Stopovers between Boston and London
Boston to London is about 5,240 km. 12 cities sit close enough to the route to add a night or two, and Reykjavík, Porto, Lisbon have airline stopover programs. Pick your dates to see what each one really costs.
Cities on the way
US preclearance on the way home means you land in the US as a domestic arrival.
Sits almost exactly on the great circle between North America and Europe, so the detour is tiny.
Tram from the airport straight to Princes Street.
European feel without crossing the Atlantic.
Plenty of flights from every airline make for flexible stopovers.
RER B from CDG reaches central Paris in about 35 minutes.
Train from Schiphol to Centraal in 15 minutes, every few minutes.
Short train in; Bruges and Ghent are an easy day trip.
Riverside wine town with a direct metro from the airport.
UP Express runs to Union Station in 25 minutes.
One of the easiest stopover cities in Europe: metro from the airport, walkable, great food.
Iberia lets you stop 1–9 nights at no extra airfare.