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Cheap flights from Portland to Knoxville from $150

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Portland to Knoxville departing on 3/15. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Portland to Knoxville

Cheap round-trip flights

These are some of the best round-trip flight deals from Portland to Knoxville that have been recently found on momondo from popular airlines, departing in the coming months.
11:59 pm - 11:34 amPDX-TYS
8h 35m1 stop
3:09 pm - 9:33 pmTYS-PDX
9h 24m1 stop
$249American Airlines
Find Deal
Tue, Apr 15 - Wed, Apr 23
12:50 am - 1:48 pmPDX-TYS
9h 58m2 stops
5:30 am - 11:23 amTYS-PDX
8h 53m1 stop
$254Delta
Find Deal
Mon, Apr 14 - Wed, Apr 23
11:52 pm - 12:04 pmPDX-TYS
9h 12m2 stops
12:44 pm - 7:54 pmTYS-PDX
10h 10m2 stops
$259American Airlines
Find Deal
Tue, Apr 15 - Wed, Apr 23
7:32 pm - 10:52 pmPDX-TYS
24h 20m2 stops
8:00 am - 6:37 pmTYS-PDX
13h 37m2 stops
Fri, Mar 7 - Tue, Mar 11
9:45 pm - 9:13 amPDX-TYS
8h 28m1 stop
6:05 pm - 11:38 pmTYS-PDX
8h 33m2 stops
$344Delta
Find Deal
Mon, Jul 14 - Fri, Jul 25
7:00 am - 5:50 pmPDX-TYS
7h 50m1 stop
6:50 pm - 6:44 pmTYS-PDX
26h 54m1 stop
$569Alaska Airlines
Find Deal
Tue, Mar 4 - Fri, Mar 7
5:45 am - 8:50 pmPDX-TYS
12h 05m2 stops
6:50 pm - 6:44 pmTYS-PDX
26h 54m1 stop
$574Alaska Airlines
Find Deal
Tue, Mar 4 - Fri, Mar 7
11:59 pm - 10:07 amPDX-TYS
7h 08m1 stop
7:00 am - 6:35 pmTYS-PDX
14h 35m2 stops
$575United Airlines
Find Deal
Sat, Jul 12 - Wed, Jul 23
11:59 pm - 10:40 pmPDX-TYS
19h 41m1 stop
7:25 pm - 9:42 amTYS-PDX
17h 17m2 stops
$589United Airlines
Find Deal
Fri, Jul 18 - Sat, Jul 26
6:32 am - 3:43 pmPDX-TYS
6h 11m1 stop
4:43 pm - 12:37 amTYS-PDX
10h 54m1 stop
$856Frontier
Find Deal
Sun, Mar 23 - Sun, Mar 30

American Airlines flights from Portland to Knoxville

Our best American Airlines deals on Portland to Knoxville flight tickets
American Airlines
Apr 15
PDX11:59 pmPortland
8h 35m
1 stop
TYS11:34 amKnoxville McGhee Tyson
Apr 23
TYS3:09 pmKnoxville McGhee Tyson
9h 24m
1 stop
PDX9:33 pmPortland
American Airlines
Apr 15
PDX11:52 pmPortland
9h 12m
2 stops
TYS12:04 pmKnoxville McGhee Tyson
Apr 23
TYS12:44 pmKnoxville McGhee Tyson
10h 10m
2 stops
PDX7:54 pmPortland
American Airlines
Mar 14
PDX10:01 pmPortland
7h 58m
1 stop
TYS8:59 amKnoxville McGhee Tyson
Mar 18
TYS6:21 pmKnoxville McGhee Tyson
7h 39m
1 stop
PDX11:00 pmPortland

Delta flights from Portland to Knoxville

Our best Delta deals on Portland to Knoxville flight tickets
Delta
Apr 14
PDX12:50 amPortland
9h 58m
2 stops
TYS1:48 pmKnoxville McGhee Tyson
Apr 23
TYS5:30 amKnoxville McGhee Tyson
8h 53m
1 stop
PDX11:23 amPortland
Delta
Jul 14
PDX9:45 pmPortland
8h 28m
1 stop
TYS9:13 amKnoxville McGhee Tyson
Jul 25
TYS6:05 pmKnoxville McGhee Tyson
8h 33m
2 stops
PDX11:38 pmPortland
Delta
Mar 14
PDX7:29 pmPortland
11h 10m
2 stops
TYS9:39 amKnoxville McGhee Tyson
Mar 18
TYS5:00 pmKnoxville McGhee Tyson
9h 59m
2 stops
PDX11:59 pmPortland

See travel insights to Knoxville from

How to get the cheapest flight ticket from Portland to Knoxville

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Knoxville?

The month of September is, on average, the cheapest month to fly to Knoxville from Portland, with most prices found around $388. If you aren’t able to travel during the month of September, then book flights to Knoxville from Portland during January instead. Flights to Knoxville in January, while not as cheap as those in September, still average around $410.

What is the cheapest day to depart on your flight to Knoxville?

The cheapest day to depart from Portland to Knoxville is on a Tuesday. Travelers who choose to depart for Knoxville on a Tuesday will often find tickets for as low as $442. When flying out on a Monday, the most expensive travel day of the week, you can expect to see flight prices from Portland to Knoxville for around $583.

What is the cheapest time of day to depart on your flight to Knoxville?

At noon is the cheapest time of day to fly from Portland to Knoxville when you can find flight prices for as low as $460. Flying to Knoxville at noon is an ideal time because this is during off-peak travel hours. In contrast, the most expensive time of day to depart to Knoxville is in the evening when prices are around $478.

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

You are more likely to see cheaper flights to Knoxville from Portland when booking 14 weeks ahead of your departure date. In general, you can expect to find flights to Knoxville for around $492 when searching 14 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Knoxville from Portland for as low as $404 on momondo.

How have Portland to Knoxville flight prices changed over time?

As of February 2025, prices for Portland to Knoxville flights are approximately 343% more expensive when compared to flights at the same time last year.

When to book flights from Portland to Knoxville

Are you open to changing your travel dates? Check out the ideal times to fly from Portland to Knoxville according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Portland to Knoxville (PDX to TYS) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Portland to Knoxville

Best Price Found

$150

Fastest flight time

6h 11m

Direct flights

None

Airports in Knoxville

1 airport
The best one-way flight to Knoxville from Portland in the past 72 hours is $150. The best round-trip flight deal from Portland to Knoxville found on momondo in the last 72 hours is $249.
The fastest flight from Portland to Knoxville takes 6h 11m
There are no direct flights from Portland to Knoxville. Popular non-direct route for this connection is Portland Airport - Knoxville McGhee Tyson Airport.
There is 1 airport near Knoxville: Knoxville McGhee Tyson (TYS)

  • How far is Portland to Knoxville McGhee Tyson by plane?

    Portland and Knoxville McGhee Tyson are 2108.9 mi apart from one another. A reasonable flight in good conditions will take 6h 11m.

  • When did momondo last update prices for flights from Portland Airport to Knoxville McGhee Tyson Airport?

    Prices for flights from Portland Airport to Knoxville McGhee Tyson Airport were last updated today.

  • How many operators does momondo search for flights from Portland Airport to Knoxville McGhee Tyson Airport?

  • How old do you have to be to fly from Portland Airport to Knoxville McGhee Tyson Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Portland Airport to Knoxville McGhee Tyson Airport.

  • What documentation or ID do you need to fly to Knoxville McGhee Tyson Airport?

    The required travel and health documents for your Knoxville McGhee Tyson Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Knoxville McGhee Tyson Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular airline from Portland to Knoxville?


Best airlines flying from Portland to Knoxville

Compare and see reviews for airlines that fly from Portland to Knoxville with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $168Free CancellationRating
6.0
3,355 reviews
Search Frontier flights
American AirlinesPriceFrom $290Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
DeltaPriceFrom $294Free CancellationRating
8.0
8,219 reviews
Search Delta flights
United AirlinesPriceFrom $308Free CancellationRating
7.4
8,765 reviews
Search United Airlines flights

Traveling to a place near Knoxville?

Book flights to Knoxville if you plan to visit one of these locations
Pigeon Forge
Gatlinburg
Cherokee
Bryson City
Morristown
Corbin
Maryville
Crossville
Murphy
Newport
Oak Ridge
Alcoa
Kodak
Clinton
Lenoir City
Dandridge
Jefferson City
Rockford

Why use momondo?

Why should I use momondo to find a flight deal from Portland to Knoxville?

It is quick and easy to find Portland to Knoxville flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Knoxville that suits you.

Can I find flights from Portland to Knoxville with flexible booking policies on momondo?

Flights from Portland to Knoxville with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Portland to Knoxville?

momondo provides multiple filters to help you find the best flight to Knoxville from Portland. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Portland to Knoxville right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Knoxville, momondo offers a useful price alert feature which will track prices for flights to Knoxville from Portland and alert you when they change.


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