The cheapest order to fly Barcelona, Rome and Athens from Boston
There are 6 ways to fly these cities. They do not cost the same. The cheapest works out at about $845 a person and the most expensive at $1,298, a difference of $453 for visiting exactly the same places.
Fly them in this order
Boston → Rome → Athens → Barcelona → Boston
About $845 per person in flights, based on fares recently seen on these routes.
Every order, priced
- Boston → Rome → Athens → Barcelona → Boston$845cheapest order
- Boston → Rome → Barcelona → Athens → Boston$888$43 more per person
- Boston → Barcelona → Rome → Athens → Boston$895$50 more per person
- Boston → Athens → Rome → Barcelona → Boston$900$55 more per person
- Boston → Barcelona → Athens → Rome → Boston$1,274$429 more per person
- Boston → Athens → Barcelona → Rome → Boston$1,298$453 more per person
Why Rome first
- Boston to Rome$335
- Rome to Athens$36
- Athens to Barcelona$57
- Barcelona to Boston$417
- Out of Boston, Rome is the cheapest first stop at about $335. Athens would be $402.
- Going home, Barcelona is the cheapest city to leave from at about $417, against $816 from Rome.
- Rome to Athens is about $36, but the other way round is $55. Same two cities, $19 apart on direction alone.
- The dearest order pays $816 for Rome to Boston, a flight the cheapest order never takes.
- Barcelona to Boston is 49% of what the cheapest order spends on flights, so it is the leg to watch.
Between the cities
- Rome to Athens: about 1,050 km (650 miles) as the crow flies. No train or bus we would suggest instead of flying.
- Athens to Barcelona: about 1,880 km (1170 miles) as the crow flies. No train or bus we would suggest instead of flying.
Entry rules on a US passport
- US passport: visa-free in the Schengen area for 90 days in any 180. The Entry/Exit System registers biometrics at the border, and the ETIAS pre-travel authorization may now be required; check the official site. Official source
Rules change; check the official source for your passport and dates before you book.
How much the order matters here
Getting the order right is worth $453 a person on this trip, 54% of what the cheapest way round costs. Of the 107 trips we price in full, that is number 11 for how much the order matters, one of the trips where it matters most: flying these cities in the wrong order is an expensive mistake.
The same cities from other airports
The cheapest order depends on where you start. From Boston it starts in Rome.
- From Miamistart in Rome, about $714 a person, $496 less than the dearest order
What these numbers are
Cached one-way fares, 12 of 12 legs priced from real observations, put together on September 24, 2026, from fares departing September 28, 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 16, 2027 to January 30, 2027, 14 days, for 2 travelers. Our dates, not yours, and about two minutes.
Plan Barcelona, Rome and Athens from Boston 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, your first trip also searches Google Flights live, and you can change your trips afterwards.