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Cheap flights from London Heathrow Airport to Buenos Aires

1 adult
1 adult, Economy, 0 bags

Find the cheapest flights from London Heathrow Airport to Buenos Aires

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LHR  London Heathrow-BUE Buenos Aires All airports
17866 kmmulti-stop
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BUE  Buenos Aires All airports-LHR London Heathrow
17866 kmmulti-stop
Multiple Airlines

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How to get the cheapest flight ticket from London Heathrow Airport to Buenos Aires

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Buenos Aires?

The cheapest month to fly to Buenos Aires from London Heathrow Airport is in May. Flight prices, which tend to average around $1,628, are often lower during this time because this is during the off-season. If you don’t want to visit Buenos Aires in May, then you should wait until November to fly from London Heathrow Airport, when ticket prices are also cheap, with an average price of $1,746.

How far in advance should I book a flight from London Heathrow Airport to Buenos Aires?

You are more likely to see cheaper flights to Buenos Aires from London Heathrow Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Buenos Aires for around $1,958 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Buenos Aires from London Heathrow Airport for as low as $1,621 on momondo.

How have London Heathrow Airport to Buenos Aires flight prices changed over time?

As of September 2026, prices for London Heathrow Airport to Buenos Aires flights are approximately 34% more expensive when compared to flights at the same time last year.

When to book flights from London Heathrow Airport to Buenos Aires

Are you open to changing your travel dates? Check out the ideal times to fly from London Heathrow Airport to Buenos Aires according to our flight data. Find out which month and days have the cheapest flights.
Estimated return price

Cheap London Heathrow Airport to Buenos Aires (LHR to BUE) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from London Heathrow Airport to Buenos Aires

Fastest flight time

27h 00m

Direct flights

None
The fastest flight from London Heathrow Airport to Buenos Aires takes 27h 00m
There are no direct flights from London Heathrow Airport to Buenos Aires. There are no popular flight routes from London Heathrow Airport to Buenos Aires.
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Frequently asked questions about flying from London Heathrow Airport to Buenos Aires

  • How far is London Heathrow to Buenos Aires by plane?

    London Heathrow and Buenos Aires are 11101.7 km apart from one another. Typically, this will take 27h 00m by plane in normal conditions.

  • When did momondo last update prices for flights from London Heathrow Airport to Buenos Aires?

    Prices for flights from London Heathrow Airport to Buenos Aires are updated daily.

  • How old do you have to be to fly from London Heathrow Airport to Buenos Aires?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and stopovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from London Heathrow Airport to Buenos Aires.

  • What documentation or ID do you need to fly to Buenos Aires?

    The travel and health documents required for your trip to Buenos Aires can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s licence, and a passport valid for six-months after you plan to arrive at Buenos Aires. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular plane model from London Heathrow Airport to Buenos Aires?

Why use momondo?

Why should I use momondo to find a flight deal from London to Buenos Aires?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from London to Buenos Aires for you.

Can I find flights from London to Buenos Aires with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Buenos Aires from London with this policy.

How can momondo help me find flights from London to Buenos Aires?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from London to Buenos Aires.

I’m not ready to book a flight from London to Buenos Aires right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of London to Buenos Aires flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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Find better results for your trip to Argentina

Fly into one of these airports located in Buenos Aires

Buenos Aires Jorge Newbery Airport
Buenos Aires Ministro Pistarini Airport