Seven days is enough for Athens plus two islands if the ferry connections cooperate — which mostly means picking Santorini and Mykonos, the two islands with the most frequent direct service between each other, rather than a more ambitious route that sounds good on paper but leaves you waiting on infrequent boats.
The route: Athens (2 nights) → Santorini (3 nights) → Mykonos (2 nights)
Days 1–2: Athens
Two days covers the essentials: a full day for the Acropolis and Acropolis Museum (go early to beat both heat and tour groups), and a day for the Plaka neighborhood, Syntagma Square, and a sunset from Lycabettus Hill or the Acropolis-facing rooftop bars that have become an Athens specialty in their own right.
Days 3–5: Santorini
The ferry from Piraeus (Athens’s port) to Santorini takes anywhere from about 5 to 11.5 hours depending on whether you book a high-speed or conventional ferry, with tickets starting around €46 — worth booking the high-speed option if the extra cost is worth the time saved, and worth checking Meltemi forecasts if you’re traveling in late July or August. Three days covers Oia’s famous sunset (arrive early for a spot, it gets genuinely crowded), Fira’s caldera-view walk, and either a boat tour of the volcanic caldera or a quieter day at one of the island’s black-sand beaches.
Days 6–7: Mykonos
Santorini to Mykonos runs about 2–3.5 hours by ferry, tickets from roughly €75–90, with the most frequent service (up to 8 daily departures) in peak summer — this route is exactly why Santorini-Mykonos is the reliable pairing rather than a more remote island combination with only a few weekly connections. Two days is enough for Mykonos Town’s whitewashed lanes and windmills, and a beach day at Paradise or Super Paradise if that’s part of the appeal.
The ferry logistics worth planning around
Book Santorini-Mykonos ferries a few days ahead in peak season — routes with 8 daily departures still sell out on popular days. If you’re traveling in late July or August specifically, build a one-day buffer into your schedule rather than a tight back-to-back connection — Meltemi-driven cancellations mainly affect high-speed catamarans, and having zero slack means a single cancelled sailing can genuinely disrupt the rest of the trip.
What this route actually costs
Rough per-person estimate for 7 days, mid-range travel style, not counting international flights: €900–1,300, covering accommodation (Santorini specifically runs well above Athens or Mykonos for equivalent quality), the two ferry legs, food, and typical activities. It moves lower with off-peak dates and simpler accommodation, and considerably higher the moment a caldera-view Santorini hotel with a private pool enters the plan — worth budgeting separately, since that specific splurge is a genuinely different price tier from the rest of the trip.
Before you go
Two things worth sorting before booking: whether you need anything beyond a passport (most Western travelers don’t, under Schengen’s 90-day rule) and when to actually go — this exact route depends entirely on the ferry schedules that only run at full capacity roughly June through September. For the fuller picture, including islands beyond these two, our Greece Travel Guide and existing island-by-island guide go deeper.
Frequently asked questions
Is 7 days enough for Athens, Santorini, and Mykonos?
Yes, at the pace above — two days in Athens and a bit longer on each island is enough to see the essentials, though all three reward more time if you have it.
Should I book ferries in advance?
Yes, especially in peak season — the Santorini-Mykonos route runs frequently but still sells out on popular dates.
What happens if my ferry gets cancelled due to wind?
Operators typically rebook you on the next available sailing, which may be a slower conventional ferry rather than the high-speed one you booked — building a spare day into a late-July/August itinerary is the practical hedge against this actually disrupting your trip.
Planning a different trip? See 7 Days in Italy or 7 Days in Japan.
Planning a trip to Greece? See the full Greece travel guide, or get the complete Greece Travel Guide for offline itineraries and insider tips.
Destinations Editor at Travelcho, covering food culture, city guides, and budget travel across Asia and Europe.
