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Cheap flights from London to Porto Alegre from £474

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 14/8. Fares are subject to change and may not be available on all flights or dates of travel.
LON — POA
18 Jun — 25 Jun1
1 adult

Cheapflights Tip: The best prices from London to Porto Alegre Salgado Filho are usually found in March or May, booked 80 days in advance, depart on a Thursday or Tuesday and return on a Friday

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 13 June 2025.

Round-trip from

£657

One-way from

£474

Popular in

October

Cheapest in

March

Average price

£1,026
Lufthansa
  • Lufthansa
  • 3/11-16/11
  • 4 total stops
  • 50h 35m total
  • London to Porto Alegre
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14/8
  • 14/8
  • 3 total stops
  • 30h 50m total
  • London to Porto Alegre
Search Deals
Highest demand for flights based on searches. 7% potential increase in price (£56 potential increase over avg. return price).
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Cheapest flight prices on average. 4% potential price decrease (£31 potential savings vs. average return price).
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Average for round-trip flights in June 2025
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Find flight deals from London to Porto Alegre

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 13 June 2025.

Mon 3/1107:40LHR - POA
2 stops31h 00mLufthansa
Sun 16/1110:10POA - LHR
2 stops19h 35mLufthansa
Deal found 11/6£657
Mon 3/1106:00LHR - POA
2 stops20h 55mMultiple Airlines
Sun 16/1105:30POA - LHR
1 stop29h 35mMultiple Airlines
Deal found 11/6£733
Mon 3/1120:05LGW - POA
2 stops26h 45mMultiple Airlines
Sun 16/1118:40POA - LGW
2 stops18h 45mMultiple Airlines
Deal found 11/6£778
Mon 3/1120:15LHR - POA
1 stop16h 00mLATAM Airlines
Sat 15/1104:40POA - LHR
1 stop30h 25mLATAM Airlines
Deal found 11/6£784
Mon 3/1113:30LCY - POA
2 stops25h 10mSWISS
Sun 16/1114:35POA - LCY
2 stops19h 15mSWISS
Deal found 11/6£842
Fri 19/906:15LHR - POA
2 stops19h 30mAir France
Fri 17/1011:05POA - LHR
2 stops19h 25mAir France
Deal found 12/6£842
Wed 17/911:20LHR - POA
2 stops26h 00mTurkish Airlines
Thu 16/1020:10POA - LHR
2 stops33h 40mTurkish Airlines
Deal found 12/6£870
Mon 15/918:45LHR - POA
1 stop31h 00mTAP AIR PORTUGAL
Tue 14/1000:15POA - LHR
1 stop30h 05mTAP AIR PORTUGAL
Deal found 11/6£885
Thu 19/612:05LGW - POA
2 stops39h 10mITA Airways
Wed 25/608:25POA - LGW
2 stops22h 50mITA Airways
Deal found 10/6£893
Wed 17/920:05LHR - POA
2 stops41h 15mSWISS
Thu 16/1015:15POA - LHR
2 stops21h 10mSWISS
Deal found 11/6£896
Thu 19/616:50LCY - POA
2 stops34h 25mITA Airways
Wed 25/605:30POA - LCY
2 stops24h 35mITA Airways
Deal found 10/6£934
Thu 18/911:45LHR - POA
3 stops40h 45mKLM
Fri 17/1013:35POA - LHR
3 stops27h 20mKLM
Deal found 11/6£938

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 13 June 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 3/11

07:40-11:40

2 stops31h 00m

Porto Alegre Salgado Filho

Sun 16/11

10:10-08:45

2 stops19h 35m

£657

LondonPorto Alegre

LHR - POA

LHRPOA

London Heathrow

Mon 3/11

06:00-23:55

2 stops20h 55m

Porto Alegre Salgado Filho

Sun 16/11

05:30-14:05

1 stop29h 35m

£733

LondonPorto Alegre

LGW - POA

LGWPOA

London Gatwick

Mon 3/11

20:05-19:50

2 stops26h 45m

Porto Alegre Salgado Filho

Sun 16/11

18:40-16:25

2 stops18h 45m

£778

LondonPorto Alegre

LHR - POA

LHRPOA

London Heathrow

Mon 3/11

20:15-09:15

1 stop16h 00m

Porto Alegre Salgado Filho

Sat 15/11

04:40-14:05

1 stop30h 25m

£784

LondonPorto Alegre

LCY - POA

LCYPOA

London City

Mon 3/11

13:30-11:40

2 stops25h 10m

Porto Alegre Salgado Filho

Sun 16/11

14:35-12:50

2 stops19h 15m

£842

LondonPorto Alegre

LHR - POA

LHRPOA

London Heathrow

Fri 19/9

06:15-21:45

2 stops19h 30m

Porto Alegre Salgado Filho

Fri 17/10

11:05-10:30

2 stops19h 25m

£842

LondonPorto Alegre

LHR - POA

LHRPOA

London Heathrow

Wed 17/9

11:20-09:20

2 stops26h 00m

Porto Alegre Salgado Filho

Thu 16/10

20:10-09:50

2 stops33h 40m

£870

LondonPorto Alegre

LHR - POA

LHRPOA

London Heathrow

Mon 15/9

18:45-21:45

1 stop31h 00m

Porto Alegre Salgado Filho

Tue 14/10

00:15-10:20

1 stop30h 05m

£885

LondonPorto Alegre

LHR - POA

LHRPOA

London Heathrow

Wed 17/9

20:05-09:20

2 stops41h 15m

Porto Alegre Salgado Filho

Thu 16/10

15:15-16:25

2 stops21h 10m

£896

LondonPorto Alegre

LHR - POA

LHRPOA

London Heathrow

Thu 18/9

11:45-00:30

3 stops40h 45m

Porto Alegre Salgado Filho

Fri 17/10

13:35-20:55

3 stops27h 20m

£927

Flights are sorted by cheapest return flights first.

Deals found on 11/6

Showing 1-10 of 31 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 9 June 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 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 13 June 2025.

It’s optimal to fly from London to Porto Alegre in the morning. By choosing this option you can save up to 7% on the cost of your flight, compared to a flight in the afternoon.

Rainfall in Porto Alegre by month

Plan your trip to Porto Alegre by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Porto Alegre ranges from 70.0 - 130.0 inches per month. September is typically the wettest month, when rainfall can reach 130.0 mm. November is typically the driest time to visit Porto Alegre when rainfall is around 70.0 mm.

Temperature in Porto Alegre by month

Plan your trip to Porto Alegre by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Porto Alegre, use this chart to help with planning. For those seeking warmer temperatures, February is the ideal time of year to visit, when temperatures reach an average of 25.0 C. Travellers hoping to avoid the cold should look outside of June, when temperatures are typically at their lowest (around 13.0 C).

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 13 June 2025.
Read through reviews of airlines operating flights from London to Porto Alegre, such as KLM, Air France and SWISS. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.8
Good
1,358 reviews
Check prices

Food

7.2

Boarding

7.8

Crew

8.4

Entertainment

7.1

Comfort

7.7

Overall

7.8

Reviews

1 / 20
8.0
Excellent

Allan,Jun 2025

YYZ - AMS

I always enjoy flying KLM. Service is attentive, friendly and professional. The seat, when fully reclined is a little hard; some kind of mattress or topper would be helpful here. The dinner was really not very good …. “Meatless meatballs” tasted quite peculiar. Breakfast which consisted of an egg white omelette in flour tortilla was also rather tasteless.
KLM
7.8
Good
1,358 reviews
KLM
7.8
Good
1,358 reviews
Check prices

Food

7.2

Boarding

7.8

Crew

8.4

Entertainment

7.1

Comfort

7.7

Overall

7.8

Reviews

1 / 20
8.0
Excellent

Allan,Jun 2025

YYZ - AMS

I always enjoy flying KLM. Service is attentive, friendly and professional. The seat, when fully reclined is a little hard; some kind of mattress or topper would be helpful here. The dinner was really not very good …. “Meatless meatballs” tasted quite peculiar. Breakfast which consisted of an egg white omelette in flour tortilla was also rather tasteless.
Air France
7.5
Good
1,463 reviews
KLM
7.8
Good
1,358 reviews
Check prices

Food

7.2

Boarding

7.8

Crew

8.4

Entertainment

7.1

Comfort

7.7

Overall

7.8

Reviews

1 / 20
8.0
Excellent

Allan,Jun 2025

YYZ - AMS

I always enjoy flying KLM. Service is attentive, friendly and professional. The seat, when fully reclined is a little hard; some kind of mattress or topper would be helpful here. The dinner was really not very good …. “Meatless meatballs” tasted quite peculiar. Breakfast which consisted of an egg white omelette in flour tortilla was also rather tasteless.
SWISS
7.5
Good
1,624 reviews
KLM
7.8
Good
1,358 reviews
Check prices

Food

7.2

Boarding

7.8

Crew

8.4

Entertainment

7.1

Comfort

7.7

Overall

7.8

Reviews

1 / 20
8.0
Excellent

Allan,Jun 2025

YYZ - AMS

I always enjoy flying KLM. Service is attentive, friendly and professional. The seat, when fully reclined is a little hard; some kind of mattress or topper would be helpful here. The dinner was really not very good …. “Meatless meatballs” tasted quite peculiar. Breakfast which consisted of an egg white omelette in flour tortilla was also rather tasteless.
LATAM Airlines
7.5
Good
1,785 reviews
KLM
7.8
Good
1,358 reviews
Check prices

Food

7.2

Boarding

7.8

Crew

8.4

Entertainment

7.1

Comfort

7.7

Overall

7.8

Reviews

1 / 20
8.0
Excellent

Allan,Jun 2025

YYZ - AMS

I always enjoy flying KLM. Service is attentive, friendly and professional. The seat, when fully reclined is a little hard; some kind of mattress or topper would be helpful here. The dinner was really not very good …. “Meatless meatballs” tasted quite peculiar. Breakfast which consisted of an egg white omelette in flour tortilla was also rather tasteless.
United Airlines
7.4
Good
8,790 reviews
KLM
7.8
Good
1,358 reviews
Check prices

Food

7.2

Boarding

7.8

Crew

8.4

Entertainment

7.1

Comfort

7.7

Overall

7.8

Reviews

1 / 20
8.0
Excellent

Allan,Jun 2025

YYZ - AMS

I always enjoy flying KLM. Service is attentive, friendly and professional. The seat, when fully reclined is a little hard; some kind of mattress or topper would be helpful here. The dinner was really not very good …. “Meatless meatballs” tasted quite peculiar. Breakfast which consisted of an egg white omelette in flour tortilla was also rather tasteless.

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 3 different airlines.

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

    Lufthansa, at £657, was found to be the cheapest airline from London to Porto Alegre.Alternate airlines flying return to your destination include LATAM Airlines and SWISS. These flights start at 29% 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 Lufthansa (£562), ITA Airways (£626), and TAP AIR PORTUGAL (£651).

  • 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.

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
Birmingham to Porto Alegre flights
Manchester to Porto Alegre flights
Edinburgh to Porto Alegre flights

Top 3 airlines flying from London to Porto Alegre

Discover the top 3 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 13 June 2025.
AirlineCheapestAverageFlexibilityOn-time
TAP AIR PORTUGALCheapest£624Average£899FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
Air FranceCheapest£637Average£745FlexibilityNo cancel feeOn-time77%
Search Air France flights
LATAM AirlinesCheapest£693Average£892FlexibilityNo cancel feeOn-time81%
Search LATAM Airlines flights

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

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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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