Route notes
Why this routing works
This 3-week multi-stop itinerary is built around one primary stay and one short onward stop: Washington DC to Tunis for 20 nights, then Tunis to Istanbul for 3 nights, before returning to Washington DC. The sequencing keeps the longest stay first and uses Istanbul as a brief second city before the transatlantic return.
As a ticketing structure, this works cleanly as an open multi-stop journey rather than separate round-trips. Keeping Tunis and Istanbul on one economy itinerary can simplify the overall routing and keep the return aligned with the final stop instead of backtracking mid-trip.
With departure in May, the schedule fits squarely into the apr-jun season window provided for this fare range. The timing is straightforward for travelers who want most of the trip concentrated in one destination, with a shorter final stop added before heading home.