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$168+ 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 3/18. Fares are subject to change and may not be available on all flights or dates of travel.
TYS — PDX
Feb 13 — Feb 201
Fri 2/13
Fri 2/20
1 adult, Economy
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Cheap 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 January 14, 2026.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$363
(United Airlines)

One-way from

$168
(Kiwi.com)

Popular in

December

Cheapest in

August

Average price

$488
Provider with most accurate pricing for Knoxville McGhee Tyson-Portland flight deals.
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Provider most trusted by Cheapflights users for Knoxville McGhee Tyson-Portland flights.
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From Knoxville McGhee Tyson to Portland
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One-way flight from Knoxville McGhee Tyson to Portland
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Highest demand for flights based on searches. 13% potential increase in price ($69 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($16 potential savings vs. average RT price).
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Average for round-trip flights in January 2026
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Find 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 January 14, 2026.

This Kiwi.com deal was found by Cheapflights users on 1/11. 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.
Tue 3/174:56 pm
TYS
-
PDX
2 stops45h 13m
Multiple Airlines
Wed 3/259:53 am
PDX
-
TYS
1 stop27h 41m
Multiple Airlines
Deal found 1/11$353
This United Airlines deal was found by Cheapflights users on 1/13. 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 2/31:59 pm
TYS
-
PDX
1 stop7h 57m
United Airlines
Sat 2/712:57 pm
PDX
-
TYS
1 stop7h 47m
United Airlines
Deal found 1/13$363
This American Airlines deal was found by Cheapflights users on 1/11. 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 2/245:05 am
TYS
-
PDX
1 stop9h 02m
American Airlines
Mon 3/95:40 am
PDX
-
TYS
1 stop8h 51m
American Airlines
Deal found 1/11$376
This American Airlines deal was found by Cheapflights users on 1/12. 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.
Mon 2/94:41 pm
TYS
-
PDX
1 stop8h 30m
American Airlines
Mon 2/1611:40 pm
PDX
-
TYS
1 stop8h 51m
American Airlines
Deal found 1/12$385
This American Airlines deal was found by Cheapflights users on 1/13. 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 2/36:00 am
TYS
-
PDX
2 stops11h 48m
American Airlines
Sat 2/76:00 am
PDX
-
TYS
2 stops9h 46m
American Airlines
Deal found 1/13$394
This Delta deal was found by Cheapflights users on 1/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/57:30 am
TYS
-
PDX
2 stops13h 05m
Delta
Mon 2/97:37 pm
PDX
-
TYS
2 stops13h 36m
Delta
Deal found 1/11$396

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 January 14, 2026.
Use the filters below to find and compare flights from Knoxville to Portland that are best for you.

Fly from

Knoxville

Fly to

Portland

Route

Depart

Return

Price

KnoxvillePortland

TYS - PDX

TYSPDX

Knoxville McGhee Tyson

Mon 2/23

6:21 pm-11:27 pm

1 stop8h 06m

Portland

Sat 2/28

5:40 am-12:28 am

1 stop15h 48m

$363

KnoxvillePortland

TYS - PDX

TYSPDX

Knoxville McGhee Tyson

Tue 2/3

1:59 pm-6:56 pm

1 stop7h 57m

Portland

Sat 2/7

12:57 pm-11:44 pm

1 stop7h 47m

$363

KnoxvillePortland

TYS - PDX

TYSPDX

Knoxville McGhee Tyson

Tue 5/5

5:06 pm-11:41 pm

1 stop9h 35m

Portland

Fri 5/8

12:59 am-6:04 pm

1 stop14h 05m

$363

KnoxvillePortland

TYS - PDX

TYSPDX

Knoxville McGhee Tyson

Tue 3/3

6:45 am-11:55 am

1 stop8h 10m

Portland

Wed 3/11

5:05 am-3:02 pm

1 stop6h 57m

$376

KnoxvillePortland

TYS - PDX

TYSPDX

Knoxville McGhee Tyson

Mon 2/9

4:41 pm-10:11 pm

1 stop8h 30m

Portland

Mon 2/16

9:44 pm-9:53 am

1 stop9h 09m

$385

KnoxvillePortland

TYS - PDX

TYSPDX

Knoxville McGhee Tyson

Thu 2/5

6:45 am-11:57 am

1 stop8h 12m

Portland

Mon 2/9

12:59 pm-11:44 pm

1 stop7h 45m

$385

KnoxvillePortland

TYS - PDX

TYSPDX

Knoxville McGhee Tyson

Tue 3/24

7:00 am-11:51 am

1 stop7h 51m

Portland

Tue 3/31

5:00 am-3:06 pm

1 stop7h 06m

$385

KnoxvillePortland

TYS - PDX

TYSPDX

Knoxville McGhee Tyson

Thu 2/26

2:49 pm-8:44 pm

1 stop8h 55m

Portland

Mon 3/2

11:35 pm-11:57 am

2 stops9h 22m

$390

KnoxvillePortland

TYS - PDX

TYSPDX

Knoxville McGhee Tyson

Thu 3/5

6:21 pm-11:16 pm

1 stop7h 55m

Portland

Tue 3/10

6:40 am-5:31 pm

1 stop7h 51m

$392

KnoxvillePortland

TYS - PDX

TYSPDX

Knoxville McGhee Tyson

Wed 3/18

10:00 am-8:58 am

1 stop25h 58m

$168

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/13

Showing 1-10 of 18 results
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 January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice 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 eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Knoxville-Portland flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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 January 9, 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 $150). Flying from Knoxville to Portland in January is currently the most expensive (average of $299). 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.

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 January 14, 2026.
Get a feel of what it's like to fly with Alaska Airlines, Delta, and United 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.
Alaska Airlines
7.9
Good
11,701 reviews

Food

7.1

Comfort

7.8

Entertainment

7.0

Boarding

8.1

Overall

7.9

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
Alaska Airlines
7.9
Good
11,701 reviews
Alaska Airlines
7.9
Good
11,701 reviews

Food

7.1

Comfort

7.8

Entertainment

7.0

Boarding

8.1

Overall

7.9

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
Delta
7.9
Good
8,040 reviews
Alaska Airlines
7.9
Good
11,701 reviews

Food

7.1

Comfort

7.8

Entertainment

7.0

Boarding

8.1

Overall

7.9

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
United Airlines
7.4
Good
9,156 reviews
Alaska Airlines
7.9
Good
11,701 reviews

Food

7.1

Comfort

7.8

Entertainment

7.0

Boarding

8.1

Overall

7.9

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
American Airlines
7.2
Good
11,119 reviews
Alaska Airlines
7.9
Good
11,701 reviews

Food

7.1

Comfort

7.8

Entertainment

7.0

Boarding

8.1

Overall

7.9

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.

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 57m. Fly via American Airlines or United Airlines 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 $250, 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 44% 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 $165 and $218 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 $150). Flying from Knoxville to Portland in January is currently the most expensive (average of $299). 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
Vancouver
Seaside
Clackamas
Lincoln City
Longview
Lake Oswego
Beaverton
Hillsboro
Troutdale
Cannon Beach
Long Beach
McMinnville
Tigard
The Dalles
Depoe Bay
Stevenson
Wilsonville
Tillamook
Pacific City
Gresham

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Top 4 airlines flying from Knoxville to Portland

Discover the top 4 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 January 14, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$250Average$368FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$279Average$411FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$328Average$542FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$551Average$688FlexibilityNo cancel feeOn-time75%

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