Find flights
When to book
Airlines
FAQs

Cheap flights from London to Porto Alegre from £482

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 2/12. Fares are subject to change and may not be available on all flights or dates of travel.
LON — POA
20 Dec — 27 Dec1
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

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 20 November 2025.

Sat 20/1206:00LHR - POA
1 stop16h 40mTAP AIR PORTUGAL
Mon 5/118:10POA - LHR
2 stops20h 20mTAP AIR PORTUGAL
Deal found 19/11£902
Wed 19/1116:00LGW - POA
2 stops30h 20mMultiple Airlines
Wed 26/1106:40POA - LGW
2 stops24h 10mMultiple Airlines
Deal found 18/11£907
Wed 10/1209:00LHR - POA
2 stops26h 15mMultiple Airlines
Wed 24/1209:20POA - LHR
2 stops30h 55mMultiple Airlines
Deal found 19/11£910
Wed 19/1120:15LHR - POA
1 stop26h 30mLATAM Airlines
Wed 26/1106:40POA - LHR
1 stop28h 25mLATAM Airlines
Deal found 18/11£927
Fri 19/1217:25LGW - POA
2 stops25h 15mAir Europa
Sat 10/111:15POA - LGW
2 stops18h 45mAir Europa
Deal found 19/11£929
Tue 2/1208:25LCY - POA
2 stops51h 10mITA Airways
Tue 3/214:05POA - LCY
2 stops23h 05mITA Airways
Deal found 17/11£931
Wed 19/1118:50LHR - POA
2 stops27h 30mMultiple Airlines
Wed 26/1114:10POA - LHR
1 stop20h 55mMultiple Airlines
Deal found 18/11£932
Mon 22/1218:30LHR - POA
2 stops21h 40mTAP AIR PORTUGAL
Sat 10/121:10POA - LHR
1 stop15h 20mTAP AIR PORTUGAL
Deal found 19/11£988
Wed 17/1216:45LCY - POA
2 stops33h 30mITA Airways
Sat 10/111:00POA - LCY
2 stops26h 10mITA Airways
Deal found 19/11£994
Fri 26/1206:00LHR - POA
2 stops21h 20mTAP AIR PORTUGAL
Fri 9/111:00POA - LHR
2 stops21h 25mTAP AIR PORTUGAL
Deal found 19/11£1,015
Tue 2/1219:40LHR - POA
2 stops20h 35mLATAM Airlines
Tue 5/515:50POA - LHR
2 stops19h 15mLATAM Airlines
Deal found 18/11£1,016
Wed 17/1216:35LGW - POA
2 stops44h 35mTAP AIR PORTUGAL
Thu 8/100:45POA - LGW
1 stop36h 00mTAP AIR PORTUGAL
Deal found 19/11£1,017

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 20 November 2025.

Round-trip from

£860

One-way from

£482

Popular in

July

Cheapest in

May

Average price

£1,114
2/3-19/3
  • 2/3-19/3
  • 4 total stops
  • 50h 40m total
  • London to Porto Alegre
Search Deals
2/12
  • 2/12
  • 3 total stops
  • 40h 05m total
  • London to Porto Alegre
Search Deals
Highest demand for flights based on searches. 15% potential increase in price (£140 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 20 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

LHR - POA

LHRPOA

London Heathrow

Mon 2/3

11:30-10:55

2 stops26h 25m

Porto Alegre Salgado Filho

Thu 19/3

11:40-14:55

2 stops24h 15m

£860

LondonPorto Alegre

LGW - POA

LGWPOA

London Gatwick

Tue 17/2

10:00-11:00

2 stops28h 00m

Porto Alegre Salgado Filho

Fri 6/3

10:30-09:00

2 stops19h 30m

£874

LondonPorto Alegre

LGW - POA

LGWPOA

London Gatwick

Thu 19/2

17:25-18:20

2 stops27h 55m

Porto Alegre Salgado Filho

Tue 3/3

09:45-09:00

2 stops20h 15m

£874

LondonPorto Alegre

LGW - POA

LGWPOA

London Gatwick

Thu 19/2

17:25-20:05

2 stops29h 40m

Porto Alegre Salgado Filho

Fri 6/3

10:30-09:00

2 stops19h 30m

£874

LondonPorto Alegre

LGW - POA

LGWPOA

London Gatwick

Tue 17/2

17:25-11:00

2 stops20h 35m

Porto Alegre Salgado Filho

Tue 3/3

09:45-16:25

2 stops27h 40m

£874

LondonPorto Alegre

LGW - POA

LGWPOA

London Gatwick

Thu 19/2

17:25-18:20

2 stops27h 55m

Porto Alegre Salgado Filho

Sat 7/3

10:40-09:00

2 stops19h 20m

£938

LondonPorto Alegre

LCY - POA

LCYPOA

London City

Tue 3/2

08:40-11:00

2 stops29h 20m

Porto Alegre Salgado Filho

Tue 10/2

13:40-16:35

2 stops23h 55m

£968

LondonPorto Alegre

LCY - POA

LCYPOA

London City

Tue 3/2

16:45-22:55

2 stops33h 10m

Porto Alegre Salgado Filho

Tue 10/2

05:30-10:55

2 stops26h 25m

£977

LondonPorto Alegre

LHR - POA

LHRPOA

London Heathrow

Tue 3/2

13:25-09:15

2 stops22h 50m

Porto Alegre Salgado Filho

Mon 9/2

04:45-14:05

1 stop30h 20m

£986

LondonPorto Alegre

LCY - POA

LCYPOA

London City

Wed 17/12

16:45-23:15

2 stops33h 30m

Porto Alegre Salgado Filho

Sat 10/1

11:00-16:10

2 stops26h 10m

£994

Flights are sorted by cheapest return flights first.

Deals found on 19/11

Showing 1-10 of 56 results
1
2
3
...
6

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 14 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 £600). Flying from London to Porto Alegre in August is currently the most expensive (average of £940). 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 20 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 72% 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 £873.

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 50m.

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 20 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
1,412 reviews
Check prices

Boarding

7.8

Food

7.3

Overall

7.7

Entertainment

7.1

Crew

8.4

Comfort

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
1,412 reviews
KLM
7.7
Good
1,412 reviews
Check prices

Boarding

7.8

Food

7.3

Overall

7.7

Entertainment

7.1

Crew

8.4

Comfort

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
1,882 reviews
KLM
7.7
Good
1,412 reviews
Check prices

Boarding

7.8

Food

7.3

Overall

7.7

Entertainment

7.1

Crew

8.4

Comfort

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
673 reviews
KLM
7.7
Good
1,412 reviews
Check prices

Boarding

7.8

Food

7.3

Overall

7.7

Entertainment

7.1

Crew

8.4

Comfort

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
2,067 reviews
KLM
7.7
Good
1,412 reviews
Check prices

Boarding

7.8

Food

7.3

Overall

7.7

Entertainment

7.1

Crew

8.4

Comfort

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
7,579 reviews
KLM
7.7
Good
1,412 reviews
Check prices

Boarding

7.8

Food

7.3

Overall

7.7

Entertainment

7.1

Crew

8.4

Comfort

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. Fly via Air Europa, KLM, or ITA Airways to get the fastest option. The distance between London and Porto Alegre is about 6402 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 £648, 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 most popular routes from London to Porto Alegre?

    The most popular route from London to Porto Alegre is London City - Porto Alegre Salgado Filho. You may also consider London Gatwick - Porto Alegre Salgado Filho or London Heathrow - 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 £600). Flying from London to Porto Alegre in August is currently the most expensive (average of £940). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for London to Porto Alegre

See prices for flight routes from nearby airports that may be better suited for you.
Gatwick to Porto Alegre flights
Heathrow to Porto Alegre flights
Manchester to Porto Alegre flights
Edinburgh to Porto Alegre flights
Birmingham 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 20 November 2025.
AirlineCheapestAverageFlexibilityOn-time
TAP AIR PORTUGALCheapest£648Average£947FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
Air FranceCheapest£661Average£720FlexibilityNo cancel feeOn-time77%
Search Air France flights
LATAM AirlinesCheapest£722Average£1,009FlexibilityNo cancel feeOn-time81%
Search LATAM Airlines flights
Virgin AtlanticCheapest£961Average£1,622FlexibilityNo 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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.