Cheap flights from London to Porto Alegre from £341
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 15/3. Fares are subject to change and may not be available on all flights or dates of travel.
LON — POA
11 Jan — 18 Jan1
Return
1 adult
Economy
Return
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from London to Porto Alegre Salgado Filho are usually found in April or May, booked 82 days in advance, depart on a Thursday or Tuesday and return on a Friday
Cheap 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 12 December 2025.
Fri 12/1216:40LGW - POA
1 stop29h 15mTAP AIR PORTUGAL
Fri 19/1205:15POA - LGW
2 stops31h 30mTAP AIR PORTUGAL
Deal found 11/12£1,144
Sun 14/1217:00LHR - POA
2 stops27h 45mAmerican Airlines
Tue 13/117:55POA - LHR
2 stops38h 45mAmerican Airlines
Deal found 10/12£1,246
Fri 12/1218:30LHR - POA
1 stop27h 25mTAP AIR PORTUGAL
Fri 19/1205:15POA - LHR
2 stops37h 20mTAP AIR PORTUGAL
Deal found 11/12£1,346
Sun 14/1217:00LHR - POA
2 stops27h 45mAmerican Airlines
Mon 12/119:20POA - LHR
2 stops32h 00mAmerican Airlines
Deal found 10/12£1,445
Sat 13/1206:00LHR - POA
1 stop15h 55mTAP AIR PORTUGAL
Tue 13/111:00POA - LHR
2 stops31h 35mTAP AIR PORTUGAL
Deal found 10/12£1,503
Sun 21/1219:20LHR - POA
2 stops31h 10mMultiple Airlines
Sat 10/119:30POA - LHR
2 stops39h 15mMultiple Airlines
Deal found 10/12£1,544
Sun 14/1217:00LHR - POA
2 stops27h 45mAmerican Airlines
Sat 10/118:25POA - LHR
2 stops38h 15mAmerican Airlines
Deal found 10/12£1,544
Mon 15/1217:00LHR - POA
2 stops27h 45mAmerican Airlines
Mon 12/119:20POA - LHR
2 stops23h 50mAmerican Airlines
Deal found 12/12£1,555
Mon 15/1211:55LGW - POA
3 stops33h 20mMultiple Airlines
Sun 11/119:40POA - LGW
2 stops35h 20mMultiple Airlines
Deal found 10/12£1,563
Mon 15/1208:25LCY - POA
2 stops41h 20mITA Airways
Tue 13/105:10POA - LCY
2 stops32h 00mITA Airways
Deal found 10/12£1,577
Fri 26/1220:15LHR - POA
1 stop16h 05mVirgin Atlantic
Fri 9/117:55POA - LHR
1 stop17h 10mVirgin Atlantic
Deal found 10/12£1,582
Sat 13/1206:00LHR - POA
1 stop15h 55mTAP AIR PORTUGAL
Mon 12/109:35POA - LHR
2 stops33h 00mTAP AIR PORTUGAL
Deal found 10/12£1,630
Best flights from London to Porto Alegre
Discover carefully curated flight deals from London to Porto Alegre that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 12 December 2025.
Mon 2/306:30LHR - POA
2 stops21h 15mKLM
Wed 25/313:40POA - LHR
2 stops23h 25mKLM
Deal found 10/12£813
Sun 1/315:30LGW - POA
3 stops31h 35mMultiple Airlines
Sun 29/315:10POA - LGW
2 stops19h 30mMultiple Airlines
Deal found 10/12£828
Wed 4/318:30LHR - POA
1 stop26h 25mTAP AIR PORTUGAL
Thu 9/411:00POA - LHR
2 stops20h 00mTAP AIR PORTUGAL
Deal found 10/12£836
Mon 2/320:15LHR - POA
1 stop16h 05mLATAM Airlines
Thu 19/320:10POA - LHR
1 stop14h 55mLATAM Airlines
Deal found 10/12£848
Mon 2/311:10LHR - POA
2 stops29h 55mAir Canada
Thu 19/317:55POA - LHR
2 stops33h 35mAir Canada
Deal found 11/12£883
Sun 1/310:15LGW - POA
2 stops51h 40mTurkish Airlines
Sun 29/311:45POA - LGW
2 stops24h 35mTurkish Airlines
Deal found 10/12£894
Mon 2/317:25LGW - POA
2 stops25h 55mAir Europa
Thu 19/309:45POA - LGW
2 stops27h 40mAir Europa
Deal found 10/12£904
Sun 1/319:20LCY - POA
2 stops19h 15mSWISS
Sun 29/314:25POA - LCY
2 stops23h 05mSWISS
Deal found 10/12£1,048
Tue 24/216:45LCY - POA
2 stops30h 25mITA Airways
Sun 1/311:15POA - LCY
2 stops25h 55mITA Airways
Deal found 11/12£1,129
Tue 24/222:35LHR - POA
2 stops28h 05mMultiple Airlines
Sun 1/311:40POA - LHR
2 stops25h 20mMultiple Airlines
Deal found 11/12£846
Mon 2/318:30LHR - POA
1 stop28h 10mTAP AIR PORTUGAL
Thu 19/311:00POA - LHR
2 stops21h 25mTAP AIR PORTUGAL
Deal found 10/12£866
Tue 24/206:55LHR - POA
2 stops20h 45mLATAM Airlines
Sat 28/204:40POA - LHR
1 stop30h 25mLATAM Airlines
Deal found 11/12£888
Sat 14/310:00LGW - POA
2 stops32h 55mAir Europa
Wed 18/309:45POA - LGW
2 stops20h 15mAir Europa
Deal found 9/12£905
Sat 24/110:10LGW - POA
2 stops24h 30mMultiple Airlines
Sat 31/114:10POA - LGW
2 stops27h 30mMultiple Airlines
Deal found 10/12£872
Wed 4/316:35LGW - POA
1 stop28h 20mTAP AIR PORTUGAL
Thu 9/421:55POA - LGW
1 stop31h 50mTAP AIR PORTUGAL
Deal found 11/12£916
Tue 24/217:25LGW - POA
2 stops23h 55mAir Europa
Sun 1/305:30POA - LGW
2 stops24h 30mAir Europa
Deal found 11/12£921
Mon 2/307:45LCY - POA
2 stops20h 00mKLM
Thu 19/313:40POA - LCY
2 stops24h 40mKLM
Deal found 10/12£1,043
Mon 2/316:35LGW - POA
1 stop30h 05mTAP AIR PORTUGAL
Wed 25/311:00POA - LGW
2 stops25h 05mTAP AIR PORTUGAL
Deal found 10/12£936
Tue 3/216:45LCY - POA
2 stops33h 10mITA Airways
Tue 10/209:35POA - LCY
2 stops22h 20mITA Airways
Deal found 10/12£1,138
Wed 4/307:45LCY - POA
2 stops20h 00mKLM
Thu 9/418:30POA - LCY
2 stops20h 00mKLM
Deal found 10/12£1,116
Sat 24/111:35LCY - POA
2 stops38h 10mITA Airways
Sat 31/114:10POA - LCY
2 stops41h 45mITA Airways
Deal found 10/12£1,140
Sat 24/111:30LCY - POA
2 stops38h 15mMultiple Airlines
Sat 31/110:25POA - LCY
2 stops26h 45mMultiple Airlines
Deal found 10/12£1,117
Sun 25/116:45LCY - POA
2 stops42h 50mMultiple Airlines
Sun 1/212:50POA - LCY
2 stops24h 20mMultiple Airlines
Deal found 10/12£1,139
Sat 14/311:35LCY - POA
2 stops26h 00mITA Airways
Wed 18/315:25POA - LCY
2 stops21h 45mITA Airways
Deal found 10/12£1,384
Last-minute flights from London to Porto Alegre
Discover last-minute flight deals from London to Porto Alegre. Data last updated 12 December 2025 and is based on user searches.
Fri 12/1216:40LGW - POA
1 stop29h 15mTAP AIR PORTUGAL
Fri 19/1205:15POA - LGW
2 stops31h 30mTAP AIR PORTUGAL
Deal found 11/12£1,144
Fri 9/109:05LHR - POA
3 stops27h 50mMultiple Airlines
Fri 16/106:30POA - LHR
3 stops31h 35mMultiple Airlines
Deal found 10/12£1,051
Fri 9/116:45LCY - POA
2 stops20h 10mMultiple Airlines
Fri 16/106:40POA - LCY
2 stops25h 15mMultiple Airlines
Deal found 10/12£1,176
Sat 24/110:10LGW - POA
2 stops24h 30mMultiple Airlines
Sat 31/114:10POA - LGW
2 stops27h 30mMultiple Airlines
Deal found 10/12£872
Sat 24/106:00LHR - POA
2 stops20h 05mMultiple Airlines
Sat 31/114:10POA - LHR
3 stops28h 25mMultiple Airlines
Deal found 10/12£960
Sat 24/111:30LCY - POA
2 stops38h 15mMultiple Airlines
Sat 31/110:25POA - LCY
2 stops26h 45mMultiple Airlines
Deal found 10/12£1,117
Sat 24/111:35LCY - POA
2 stops38h 10mITA Airways
Sat 31/114:10POA - LCY
2 stops41h 45mITA Airways
Deal found 10/12£1,140
Sat 24/110:10LGW - POA
2 stops24h 30mTAP AIR PORTUGAL
Sat 31/121:10POA - LGW
1 stop33h 40mTAP AIR PORTUGAL
Deal found 10/12£1,181
Sun 25/107:00LHR - POA
2 stops43h 55mLATAM Airlines
Sat 31/104:40POA - LHR
1 stop30h 25mLATAM Airlines
Deal found 10/12£913
Sun 25/119:55LHR - POA
2 stops31h 00mMultiple Airlines
Sun 1/220:10POA - LHR
2 stops19h 05mMultiple Airlines
Deal found 10/12£933
Sun 25/110:00LGW - POA
2 stops27h 15mAir Europa
Sun 1/208:25POA - LGW
2 stops29h 00mAir Europa
Deal found 10/12£996
Sun 25/116:45LCY - POA
2 stops42h 50mMultiple Airlines
Sun 1/212:50POA - LCY
2 stops24h 20mMultiple Airlines
Deal found 10/12£1,139
One-way flights from London to Porto Alegre
Search for one-way flight options from London to Porto Alegre. Find affordable one-way fares based on user searches. Data last updated 12 December 2025.
Sun 15/308:30LGW - POA
3 stops41h 15mMultiple Airlines
Deal found 10/12£341
Sun 15/321:40LHR - POA
2 stops28h 05mMultiple Airlines
Deal found 10/12£428
Sun 15/320:05LCY - POA
2 stops31h 40mKLM
Deal found 10/12£540
Sun 15/320:15LHR - POA
1 stop16h 00mLATAM Airlines
Deal found 10/12£556
Sat 6/606:30LHR - POA
2 stops32h 35mLufthansa
Deal found 10/12£614
Sat 6/606:00LHR - POA
1 stop20h 40mTAP AIR PORTUGAL
Deal found 10/12£642
Sun 15/218:30LHR - POA
2 stops31h 45mTAP AIR PORTUGAL
Deal found 10/12£642
Sun 15/210:00LGW - POA
2 stops28h 35mMultiple Airlines
Deal found 10/12£647
Sat 6/610:00LGW - POA
2 stops28h 35mAir Europa
Deal found 10/12£659
Sun 15/220:15LHR - POA
1 stop23h 50mLATAM Airlines
Deal found 10/12£673
Sat 6/608:25LCY - POA
2 stops19h 15mKLM
Deal found 10/12£719
Sun 15/216:45LCY - POA
2 stops52h 30mITA Airways
Deal found 10/12£726
Find 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 12 December 2025.
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 12 December 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
06:30-00:45
2 stops21h 15m
Porto Alegre Salgado Filho
Wed 25/3
13:40-16:05
2 stops23h 25m
£813
LondonPorto Alegre
LGW - POA
LGWPOA
London Gatwick
Sun 1/3
15:30-20:05
3 stops31h 35m
Porto Alegre Salgado Filho
Sun 29/3
15:10-14:40
2 stops19h 30m
£828
LondonPorto Alegre
LHR - POA
LHRPOA
London Heathrow
Wed 4/3
18:30-17:55
1 stop26h 25m
Porto Alegre Salgado Filho
Thu 9/4
11:00-11:00
2 stops20h 00m
£836
LondonPorto Alegre
LHR - POA
LHRPOA
London Heathrow
Tue 24/2
22:35-23:40
2 stops28h 05m
Porto Alegre Salgado Filho
Sun 1/3
11:40-16:00
2 stops25h 20m
£846
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
£848
LondonPorto Alegre
LHR - POA
LHRPOA
London Heathrow
Mon 2/3
18:30-19:40
1 stop28h 10m
Porto Alegre Salgado Filho
Thu 19/3
11:00-11:25
2 stops21h 25m
£866
LondonPorto Alegre
LGW - POA
LGWPOA
London Gatwick
Sat 24/1
10:10-07:40
2 stops24h 30m
Porto Alegre Salgado Filho
Sat 31/1
14:10-20:40
2 stops27h 30m
£872
LondonPorto Alegre
LHR - POA
LHRPOA
London Heathrow
Mon 2/3
11:10-14:05
2 stops29h 55m
Porto Alegre Salgado Filho
Thu 19/3
17:55-06:30
2 stops33h 35m
£883
LondonPorto Alegre
LHR - POA
LHRPOA
London Heathrow
Tue 24/2
06:55-00:40
2 stops20h 45m
Porto Alegre Salgado Filho
Sat 28/2
04:40-14:05
1 stop30h 25m
£888
LondonPorto Alegre
LGW - POA
LGWPOA
London Gatwick
Sun 1/3
10:15-10:55
2 stops51h 40m
Porto Alegre Salgado Filho
Sun 29/3
11:45-16:20
2 stops24h 35m
£894
Flights are sorted by cheapest return flights first.
Deals found on 10/12
Showing 1-10 of 40 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 5 December 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 £588). Flying from London to Porto Alegre in August is currently the most expensive (average of £972). 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 12 December 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 69% 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 £1,000.
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 12m.
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 12 December 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.
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 16h 05m. Fly via KLM, TAP AIR PORTUGAL, or LATAM 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?
TAP AIR PORTUGAL, at £634, 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 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, April is the cheapest month in which you can book a flight from London to Porto Alegre (average of £588). Flying from London to Porto Alegre in August is currently the most expensive (average of £972). 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.
Explore flights to Porto Alegre departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 12 December 2025.
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 12 December 2025.
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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