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Find cheap one-way flights from Knoxville to Portland starting at US$108.

For as little as US$108, you can take your next adventure to Portland without breaking the bank. Choose between one-way and return tickets from Knoxville below.

  • One way
  • Round-trip
      • TYS16:19
        21h 42m
        1 stop
        PDX11:01
        Sun, Feb 9|Knoxville - Portland|Frontier Airlines
        US$108US$268
        59% OFF
        59% OFF
        US$268US$108

        Choose Frontier Airlines flights from Knoxville to Portland.The one-way connecting flight with Frontier Airlines departs from Mcghee Tyson Airport on Sun, Feb 9, arriving at Portland International Airport.One-way Prices start from US$108 including taxes and charges.

      • TYS16:19
        21h 44m
        1 stop
        PDX11:03
        Sun, Jan 12|Knoxville - Portland|Frontier Airlines
        US$109US$268
        59% OFF
        59% OFF
        US$268US$109

        Choose Frontier Airlines flights from Knoxville to Portland.The one-way connecting flight with Frontier Airlines departs from Mcghee Tyson Airport on Sun, Jan 12, arriving at Portland International Airport.One-way Prices start from US$109 including taxes and charges.

      • TYS16:19
        21h 44m
        1 stop
        PDX11:03
        Thu, Dec 5|Knoxville - Portland|Frontier Airlines
        US$120US$268
        55% OFF
        55% OFF
        US$268US$120

        Choose Frontier Airlines flights from Knoxville to Portland.The one-way connecting flight with Frontier Airlines departs from Mcghee Tyson Airport on Thu, Dec 5, arriving at Portland International Airport.One-way Prices start from US$120 including taxes and charges.

      • TYS05:20
        8h 28m
        1 stop
        PDX10:48
        Tue, Dec 17|Knoxville - Portland|Delta Air Lines
        US$124
        US$124

        Choose Delta Air Lines flights from Knoxville to Portland.The one-way connecting flight with Delta Air Lines departs from Mcghee Tyson Airport on Tue, Dec 17, arriving at Portland International Airport.One-way Prices start from US$124 including taxes and charges.

      • TYS16:30
        26h 29m
        1 stop
        PDX15:59
        Wed, Dec 18|Knoxville - Portland|United Airlines
        US$207
        US$207

        Choose United Airlines flights from Knoxville to Portland.The one-way connecting flight with United Airlines departs from Mcghee Tyson Airport on Wed, Dec 18, arriving at Portland International Airport.One-way Prices start from US$207 including taxes and charges.

      • TYS18:17
        8h 23m
        1 stop
        PDX23:40
        Mon, Dec 23|Knoxville - Portland|Frontier Airlines
        US$217
        US$217

        Choose Frontier Airlines flights from Knoxville to Portland.The one-way connecting flight with Frontier Airlines departs from Mcghee Tyson Airport on Mon, Dec 23, arriving at Portland International Airport.One-way Prices start from US$217 including taxes and charges.

      • TYS15:51
        9h 28m
        1 stop
        PDX22:19
        Tue, Dec 17|Knoxville - Portland|Alaska Airlines
        US$223
        US$223

        Choose Alaska Airlines flights from Knoxville to Portland.The one-way connecting flight with Alaska Airlines departs from Mcghee Tyson Airport on Tue, Dec 17, arriving at Portland International Airport.One-way Prices start from US$223 including taxes and charges.

      • TYS05:16
        8h 47m
        1 stop
        PDX11:03
        Tue, Dec 17|Knoxville - Portland|American Airlines
        US$224
        US$224

        Choose American Airlines flights from Knoxville to Portland.The one-way connecting flight with American Airlines departs from Mcghee Tyson Airport on Tue, Dec 17, arriving at Portland International Airport.One-way Prices start from US$224 including taxes and charges.

      • TYS07:00
        14h 18m
        1 stop
        PDX18:18
        Mon, Jan 13|Knoxville - Portland|United Airlines
        US$225
        US$225

        Choose United Airlines flights from Knoxville to Portland.The one-way connecting flight with United Airlines departs from Mcghee Tyson Airport on Mon, Jan 13, arriving at Portland International Airport.One-way Prices start from US$225 including taxes and charges.

      • TYS13:58
        7h 43m
        1 stop
        PDX18:41
        Tue, Dec 17|Knoxville - Portland|United Airlines
        US$225
        US$225

        Choose United Airlines flights from Knoxville to Portland.The one-way connecting flight with United Airlines departs from Mcghee Tyson Airport on Tue, Dec 17, arriving at Portland International Airport.One-way Prices start from US$225 including taxes and charges.

      • TYS13:00
        3h 5m
        Nonstop
        PDX14:00
        Thu, Dec 12|Knoxville - Portland|Frontier Airlines
        Find More Flights
        Find More Flights

Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.

When is the cheapest time to book flights from Knoxville to Portland?

These price trend charts carefully monitor and predict how flight prices from Knoxville to Portland will change. Keep a close eye on them to understand when the best time to buy your tickets is.

Displayed prices are calculated based on the cheapest average weekly prices of the corresponding route on Trip.com.

Cheapest airlines flights from Knoxville to Portland

We have a range of prices from different airlines providing flights from Knoxville to Portland. Check below for the journey which best suits your travel needs.

Frontier Airlines
From US$106
Delta Air Lines
From US$124
United Airlines
From US$207
Alaska Airlines
From US$223
American Airlines
From US$224
Allegiant Air
From US$278

Find more flights and airlines

Find cheap flights from Knoxville to Portland by different airports

Did you know that you can save money and time on an alternative route from Knoxville to Portland? Check out some of the different available routes below.

  • Cheapest
    Frontier Airlines
    TYS
    16:19
    20h 28m
    2 transfer
    PDX
    09:47
    Mcghee Tyson Airport - Portland International Airport
    Thu, Dec 12Frontier Airlines
    US$106
  • Frontier Airlines
    TYS
    16:19
    20h 28m
    2 transfer
    PDX
    09:47
    Mcghee Tyson Airport - Portland International Airport
    Thu, Dec 12Frontier Airlines
    US$106
    Find More Flights

Frequently Asked Questions

  • When are flight tickets from Knoxville (TYS) to Portland (PDX) the cheapest?

    Airlines adjust prices for flights from Knoxville to Portland based on the departure date and time of your selection. By analyzing data from all airlines, we've discovered that on Trip.com, you can find the lowest flight prices on Tuesdays, Wednesdays, and Saturdays.

  • How much do flights from Knoxville (TYS) to Portland (PDX) cost?

    According to Trip.com's data, the lowest price is around $504.

How to find a cheap flight from Knoxville to Portland

If you don’t know some of the key things to look out for when buying flight tickets, prices can often end up sky high or, worse, sold out! We’ve carefully compiled our six most important steps to help ensure you’re getting the best deals when planning your next journey.
1
Book Early
Once prices are gone, they're gone. Lock in deals while you can!
2
Compare Flight Prices
Compare prices on travel agency and airline websites.
3
Look Out for Deals
Check airline and travel agency websites for latest flight deals
4
Check One-way Fares
Buying two cheap one-way flights can sometimes be a better deal than a round-trip.
5
Try Different Dates
Flying during the week, early in the morning, or late at night can help save money.
6
Use the Trip.com App
Save up to £10 per person when booking your flights on Trip.com

Knoxville to Portland Flight Information

Cheapest nonstop flight price$108
Off-season for travelNovember
Peak season for travelFebruary
Flight distance3,393.5 km
Popular airlineAmerican Airlines

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