Cheap flights to Washington from Ontario

Round trips from Ontario from $146. Cheapest dates, deal ratings and where to book.

• Seattle: $146, 2026-11-12 to 2026-11-15
• Pasco: $314, 2026-10-15 to 2026-10-18
• Everett: $496, 2026-10-09 to 2026-10-12

Nearby

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