Cheap flights to Great Smoky Mountains National Park from Portland

Round trips from Portland from $339. Fly into Knoxville/Maryville (TYS). Cheapest dates, deal ratings and where to book.

• Knoxville/Maryville: $339, 2026-10-14 to 2026-10-19

Nearby

• Mammoth Cave
• Congaree
• New River Gorge
• Shenandoah
• Cuyahoga Valley
• Gateway Arch
• Indiana Dunes
• Hot Springs