5-Day Greece Itinerary: Athens + Santorini

Quick answer: This 5-day Greece itinerary covers the must-see highlights without rushing, with detailed day-by-day plans, restaurant recommendations, and budget guidance.

Best for: first-timers who want Athens’ ancient core plus one island, happy with early starts, one ferry day, and a mix of ruins, tavernas, and beach time.

Day 1 — Athens Ancient Heart

Land at Athens International and ride the blue Metro Line 3 straight into Syntagma (about €9 / roughly $10, around 40 minutes) — far smoother than a taxi through traffic. Drop bags, then climb to the Acropolis before the midday heat. Book a timed morning slot online (adult entry is about €30 / roughly $33 in 2026); the early gate spares you both crowds and the marble glare on the Parthenon. Wind down through the marble-paved Dionysiou Areopagitou promenade to the Acropolis Museum, whose glass floor hovers over a live excavation. For lunch, dive into the tavernas tucked under the crag in Plaka. Planning note: skip Plaka’s tourist strip for a plate of grilled octopus and a carafe of house wine in quieter Anafiotika, the Cycladic-style hamlet of whitewashed cottages clinging to the Acropolis’s north slope — built by 19th-century island stonemasons.

Day 2 — Neighborhoods & Sounion Sunset

Start in the Ancient Agora, where Socrates once argued philosophy beneath the superbly preserved Temple of Hephaestus. Wander north into Monastiraki for its Sunday-heavy flea market, then coffee in gritty-cool Psyrri. Grab a proper souvlaki wrap for a couple of euros (roughly $2–3) at one of the grill joints ringing Monastiraki Square. In late afternoon, escape the city: the orange KTEL coastal bus leaves from near Pedion tou Areos park for Cape Sounion (about €6.30 / roughly $7 each way, around 2 hours down the Athenian Riviera). The reward is the 5th-century-BC Temple of Poseidon on a headland, its Doric columns catching a legendary sunset over the Aegean. Planning note: the last public bus back departs before dark, so if you want to actually watch the sun sink into the sea, book a return tour or taxi — otherwise you will be stranded at the cape.

Day 3 — Ferry to Santorini

Rise early and take the Metro or a short taxi to Piraeus, Athens’s vast port. Board a high-speed catamaran to Santorini (SeaJets and similar lines cross in about 5 hours; a conventional Blue Star ferry is cheaper but takes roughly 8). Fares vary wildly by season and speed — budget roughly €60–90 (about $65–100) and book ahead in summer, as sailings sell out. Grab a window seat on the port side for views of Paros and Ios slipping past. Santorini’s ferries dock at Athinios, a working port below the cliffs; pre-arrange your hotel transfer or a bus up the switchback road, because taxis are famously scarce here. Settle into Fira or quieter Firostefani, then toast your arrival with a crisp glass of the island’s volcanic Assyrtiko white as the caldera glows at dusk.

Day 4 — Caldera Cliffside Hike

Beat the heat with the island’s signature walk: the Fira-to-Oia caldera trail, a roughly 10 km cliff-edge path that most walkers finish in 3–5 hours. Start by 7–8 am and carry plenty of water — shade is nonexistent and shops open late. The route strings together Firostefani and Imerovigli (the caldera’s highest village, around 350 m), where a short spur drops to the dramatic ruined fortress of Skaros Rock. The trail undulates over cobbles and rough volcanic dirt before descending into Oia, the postcard village of blue domes and cascading white houses. Reward the effort with a late lunch of grilled fresh fish. Planning note: Oia’s sunset is genuinely mobbed — stake out a spot along the walkway toward the Byzantine Castle ruins an hour early, or watch from a caldera-view cafe with a cold beer (roughly €6–8 / about $7–9) instead of fighting the crush.

Day 5 — Akrotiri & Farewell Flight

Devote your last morning to the extraordinary Akrotiri archaeological site on the island’s south end — a Bronze Age Minoan town buried in volcanic ash around 1600 BC, its streets, drainage and multi-storey houses preserved under a modern climate roof (entry about €12 / roughly $13). It is Greece’s own Pompeii and blissfully cooler than the cliffside villages. Nearby, cool off at the volcanic Red Beach below its rust-colored cliffs, or taste at one of the wineries along the road for a flight of Assyrtiko and sweet Vinsanto (tastings roughly €15–25 / about $16–27). Then transfer to compact Santorini (Thira) Airport for the quick hop back to Athens (frequent Aegean and SKY express flights, about 50 minutes). Planning note: fly rather than ferry on your final leg — the short flight buys hours and sidesteps rough afternoon Aegean seas that can leave the catamaran crossing queasy.