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Cheap flights from London Heathrow Airport to Rio de Janeiro Santos Dumont Airport, Brazil from £436

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 24/8. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SDU
16 Jul — 23 Jul1
1 adult

Cheap flight deals from Heathrow to Santos Dumont

Discover tips and strategies to find the most affordable flight options for your journey from Heathrow (LHR) to Santos Dumont (SDU). 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 July 2025.

Round-trip from

£759

One-way from

£436

Popular in

December

Cheapest in

March

Average price

£943
LATAM Airlines
  • LATAM Airlines
  • 3/9-17/9
  • 3 total stops
  • 54h 00m total
  • London to Rio de Janeiro
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24/8
  • 24/8
  • 2 total stops
  • 20h 05m total
  • London to Rio de Janeiro
Search Deals
Highest demand for flights based on searches. 1% potential increase in price (£10 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£17 potential savings vs. average return price).
Search Deals
Average for round-trip flights in July 2025
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Find flight deals from Heathrow to Santos Dumont

Cheapest flights from Heathrow to Santos Dumont
Explore the most affordable flight options available from Heathrow to Santos Dumont. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 11 July 2025.

Wed 3/921:20LHR - SDU
1 stop16h 15mLATAM Airlines
Wed 17/921:20SDU - LHR
2 stops37h 45mLATAM Airlines
Deal found 9/7£759
Fri 14/1113:25LHR - SDU
2 stops27h 55mAir Canada
Sun 30/1115:00SDU - LHR
2 stops37h 10mAir Canada
Deal found 10/7£762
Wed 15/1006:00LHR - SDU
2 stops20h 25mMultiple Airlines
Mon 27/1015:45SDU - LHR
1 stop19h 20mMultiple Airlines
Deal found 9/7£783

Cheapflights Fare Finder

Customise your flight search to find flights from Heathrow to Santos Dumont 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 July 2025.
Use the filters below to find and compare flights from London Heathrow Airport to Rio de Janeiro Santos Dumont Airport that are best for you.

Fly from

Heathrow

Fly to

Santos Dumont

Route

Depart

Return

Price

LondonRio de Janeiro

LHR - SDU

LHRSDU

London Heathrow

Wed 3/9

21:20-09:35

1 stop16h 15m

Rio de Janeiro Santos Dumont

Wed 17/9

21:20-15:05

2 stops37h 45m

£759

LondonRio de Janeiro

LHR - SDU

LHRSDU

London Heathrow

Mon 8/9

06:00-20:25

2 stops18h 25m

Rio de Janeiro Santos Dumont

Thu 18/9

11:25-15:35

2 stops24h 10m

£791

LondonRio de Janeiro

LHR - SDU

LHRSDU

London Heathrow

Wed 1/10

08:30-14:20

2 stops33h 50m

Rio de Janeiro Santos Dumont

Wed 15/10

08:20-09:35

2 stops45h 15m

£868

LondonRio de Janeiro

LHR - SDU

LHRSDU

London Heathrow

Sun 24/8

06:10-22:15

2 stops20h 05m

£436

LondonRio de Janeiro

LHR - SDU

LHRSDU

London Heathrow

Mon 8/9

16:40-14:20

2 stops25h 40m

£460

LondonRio de Janeiro

LHR - SDU

LHRSDU

London Heathrow

Tue 2/9

21:20-09:35

1 stop16h 15m

£636

LondonRio de Janeiro

LHR - SDU

LHRSDU

London Heathrow

Sat 6/9

19:50-22:20

2 stops30h 30m

£681

LondonRio de Janeiro

LHR - SDU

LHRSDU

London Heathrow

Mon 4/8

16:40-08:40

2 stops44h 00m

£865

Flights are sorted by cheapest return flights first.

Deals found on 10/7

Best time to book a flight from Heathrow to Santos Dumont

Have a flexible travel schedule? Discover the best time to fly to Santos Dumont from Heathrow 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 Heathrow Airport to Rio de Janeiro Santos Dumont Airport

What is the cheapest time of day to fly from LHR to SDU?

Find hourly flight availability from Heathrow to Santos Dumont. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 11 July 2025.

When flying from London Heathrow Airport to Rio de Janeiro Santos Dumont Airport, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Reviews of airlines servicing Santos Dumont

Get insights into the airlines that provide service to Santos Dumont. 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 Santos Dumont. Reviews last updated 11 July 2025.
Read reviews from past customers who have flown with LATAM Airlines, United Airlines, andTurkish Airlines from London Heathrow Airport to Rio de Janeiro Santos Dumont Airport. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
LATAM Airlines
7.5
Good
1,807 reviews
Check prices

Overall

7.5

Boarding

7.6

Comfort

7.4

Food

6.7

Crew

8.1

Entertainment

7.0

Reviews

1 / 20
4.0
Okay

Murilo,Jun 2025

SFO - LAX

I had mixed feelings regarding this flight. Called several times Latam and Delta regarding the purchase of checked baggage and price. I was told 80 dollars, could not buy it ahead of time,, they told me it was not Possible, that I had to buy at the airport. Check in my luggage the attendant says 80 dollars but I was charged 200 . No one could get me a solid answer why. Very disappointing
LATAM Airlines
7.5
Good
1,807 reviews
LATAM Airlines
7.5
Good
1,807 reviews
Check prices

Overall

7.5

Boarding

7.6

Comfort

7.4

Food

6.7

Crew

8.1

Entertainment

7.0

Reviews

1 / 20
4.0
Okay

Murilo,Jun 2025

SFO - LAX

I had mixed feelings regarding this flight. Called several times Latam and Delta regarding the purchase of checked baggage and price. I was told 80 dollars, could not buy it ahead of time,, they told me it was not Possible, that I had to buy at the airport. Check in my luggage the attendant says 80 dollars but I was charged 200 . No one could get me a solid answer why. Very disappointing
United Airlines
7.4
Good
8,846 reviews
LATAM Airlines
7.5
Good
1,807 reviews
Check prices

Overall

7.5

Boarding

7.6

Comfort

7.4

Food

6.7

Crew

8.1

Entertainment

7.0

Reviews

1 / 20
4.0
Okay

Murilo,Jun 2025

SFO - LAX

I had mixed feelings regarding this flight. Called several times Latam and Delta regarding the purchase of checked baggage and price. I was told 80 dollars, could not buy it ahead of time,, they told me it was not Possible, that I had to buy at the airport. Check in my luggage the attendant says 80 dollars but I was charged 200 . No one could get me a solid answer why. Very disappointing
Turkish Airlines
7.3
Good
3,896 reviews
LATAM Airlines
7.5
Good
1,807 reviews
Check prices

Overall

7.5

Boarding

7.6

Comfort

7.4

Food

6.7

Crew

8.1

Entertainment

7.0

Reviews

1 / 20
4.0
Okay

Murilo,Jun 2025

SFO - LAX

I had mixed feelings regarding this flight. Called several times Latam and Delta regarding the purchase of checked baggage and price. I was told 80 dollars, could not buy it ahead of time,, they told me it was not Possible, that I had to buy at the airport. Check in my luggage the attendant says 80 dollars but I was charged 200 . No one could get me a solid answer why. Very disappointing
Air Canada
7.1
Good
9,696 reviews
LATAM Airlines
7.5
Good
1,807 reviews
Check prices

Overall

7.5

Boarding

7.6

Comfort

7.4

Food

6.7

Crew

8.1

Entertainment

7.0

Reviews

1 / 20
4.0
Okay

Murilo,Jun 2025

SFO - LAX

I had mixed feelings regarding this flight. Called several times Latam and Delta regarding the purchase of checked baggage and price. I was told 80 dollars, could not buy it ahead of time,, they told me it was not Possible, that I had to buy at the airport. Check in my luggage the attendant says 80 dollars but I was charged 200 . No one could get me a solid answer why. Very disappointing
TAP AIR PORTUGAL
7.1
Good
1,917 reviews
LATAM Airlines
7.5
Good
1,807 reviews
Check prices

Overall

7.5

Boarding

7.6

Comfort

7.4

Food

6.7

Crew

8.1

Entertainment

7.0

Reviews

1 / 20
4.0
Okay

Murilo,Jun 2025

SFO - LAX

I had mixed feelings regarding this flight. Called several times Latam and Delta regarding the purchase of checked baggage and price. I was told 80 dollars, could not buy it ahead of time,, they told me it was not Possible, that I had to buy at the airport. Check in my luggage the attendant says 80 dollars but I was charged 200 . No one could get me a solid answer why. Very disappointing

Related info for your journey

Find useful and relevant information for your journey from Heathrow to Santos Dumont. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines to fly from London Heathrow Airport to Rio de Janeiro Santos Dumont Airport one-way?

    £460 is the cheapest one-way deal found within the past few days, from United Airlines. You may also be able to find cheap deals on LATAM Airlines and TAP AIR PORTUGAL, with prices starting from £636 and £681, respectively.

  • Can I find deals for flights from Heathrow to Santos Dumont that include hotel bookings?

    Yes. In addition to deals on Heathrow to Santos Dumont flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Heathrow to Santos Dumont?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Heathrow to Santos Dumont.

  • Can I find deals for business class flights from Heathrow to Santos Dumont?

    Yes. Cheapflights offers flight deals from Heathrow to Santos Dumont 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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Deals for Heathrow to Santos Dumont flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets from Heathrow to Santos Dumont?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Heathrow to Santos Dumont for you. Better yet — we are completely free to use.

Can Cheapflights find flights from Heathrow to Santos Dumont with no change fees?

Certainly. Search results for flights to Santos Dumont from Heathrow shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from Heathrow to Santos Dumont become cheaper?

Of course! You can now track prices for flights from Heathrow to Santos Dumont and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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