LHR - ASU

£429 Find Cheap Flights from London Heathrow Airport to Asuncion

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Heathrow to Asuncion departing on 1/4. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Asuncion

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from London to Asuncion, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from London to Asuncion, as well as popular online travel agencies
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Everything you should know

Cheapest return fare
£679
Typical prices: £695-£791
Avianca
Thu 12/3Thu 19/3
LHR - ASU • 1 stop
Cheapest one-way flight
£429
Avianca
Wed 1/4
LHR - ASU • 1 stop
Top airlines
Avianca
Cheapest • from £679 (return)
LATAM Airlines
Best reviews • 7.5 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to travel
March
Cheapest • 29% price drop
December
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you love your trip to Asuncion!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Heathrow to Asuncion (LHR-ASU)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Heathrow to Asuncion that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from Heathrow to Asuncion

Thu, 12 Mar - Thu, 19 Mar
Avianca Logo
21:40 - 05:15
LHR
-
ASU
34h 35m
1 stop
Avianca Logo
08:20 - 14:35
ASU
-
LHR
27h 15m
1 stop
£679Avianca
Tue, 10 Mar - Tue, 17 Mar
Avianca Logo
21:40 - 05:15
LHR
-
ASU
34h 35m
1 stop
Avianca Logo
08:20 - 14:35
ASU
-
LHR
27h 15m
1 stop
£680Avianca
Tue, 10 Mar - Tue, 24 Mar
Avianca Logo
21:40 - 05:15
LHR
-
ASU
34h 35m
1 stop
Avianca Logo
08:20 - 14:35
ASU
-
LHR
27h 15m
1 stop
£726Avianca
Tue, 10 Mar - Tue, 17 Mar
Multiple Airlines Logo
06:00 - 07:30
LHR
-
ASU
28h 30m
2 stops
Multiple Airlines Logo
13:55 - 17:30
ASU
-
LHR
24h 35m
2 stops
£744Multiple Airlines
Tue, 10 Mar - Tue, 24 Mar
Avianca Logo
21:40 - 05:15
LHR
-
ASU
34h 35m
1 stop
Avianca Logo
08:20 - 14:35
ASU
-
LHR
27h 15m
1 stop
£754Avianca
Mon, 13 Apr - Sun, 3 May
Avianca Logo
22:05 - 04:40
LHR
-
ASU
34h 35m
1 stop
Avianca Logo
08:10 - 15:35
ASU
-
LHR
27h 25m
1 stop
£767Avianca
Thu, 12 Mar - Thu, 19 Mar
LATAM Airlines Logo
06:15 - 23:30
LHR
-
ASU
20h 15m
2 stops
LATAM Airlines Logo
18:30 - 14:05
ASU
-
LHR
16h 35m
1 stop
£785LATAM Airlines
Tue, 10 Mar - Tue, 24 Mar
LATAM Airlines Logo
20:15 - 10:30
LHR
-
ASU
17h 15m
1 stop
LATAM Airlines Logo
13:20 - 14:05
ASU
-
LHR
21h 45m
1 stop
£806LATAM Airlines
Tue, 10 Mar - Tue, 17 Mar
LATAM Airlines Logo
06:00 - 10:30
LHR
-
ASU
31h 30m
2 stops
LATAM Airlines Logo
13:20 - 14:05
ASU
-
LHR
21h 45m
1 stop
£812LATAM Airlines
Fri, 17 Apr - Sun, 3 May
Avianca Logo
22:05 - 04:40
LHR
-
ASU
34h 35m
1 stop
Avianca Logo
08:10 - 15:35
ASU
-
LHR
27h 25m
1 stop
£813Avianca
Booking Insights

KAYAK's insights & trends for Heathrow to Asuncion flights

Get data-powered insights and trends into flights from Heathrow to Asuncion to help you find the cheapest flights, the best time to fly and much more.

How much is a return flight from London Heathrow Airport to Asuncion?

This analysis is based on the cheapest return trip price found on KAYAK in the last 12 months by searching for a flight from London Heathrow Airport to Asuncion departing in March.

What is the cheapest month to fly from London Heathrow Airport to Asuncion?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from London Heathrow Airport to Asuncion, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from London Heathrow Airport to Asuncion is March, where tickets cost £730 (return) on average. On the other hand, the most expensive months are December and July, where the average cost of round-trip tickets is £1,529 and £1,434 respectively.

Good to know - Cheap tickets from London Heathrow Airport to Asuncion

Low seasonJanuary
Cheapest flight£429
Best time to beat the crowds but there is an average 7% increase in price.
Most popular time to fly (49% more expensive on average)
Flight from London Heathrow Airport to Asuncion

When to book flights from Heathrow to Asuncion

Are your dates flexible? Find out the best times to travel from Heathrow to Asuncion based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking London Heathrow Airport to Asuncion flights

  • What is the cheapest flight from London Heathrow Airport to Asuncion?

    In the last 3 days, the lowest price for a flight from London Heathrow Airport to Asuncion was £429 for a one-way ticket and £679 for a return.

  • Which aircraft models fly most regularly from London Heathrow Airport to Asuncion?

    We unfortunately don’t have that data for this specific route.

  • How does KAYAK find such low prices on flights from London Heathrow Airport to Asuncion?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from London Heathrow Airport to Asuncion.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from London Heathrow Airport to Asuncion?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Asuncion from London Heathrow Airport is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights from London Heathrow Airport to Asuncion?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to Asuncion with an airline and back to London Heathrow Airport with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from London Heathrow Airport to Asuncion?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Asuncion from London Heathrow Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Heathrow to Asuncion

 
See real verified KAYAK customer reviews for airlines flying from London to Asuncion. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Heathrow to Asuncion? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.5
LATAM AirlinesOverall score based on 1915 reviews
7.5Boarding
7.3Comfort
7.0Entertainment
6.7Food
8.0Crew
Airline reviews

Latam wouldn’t tell me how much checked luggage would until I was at the airport and they charged me the highest price possible. Besides that, it was okay.

10.0 ExcellentSarah, Jan 2026
ANF - SCL
Read more LATAM Airlines reviews

Latam wouldn’t tell me how much checked luggage would until I was at the airport and they charged me the highest price possible. Besides that, it was okay.

There was a mechanical issue with the plane that they had to work on before we could take off. That's fine, by all means, PLEASE make sure the mechanics are functioning properly. What was a problem was the fact that we sat on the tarmac for 4.5 hours without moving, without letting us off the plane, and without climate control and air running through the plane. There was no explanation as to what was going on; they just kept promising that it would be "15 minutes, then we are on our way." At one point, they even switched the entire crew out and told everyone we just needed to wait for new employees to show up. Then, as the 4 hours were not moving, an hour before the full refund, they made a big show about "the flight starting and the doors are locked, so you have to sit down." We didn't move for another 40 minutes; they were just trying to skirt around legalities that entitled us to restitution. When the flight finally was underway, the plane was gigantic but cramped in design, my entertainment screen kept freezing and glitching, and subtitles didn't work, and the crew was passive-aggressive. Terrible flight.

Comfort in exit seat was excellent. FLight crew and flight were excellent. However exit seat tray table was broken so could not use it. Entertainment monitor did not work at all despite attempts to reset it.

LATAM’s crews are fine, but God help you if you need any customer service. Their app and website never work, with error after error. Trying to solve anything over the phone is painful, and lastly, the boarding pass LATAM gave me to board the flight with Delta was invalid and I had to purchase an emergency one-way ticket at the last minute to get home.

We traveled with two young children, and it was not possible for our family to be seated together. No one offered help or assistance to organize seating so we could sit with our kids. In the end, we managed to find two seats in Economy so I could at least sit with one of them, even though I had originally paid for Comfort+. In summary, I had to downgrade my seat just to be able to sit with one of my children, which was very disappointing

I booked a flight through Kayak to Brazil I have traveled to Brazil several times before Kayak Delta or LATAM never mentioned during the booking or in the pre flight process that the visa requirements to visit Brazil have changed earlier this year. I was unaware of this change and as such never got a visa and was unable to fly from JFK to Sao Paulo Add to this that Delta allowed me to fly from Boston to JFK which they should not have as I didn’t have a visa. It has been a terrible experience and a huge loss of money

Wish the seats were a little more comfortable.. it was a 6 hrs nonstop trip. But the crew was courteous and w a smile

The assistance we received and the flight itself was wonderful. We will fly with LATAM airlines again, in the future.

Latam may be the worst airline in the world, far worse than even the lowest of low cost airlines in the USA. I wasted hours trying to PAY THEM TO CHECK A BAG! Then they misled me at the terminal, sent me through the wrong security line, the list goes on and on... Just absolutely terrible in every way. Avoid at all costs.

Poor, the airline was not able to help me move flights.

Everything you need to know for your flight from Heathrow to Asuncion

Information on your arrival and departure airports