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The cheapest order to fly Dublin, Edinburgh and London from Boston

There are 6 ways to fly these cities, and 4 of them can be priced from fares we have seen. They do not cost the same. The cheapest works out at about $710 a person and the most expensive at $833, a difference of $123 for visiting exactly the same places.

Fly them in this order

Boston → London → Dublin → Edinburgh → Boston

About $710 per person in flights, based on fares recently seen on these routes, and the cheapest of the 4 ways round we could price.

The 4 we can price

  1. Boston → London → Dublin → Edinburgh → Boston$710
    cheapest order
  2. Boston → London → Edinburgh → Dublin → Boston$727
    $17 more per person
  3. Boston → Dublin → Edinburgh → London → Boston$822
    $112 more per person
  4. Boston → Dublin → London → Edinburgh → Boston$833
    $123 more per person

Why London first

  1. Boston to London$282
  2. London to Dublin$21
  3. Dublin to Edinburgh$23
  4. Edinburgh to Boston$384
  • Out of Boston, London is the cheapest first stop at about $282. Dublin would be $408.
  • Going home, the cheapest flight leaves from London at about $369, but the cheapest order ends in Edinburgh at $384 because the rest of the route is cheaper that way.
  • Dublin to Edinburgh is about $23, but the other way round is $43. Same two cities, $20 apart on direction alone.
  • The dearest order pays $408 for Boston to Dublin, a flight the cheapest order never takes.
  • Edinburgh to Boston is 54% of what the cheapest order spends on flights, so it is the leg to watch.

Between the cities

  • London to Dublin: about 460 km (290 miles) as the crow flies. Also by ground: SailRail: Stena Line or Irish Ferries and Avanti (change in Holyhead), about 8h, usually $60 to $110.
  • Dublin to Edinburgh: about 350 km (220 miles) as the crow flies. No train or bus we would suggest instead of flying.

Entry rules on a US passport

  • US passport: the UK requires an Electronic Travel Authorisation (ETA) for visa-free visitors, including short visits and landside transit. Apply via the UK ETA app before travel. Official source

Rules change; check the official source for your passport and dates before you book.

What these numbers are

Cached one-way fares, 11 of 12 legs priced from real observations, put together on November 12, 2026, from fares departing November 12, 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 16, 2027 to January 30, 2027, 14 days, for 2 travelers. Our dates, not yours, and about two minutes.

Plan Dublin, Edinburgh and London from Boston nowOpen the form instead and pick your own dates

Signed 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.