Cheap flights from London to Porto Alegre from £342
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
10 Jan — 17 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 11 December 2025.
Sat 13/1206:00LHR - POA
1 stop15h 55mTAP AIR PORTUGAL
Sun 1/215:30POA - LHR
2 stops23h 00mTAP AIR PORTUGAL
Deal found 9/12£915
Sun 14/1206:30LHR - POA
2 stops21h 20mMultiple Airlines
Sun 1/212:50POA - LHR
2 stops21h 55mMultiple Airlines
Deal found 9/12£1,212
Sun 14/1217:00LHR - POA
2 stops27h 45mAmerican Airlines
Tue 13/117:55POA - LHR
2 stops38h 45mAmerican Airlines
Deal found 10/12£1,251
Sat 13/1214:05LHR - POA
2 stops37h 45mMultiple Airlines
Sun 1/206:00POA - LHR
2 stops28h 45mMultiple Airlines
Deal found 9/12£1,299
Sun 14/1221:25LGW - POA
2 stops47h 50mTAP AIR PORTUGAL
Sun 1/215:30POA - LGW
2 stops21h 15mTAP AIR PORTUGAL
Deal found 9/12£1,320
Sat 13/1218:40LGW - POA
2 stops28h 15mMultiple Airlines
Sun 1/214:50POA - LGW
2 stops24h 00mMultiple Airlines
Deal found 9/12£1,334
Thu 25/1217:25LGW - POA
3 stops34h 15mMultiple Airlines
Sun 11/105:15POA - LGW
3 stops32h 10mMultiple Airlines
Deal found 9/12£1,353
Wed 24/1206:30LHR - POA
2 stops33h 30mMultiple Airlines
Sun 11/119:20POA - LHR
2 stops20h 00mMultiple Airlines
Deal found 8/12£1,369
Thu 25/1206:30LHR - POA
2 stops20h 00mMultiple Airlines
Sun 11/118:25POA - LHR
2 stops20h 55mMultiple Airlines
Deal found 8/12£1,401
Thu 25/1206:30LHR - POA
2 stops20h 00mMultiple Airlines
Sat 10/119:30POA - LHR
2 stops39h 15mMultiple Airlines
Deal found 8/12£1,405
Sat 13/1211:30LCY - POA
2 stops48h 05mMultiple Airlines
Sun 1/221:05POA - LCY
2 stops34h 50mMultiple Airlines
Deal found 9/12£1,407
Wed 24/1217:25LGW - POA
2 stops28h 55mMultiple Airlines
Sun 11/105:15POA - LGW
3 stops32h 10mMultiple Airlines
Deal found 9/12£1,416
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 11 December 2025.
Fri 23/118:30LHR - POA
3 stops32h 45mMultiple Airlines
Fri 30/118:15POA - LHR
2 stops20h 15mMultiple Airlines
Deal found 8/12£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£840
Mon 2/320:15LHR - POA
1 stop16h 05mLATAM Airlines
Thu 19/320:10POA - LHR
1 stop14h 55mLATAM Airlines
Deal found 10/12£852
Mon 4/506:55LHR - POA
2 stops20h 30mLufthansa
Thu 21/514:25POA - LHR
2 stops22h 15mLufthansa
Deal found 10/12£852
Wed 15/417:25LGW - POA
2 stops19h 40mAir Europa
Sun 17/508:25POA - LGW
2 stops28h 00mAir Europa
Deal found 8/12£876
Sun 1/310:15LGW - POA
2 stops51h 40mTurkish Airlines
Sun 29/311:45POA - LGW
2 stops24h 35mTurkish Airlines
Deal found 10/12£898
Mon 2/307:45LCY - POA
2 stops20h 00mKLM
Thu 19/313:40POA - LCY
2 stops23h 55mKLM
Deal found 8/12£1,025
Sat 24/111:35LCY - POA
2 stops38h 10mITA Airways
Sat 31/114:10POA - LCY
2 stops41h 45mITA Airways
Deal found 10/12£1,146
Sun 1/315:30LGW - POA
3 stops31h 35mMultiple Airlines
Sun 29/315:10POA - LGW
2 stops19h 30mMultiple Airlines
Deal found 10/12£832
Wed 15/416:25LGW - POA
1 stop32h 00mTAP AIR PORTUGAL
Sat 16/501:40POA - LGW
2 stops29h 40mTAP AIR PORTUGAL
Deal found 8/12£855
Tue 10/220:15LHR - POA
1 stop16h 00mLATAM Airlines
Sun 14/620:05POA - LHR
1 stop15h 00mLATAM Airlines
Deal found 8/12£858
Mon 2/317:25LGW - POA
2 stops23h 40mAir Europa
Thu 19/310:30POA - LGW
2 stops19h 30mAir Europa
Deal found 9/12£895
Tue 10/218:15LCY - POA
2 stops20h 20mLufthansa
Sun 14/611:00POA - LCY
2 stops27h 35mLufthansa
Deal found 8/12£912
Tue 24/211:30LHR - POA
2 stops26h 30mMultiple Airlines
Sun 1/311:40POA - LHR
2 stops24h 15mMultiple Airlines
Deal found 10/12£855
Tue 3/220:15LHR - POA
1 stop16h 00mLATAM Airlines
Tue 10/214:50POA - LHR
1 stop20h 15mLATAM Airlines
Deal found 8/12£861
Mon 2/318:30LHR - POA
1 stop28h 10mTAP AIR PORTUGAL
Thu 19/311:00POA - LHR
2 stops21h 25mTAP AIR PORTUGAL
Deal found 10/12£870
Sat 14/310:00LGW - POA
2 stops32h 55mAir Europa
Wed 18/309:45POA - LGW
2 stops20h 15mAir Europa
Deal found 9/12£909
Sat 24/110:10LGW - POA
2 stops24h 30mMultiple Airlines
Sat 31/114:10POA - LGW
2 stops27h 30mMultiple Airlines
Deal found 10/12£876
Wed 4/307:45LCY - POA
2 stops20h 00mKLM
Thu 9/418:30POA - LCY
2 stops18h 50mKLM
Deal found 8/12£1,095
Wed 4/310:40LGW - POA
1 stop34h 15mTAP AIR PORTUGAL
Thu 9/421:55POA - LGW
1 stop31h 50mTAP AIR PORTUGAL
Deal found 9/12£911
Thu 5/209:40LCY - POA
2 stops28h 55mLufthansa
Mon 15/611:00POA - LCY
2 stops27h 35mLufthansa
Deal found 8/12£1,027
Tue 10/218:15LCY - POA
2 stops20h 20mMultiple Airlines
Thu 28/515:15POA - LCY
2 stops17h 15mMultiple Airlines
Deal found 8/12£896
Sat 18/410:00LCY - POA
2 stops33h 25mMultiple Airlines
Sat 25/410:30POA - LCY
2 stops40h 45mMultiple Airlines
Deal found 8/12£979
Sat 24/111:30LCY - POA
2 stops38h 15mMultiple Airlines
Sat 31/110:25POA - LCY
2 stops26h 45mMultiple Airlines
Deal found 10/12£1,122
Last-minute flights from London to Porto Alegre
Discover last-minute flight deals from London to Porto Alegre. Data last updated 11 December 2025 and is based on user searches.
Sat 13/1206:00LHR - POA
1 stop15h 55mTAP AIR PORTUGAL
Sun 1/215:30POA - LHR
2 stops23h 00mTAP AIR PORTUGAL
Deal found 9/12£915
Sun 14/1206:30LHR - POA
2 stops21h 20mMultiple Airlines
Sun 1/212:50POA - LHR
2 stops21h 55mMultiple Airlines
Deal found 9/12£1,212
Fri 23/118:30LHR - POA
3 stops32h 45mMultiple Airlines
Fri 30/118:15POA - LHR
2 stops20h 15mMultiple Airlines
Deal found 8/12£828
Fri 23/120:15LHR - POA
1 stop18h 20mLATAM Airlines
Fri 30/114:50POA - LHR
1 stop20h 15mLATAM Airlines
Deal found 8/12£870
Sat 24/110:10LGW - POA
2 stops24h 30mMultiple Airlines
Sat 31/114:10POA - LGW
2 stops27h 30mMultiple Airlines
Deal found 10/12£876
Sat 24/106:00LHR - POA
2 stops20h 05mMultiple Airlines
Sat 31/114:10POA - LHR
3 stops28h 25mMultiple Airlines
Deal found 10/12£964
Sat 24/111:30LCY - POA
2 stops38h 15mMultiple Airlines
Sat 31/110:25POA - LCY
2 stops26h 45mMultiple Airlines
Deal found 10/12£1,122
Sat 24/111:35LCY - POA
2 stops38h 10mITA Airways
Sat 31/114:10POA - LCY
2 stops41h 45mITA Airways
Deal found 10/12£1,146
Sat 24/110:10LGW - POA
2 stops24h 30mTAP AIR PORTUGAL
Sat 31/121:10POA - LGW
1 stop33h 40mTAP AIR PORTUGAL
Deal found 10/12£1,186
Sun 25/110:00LGW - POA
2 stops27h 15mAir Europa
Sun 1/208:25POA - LGW
2 stops29h 00mAir Europa
Deal found 10/12£1,000
Sat 31/106:00LHR - POA
2 stops28h 40mMultiple Airlines
Mon 23/220:15POA - LHR
1 stop14h 50mMultiple Airlines
Deal found 9/12£1,005
Sat 31/119:40LHR - POA
2 stops17h 15mMultiple Airlines
Tue 24/217:10POA - LHR
1 stop17h 55mMultiple Airlines
Deal found 9/12£1,159
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 11 December 2025.
Sun 15/308:30LGW - POA
3 stops41h 15mMultiple Airlines
Deal found 10/12£342
Sun 15/321:40LHR - POA
2 stops28h 05mMultiple Airlines
Deal found 10/12£430
Sat 11/418:45LHR - POA
2 stops29h 05mMultiple Airlines
Deal found 8/12£448
Thu 8/109:55LHR - POA
3 stops41h 15mMultiple Airlines
Deal found 9/12£509
Sun 15/320:05LCY - POA
2 stops31h 40mKLM
Deal found 10/12£542
Sat 11/408:00LHR - POA
1 stop18h 40mTAP AIR PORTUGAL
Deal found 8/12£545
Sun 15/320:15LHR - POA
1 stop16h 00mLATAM Airlines
Deal found 10/12£558
Sat 11/412:10LCY - POA
2 stops40h 20mKLM
Deal found 8/12£571
Sat 6/606:30LHR - POA
2 stops32h 35mLufthansa
Deal found 10/12£617
Wed 18/218:30LHR - POA
1 stop26h 25mTAP AIR PORTUGAL
Deal found 7/12£618
Tue 17/208:15LHR - POA
2 stops19h 30mMultiple Airlines
Deal found 7/12£629
Sat 6/608:00LHR - POA
1 stop18h 40mTAP AIR PORTUGAL
Deal found 8/12£629
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 11 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 11 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
Fri 23/1
18:30-00:15
3 stops32h 45m
Porto Alegre Salgado Filho
Fri 30/1
18:15-17:30
2 stops20h 15m
£828
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
£832
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
£840
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
£852
LondonPorto Alegre
LHR - POA
LHRPOA
London Heathrow
Mon 4/5
06:55-23:25
2 stops20h 30m
Porto Alegre Salgado Filho
Thu 21/5
14:25-16:40
2 stops22h 15m
£852
LondonPorto Alegre
LGW - POA
LGWPOA
London Gatwick
Wed 15/4
16:25-20:25
1 stop32h 00m
Porto Alegre Salgado Filho
Sat 16/5
01:40-11:20
2 stops29h 40m
£855
LondonPorto Alegre
LHR - POA
LHRPOA
London Heathrow
Tue 24/2
11:30-11:00
2 stops26h 30m
Porto Alegre Salgado Filho
Sun 1/3
11:40-14:55
2 stops24h 15m
£855
LondonPorto Alegre
LHR - POA
LHRPOA
London Heathrow
Tue 10/2
20:15-09:15
1 stop16h 00m
Porto Alegre Salgado Filho
Sun 14/6
20:05-15:05
1 stop15h 00m
£858
LondonPorto Alegre
LHR - POA
LHRPOA
London Heathrow
Tue 3/2
20:15-09:15
1 stop16h 00m
Porto Alegre Salgado Filho
Tue 10/2
14:50-14:05
1 stop20h 15m
£861
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
£870
Flights are sorted by cheapest return flights first.
Deals found on 10/12
Showing 1-10 of 49 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 £590). Flying from London to Porto Alegre in August is currently the most expensive (average of £976). 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 11 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 £1,004.
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 11 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 TAP AIR PORTUGAL, LATAM Airlines, or Lufthansa 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 £637, 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 £590). Flying from London to Porto Alegre in August is currently the most expensive (average of £976). 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 11 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 11 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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