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Cheap flights from London Heathrow Airport to Asuncion from £444

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 14/1. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — ASU
8 Feb — 15 Feb1
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 9 January 2026.

Round-trip from

£778

One-way from

£444

Popular in

December

Cheapest in

March

Average price

£1,127
Avianca
  • Avianca
  • 10/3-24/3
  • 2 total stops
  • 61h 50m total
  • London to Asuncion
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LATAM Airlines
  • LATAM Airlines
  • 14/1
  • 1 total stop
  • 17h 10m total
  • London to Asuncion
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (£117 potential increase over avg. return price).
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Cheapest flight prices on average. 4% potential price decrease (£36 potential savings vs. average return price).
Search Deals
Average for round-trip flights in January 2026
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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 9 January 2026.

Tue 10/321:40LHR - ASU
1 stop34h 35mAvianca
Tue 24/308:20ASU - LHR
1 stop27h 15mAvianca
Deal found 8/1£778
Sun 8/321:40LHR - ASU
1 stop34h 35mAvianca
Tue 10/308:20ASU - LHR
1 stop27h 15mAvianca
Deal found 7/1£780
Sun 8/318:40LHR - ASU
2 stops19h 50mMultiple Airlines
Thu 12/311:45ASU - LHR
2 stops18h 00mMultiple Airlines
Deal found 7/1£792
Wed 4/206:30LHR - ASU
2 stops26h 02mKLM
Wed 11/206:42ASU - LHR
2 stops30h 23mKLM
Deal found 7/1£797
Wed 15/422:05LHR - ASU
1 stop34h 35mAvianca
Wed 22/408:10ASU - LHR
1 stop27h 25mAvianca
Deal found 8/1£814
Mon 2/320:15LHR - ASU
1 stop19h 10mLATAM Airlines
Mon 16/318:30ASU - LHR
1 stop16h 35mLATAM Airlines
Deal found 8/1£820
Mon 9/320:15LHR - ASU
1 stop19h 10mLATAM Airlines
Mon 23/318:30ASU - LHR
1 stop16h 35mLATAM Airlines
Deal found 8/1£821
Tue 10/306:00LHR - ASU
2 stops20h 30mLATAM Airlines
Tue 24/313:20ASU - LHR
1 stop21h 45mLATAM Airlines
Deal found 8/1£838
Sun 8/320:15LHR - ASU
1 stop17h 15mLATAM Airlines
Sun 15/313:20ASU - LHR
2 stops22h 00mLATAM Airlines
Deal found 7/1£840

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 9 January 2026.
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

Wed 15/4

22:05-04:40

1 stop34h 35m

Asuncion Silvio Pettirossi

Wed 22/4

08:10-15:35

1 stop27h 25m

£814

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

Mon 9/3

20:15-12:25

1 stop19h 10m

Asuncion Silvio Pettirossi

Wed 11/3

13:20-14:05

1 stop21h 45m

£852

LondonAsuncion

LHR - ASU

LHRASU

London Heathrow

Fri 6/3

20:15-12:25

1 stop19h 10m

Asuncion Silvio Pettirossi

Mon 9/3

18:30-14:05

1 stop16h 35m

£856

LondonAsuncion

LHR - ASU

LHRASU

London Heathrow

Tue 3/3

20:15-10:30

1 stop17h 15m

Asuncion Silvio Pettirossi

Wed 11/3

18:30-14:05

1 stop16h 35m

£856

LondonAsuncion

LHR - ASU

LHRASU

London Heathrow

Fri 6/3

20:15-12:25

1 stop19h 10m

Asuncion Silvio Pettirossi

Thu 12/3

18:30-14:05

1 stop16h 35m

£856

LondonAsuncion

LHR - ASU

LHRASU

London Heathrow

Tue 3/3

20:15-10:30

1 stop17h 15m

Asuncion Silvio Pettirossi

Thu 12/3

18:30-14:05

1 stop16h 35m

£856

LondonAsuncion

LHR - ASU

LHRASU

London Heathrow

Fri 6/3

20:15-12:25

1 stop19h 10m

Asuncion Silvio Pettirossi

Sun 8/3

18:30-14:05

1 stop16h 35m

£856

LondonAsuncion

LHR - ASU

LHRASU

London Heathrow

Thu 5/3

20:15-10:25

1 stop17h 10m

Asuncion Silvio Pettirossi

Thu 12/3

18:30-14:05

1 stop16h 35m

£856

LondonAsuncion

LHR - ASU

LHRASU

London Heathrow

Sat 17/1

20:15-10:15

1 stop17h 00m

£525

Flights are sorted by cheapest return flights first.

Deals found on 7/1

Showing 1-10 of 20 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 £621). Flying from London Heathrow Airport to Asuncion in July is currently the most expensive (average of £1,165). 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 9 January 2026.
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
1,901 reviews
Check prices

Entertainment

7.0

Comfort

7.3

Boarding

7.6

Crew

8.0

Food

6.7

Overall

7.5

Reviews

1 / 20
2.0
Mediocre

JC,Jan 2026

FLN - GRU

Plane was late in FLN and missed connection in GRU. No alternative was given to me until 6 hours later and I was delayed by over 12 hours total.
LATAM Airlines
7.5
Good
1,901 reviews
LATAM Airlines
7.5
Good
1,901 reviews
Check prices

Entertainment

7.0

Comfort

7.3

Boarding

7.6

Crew

8.0

Food

6.7

Overall

7.5

Reviews

1 / 20
2.0
Mediocre

JC,Jan 2026

FLN - GRU

Plane was late in FLN and missed connection in GRU. No alternative was given to me until 6 hours later and I was delayed by over 12 hours total.

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 Avianca and LATAM 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 15h 25m. 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 (£808), 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 £621). Flying from London Heathrow Airport to Asuncion in July is currently the most expensive (average of £1,165). 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 9 January 2026.
AirlineCheapestAverageFlexibilityOn-time
LATAM AirlinesCheapest£808Average£1,131FlexibilityNo 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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