PDX - TYS

$126 Find Cheap Flights from Portland to Knoxville

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Portland to Knoxville departing on 8/26. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to Knoxville

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Portland to Knoxville, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Portland to Knoxville, as well as popular online travel agencies
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Flights Deals

Cheap Flights from Portland to Knoxville (PDX-TYS)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Portland to Knoxville that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Portland to Knoxville

Tue, Aug 26 - Sat, Aug 30
American Airlines Logo
5:34 am - 5:49 pmPDX-TYS
9h 15m1 stop
American Airlines Logo
12:20 pm - 4:47 pmTYS-PDX
7h 27m1 stop
$250American Airlines
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Wed, Sep 3 - Sat, Sep 6
American Airlines Logo
9:56 pm - 9:56 amPDX-TYS
9h 00m1 stop
American Airlines Logo
2:19 pm - 8:37 pmTYS-PDX
9h 18m1 stop
$251American Airlines
Find Deal
Sat, Sep 6 - Tue, Sep 9
Delta Logo
10:57 pm - 1:08 pmPDX-TYS
11h 11m2 stops
Delta Logo
6:36 am - 12:55 pmTYS-PDX
9h 19m2 stops
$261Delta
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Sat, Aug 16 - Thu, Aug 21
Frontier Logo
7:01 pm - 4:29 pmPDX-TYS
18h 28m1 stop
Frontier Logo
8:36 pm - 12:15 amTYS-PDX
6h 39m1 stop
$265Frontier
Find Deal
Tue, Aug 26 - Sat, Aug 30
Delta Logo
10:05 pm - 11:34 amPDX-TYS
10h 29m2 stops
Delta Logo
11:32 am - 7:44 pmTYS-PDX
11h 12m2 stops
$270Delta
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Thu, Sep 11 - Mon, Sep 15
Frontier Logo
6:05 am - 7:50 pmPDX-TYS
10h 45m1 stop
Frontier Logo
8:35 pm - 12:12 amTYS-PDX
6h 37m1 stop
$278Frontier
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Wed, Sep 10 - Mon, Sep 15
 Logo
8:18 pm - 11:08 pmPDX-TYS
23h 50m2 stops
 Logo
8:30 am - 7:23 pmTYS-PDX
13h 53m1 stop
Fri, Sep 12 - Mon, Sep 15
 Logo
12:07 pm - 10:30 pmPDX-TYS
7h 23m1 stop
 Logo
8:30 am - 7:04 pmTYS-PDX
13h 34m1 stop
Sun, Aug 31 - Wed, Sep 3
United Airlines Logo
5:00 am - 2:50 pmPDX-TYS
6h 50m1 stop
United Airlines Logo
7:00 am - 11:49 amTYS-PDX
7h 49m1 stop
$350United Airlines
Find Deal
Sun, Aug 31 - Tue, Sep 9
United Airlines Logo
5:00 am - 2:50 pmPDX-TYS
6h 50m1 stop
United Airlines Logo
7:00 am - 8:03 pmTYS-PDX
16h 03m2 stops
$355United Airlines
Find Deal
Booking Insights

KAYAK's insights & trends for Portland to Knoxville flights

Get data-powered insights and trends into flights from Portland to Knoxville to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Portland to Knoxville?

The average price of all round-trip flights from Portland to Knoxville clicked on KAYAK for each day over the last 12 months.

Your flight ticket price will generally be cheaper if you fly to Knoxville on a Tuesday and more expensive on a Monday. On your return trip to Portland, you should consider flying back on a Wednesday, and avoid Sundays for better deals.

What is the cheapest month to fly from Portland to Knoxville?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Portland to Knoxville, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Portland to Knoxville is February, where tickets cost $380 (return) on average. On the other hand, the most expensive months are December and March, where the average cost of round-trip tickets is $614 and $543 respectively.

How far in advance should I book a flight from Portland to Knoxville?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Portland to Knoxville, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Portland to Knoxville, you should book around 3 weeks before departure, which saves you about 20% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 5 weeks before departure.

Good to know

Low seasonFebruary
Cheapest flight$126
Best time to beat the crowds with an average 19% drop in price.
Most popular time to fly and prices are also 0% lower on average.
Flight from Portland to Knoxville

When to book flights from Portland to Knoxville

Are your dates flexible? Find out the best times to travel from Portland to Knoxville based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Portland to Knoxville

  • What is the cheapest flight from Portland to Knoxville?

    In the last 3 days, the lowest price for a flight from Portland to Knoxville was $126 for a one-way ticket and $250 for a round-trip.

  • Do I need a passport to fly between Portland and Knoxville?

    No

  • Which airports will I be using when flying from Portland to Knoxville?

    Portland airport is called Portland and the only airport in Knoxville is Knoxville McGhee Tyson.

  • Which aircraft models fly most regularly from Portland to Knoxville?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Portland to Knoxville?

    oneworld, Star Alliance, and SkyTeam are the airline alliances operating flights between Portland and Knoxville, with oneworld being the most commonly used for this route.

  • Which is the best airline for flights from Portland to Knoxville, Delta or United Airlines?

    The two airlines most popular with KAYAK users for flights from Portland to Knoxville are Delta and United Airlines. With an average price for the route of $452 and an overall rating of 8.0, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $519 and an overall rating of 7.4.

  • How does KAYAK find such low prices on flights from Portland to Knoxville?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Portland to Knoxville.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Portland to Knoxville?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Knoxville from Portland is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Portland to Knoxville?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Knoxville with an airline and back to Portland with another airline. Booking your flights between Portland and TYS can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Portland to Knoxville?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Knoxville from Portland up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 4 airlines serving from Portland to Knoxville

 
See real verified KAYAK customer reviews for airlines flying from Portland to Knoxville. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Portland to Knoxville? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
DeltaOverall score based on 7980 reviews
8.5Crew
7.3Food
8.2Boarding
7.9Comfort
7.9Entertainment
Airline reviews

Delayed and took off even later than the scheduled delay time

8.0 ExcellentAnonymous, Jul 2025DTW - SEA
Read more Delta reviews

Delayed and took off even later than the scheduled delay time

For a 69 year old with health problems I had the worse experience, no wheelchair when I entered a lady told me to sit and wait while a gentleman told me I had to walk to the Delta station, which I did. I had a carry on and a bag, and I was traveling with my service dog, which was on his carrier and the lady charged me for my carry on luggage, beside all the waiting cause of the delay, I had to walk to get my luggage cause no wheelchair showed up, I am so disappointed. I will get in touch with the company. I got home at 3:00 am, not good for my health situation.

Great experience on Delta. Staff from baggage check to flight attendants were very courteous and professional. My only issue was a personal preference for pretzels instead of the chips and cookies that were offered.

There was no problems, just a little uncomfortable with seats that do not lay back a little

Always good but we must do something about people in rows ahead of you that don't put their seats back up when they are suppose to. And It's rough to not be able to even lean over to get something out of my purse.

Flight was delayed, 30+ bags had to be gate checked. Crew were very friendly!

Everything was good until we were boarding our connection flight in Atlanta, we were told to gate check our carry-on, but when we got inside the plane, there was plenty of room in the overhead.

Did not know my son and I had different seating arrangements. He was fine, but it was disappointing.

Flight was canceled, and no effort was made to help with rebooking, no hotel vouchers, no car transportation and minimal food voucher and most places for food were closed by the time the voucher was given. Waited for 3 hours for bags. Simply the worst travel experience I have ever had

Food was surprisingly good but the WiFi was not great

Was on time until within 1 hour of flight-how does that happen? Staff very friendly.

Weather delay in Chicago?. No sense of urgency to make connection in Chicago for our connecting flight that wasn't delayed. Connection was missed.

Our flight was understandably diverted to a small regional airport in Laramie, Wyoming due to weather conditions, which I fully recognize and appreciate. However, the low rating stems from the experience that followed: passengers remained on board for over an hour without the option to deplane and stretch, despite the aircraft being stationary. Although the pilot opened the cabin door, only he was permitted to exit. Meanwhile, passengers grew increasingly uncomfortable as warm summer air entered the cabin through the open door, and being in the second row meant we were impacted immediately. While the flight attendants made efforts to keep everyone at ease, I believe allowing passengers to deplane briefly, given the extended delay, would have significantly improved the overall experience.

I never flew. Flight was canceled. DIA worst airport in the country. Avoid at all costs.

I learned that seating towards the end of plane that a line forms for the restroom and people use your chair as a hand railing, bumping your seat consistently. I was seated in the aisle. I think that next time if I am towards the back row I would want to sit in the middle or window seat.

United sent me a mileage plus number last year but that number is invalid so I can’t use it to check into flights or collect mileage. There is human to speak about the problem, only computers who keep asking me if I am using the correct email. It’s so frustrating and I cannot resolve it.

It was delayed instead of departing at 9:20pm, we departed at 11pm… putting us in Columbus after 2am! It was awful. Had I known about the delay, I could have spent some time in the United Lounge… I was starving because I started my journey in Budapest… so I was exhausted and hungry. Plus I had to make new arrangements to be picked up at the airport in Columbus, instead of midnight it was 2:30 am after getting luggage and out of airport. Not feasible. I would have just stayed in Chicago for the night and gotten a morning flight.

Not a great experience. We paid for the upgrade for premium economy seats and seated ourselves in very comfortable seats. Someone came along with the same seat on their boarding pass. The aircraft had been changed and as a result we were booted out and sent further back to small uncomfortable seats. After complaining we were moved to emergency row seats, which gave us more leg room but the seats don’t recline. For people in our 70’s we found having to sit upright from California to NJ very uncomfortable. Not sure why they chose to move senior citizens instead of the two people that were allowed to take the more comfortable seats. Not happy.

I liked the choice of lemon ginger tea. I think stewardesses can be more considerate of older people needs.

It was great, I’m very grateful for the pilots and crew flight attendants for everything.

Very poor delay in dfw was really bad n long

Our flight was 1.5 hours delayed. There was no weather for the inbound flight, so I don't understand why. This meant a VERY late arrival and only a quick nap before my morning flight.

Because of rescheduling, they had to put me on a flight that didn't go through Dallas

It was very difficult to stretch my knee out and I am very short. I also had a torn tendon in my knee which made it extra uncomfortable anyways. My husband is 6'2" and I can't imagine him flying in that plane.

3 hour weather delay followed by 1 hour (and counting) maintenance delay. UGH!

Couldn’t get the door on the plane to close leading to a nearly 2 hour delay. But, hey at least they didn’t cancel the flight.

Flight was cancelled 3 hrs AFTER etd. Thetefore Missed connection from JFK to New Zealand . No accommodation provided… This cost ne aporox 1000 USD in extra expenses and turned whst should have been a 24 hr trip ftom Boston - New Zealand into a VERY expensive , late 70+ hr nightmare … Complete nonsense!!!

After we'd boarded , they canceled the flight. The crew didn't even know , we just all received text messages. Then after they deplaned us , AA was just like "too bad, go F your self, we sure ain't gonna help you"

The flight got delayed 2.5 hrs due to a maintenance issue that cause a domino effect. American should have spare planes for when something like this happens.

Delayed flight, so I switched fights to SFO to Phoenix , Phoenix to DSM. Excellent service through American Airlines

Boarding in Orlando was not good. Giant mob at the gate, should have been lines.

Decent clean onboard experience. Okay discount airline experience. Unfortunately, any customer service interactions are difficult and unhelpful. There is no service. Also, a premium seat only gets you premium boarding if you line up first. Once they start general boarding you must go to the back of the line. Not very premium

baggage clamed had to wait over a hour and half for all people on my flight it was terrible

The ticketing agents were rude but then we had a great gate agent very nice we had to ride a buss out to where the plane was parked but it was in some back corner of the airport when we got to the plane the captain who was great btw was cleaning the plane because the same rude ticketing agent told them they we not contracted to vacuum the plane. The ride to las Vegas was fine We had a connecting flight to Dallas. The flight was fine but when we arrived in Dallas everyone who flew on any frontier airlines the picked up bags from baggage claim D15 had to wait over a hour for their bags to start we arrived at 11:30pm ish to the gate we didn't leave the baggage clamed till 12:50 am very not happy and i used to fly frontier 4 times a week for work in Denver i will not be using them again

I was 2 hr arrive in the airport and 45 min in the line . After take to my turn . The agent tell me I’m later . I can not board . So my vacation was going to the floor . Just for their bad customer service agent in the airline

Frontier Airlines was AWFUL. I was an hour early for my flight and the lady refused to check me in. I had to purchase a whole new ticket with a different airline.

My flight was canceled I was promised a reginf still not received.

Late, terrible communication, horrible planning of passenger seating until the literal last minute. One of the worst flying experiences of my life. Y'all suck

Both legs of the flight were changed. The day of the flight and length of the trip.

First of all, we never got on the connecting flight to Denver. They delayed our flight for two hours. If we would have gotten on that flight, we would have been stuck in Denver for 13 hours. So we re- routed our flight for a straight through flight to Oklahoma two days later. THEN, they delayed that flight for two hours. After that we were able to finally get on our flight and come home. Frontier Airlines - one of the worst airlines I have ever been on.

Everything you need to know for your flight from Portland to Knoxville

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