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Cheap flights from London to Porto Alegre from £636

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 24/1. Fares are subject to change and may not be available on all flights or dates of travel.
LON — POA
27 Dec — 3 Jan1
1 adult
1 adult, Economy, 0 bags

Cheapflights Tip: The best prices from London to Porto Alegre Salgado Filho are usually found in May or February, booked 81 days in advance, depart on a Thursday or Tuesday and return on a Friday

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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 27 November 2025.

Thu 25/1216:30LHR - POA
2 stops33h 35mMultiple Airlines
Tue 20/120:10POA - LHR
1 stop14h 55mMultiple Airlines
Deal found 26/11£1,108
Thu 25/1216:30LHR - POA
2 stops33h 35mMultiple Airlines
Wed 21/115:25POA - LHR
1 stop19h 40mMultiple Airlines
Deal found 26/11£1,129
Fri 26/1219:55LHR - POA
2 stops31h 00mMultiple Airlines
Tue 20/120:10POA - LHR
1 stop14h 55mMultiple Airlines
Deal found 26/11£1,135
Fri 26/1219:55LHR - POA
2 stops31h 00mMultiple Airlines
Wed 21/115:25POA - LHR
1 stop19h 40mMultiple Airlines
Deal found 26/11£1,155
Sat 27/1217:25LGW - POA
2 stops26h 05mAir Europa
Wed 21/106:05POA - LGW
2 stops23h 55mAir Europa
Deal found 26/11£1,158
Wed 24/1216:35LGW - POA
1 stop29h 45mTAP AIR PORTUGAL
Mon 19/111:00POA - LGW
2 stops25h 45mTAP AIR PORTUGAL
Deal found 26/11£1,159
Thu 25/1210:10LGW - POA
2 stops31h 35mTAP AIR PORTUGAL
Sun 18/111:00POA - LGW
2 stops25h 45mTAP AIR PORTUGAL
Deal found 26/11£1,167
Wed 24/1220:15LHR - POA
1 stop23h 50mLATAM Airlines
Sat 17/104:40POA - LHR
1 stop30h 25mLATAM Airlines
Deal found 26/11£1,182
Sat 27/1217:25LGW - POA
2 stops26h 05mAir Europa
Tue 20/109:35POA - LGW
2 stops27h 50mAir Europa
Deal found 26/11£1,188
Wed 24/1217:25LHR - POA
2 stops18h 50mMultiple Airlines
Sun 18/112:45POA - LHR
2 stops26h 35mMultiple Airlines
Deal found 26/11£1,201
Wed 24/1217:25LGW - POA
2 stops27h 25mAir Europa
Wed 21/106:05POA - LGW
2 stops23h 55mAir Europa
Deal found 26/11£1,203
Wed 24/1218:30LHR - POA
1 stop27h 50mTAP AIR PORTUGAL
Sun 18/111:00POA - LHR
2 stops22h 40mTAP AIR PORTUGAL
Deal found 26/11£1,203

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 27 November 2025.

Round-trip from

£818

One-way from

£636

Popular in

July

Cheapest in

May

Average price

£1,106
Air Europa
  • Air Europa
  • 5/3-20/3
  • 4 total stops
  • 46h 55m total
  • London to Porto Alegre
Search Deals
Air Canada
  • Air Canada
  • 24/1
  • 2 total stops
  • 33h 30m total
  • London to Porto Alegre
Search Deals
Highest demand for flights based on searches. 15% potential increase in price (£138 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£24 potential savings vs. average return price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

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 27 November 2025.
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

Tue 3/3

17:05-10:55

2 stops44h 50m

Porto Alegre Salgado Filho

Wed 18/3

17:55-09:20

2 stops60h 25m

£823

LondonPorto Alegre

LGW - POA

LGWPOA

London Gatwick

Mon 2/3

10:00-16:30

2 stops33h 30m

Porto Alegre Salgado Filho

Thu 19/3

10:30-09:00

2 stops19h 30m

£833

LondonPorto Alegre

LHR - POA

LHRPOA

London Heathrow

Tue 3/2

22:35-22:55

2 stops27h 20m

Porto Alegre Salgado Filho

Tue 10/2

11:40-16:10

2 stops25h 30m

£841

LondonPorto Alegre

LGW - POA

LGWPOA

London Gatwick

Sun 8/3

17:25-11:00

2 stops20h 35m

Porto Alegre Salgado Filho

Sat 21/3

06:10-16:25

2 stops31h 15m

£848

LondonPorto Alegre

LGW - POA

LGWPOA

London Gatwick

Sat 7/3

10:00-15:25

2 stops32h 25m

Porto Alegre Salgado Filho

Wed 18/3

10:30-09:00

2 stops19h 30m

£848

LondonPorto Alegre

LGW - POA

LGWPOA

London Gatwick

Wed 4/3

17:25-16:30

2 stops26h 05m

Porto Alegre Salgado Filho

Sat 21/3

05:30-16:25

2 stops31h 55m

£848

LondonPorto Alegre

LCY - POA

LCYPOA

London City

Thu 5/3

09:40-11:35

2 stops28h 55m

Porto Alegre Salgado Filho

Mon 9/3

14:55-17:40

2 stops23h 45m

£849

LondonPorto Alegre

LHR - POA

LHRPOA

London Heathrow

Sun 18/1

22:35-00:45

2 stops29h 10m

Porto Alegre Salgado Filho

Wed 18/2

11:40-16:10

2 stops25h 30m

£857

LondonPorto Alegre

LHR - POA

LHRPOA

London Heathrow

Fri 23/1

20:15-17:05

1 stop23h 50m

Porto Alegre Salgado Filho

Wed 4/2

04:40-14:05

1 stop30h 25m

£862

LondonPorto Alegre

LGW - POA

LGWPOA

London Gatwick

Sat 7/3

10:00-10:35

2 stops27h 35m

Porto Alegre Salgado Filho

Mon 23/3

06:00-09:00

2 stops24h 00m

£864

Flights are sorted by cheapest return flights first.

Deals found on 26/11

Showing 1-10 of 48 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 21 November 2025.

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, April is the cheapest month in which you can book a flight from London to Porto Alegre (average of £596). Flying from London to Porto Alegre in August is currently the most expensive (average of £933). 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.

What is the cheapest time of day to fly from LON to POA?

Find hourly flight availability from London to Porto Alegre. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 27 November 2025.

It’s optimal to fly from London to Porto Alegre at midday. By choosing this option you can save up to 24% on the cost of your flight, compared to a flight in the evening.

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 70% 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 £867.

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 00m.

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 52m.

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 27 November 2025.
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
1,423 reviews
Check prices

Food

7.2

Boarding

7.8

Comfort

7.6

Crew

8.4

Entertainment

7.1

Overall

7.7

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.
KLM
7.7
Good
1,423 reviews
KLM
7.7
Good
1,423 reviews
Check prices

Food

7.2

Boarding

7.8

Comfort

7.6

Crew

8.4

Entertainment

7.1

Overall

7.7

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.
LATAM Airlines
7.5
Good
1,886 reviews
KLM
7.7
Good
1,423 reviews
Check prices

Food

7.2

Boarding

7.8

Comfort

7.6

Crew

8.4

Entertainment

7.1

Overall

7.7

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.
Virgin Atlantic
7.5
Good
675 reviews
KLM
7.7
Good
1,423 reviews
Check prices

Food

7.2

Boarding

7.8

Comfort

7.6

Crew

8.4

Entertainment

7.1

Overall

7.7

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.
TAP AIR PORTUGAL
7.1
Good
2,075 reviews
KLM
7.7
Good
1,423 reviews
Check prices

Food

7.2

Boarding

7.8

Comfort

7.6

Crew

8.4

Entertainment

7.1

Overall

7.7

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.
Lufthansa
6.8
Okay
7,594 reviews
KLM
7.7
Good
1,423 reviews
Check prices

Food

7.2

Boarding

7.8

Comfort

7.6

Crew

8.4

Entertainment

7.1

Overall

7.7

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.

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 28h 55m. Fly via Turkish Airlines, Air Europa, or Lufthansa to get the fastest option. The distance between London and Porto Alegre is about 6426 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?

    TAP AIR PORTUGAL, at £643, was found to be the cheapest airline from London to Porto Alegre.Alternate airlines flying return to your destination include Air France and LATAM Airlines. These flights start at 34% lower than the current average price 3 months from now.

  • What are the cheapest airlines to fly from London to Porto Alegre one-way?

    The cheapet airlines for a one-way flight from London to Porto Alegre are Air Canada (£636), LATAM Airlines (£679), and TAP AIR PORTUGAL (£739).

  • 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 City - Porto Alegre Salgado Filho or London Gatwick - 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, April is the cheapest month in which you can book a flight from London to Porto Alegre (average of £596). Flying from London to Porto Alegre in August is currently the most expensive (average of £933). 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 27 November 2025.
AirlineCheapestAverageFlexibilityOn-time
TAP AIR PORTUGALCheapest£643Average£940FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
Air FranceCheapest£656Average£715FlexibilityNo cancel feeOn-time77%
Search Air France flights
LATAM AirlinesCheapest£717Average£979FlexibilityNo cancel feeOn-time81%
Search LATAM Airlines flights
Virgin AtlanticCheapest£954Average£1,571FlexibilityNo 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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