Cheap Flights from COS

Seattle (SEA)

2026-04-24–2026-05-02 • Southwest • $237 — Save $119 (~27%) Book

2026-04-30–2026-05-06 • Southwest • $237 — Save $119 (~27%) Book

2026-04-05–2026-04-14 • Delta • $258 — Save $92 (~21%) Book