Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from London to Porto Alegre from £339

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London to Porto Alegre departing on 4/3. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Discover deals from 900+ travel sites with momondo.

Voted winner of Europe's Best Travel App 2023
Travel Warning: Due to flooding, the airport may be currently closed. Check local travel advisories before booking.

Save money when you book flights with momondo

Big names, great deals

Big names, great deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customise your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from London to Porto Alegre

Cheap return flights

Enter your travel dates to find the best prices.
TAP AIR PORTUGAL Logo
19:55 - 19:40
LHR
-
POA
26h 45m
1 stop
TAP AIR PORTUGAL Logo
21:10 - 18:55
POA
-
LHR
18h 45m
1 stop
£713TAP AIR PORTUGAL
Fri, 6 Mar - Sat, 14 Mar
TAP AIR PORTUGAL Logo
06:00 - 19:40
LHR
-
POA
16h 40m
1 stop
TAP AIR PORTUGAL Logo
21:10 - 15:30
POA
-
LHR
15h 20m
1 stop
£723TAP AIR PORTUGAL
Sat, 7 Mar - Sat, 14 Mar
Multiple Airlines Logo
17:25 - 17:00
LGW
-
POA
27h 35m
2 stops
Multiple Airlines Logo
10:00 - 09:00
POA
-
LGW
19h 00m
2 stops
£787Multiple Airlines
Tue, 7 Apr - Wed, 22 Apr
Multiple Airlines Logo
06:00 - 16:25
LHR
-
POA
38h 25m
2 stops
Multiple Airlines Logo
12:25 - 22:00
POA
-
LHR
29h 35m
2 stops
£788Multiple Airlines
Tue, 7 Apr - Wed, 22 Apr
LATAM Airlines Logo
20:15 - 09:20
LHR
-
POA
16h 05m
1 stop
LATAM Airlines Logo
20:10 - 14:05
POA
-
LHR
14h 55m
1 stop
£805LATAM Airlines
Mon, 2 Mar - Thu, 19 Mar
LATAM Airlines Logo
20:15 - 09:20
LHR
-
POA
16h 05m
1 stop
LATAM Airlines Logo
20:10 - 14:05
POA
-
LHR
14h 55m
1 stop
£810LATAM Airlines
Mon, 2 Mar - Thu, 19 Mar
KLM Logo
07:45 - 23:40
LCY
-
POA
18h 55m
2 stops
KLM Logo
13:40 - 17:20
POA
-
LCY
24h 40m
2 stops
£972KLM
Thu, 5 Mar - Sat, 14 Mar
KLM Logo
07:45 - 23:40
LCY
-
POA
18h 55m
2 stops
KLM Logo
13:40 - 16:35
POA
-
LCY
23h 55m
2 stops
£1,003KLM
Wed, 4 Mar - Sun, 15 Mar
Lufthansa Logo
17:15 - 11:35
LCY
-
POA
21h 20m
2 stops
Lufthansa Logo
14:50 - 17:40
POA
-
LCY
23h 50m
2 stops
£1,006Lufthansa
Sun, 8 Mar - Sun, 15 Mar
Lufthansa Logo
09:15 - 08:50
LCY
-
POA
27h 35m
2 stops
Lufthansa Logo
12:25 - 17:55
POA
-
LCY
25h 30m
2 stops
£1,050Lufthansa
Tue, 7 Apr - Wed, 22 Apr

LATAM Airlines flights from London to Porto Alegre

Our best LATAM Airlines deals on London to Porto Alegre flight tickets
LATAM Airlines
2 Mar
LHR20:15London Heathrow
16h 05m
1 stop
POA09:20Porto Alegre Salgado Filho
19 Mar
POA20:10Porto Alegre Salgado Filho
14h 55m
1 stop
LHR14:05London Heathrow
£805
LATAM Airlines
2 Mar
LHR20:15London Heathrow
16h 05m
1 stop
POA09:20Porto Alegre Salgado Filho
19 Mar
POA20:10Porto Alegre Salgado Filho
14h 55m
1 stop
LHR14:05London Heathrow
£810
LATAM Airlines
2 Mar
LHR20:15London Heathrow
16h 05m
1 stop
POA09:20Porto Alegre Salgado Filho
2 Jun
POA20:05Porto Alegre Salgado Filho
15h 00m
1 stop
LHR15:05London Heathrow
£821

KLM flights from London to Porto Alegre

Our best KLM deals on London to Porto Alegre flight tickets
KLM
4 May
LHR06:30London Heathrow
21h 25m
2 stops
POA23:55Porto Alegre Salgado Filho
21 May
POA18:25Porto Alegre Salgado Filho
19h 10m
2 stops
LHR17:35London Heathrow
£848
KLM
16 Mar
LHR06:30London Heathrow
21h 15m
2 stops
POA00:45Porto Alegre Salgado Filho
30 Mar
POA18:20Porto Alegre Salgado Filho
17h 55m
2 stops
LHR16:15London Heathrow
£900
KLM
5 Mar
LCY07:45London City
18h 55m
2 stops
POA23:40Porto Alegre Salgado Filho
14 Mar
POA13:40Porto Alegre Salgado Filho
24h 40m
2 stops
LCY17:20London City
£972

momondo 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, momondo users made 279,928 searches. Data last updated 7 February 2026.
Use the filters below to find and compare flights from London to Porto Alegre that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LondonPorto Alegre

LHR - POA

LHRPOA

London Heathrow

Fri 6/3

19:55-19:40

1 stop26h 45m

Porto Alegre Salgado Filho

Sat 14/3

21:10-18:55

1 stop18h 45m

£713

LondonPorto Alegre

LHR - POA

LHRPOA

London Heathrow

Sat 7/3

06:00-19:40

1 stop16h 40m

Porto Alegre Salgado Filho

Sat 14/3

21:10-15:30

1 stop15h 20m

£723

LondonPorto Alegre

LGW - POA

LGWPOA

London Gatwick

Tue 7/4

17:25-17:00

2 stops27h 35m

Porto Alegre Salgado Filho

Wed 22/4

10:00-09:00

2 stops19h 00m

£787

LondonPorto Alegre

LHR - POA

LHRPOA

London Heathrow

Tue 7/4

06:00-16:25

2 stops38h 25m

Porto Alegre Salgado Filho

Wed 22/4

12:25-22:00

2 stops29h 35m

£788

LondonPorto Alegre

LHR - POA

LHRPOA

London Heathrow

Mon 2/3

20:15-09:20

1 stop16h 05m

Porto Alegre Salgado Filho

Thu 19/3

20:10-14:05

1 stop14h 55m

£805

LondonPorto Alegre

LHR - POA

LHRPOA

London Heathrow

Mon 2/3

20:15-09:20

1 stop16h 05m

Porto Alegre Salgado Filho

Thu 19/3

20:10-14:05

1 stop14h 55m

£810

LondonPorto Alegre

LCY - POA

LCYPOA

London City

Thu 5/3

07:45-23:40

2 stops18h 55m

Porto Alegre Salgado Filho

Sat 14/3

13:40-17:20

2 stops24h 40m

£972

LondonPorto Alegre

LCY - POA

LCYPOA

London City

Wed 4/3

07:45-23:40

2 stops18h 55m

Porto Alegre Salgado Filho

Sun 15/3

13:40-16:35

2 stops23h 55m

£1,003

LondonPorto Alegre

LCY - POA

LCYPOA

London City

Sun 8/3

17:15-11:35

2 stops21h 20m

Porto Alegre Salgado Filho

Sun 15/3

14:50-17:40

2 stops23h 50m

£1,006

LondonPorto Alegre

LCY - POA

LCYPOA

London City

Tue 7/4

09:15-08:50

2 stops27h 35m

Porto Alegre Salgado Filho

Wed 22/4

12:25-17:55

2 stops25h 30m

£1,050

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to Porto Alegre from

How to get the cheapest flight ticket from London to Porto Alegre

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between London and Porto Alegre?

What is the cheapest month to fly to Porto Alegre?

In general, May is the cheapest month to fly from London to Porto Alegre. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around £733. If you aren’t able to travel during the month of May, then book flights to Porto Alegre from London during February instead. Flights to Porto Alegre in February, while not as cheap as those in May, still average around £770.

How far in advance should I book a flight to Porto Alegre?

You are more likely to see cheaper flights to Porto Alegre from London when booking weeks ahead of your departure date. In general, you can expect to find flights to Porto Alegre for around £929 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Porto Alegre from London for as low as £727 on momondo.

Can stopping save me money on London to Porto Alegre flights?

You could potentially save up to 12% on your flight if you consider stops on a London to Porto Alegre flight.

How have London to Porto Alegre flight prices changed over time?

When to book flights from London to Porto Alegre

Are you open to changing your travel dates? Check out the ideal times to fly from London to Porto Alegre according to our flight data. Find out which month and days have the cheapest flights.
Estimated return price

Cheap London to Porto Alegre (LON to POA) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from London to Porto Alegre

Fastest flight time

15h 30m

Direct flights

None
The fastest flight from London to Porto Alegre takes 15h 30m
There are no direct flights from London to Porto Alegre. There are no popular flight routes from London to Porto Alegre.
Search flight deals

  • How far is London to Porto Alegre Salgado Filho by plane?

    Porto Alegre Salgado Filho is 6424.7 mi away from London. In terms of flight time, this usually takes a little over 15h 30m.

  • When did momondo last update prices for flights from London to Porto Alegre Salgado Filho Airport?

    Prices for flights from London to Porto Alegre Salgado Filho Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from London to Porto Alegre Salgado Filho Airport?

  • How old do you have to be to fly from London to Porto Alegre Salgado Filho Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from London to Porto Alegre Salgado Filho Airport.

  • What documentation or ID do you need to fly to Porto Alegre Salgado Filho Airport?

    The necessary travel and health documents for your Porto Alegre Salgado Filho Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from London to Porto Alegre?

Best airlines flying from London to Porto Alegre

Compare and see reviews for airlines that fly from London to Porto Alegre with momondo
Airline
Rating
Free Cancellation
Price
TAP AIR PORTUGALPriceFrom £687Free CancellationRating
7.1
2,135 reviews
Search TAP AIR PORTUGAL flights
LATAM AirlinesPriceFrom £720Free CancellationRating
7.5
1,917 reviews
Search LATAM Airlines flights
Virgin AtlanticPriceFrom £1,109Free CancellationRating
7.5
678 reviews
Search Virgin Atlantic flights

Why use momondo?

Why should I use momondo to find a flight deal from London to Porto Alegre?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from London to Porto Alegre for you.

Can I find flights from London to Porto Alegre with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for London to Porto Alegre flights to just show those with flexible booking policies.

How can momondo help me find flights from London to Porto Alegre?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Porto Alegre from London.

I’m not ready to book a flight from London to Porto Alegre right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Porto Alegre from London. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

An easier way to manage your Porto Alegre trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Mon 9/3
Mon 16/3
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Brazil

Fly your favourite airline to Porto Alegre

Airlines are sorted and displayed according to clicks in the past 7 days on momondo
LATAM Airlines
TAP AIR PORTUGAL
Virgin Atlantic