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$238+ 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 12/29. Fares are subject to change and may not be available on all flights or dates of travel.
TYS — PDX
Jan 25 — Feb 11
Sun 1/25
Sun 2/1
1 adult, Economy
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Cheapflights Tip: The best prices from Knoxville McGhee Tyson to Portland are usually found in August or February, booked 38 days in advance, depart on a Wednesday or Friday and return on a Tuesday

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 December 26, 2025.

This United Airlines deal was found by Cheapflights users on 12/25. 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 12/302:00 pmTYS - PDX
1 stop9h 48mUnited Airlines
Thu 1/15:00 amPDX - TYS
1 stop7h 00mUnited Airlines
Deal found 12/25$573
This Kiwi.com deal was found by Cheapflights users on 12/25. 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 12/304:46 pmTYS - PDX
2 stops25h 14mFrontier
Sun 1/412:47 pmPDX - TYS
1 stop24h 04mFrontier
Deal found 12/25$587
This Kiwi.com deal was found by Cheapflights users on 12/25. 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 12/3012:21 pmTYS - PDX
1 stop29h 39mMultiple Airlines
Sun 1/412:47 pmPDX - TYS
1 stop24h 04mMultiple Airlines
Deal found 12/25$681
This United Airlines deal was found by Cheapflights users on 12/25. 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 12/302:00 pmTYS - PDX
2 stops11h 40mUnited Airlines
Sun 1/411:55 pmPDX - TYS
2 stops11h 53mUnited Airlines
Deal found 12/25$820

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 December 26, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$359
(United Airlines)

One-way from

$238
(Mytrip)

Popular in

December

Cheapest in

August

Average price

$693
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.
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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. 15% potential increase in price ($81 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($22 potential savings vs. average RT price).
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Average for round-trip flights in December 2025
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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 December 26, 2025.
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

Tue 3/3

4:30 pm-11:29 pm

1 stop9h 59m

Portland

Tue 3/10

11:59 pm-10:10 am

1 stop7h 11m

$359

KnoxvillePortland

TYS - PDX

TYSPDX

Knoxville McGhee Tyson

Tue 3/3

7:05 am-12:22 pm

1 stop8h 17m

Portland

Wed 3/11

11:00 am-8:47 pm

1 stop6h 47m

$359

KnoxvillePortland

TYS - PDX

TYSPDX

Knoxville McGhee Tyson

Tue 3/3

10:53 am-3:27 pm

1 stop7h 34m

Portland

Tue 3/10

11:00 am-8:47 pm

1 stop6h 47m

$359

KnoxvillePortland

TYS - PDX

TYSPDX

Knoxville McGhee Tyson

Wed 3/4

6:45 am-1:44 pm

2 stops9h 59m

Portland

Wed 3/11

11:00 am-8:47 pm

1 stop6h 47m

$364

KnoxvillePortland

TYS - PDX

TYSPDX

Knoxville McGhee Tyson

Sat 1/24

6:59 am-12:18 pm

1 stop8h 19m

Portland

Sat 1/31

10:47 am-8:52 pm

1 stop7h 05m

$367

KnoxvillePortland

TYS - PDX

TYSPDX

Knoxville McGhee Tyson

Tue 3/3

12:20 pm-8:52 pm

2 stops11h 32m

Portland

Wed 3/11

11:46 am-11:40 pm

2 stops8h 54m

$369

KnoxvillePortland

TYS - PDX

TYSPDX

Knoxville McGhee Tyson

Mon 2/23

12:20 pm-6:09 pm

1 stop8h 49m

Portland

Sat 2/28

10:22 pm-8:41 am

1 stop7h 19m

$376

KnoxvillePortland

TYS - PDX

TYSPDX

Knoxville McGhee Tyson

Mon 12/29

4:46 pm-11:43 am

1 stop21h 57m

$238

KnoxvillePortland

TYS - PDX

TYSPDX

Knoxville McGhee Tyson

Mon 12/29

2:46 pm-9:19 pm

1 stop9h 33m

$384

KnoxvillePortland

TYS - PDX

TYSPDX

Knoxville McGhee Tyson

Tue 12/30

4:46 pm-3:00 pm

2 stops25h 14m

$393

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/24

Showing 1-10 of 12 results
1
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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 December.
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 December 19, 2025.

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 $300). 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.

What is the cheapest time of day to fly from TYS to PDX?

Find hourly flight availability from Knoxville to Portland. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 26, 2025.

A simple way to save on the total cost of your ticket is to fly from Knoxville to Portland in the evening. If you’re flexible enough to do this you can expect to save up to 17% on your trip compared to booking a flight in the afternoon.

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

Use this chart to determine the cheapest time to fly round-trip from Knoxville to Portland. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Knoxville to Portland flight should consider departing on Wednesday evenings when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

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 December 26, 2025.
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
8.0
Very good
11,534 reviews

Comfort

7.8

Crew

8.5

Overall

8.0

Food

7.1

Entertainment

7.0

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Georgana,Dec 2025

ORD - PDX

Very cordial grew. Thank you. However, crying baby issues and no ear plugs available.
Alaska Airlines
8.0
Very good
11,534 reviews
Alaska Airlines
8.0
Very good
11,534 reviews

Comfort

7.8

Crew

8.5

Overall

8.0

Food

7.1

Entertainment

7.0

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Georgana,Dec 2025

ORD - PDX

Very cordial grew. Thank you. However, crying baby issues and no ear plugs available.
Delta
7.9
Good
8,013 reviews
Alaska Airlines
8.0
Very good
11,534 reviews

Comfort

7.8

Crew

8.5

Overall

8.0

Food

7.1

Entertainment

7.0

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Georgana,Dec 2025

ORD - PDX

Very cordial grew. Thank you. However, crying baby issues and no ear plugs available.
United Airlines
7.4
Good
9,115 reviews
Alaska Airlines
8.0
Very good
11,534 reviews

Comfort

7.8

Crew

8.5

Overall

8.0

Food

7.1

Entertainment

7.0

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Georgana,Dec 2025

ORD - PDX

Very cordial grew. Thank you. However, crying baby issues and no ear plugs available.
American Airlines
7.2
Good
11,064 reviews
Alaska Airlines
8.0
Very good
11,534 reviews

Comfort

7.8

Crew

8.5

Overall

8.0

Food

7.1

Entertainment

7.0

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Georgana,Dec 2025

ORD - PDX

Very cordial grew. Thank you. However, crying baby issues and no ear plugs available.

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 8h 17m. 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 $300). 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
McMinnville
Hillsboro
Troutdale
Cannon Beach
Long Beach
Tigard
The Dalles
Depoe Bay
Stevenson
Wilsonville
Tillamook
Pacific City
Gresham

Browse thousands of different options on Cheapflights for your next trip

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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 December 26, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$250Average$373FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$279Average$409FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$345Average$556FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$551Average$688FlexibilityNo cancel feeOn-time75%

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