The cheapest order to fly London, Madrid and Rome from Buenos Aires
There are 6 ways to fly these cities. They do not cost the same. The cheapest works out at about $1,132 a person and the most expensive at $1,238, a difference of $106 for visiting exactly the same places.
Fly them in this order
Buenos Aires → London → Rome → Madrid → Buenos Aires
About $1,132 per person in flights, based on fares recently seen on these routes.
Every order, priced
- Buenos Aires → London → Rome → Madrid → Buenos Aires$1,132cheapest order
- Buenos Aires → Rome → London → Madrid → Buenos Aires$1,137$5 more per person
- Buenos Aires → Madrid → London → Rome → Buenos Aires$1,159$27 more per person
- Buenos Aires → London → Madrid → Rome → Buenos Aires$1,174$42 more per person
- Buenos Aires → Madrid → Rome → London → Buenos Aires$1,222$90 more per person
- Buenos Aires → Rome → Madrid → London → Buenos Aires$1,238$106 more per person
Why end in Madrid
- Buenos Aires to London$558
- London to Rome$30
- Rome to Madrid$31
- Madrid to Buenos Aires$513
- Out of Buenos Aires, the cheapest first flight goes to Madrid at about $546, but the cheapest order starts in London at $558 because the rest of the route is cheaper that way.
- Going home, Madrid is the cheapest city to leave from at about $513, against $616 from London.
- The dearest order pays $616 for London to Buenos Aires, a flight the cheapest order never takes.
- Buenos Aires to London is 49% of what the cheapest order spends on flights, so it is the leg to watch.
Between the cities
- London to Rome: about 1,430 km (890 miles) as the crow flies. No train or bus we would suggest instead of flying.
- Rome to Madrid: about 1,360 km (840 miles) as the crow flies. No train or bus we would suggest instead of flying.
Entry rules for the United Kingdom and the Schengen area depend on your passport. Check them with the IATA Travel Centre before you book.
How much the order matters here
Getting the order right is worth $106 a person on this trip, 9% of what the cheapest way round costs. Of the 107 trips we price in full, that is number 101 for how much the order matters, one of the smaller gaps: on this trip your dates are likely to matter more than the order.
What these numbers are
Cached one-way fares, 12 of 12 legs priced from real observations, put together on November 10, 2026, from fares departing November 10, 2026 onwards. Right for comparing one order with another, not a quote for your dates.
A plan prices your own dates and weighs hours as well as fares, so it can pick a different order from this page.
Put dates on it
Same cities on real dates, plus what one search cannot show: layovers long enough to count as a free city, two tickets that beat one, and cheaper days either side. No account and no card.
One press starts it on January 9, 2027 to January 23, 2027, 14 days, for 2 travelers. Our dates, not yours, and about two minutes.
Plan London, Madrid and Rome from Buenos Aires nowOpen the form instead and pick your own datesSigned out, 3 trips a day per address, priced from cached fares and the free sources, so some legs may be estimates and the plan says which. Signed in, legs are checked live, with 2 free trips you can change afterwards.