Cheap flights from Portland to Knoxville from $260

Travelers frequently search for route combinations, such as Portland and Guadalajara, Mexico City, Los Angeles, Las Vegas, Phoenix, San Francisco, Oaxaca, Denver, Kailua, San Diego, Ontario, Chicago, Puerto Escondido, Oaxaca, New York, Calgary, San José del Cabo, London, Dallas, Puerto Vallarta, Tokyo.

Travelers frequently search for route combinations, such as Knoxville and Fort Lauderdale, Houston, Tampa, Orlando, New York, Austin, Denver, Boston, South Bend, Punta Gorda, Phoenix, Belleville, Las Vegas, Chicago, Jacksonville, Barcelona, Anchorage, London, Washington, D.C., Guatemala City.

The main airport in Portland is Portland International. It is also served by Seattle–Tacoma International, Portland International, Eugene, Roberts Field, Kenmore Air Harbor Seaplane Base.

The main airport in Knoxville is McGhee Tyson. It is also served by Nashville International, McGhee Tyson, Asheville Regional, Greenville–Spartanburg International, Chattanooga Metropolitan, Blue Grass, Tri-Cities Regional.

Currently, you can fly between Portland and Knoxville with United Airlines, Frontier Airlines, Alaska Airlines, Air Canada.

If you don’t have specific dates for your trip between Portland and Knoxville, you can enter a date range into the departure and return fields. Most carriers on the Kiwi.com website allow you to search and book up to six months from the day of your search. Order the search results by the best, cheapest, or fastest route, or find the cheapest outbound and return combination in the pricing table.

Traveling between Portland and Knoxville, you can choose between direct (nonstop) flights or flights with one or more stops. You can select the number of stops on your journey, including an overnight stopover, and the duration of the stopover. What’s more, you can also select where you want to have your stopover. Want to say "Hi" to a friend in another city en route to your destination? Or fancy a quick round of shopping? Go Multi-City or Nomad and add places to your search that you wish to visit.

There are a number of airports in and around Portland. The main one is Portland International and other nearby airports include Seattle–Tacoma International, Portland International, Eugene, Roberts Field, Kenmore Air Harbor Seaplane Base

There are a number of airports in and around Knoxville. The main one is McGhee Tyson and other nearby airports include Nashville International, McGhee Tyson, Asheville Regional, Greenville–Spartanburg International, Chattanooga Metropolitan, Blue Grass, Tri-Cities Regional.