Latest deals
Insights
When to book
FAQs
Price Alerts

Cheap flights from Rosario to London from £525

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Rosario to London departing on 16/3. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags
Voted winner of Europe's Best Travel App 2023

Save money when you book flights with momondo

Big names, great deals

Big names, great deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customise your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Rosario to London

Cheap return flights

Enter your travel dates to find the best prices.
KLM Logo
04:10 - 16:05ROS-LHR
32h 55m2 stops
KLM Logo
06:30 - 02:15LHR-ROS
22h 45m2 stops
£2,504KLM
Find Deal
Fri, 30 Jan - Fri, 6 Mar
KLM Logo
04:10 - 16:05ROS-LHR
32h 55m2 stops
KLM Logo
06:30 - 02:15LHR-ROS
22h 45m2 stops
£2,567KLM
Find Deal
Fri, 30 Jan - Fri, 6 Mar

KLM flights from Rosario to London Heathrow Airport

Our best KLM deals on Rosario to London Heathrow Airport flight tickets
KLM
30 Jan
ROS04:10Rosario Fisherton
32h 55m
2 stops
LHR16:05London Heathrow
6 Mar
LHR06:30London Heathrow
22h 45m
2 stops
ROS02:15Rosario Fisherton
£2,504
Find similar
KLM
30 Jan
ROS04:10Rosario Fisherton
32h 55m
2 stops
LHR16:05London Heathrow
6 Mar
LHR06:30London Heathrow
22h 45m
2 stops
ROS02:15Rosario Fisherton
£2,567
Find similar

momondo Fare Finder

 
Customise your flight search to find flights from Rosario to London Heathrow Airport 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, momondo users made 279,928 searches. Data last updated 15 October 2025.
Use the filters below to find and compare flights from Rosario to London Heathrow Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

RosarioLondon

ROS - LHR

ROSLHR

Rosario Fisherton

Fri 30/1

04:10-16:05

2 stops32h 55m

London Heathrow

Fri 6/3

06:30-02:15

2 stops22h 45m

£2,504

RosarioLondon

ROS - LHR

ROSLHR

Rosario Fisherton

Fri 30/1

04:10-16:05

2 stops32h 55m

London Heathrow

Fri 6/3

06:30-02:15

2 stops22h 45m

£2,567

RosarioLondon

ROS - LHR

ROSLHR

Rosario Fisherton

Mon 16/3

12:30-17:30

3 stops26h 00m

£525

RosarioLondon

ROS - LHR

ROSLHR

Rosario Fisherton

Sun 15/3

02:55-14:55

3 stops33h 00m

£560

RosarioLondon

ROS - LHR

ROSLHR

Rosario Fisherton

Mon 16/3

04:10-08:25

2 stops25h 15m

£564

RosarioLondon

ROS - LHR

ROSLHR

Rosario Fisherton

Sun 15/3

02:45-14:05

1 stop32h 20m

£678

RosarioLondon

ROS - LHR

ROSLHR

Rosario Fisherton

Mon 16/3

04:10-14:05

1 stop30h 55m

£684

RosarioLondon

ROS - LHR

ROSLHR

Rosario Fisherton

Sun 15/3

02:45-19:35

2 stops37h 50m

£695

Flights are sorted by cheapest return flights first.

Sorted by cheapest first

See travel insights to London from

How to get the cheapest flight ticket from Rosario to London Heathrow Airport

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 airline that flies from Rosario Fisherton to London Heathrow?

LATAM Airlines is the most popular carrier operating from Rosario Fisherton to London Heathrow

When to book flights from Rosario to London Heathrow Airport

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

Cheap Rosario to London Heathrow Airport (ROS to LHR) flight deals and tips

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

Direct flights

None
There are no direct flights from Rosario to London Heathrow Airport. There are no popular flight routes from Rosario to London Heathrow Airport.
Search flight deals

  • How far is Rosario Fisherton to London Heathrow by plane?

    A flight from Rosario Fisherton to London Heathrow will travel around 6874.4 mi. By plane, this route typically takes 32h 55m.

  • When did momondo last update prices for flights from Rosario Fisherton Airport to London Heathrow Airport?

    Prices for flights from Rosario Fisherton Airport to London Heathrow Airport are updated daily.

  • How old do you have to be to fly from Rosario Fisherton Airport to London Heathrow Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Rosario Fisherton Airport to London Heathrow Airport.

  • What documentation or ID do you need to fly to London Heathrow Airport?

    The required travel and health documents for your London Heathrow Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at London Heathrow Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Travelling to a place near London?

Book flights to London if you plan to visit one of these locations
Eastbourne
Milton Keynes
Luton
Gatwick
Maidstone
Northampton
Slough
Swindon
Canterbury
Stratford-upon-Avon
Southend-on-Sea
Ipswich
Ilford
Guildford
Poole
Swanage
Colchester
Dover
Hayes
Chelmsford

Why use momondo?

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

Finding the right flight to London from Rosario is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to London quick and easy, saving you time and money.

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

Yes. All flights to London from Rosario on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Rosario to London?

momondo provides multiple filters to help you find the best flight to London from Rosario. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

If you are simply researching potential flights to London, momondo offers a useful price alert feature which will track prices for flights to London from Rosario and alert you when they change.

An easier way to manage your London Heathrow Airport trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Fri 14/11
Fri 21/11
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to London