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Departures Itineraries
Poseidon Expeditions

MS Sea Spirit • Poseidon Expeditions

12-night British Isles One-Way via Tresco & Portrush

May 9, 2027 → May 21, 2027 • Portsmouth → Leith

$3,467 below typical
$7,539 · $628/night · great deal · ↓32% below typical
Poseidon Expeditions

MS Sea Spirit • Poseidon Expeditions

13-night Arctic Repositioning via Leith, Kirkwall & Seydisfjørdur

May 20, 2027 → Jun 2, 2027 • Edinburgh → Longyearbyen

$3,725 below typical
$8,199 · $631/night · great deal · ↓31% below typical
Poseidon Expeditions

MS Sea Spirit • Poseidon Expeditions

13-night Longyearbyen

Aug 14, 2026 → Aug 27, 2026 • Longyearbyen ↔

$3,249 below typical
$9,230 · $710/night · great deal · ↓26% below typical
Poseidon Expeditions

MS Sea Spirit • Poseidon Expeditions

13-night Longyearbyen → Reykjavík

Aug 26, 2026 → Sep 8, 2026 • Longyearbyen → Reykjavík

$3,249 below typical
$9,230 · $710/night · great deal · ↓26% below typical
Poseidon Expeditions

MS Sea Spirit • Poseidon Expeditions

10-night Arctic Loop via Reykjavík

Sep 7, 2026 → Sep 17, 2026 • Reykjavík ↔

$2,438 below typical
$6,734 · $673/night · great deal · ↓27% below typical
Poseidon Expeditions

MS Sea Spirit • Poseidon Expeditions

10-night Arctic Loop via Reykjavík

Sep 16, 2026 → Sep 26, 2026 • Reykjavík ↔

$2,438 below typical
$6,734 · $673/night · great deal · ↓27% below typical
Poseidon Expeditions

MS Sea Spirit • Poseidon Expeditions

8-night Arctic Loop: Longyearbyen

Jul 26, 2026 → Aug 3, 2026 • Longyearbyen ↔

Great balance
$5,899 · $737/night · great deal · ↓26% below typical