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$169+ 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 9/25. Fares are subject to change and may not be available on all flights or dates of travel.
TYS — PDX
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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Cheapflights Tip: The best prices from Knoxville McGhee Tyson to Portland are usually found in February or August, booked 21 days in advance, depart on a Wednesday or Friday and return on a Tuesday

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 June 12, 2025.

Round-trip from

$251
(American Airlines)

One-way from

$169
(Mytrip)

Popular in

December

Cheapest in

February

Average price

$613
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. 11% potential increase in price ($58 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 June 2025
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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 June 12, 2025.

This American Airlines deal was found by Cheapflights users on 6/11. 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.
Wed 8/205:27 pmTYS - PDX
1 stop8h 53mAmerican Airlines
Tue 8/262:05 pmPDX - TYS
1 stop7h 14mAmerican Airlines
Deal found 6/11$251
This Delta deal was found by Cheapflights users on 6/10. 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.
Tue 8/54:02 pmTYS - PDX
1 stop8h 47mDelta
Tue 8/126:00 amPDX - TYS
1 stop8h 19mDelta
Deal found 6/10$271
This Mytrip deal was found by Cheapflights users on 6/10. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/2511:01 amTYS - PDX
1 stop14h 45mMultiple Airlines
Fri 8/18:22 amPDX - TYS
2 stops34h 20mMultiple Airlines
Deal found 6/10$292
This Frontier deal was found by Cheapflights users on 6/10. 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 8/218:36 pmTYS - PDX
1 stop6h 39mFrontier
Thu 8/286:27 amPDX - TYS
1 stop10h 14mFrontier
Deal found 6/10$301
This Mytrip deal was found by Cheapflights users on 6/10. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/256:55 amTYS - PDX
2 stops11h 52mAllegiant Air
Fri 8/18:22 amPDX - TYS
2 stops34h 20mAllegiant Air
Deal found 6/10$359
This United Airlines deal was found by Cheapflights users on 6/10. 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.
Thu 7/37:00 amTYS - PDX
1 stop7h 43mUnited Airlines
Fri 7/1110:54 amPDX - TYS
1 stop8h 43mUnited Airlines
Deal found 6/10$368

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 June 12, 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

Wed 8/20

5:27 pm-11:20 pm

1 stop8h 53m

Portland

Tue 8/26

2:05 pm-12:19 am

1 stop7h 14m

$251

KnoxvillePortland

TYS - PDX

TYSPDX

Knoxville McGhee Tyson

Tue 8/5

4:02 pm-9:49 pm

1 stop8h 47m

Portland

Tue 8/12

6:00 am-5:19 pm

1 stop8h 19m

$271

KnoxvillePortland

TYS - PDX

TYSPDX

Knoxville McGhee Tyson

Fri 7/25

11:01 am-10:46 pm

1 stop14h 45m

Portland

Fri 8/1

8:22 am-9:42 pm

2 stops34h 20m

$292

KnoxvillePortland

TYS - PDX

TYSPDX

Knoxville McGhee Tyson

Thu 8/21

8:36 pm-12:15 am

1 stop6h 39m

Portland

Thu 8/28

6:27 am-7:41 pm

1 stop10h 14m

$301

KnoxvillePortland

TYS - PDX

TYSPDX

Knoxville McGhee Tyson

Fri 7/25

6:55 am-3:47 pm

2 stops11h 52m

Portland

Fri 8/1

8:22 am-9:42 pm

2 stops34h 20m

$359

KnoxvillePortland

TYS - PDX

TYSPDX

Knoxville McGhee Tyson

Thu 7/3

7:00 am-11:43 am

1 stop7h 43m

Portland

Fri 7/11

10:54 am-10:37 pm

1 stop8h 43m

$368

KnoxvillePortland

TYS - PDX

TYSPDX

Knoxville McGhee Tyson

Thu 9/25

1:20 pm-10:41 am

2 stops24h 21m

$169

KnoxvillePortland

TYS - PDX

TYSPDX

Knoxville McGhee Tyson

Tue 6/24

4:58 pm-11:17 am

2 stops21h 19m

$178

KnoxvillePortland

TYS - PDX

TYSPDX

Knoxville McGhee Tyson

Thu 9/25

8:26 pm-12:16 am

1 stop6h 50m

$180

KnoxvillePortland

TYS - PDX

TYSPDX

Knoxville McGhee Tyson

Thu 9/4

9:55 am-10:37 pm

2 stops15h 42m

$304

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

Showing 1-10 of 11 results
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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 June 9, 2025.

Booking 21 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, November is the cheapest month in which you can book a flight from Knoxville to Portland (average of $277). Flying from Knoxville to Portland in March is currently the most expensive (average of $368). 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 June 12, 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 18% 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 Friday at noon 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.

Rainfall in Portland by month

Plan your trip to Portland by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Portland ranges from 0.7 - 5.6 inches per month. November is typically the wettest month, when rainfall can reach 5.6 in. July is typically the driest time to visit Portland when rainfall is around 0.7 in.

Temperature in Portland by month

Plan your trip to Portland by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Portland, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 69.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 41.0 F).

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 June 12, 2025.
See what other customers who have flown with Delta, United Airlines and Allegiant Air from Knoxville to Portland have to say. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,946 reviews

Food

7.3

Entertainment

7.9

Boarding

8.2

Overall

8.0

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,946 reviews
Delta
8.0
Very good
7,946 reviews

Food

7.3

Entertainment

7.9

Boarding

8.2

Overall

8.0

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,790 reviews
Delta
8.0
Very good
7,946 reviews

Food

7.3

Entertainment

7.9

Boarding

8.2

Overall

8.0

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Allegiant Air
7.3
Good
725 reviews
Delta
8.0
Very good
7,946 reviews

Food

7.3

Entertainment

7.9

Boarding

8.2

Overall

8.0

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,946 reviews

Food

7.3

Entertainment

7.9

Boarding

8.2

Overall

8.0

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Frontier
6.0
Okay
3,295 reviews
Delta
8.0
Very good
7,946 reviews

Food

7.3

Entertainment

7.9

Boarding

8.2

Overall

8.0

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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.

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

    American Airlines, at $251, was found to be the cheapest airline from Knoxville to Portland.Alternate airlines to your destination round-trip include Delta and Frontier. Users have found that American Airlines is 46% 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 Allegiant Air. According to our data, you can fly for as low as $169. Users have also found prices from $180 and $304 on Frontier and United Airlines, 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, November is the cheapest month in which you can book a flight from Knoxville to Portland (average of $277). Flying from Knoxville to Portland in March is currently the most expensive (average of $368). 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 Knoxville?

Book flights to Knoxville if you plan to visit one of these locations
Seaside
Vancouver
Beaverton
Clackamas
Lincoln City
McMinnville
Lake Oswego
Hillsboro
Gresham
Astoria
Long Beach
Cannon Beach
Tigard
Longview
Hood River
Depoe Bay
Woodburn
Stevenson
Pacific City
Troutdale

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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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$146Average$361FlexibilityNo cancel feeOn-time62%
DeltaCheapest$279Average$436FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$279Average$447FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$325Average$536FlexibilityNo cancel feeOn-time69%

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