Stopovers between Philadelphia and Istanbul
Philadelphia to Istanbul is about 8,177 km. 12 cities sit close enough to the route to add a night or two, and Zurich, Reykjavík, Geneva have airline stopover programs. Pick your dates to see what each one really costs.
Cities on the way
Train from the airport to the old town in 12 minutes, so even a single night works.
Sits almost exactly on the great circle between North America and Europe, so the detour is tiny.
Compact lakeside city with free public transport for hotel guests.
S-Bahn reaches the centre in 15 minutes; the Rhine valley is close.
US preclearance on the way home means you land in the US as a domestic arrival.
Heathrow Express gets you to Paddington in 15 minutes.
Beer gardens, museums and easy Alpine day trips.
Easy airport train and a very walkable centre.
Train from Schiphol to Centraal in 15 minutes, every few minutes.
RER B from CDG reaches central Paris in about 35 minutes.
Good-value city with LOT's free stopover program.
Iberia lets you stop 1–9 nights at no extra airfare.