The cheapest Edinburgh to Boston return flight on the radar right now is £549, flying with Scandinavian Airlines via one or more connections. It covers departures in March 2027, and every dated link below opens that exact EDI–BOS search on Skyscanner. The price we usually record on this route is £520. Across 89 recorded checks it has ranged between £307 and £969. Our sampling points to March 2027 as the cheapest month to fly Edinburgh to Boston.
Prices are re-checked against Skyscanner automatically, and every one shows when it was last confirmed, so nothing here is older than it looks. Not flying from Edinburgh? We track 53 other departure cities for Boston, listed at the foot of this page.
Prices like this tend to vanish fast. If it has gone when you look, try the days either side of the dates above, since Edinburgh to Boston is often still worth booking within a day or two of the fare we found.