1

Comfort

7.6

Food

7.2

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle
KLM
7.7
Good
1,434 reviews
KLM
7.7
Good
1,434 reviews
Check prices

Boarding

7.8

Overall

7.7

Crew

8.4

Entertainment

7.1

Comfort

7.6

Food

7.2

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle
LATAM Airlines
7.5
Good
1,898 reviews
KLM
7.7
Good
1,434 reviews
Check prices

Boarding

7.8

Overall

7.7

Crew

8.4

Entertainment

7.1

Comfort

7.6

Food

7.2

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle
Virgin Atlantic
7.5
Good
678 reviews
KLM
7.7
Good
1,434 reviews
Check prices

Boarding

7.8

Overall

7.7

Crew

8.4

Entertainment

7.1

Comfort

7.6

Food

7.2

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle
TAP AIR PORTUGAL
7.1
Good
2,111 reviews
KLM
7.7
Good
1,434 reviews
Check prices

Boarding

7.8

Overall

7.7

Crew

8.4

Entertainment

7.1

Comfort

7.6

Food

7.2

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle
Lufthansa
6.8
Okay
7,696 reviews
KLM
7.7
Good
1,434 reviews
Check prices

Boarding

7.8

Overall

7.7

Crew

8.4

Entertainment

7.1

Comfort

7.6

Food

7.2

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle

Related info for your journey

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

    If you book a flight to Porto Alegre from London, you will be flying to Salgado Filho, which is the city’s only airport. Porto Alegre Salgado Filho (POA) is located 4.0 mi from the center of Porto Alegre. There are 0 flights from London to Salgado Filho per day from 4 different airlines.

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

    There are many flights that can get you from London to Porto Alegre in 18h 20m. Fly via LATAM Airlines, Air Europa, or Turkish Airlines to get the fastest option. The distance between London and Porto Alegre is about 6410 mi. Both multi-stop and direct flights can be found to your destination and back.

  • What are the cheapest airlines flying from London to Porto Alegre round-trip?

    Air France, at £644, was found to be the cheapest airline from London to Porto Alegre.Alternate airlines flying return to your destination include TAP AIR PORTUGAL and LATAM Airlines. These flights start at 33% lower than the current average price 3 months from now.

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

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

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

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

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

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

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

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

    Currently, October is the cheapest month in which you can book a flight from London to Porto Alegre (average of £663). Flying from London to Porto Alegre in August is currently the most expensive (average of £968). 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 London to Porto Alegre

See prices for flight routes from nearby airports that may be better suited for you.
Heathrow to Porto Alegre flights
Gatwick to Porto Alegre flights
Manchester to Porto Alegre flights
Birmingham to Porto Alegre flights
Edinburgh to Porto Alegre flights

Top 4 airlines flying from London to Porto Alegre

Discover the top 4 airlines that operate flights from London to Porto Alegre. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 9 January 2026.
AirlineCheapestAverageFlexibilityOn-time
Air FranceCheapest£644Average£702FlexibilityNo cancel feeOn-time77%
Search Air France flights
TAP AIR PORTUGALCheapest£694Average£925FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
LATAM AirlinesCheapest£704Average£996FlexibilityNo cancel feeOn-time81%
Search LATAM Airlines flights
Virgin AtlanticCheapest£1,121Average£1,576FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from London to Porto Alegre?

Cheapflights makes it easy to find London to Porto Alegre flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

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

Millions of users choose and trust Cheapflights to book the best flight deals from London to Porto Alegre for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

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

Yes, we can. To see specific flights from London to Porto Alegre with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights from London to Porto Alegre become cheaper?

Yes, Cheapflights offers price alerts on London to Porto Alegre flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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