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$137+ Cheap flights from Knoxville to Portland (TYS - PDX)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 6/19. Fares are subject to change and may not be available on all flights or dates of travel.
TYS — PDX
May 19 — May 261
Tue 5/19
Tue 5/26
1 adult, Economy
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Cheap flight deals from Knoxville to Portland

Cheapest flights from Knoxville to Portland
Explore the most affordable flight options available from Knoxville to Portland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 19, 2026.

This Frontier deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/234:28 pm
TYS
-
PDX
1 stop21h 35m
Frontier
Sat 5/212:27 pm
PDX
-
TYS
1 stop24h 06m
Frontier
Deal found 4/16$226
This CheapOair deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/208:32 pm
TYS
-
PDX
1 stop23h 25m
Frontier
Tue 8/45:42 pm
PDX
-
TYS
1 stop22h 55m
Frontier
Deal found 4/14$366
This United Airlines deal was found by Cheapflights users on 4/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/127:00 am
TYS
-
PDX
1 stop7h 37m
United Airlines
Tue 5/197:00 am
PDX
-
TYS
1 stop8h 11m
United Airlines
Deal found 4/15$375
This American Airlines deal was found by Cheapflights users on 4/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/105:33 pm
TYS
-
PDX
1 stop8h 18m
American Airlines
Mon 6/1512:40 am
PDX
-
TYS
1 stop7h 33m
American Airlines
Deal found 4/15$389
This American Airlines deal was found by Cheapflights users on 4/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/123:58 pm
TYS
-
PDX
2 stops9h 49m
American Airlines
Tue 5/191:52 pm
PDX
-
TYS
1 stop7h 04m
American Airlines
Deal found 4/15$400
This Kiwi.com deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/241:02 pm
TYS
-
PDX
2 stops27h 46m
Multiple Airlines
Wed 7/85:42 pm
PDX
-
TYS
1 stop17h 09m
Multiple Airlines
Deal found 4/14$404
This American Airlines deal was found by Cheapflights users on 4/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/126:00 am
TYS
-
PDX
1 stop8h 01m
American Airlines
Tue 5/1211:40 pm
PDX
-
TYS
1 stop9h 50m
American Airlines
Deal found 4/15$405
This American Airlines deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/25:33 pm
TYS
-
PDX
1 stop10h 17m
American Airlines
Tue 6/239:47 pm
PDX
-
TYS
1 stop9h 49m
American Airlines
Deal found 4/14$407
This United Airlines deal was found by Cheapflights users on 4/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/116:01 pm
TYS
-
PDX
1 stop8h 54m
United Airlines
Tue 5/195:00 am
PDX
-
TYS
1 stop7h 07m
United Airlines
Deal found 4/15$408
This American Airlines deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/16:13 am
TYS
-
PDX
1 stop8h 37m
American Airlines
Sat 9/1211:55 am
PDX
-
TYS
1 stop8h 23m
American Airlines
Deal found 4/14$416
This American Airlines deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/245:33 pm
TYS
-
PDX
1 stop10h 17m
American Airlines
Wed 7/811:54 am
PDX
-
TYS
1 stop8h 58m
American Airlines
Deal found 4/14$417

Find flight deals from Knoxville to Portland

Discover tips and strategies to find the most affordable flight options for your journey from Knoxville (TYS) to Portland (PDX). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated April 19, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$375
(United Airlines)

One-way from

$137
(CheapOair)

Popular in

December

Cheapest in

August

Average price

$463
Provider with most accurate pricing for Knoxville McGhee Tyson-Portland flight deals.
Search Deals
Provider most trusted by Cheapflights users for Knoxville McGhee Tyson-Portland flights.
Search Deals
From Knoxville McGhee Tyson to Portland
Search Deals
One-way flight from Knoxville McGhee Tyson to Portland
Search Deals
Highest demand for flights based on searches. 10% potential increase in price ($57 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($14 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Knoxville to Portland that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 19, 2026.
Use the filters below to find and compare flights from Knoxville to Portland that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

KnoxvillePortland

TYS - PDX

TYSPDX

Knoxville McGhee Tyson

Mon 5/11

6:01 pm-11:55 pm

1 stop8h 54m

Portland

Tue 5/19

5:00 am-3:07 pm

1 stop7h 07m

$408

KnoxvillePortland

TYS - PDX

TYSPDX

Knoxville McGhee Tyson

Sat 9/12

1:55 pm-6:25 pm

1 stop7h 30m

Portland

Wed 9/16

5:50 am-6:55 pm

2 stops10h 05m

$482

KnoxvillePortland

TYS - PDX

TYSPDX

Knoxville McGhee Tyson

Tue 9/29

1:55 pm-10:20 pm

2 stops11h 25m

Portland

Sat 10/3

6:25 pm-11:55 am

2 stops14h 30m

$513

KnoxvillePortland

TYS - PDX

TYSPDX

Knoxville McGhee Tyson

Thu 7/9

3:54 pm-9:18 pm

1 stop8h 24m

Portland

Thu 7/23

10:55 pm-9:36 am

1 stop7h 41m

$518

KnoxvillePortland

TYS - PDX

TYSPDX

Knoxville McGhee Tyson

Tue 9/1

6:30 am-11:35 am

1 stop8h 05m

Portland

Sat 9/12

7:13 pm-10:36 am

2 stops12h 23m

$531

KnoxvillePortland

TYS - PDX

TYSPDX

Knoxville McGhee Tyson

Sat 8/22

8:48 am-8:50 pm

2 stops15h 02m

Portland

Tue 8/25

8:29 am-8:48 pm

1 stop9h 19m

$531

KnoxvillePortland

TYS - PDX

TYSPDX

Knoxville McGhee Tyson

Sat 8/22

1:53 pm-7:50 pm

1 stop8h 57m

Portland

Tue 8/25

10:37 am-9:53 pm

1 stop8h 16m

$567

KnoxvillePortland

TYS - PDX

TYSPDX

Knoxville McGhee Tyson

Wed 6/24

5:45 am-3:56 pm

2 stops13h 11m

Portland

Wed 7/8

11:40 pm-9:33 am

1 stop6h 53m

$572
Cheapest one-way

KnoxvillePortland

TYS - PDX

TYSPDX

Knoxville McGhee Tyson

Fri 5/22

8:19 pm-4:46 pm

1 stop23h 27m

$222

KnoxvillePortland

TYS - PDX

TYSPDX

Knoxville McGhee Tyson

Sat 5/23

12:20 pm-9:45 pm

2 stops12h 25m

$244

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/15

Showing 1-10 of 18 resultsSorted by cheapest first
1
2

Compare providers for flights from Knoxville to Portland

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Knoxville to Portland in April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Knoxville-Portland flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Knoxville-Portland flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Knoxville-Portland flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Knoxville-Portland flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Knoxville-Portland flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Knoxville to Portland

Have a flexible travel schedule? Discover the best time to fly to Portland from Knoxville with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

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

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

Use this chart to determine the optimal time to book a round-trip flight from Knoxville to Portland. Price data was last updated on April 17, 2026.

Booking 38 days in advance of your planned departure date is, on average, the best time to get cheap flights from Knoxville to Portland. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Knoxville to Portland?

Currently, August is the cheapest month in which you can book a flight from Knoxville to Portland (average of $321). Flying from Knoxville to Portland in December is currently the most expensive (average of $622). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

How much does it cost to fly round-trip from Knoxville to Portland?

Reviews of airlines servicing Portland

Get insights into the airlines that provide service to Portland. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Portland. Reviews last updated April 19, 2026.
Get a feel of what it's like to fly with Delta,United Airlines, andAmerican Airlines from Knoxville to Portland by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,422 reviews

Comfort

7.9

Crew

8.5

Boarding

8.1

Entertainment

7.8

Overall

7.9

Food

7.2

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,422 reviews
Delta
7.9
Good
8,422 reviews

Comfort

7.9

Crew

8.5

Boarding

8.1

Entertainment

7.8

Overall

7.9

Food

7.2

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
United Airlines
7.4
Good
9,604 reviews
Delta
7.9
Good
8,422 reviews

Comfort

7.9

Crew

8.5

Boarding

8.1

Entertainment

7.8

Overall

7.9

Food

7.2

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
American Airlines
7.1
Good
11,620 reviews
Delta
7.9
Good
8,422 reviews

Comfort

7.9

Crew

8.5

Boarding

8.1

Entertainment

7.8

Overall

7.9

Food

7.2

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Related info for your journey

Find useful and relevant information for your journey from Knoxville to Portland. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Knoxville to Portland?

    There are many flights that can get you from Knoxville to Portland in 7h 30m. Fly via United Airlines, Southwest, or Delta to get the fastest option. Airlines will cover a distance of 2107 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines flying from Knoxville to Portland round-trip?

    Delta, at $130, was found to be the cheapest airline from Knoxville to Portland.Alternate airlines to your destination round-trip include American Airlines and United Airlines. Users have found that Delta is 72% cheaper than the other options available to this destination.

  • What are the cheapest airlines to fly from Knoxville to Portland one-way?

    For one-way options, check prices for American Airlines. According to our data, you can fly for as low as $124. Users have also found prices from $152 and $269 on United Airlines and Delta, respectively.

  • Can I find deals for flights from Knoxville to Portland that include hotel bookings?

    Yes. In addition to deals on Knoxville to Portland flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Knoxville to Portland?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Knoxville to Portland.

  • Can I find deals for business class flights from Knoxville to Portland?

    Yes. Cheapflights offers flight deals from Knoxville to Portland by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Knoxville to Portland?

    Currently, August is the cheapest month in which you can book a flight from Knoxville to Portland (average of $321). Flying from Knoxville to Portland in December is currently the most expensive (average of $622). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Portland?

Book flights to Portland if you plan to visit one of these locations
Beaverton
Seaside
Vancouver
Lincoln City
Longview
Lake Oswego
Hillsboro
Clackamas
Troutdale
Cannon Beach
Long Beach
McMinnville
Tigard
The Dalles
Wilsonville
Depoe Bay
Stevenson
Tillamook
Astoria
Pacific City

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 3 airlines flying from Knoxville to Portland

Discover the top 3 airlines that operate flights from Knoxville to Portland. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 19, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$130Average$373FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$279Average$426FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$328Average$536FlexibilityNo cancel feeOn-time69%

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