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Cheap Flights from Knoxville to Portland
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Cheap Flights from Knoxville to Portland starting at S$ 146

Discover our range of affordable one-way and round-trip flights from Knoxville to Portland and kick-start your next adventure today!

  • One way
  • Round-trip
      • TYS16:19
        21h 42m
        1 stop
        PDX11:01
        Sun, Feb 9|Knoxville - Portland|Frontier Airlines
        S$ 146S$ 345
        57% OFF
        57% OFF
        S$ 345S$ 146

        Fly from Knoxville to Portland on Sun, Feb 9 with Frontier Airlines. One-way connecting flights with Frontier Airlines depart Mcghee Tyson Airport and arrive Portland International Airport starting at S$ 146 including taxes and charges.

      • TYS16:19
        21h 44m
        1 stop
        PDX11:03
        Sun, Jan 12|Knoxville - Portland|Frontier Airlines
        S$ 147S$ 345
        56% OFF
        56% OFF
        S$ 345S$ 147

        Fly from Knoxville to Portland on Sun, Jan 12 with Frontier Airlines. One-way connecting flights with Frontier Airlines depart Mcghee Tyson Airport and arrive Portland International Airport starting at S$ 147 including taxes and charges.

      • TYS16:19
        21h 44m
        1 stop
        PDX11:03
        Thu, Dec 5|Knoxville - Portland|Frontier Airlines
        S$ 161S$ 345
        53% OFF
        53% OFF
        S$ 345S$ 161

        Fly from Knoxville to Portland on Thu, Dec 5 with Frontier Airlines. One-way connecting flights with Frontier Airlines depart Mcghee Tyson Airport and arrive Portland International Airport starting at S$ 161 including taxes and charges.

      • TYS05:20
        8h 28m
        1 stop
        PDX10:48
        Tue, Dec 17|Knoxville - Portland|Delta Air Lines
        S$ 167
        S$ 167

        Fly from Knoxville to Portland on Tue, Dec 17 with Delta Air Lines. One-way connecting flights with Delta Air Lines depart Mcghee Tyson Airport and arrive Portland International Airport starting at S$ 167 including taxes and charges.

      • TYS16:30
        26h 29m
        1 stop
        PDX15:59
        Wed, Dec 18|Knoxville - Portland|United Airlines
        S$ 279
        S$ 279

        Fly from Knoxville to Portland on Wed, Dec 18 with United Airlines. One-way connecting flights with United Airlines depart Mcghee Tyson Airport and arrive Portland International Airport starting at S$ 279 including taxes and charges.

      • TYS18:17
        8h 23m
        1 stop
        PDX23:40
        Mon, Dec 23|Knoxville - Portland|Frontier Airlines
        S$ 292
        S$ 292

        Fly from Knoxville to Portland on Mon, Dec 23 with Frontier Airlines. One-way connecting flights with Frontier Airlines depart Mcghee Tyson Airport and arrive Portland International Airport starting at S$ 292 including taxes and charges.

      • TYS15:51
        9h 28m
        1 stop
        PDX22:19
        Tue, Dec 17|Knoxville - Portland|Alaska Airlines
        S$ 300
        S$ 300

        Fly from Knoxville to Portland on Tue, Dec 17 with Alaska Airlines. One-way connecting flights with Alaska Airlines depart Mcghee Tyson Airport and arrive Portland International Airport starting at S$ 300 including taxes and charges.

      • TYS05:16
        8h 47m
        1 stop
        PDX11:03
        Tue, Dec 17|Knoxville - Portland|American Airlines
        S$ 301
        S$ 301

        Fly from Knoxville to Portland on Tue, Dec 17 with American Airlines. One-way connecting flights with American Airlines depart Mcghee Tyson Airport and arrive Portland International Airport starting at S$ 301 including taxes and charges.

      • TYS07:00
        14h 18m
        1 stop
        PDX18:18
        Mon, Jan 13|Knoxville - Portland|United Airlines
        S$ 303
        S$ 303

        Fly from Knoxville to Portland on Mon, Jan 13 with United Airlines. One-way connecting flights with United Airlines depart Mcghee Tyson Airport and arrive Portland International Airport starting at S$ 303 including taxes and charges.

      • TYS13:58
        7h 43m
        1 stop
        PDX18:41
        Tue, Dec 17|Knoxville - Portland|United Airlines
        S$ 303
        S$ 303

        Fly from Knoxville to Portland on Tue, Dec 17 with United Airlines. One-way connecting flights with United Airlines depart Mcghee Tyson Airport and arrive Portland International Airport starting at S$ 303 including taxes and charges.

      • TYS13:00
        3h 5m
        Nonstop
        PDX14:00
        Wed, Dec 11|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.

Cheapest time to fly 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 lowest average weekly prices of the corresponding route on Trip.com.

Cheapest Airlines flying from Knoxville to Portland

Compare prices from various providers below to understand which option best suits your travel needs, before enjoying a comfortable journey with a trusted airline from Knoxville to Portland.

Frontier Airlines
From S$ 143
Delta Air Lines
From S$ 167
United Airlines
From S$ 279
Alaska Airlines
From S$ 300
American Airlines
From S$ 301
Allegiant Air
From S$ 375

Find more flights and airlines

Alternative Routes from Knoxville to Portland

There are various non-direct routes from Knoxville to Portland which could be cheaper and faster! Check out these alternative options to see if they could work for your trip.

  • Cheapest
    Frontier Airlines
    TYS
    16:19
    20h 28m
    2 transfer
    PDX
    09:47
    Mcghee Tyson Airport - Portland International Airport
    Thu, Dec 12Frontier Airlines
    S$ 143
  • Frontier Airlines
    TYS
    16:19
    20h 28m
    2 transfer
    PDX
    09:47
    Mcghee Tyson Airport - Portland International Airport
    Thu, Dec 12Frontier Airlines
    S$ 143
    Find More Flights

Frequently Asked Questions

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

    Airlines adjust prices for flights from Knoxville to Portland based on the date and time of your booking. By analyzing data from all airlines, on Trip.com, you can find the cheapest flight prices on Tuesdays, Wednesdays, and Saturdays.

  • How much is a flight from Knoxville (TYS) to Portland (PDX) cost?

    According to Trip.com's data, the lowest price is around S$ 679.

  • How many airports in Portland?

How to find a cheap flight from Knoxville to Portland

If you leave it until the last minute and forget to check some of the key information when booking tickets, prices can often end up skyrocketing. Below, you can find our top tips for getting the best value flights – from changing dates to chasing deals, there are plenty ways to keep your next trip affordable.
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

Find cheapest flight ticket from Knoxville to Portland

Cheapest direct flight priceS$ 146
Off-season for travelNovember
Peak season for travelFebruary
Flight distance3,393.5km
Popular airlineAmerican Airlines

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