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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 $829 a person and the most expensive at $986, a difference of $157 for visiting exactly the same places.

Fly them in this order

Boston → Rome → Athens → Barcelona → Boston

About $829 per person in flights, based on fares recently seen on these routes.

Every order, priced

  1. Boston → Rome → Athens → Barcelona → Boston$829
    cheapest order
  2. Boston → Rome → Barcelona → Athens → Boston$894
    $65 more per person
  3. Boston → Athens → Rome → Barcelona → Boston$895
    $66 more per person
  4. Boston → Barcelona → Rome → Athens → Boston$898
    $69 more per person
  5. Boston → Barcelona → Athens → Rome → Boston$918
    $89 more per person
  6. Boston → Athens → Barcelona → Rome → Boston$986
    $157 more per person

Why Rome first

  1. Boston to Rome$330
  2. Rome to Athens$49
  3. Athens to Barcelona$54
  4. Barcelona to Boston$396
  • Out of Boston, Rome is the cheapest first stop at about $330. Athens would be $425.
  • Going home, Barcelona is the cheapest city to leave from at about $396, against $490 from Athens.
  • The dearest order pays $485 for Rome to Boston, a flight the cheapest order never takes.
  • Barcelona to Boston is 48% 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 authorisation 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 $157 a person on this trip, 19% of what the cheapest way round costs. Of the 72 trips we price in full, that is number 48 for how much the order matters, about the middle: worth getting right, and worth checking against your own dates.

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 October 29, 2026, from fares departing October 29, 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.

Other trips priced this way

From Boston

Trips through the same cities

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 2, 2027 to January 16, 2027, 14 days, for 2 travelers. Our dates, not yours, and about two minutes.

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Signed out, 3 plans 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.