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Cheap flights from London Heathrow Airport to Asuncion from £618

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 28/2. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — ASU
7 Dec — 14 Dec1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Heathrow to Asuncion

Discover tips and strategies to find the most affordable flight options for your journey from Heathrow (LHR) to Asuncion (ASU). 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 7 November 2025.

Round-trip from

£784

One-way from

£618

Popular in

July

Cheapest in

September

Average price

£900
Avianca
  • Avianca
  • 15/3-21/3
  • 2 total stops
  • 61h 50m total
  • London to Asuncion
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LATAM Airlines
  • LATAM Airlines
  • 28/2
  • 2 total stops
  • 28h 00m total
  • London to Asuncion
Search Deals
Highest demand for flights based on searches. 16% potential increase in price (£152 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£34 potential savings vs. average return price).
Search Deals
Average for round-trip flights in November 2025
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Find flight deals from Heathrow to Asuncion

Enter your travel dates to find the best prices.

Cheapest flights from Heathrow to Asuncion
Explore the most affordable flight options available from Heathrow to Asuncion. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 7 November 2025.

Mon 17/1111:35LHR - ASU
2 stops39h 36mUnited Airlines
Thu 27/1106:33ASU - LHR
2 stops49h 17mUnited Airlines
Deal found 6/11£907
Mon 17/1107:55LHR - ASU
2 stops43h 16mUnited Airlines
Wed 26/1106:33ASU - LHR
2 stops45h 07mUnited Airlines
Deal found 6/11£911
Thu 20/1121:40LHR - ASU
1 stop34h 35mAvianca
Thu 4/1208:20ASU - LHR
1 stop27h 15mAvianca
Deal found 6/11£968
Sun 16/1112:25LHR - ASU
3 stops22h 05mMultiple Airlines
Mon 24/1113:50ASU - LHR
3 stops24h 40mMultiple Airlines
Deal found 5/11£1,036
Thu 20/1121:40LHR - ASU
1 stop34h 35mMultiple Airlines
Wed 3/1203:10ASU - LHR
1 stop31h 55mMultiple Airlines
Deal found 6/11£1,036
Tue 11/1113:30LHR - ASU
2 stops25h 55mMultiple Airlines
Wed 26/1102:45ASU - LHR
1 stop32h 20mMultiple Airlines
Deal found 5/11£1,050
Tue 11/1121:40LHR - ASU
1 stop34h 35mAvianca
Thu 27/1108:20ASU - LHR
1 stop27h 15mAvianca
Deal found 6/11£1,073
Mon 17/1121:40LHR - ASU
3 stops35h 35mMultiple Airlines
Thu 27/1111:05ASU - LHR
2 stops24h 00mMultiple Airlines
Deal found 6/11£1,104

Cheapflights Fare Finder

 
Customise your flight search to find flights from Heathrow to Asuncion 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 7 November 2025.
Use the filters below to find and compare flights from London Heathrow Airport to Asuncion that are best for you.

Fly from

Heathrow

Fly to

Asuncion

Route

Depart

Return

Price

LondonAsuncion

LHR - ASU

LHRASU

London Heathrow

Mon 2/3

20:15-12:25

1 stop19h 10m

Asuncion Silvio Pettirossi

Mon 16/3

18:30-14:05

1 stop16h 35m

£820

LondonAsuncion

LHR - ASU

LHRASU

London Heathrow

Sat 14/3

20:15-12:25

1 stop19h 10m

Asuncion Silvio Pettirossi

Mon 23/3

08:25-22:10

2 stops34h 45m

£893

LondonAsuncion

LHR - ASU

LHRASU

London Heathrow

Mon 16/3

17:25-12:25

2 stops22h 00m

Asuncion Silvio Pettirossi

Sun 22/3

13:20-14:20

2 stops22h 00m

£904

LondonAsuncion

LHR - ASU

LHRASU

London Heathrow

Mon 17/11

12:05-05:30

2 stops44h 25m

Asuncion Silvio Pettirossi

Mon 24/11

06:33-05:55

2 stops44h 22m

£907

LondonAsuncion

LHR - ASU

LHRASU

London Heathrow

Mon 17/11

11:35-00:11

2 stops39h 36m

Asuncion Silvio Pettirossi

Thu 27/11

06:33-10:50

2 stops49h 17m

£907

LondonAsuncion

LHR - ASU

LHRASU

London Heathrow

Fri 20/3

17:25-12:25

2 stops22h 00m

Asuncion Silvio Pettirossi

Sun 5/4

18:55-09:40

2 stops58h 45m

£910

LondonAsuncion

LHR - ASU

LHRASU

London Heathrow

Mon 17/11

07:55-00:11

2 stops43h 16m

Asuncion Silvio Pettirossi

Wed 26/11

06:33-06:40

2 stops45h 07m

£911

LondonAsuncion

LHR - ASU

LHRASU

London Heathrow

Thu 19/3

20:15-10:10

1 stop16h 55m

Asuncion Silvio Pettirossi

Mon 23/3

18:30-18:15

2 stops20h 45m

£919

LondonAsuncion

LHR - ASU

LHRASU

London Heathrow

Mon 9/3

20:15-12:25

1 stop19h 10m

Asuncion Silvio Pettirossi

Mon 23/3

18:30-17:15

2 stops19h 45m

£923

LondonAsuncion

LHR - ASU

LHRASU

London Heathrow

Sun 18/1

20:15-10:10

1 stop16h 55m

Asuncion Silvio Pettirossi

Wed 4/2

18:30-14:05

1 stop16h 35m

£929

Flights are sorted by cheapest return flights first.

Deals found on 5/11

Showing 1-10 of 19 results
1
2

Best time to book a flight from Heathrow to Asuncion

Have a flexible travel schedule? Discover the best time to fly to Asuncion 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 Asuncion

What is the cheapest month to book a flight from London Heathrow Airport to Asuncion?

Currently, March is the cheapest month in which you can book a flight from London Heathrow Airport to Asuncion (average of £638). Flying from London Heathrow Airport to Asuncion in July is currently the most expensive (average of £1,196). 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.

How much does it cost for a return flight from London Heathrow Airport to Asuncion?

Reviews of airlines servicing Asuncion

Get insights into the airlines that provide service to Asuncion. 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 Asuncion. Reviews last updated 7 November 2025.
Get a feel of what it's like to fly with LATAM Airlines from London Heathrow Airport to Asuncion by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
LATAM Airlines
7.5
Good
1,872 reviews
Check prices

Comfort

7.3

Boarding

7.6

Entertainment

7.0

Overall

7.5

Food

6.7

Crew

8.0

Reviews

1 / 20
2.0
Mediocre

Anonymous,Oct 2025

MIA - GRU

Terrible baggage service! Almost lost my connection flight in SP
LATAM Airlines
7.5
Good
1,872 reviews
LATAM Airlines
7.5
Good
1,872 reviews
Check prices

Comfort

7.3

Boarding

7.6

Entertainment

7.0

Overall

7.5

Food

6.7

Crew

8.0

Reviews

1 / 20
2.0
Mediocre

Anonymous,Oct 2025

MIA - GRU

Terrible baggage service! Almost lost my connection flight in SP

Related info for your journey

Find useful and relevant information for your journey from Heathrow to Asuncion. 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 Asuncion from London Heathrow?

    Located just 7.8 mi from the city center, Asuncion Silvio Pettirossi is the airport most travelers will use when flying to Asuncion from London Heathrow. Booking flights from London Heathrow to Silvio Pettirossi (ASU) should be relatively easy as there are 0 daily inbound flights from London Heathrow from 1 airline.

  • How long is the flight from London Heathrow Airport to Asuncion?

    Airlines like LATAM Airlines and United Airlines fly from London Heathrow Airport to Asuncion in about 19h 10m. The time it takes to get you to your destination can typically vary by up to 25h 15m. The distance from London Heathrow Airport to Asuncion is about 6322 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • What is the cheapest airline to fly from London Heathrow Airport to Asuncion round-trip?

    According to our current data, LATAM Airlines (£795), offers the cheapest pricing from London Heathrow Airport to Asuncion. Users have found that LATAM Airlines is 22% cheaper than the other options available to this destination.

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

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

  • How can I find direct flights from Heathrow to Asuncion?

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

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

    Yes. Cheapflights offers flight deals from Heathrow to Asuncion 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 Heathrow Airport to Asuncion?

    Currently, March is the cheapest month in which you can book a flight from London Heathrow Airport to Asuncion (average of £638). Flying from London Heathrow Airport to Asuncion in July is currently the most expensive (average of £1,196). 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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Heathrow to Asuncion

See prices for flight routes from nearby airports that may be better suited for you.
Gatwick to Asuncion flights
London City to Asuncion flights

Top airline flying from Heathrow to Asuncion

Discover the top airline that operate flights from Heathrow to Asuncion. 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 7 November 2025.
AirlineCheapestAverageFlexibilityOn-time
LATAM AirlinesCheapest£795Average£1,061FlexibilityNo cancel feeOn-time81%
Search LATAM Airlines flights

Fly with Cheapflights

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 Heathrow to Asuncion?

Cheapflights makes it easy to find Heathrow to Asuncion 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 Heathrow to Asuncion?

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

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

Yes, we can. To see specific flights from Heathrow to Asuncion 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 Heathrow to Asuncion become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Asuncion from Heathrow today and book when prices fit your budget.

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