Cheap flights from Portland to Knoxville from $418

Travelers frequently search for route combinations, such as Portland and Las Vegas, Mexico City, Los Angeles, Guadalajara, San Diego, Phoenix, Dallas, Ontario, Minneapolis, San Francisco, Denver, Chicago, Houston, Cleveland, Burbank, Santa Ana, Salt Lake City, Calgary, Atlanta, Orlando.

Travelers frequently search for route combinations, such as Knoxville and Orlando, Boston, Tampa, Fort Lauderdale, Las Vegas, San Francisco, Chicago, Austin, Phoenix, Guatemala City, Denver, New York, Los Angeles, Salt Lake City, St. Louis, Charlotte, Seattle, Richmond, London, Raleigh.

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

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

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

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, Boeing 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, Asheville Regional, McGhee Tyson, Greenville–Spartanburg International, Chattanooga Metropolitan, Blue Grass, Tri-Cities Regional.