Cheap flights to Washington from St Louis

Round trips from St Louis from $505. Cheapest dates, deal ratings and where to book.

• Spokane: $505, 2026-10-29 to 2026-11-02
• Seattle: $552, 2026-10-08 to 2026-10-15

Nearby

• Oregon
• Idaho
• Montana
• Nevada
• Wyoming
• Utah
• California
• Colorado