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$125+ Cheap flights from Portland to Knoxville (PDX - TYS)

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 4/19. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — TYS
Mar 26 — Apr 21
Wed 3/26
Wed 4/2
1 adult, Economy
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Cheapflights Tip: The best prices from Portland to Knoxville McGhee Tyson are usually found in September or February, booked 90 days in advance, depart on a Tuesday or Wednesday and return on a Wednesday

Cheap flight deals from Portland to Knoxville

Discover tips and strategies to find the most affordable flight options for your journey from Portland (PDX) to Knoxville (TYS). 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 March 21, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$249
(American Airlines)

One-way from

$125
(American Airlines)

Popular in

December

Cheapest in

September

Average price

$538
Provider with most accurate pricing for Portland-Knoxville McGhee Tyson flight deals.
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Provider most trusted by Cheapflights users for Portland-Knoxville McGhee Tyson flights.
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From Portland to Knoxville McGhee Tyson
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One-way flight from Portland to Knoxville McGhee Tyson
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Highest demand for flights based on searches. 5% potential increase in price ($27 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($13 potential savings vs. average RT price).
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Average for round-trip flights in March 2025
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Find flight deals from Portland to Knoxville

Cheapest flights from Portland to Knoxville
Explore the most affordable flight options available from Portland to Knoxville. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 21, 2025.

This American Airlines deal was found by Cheapflights users on 3/20. 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 4/1510:00 pmPDX - TYS
1 stop9h 38mAmerican Airlines
Wed 4/235:24 amTYS - PDX
1 stop10h 35mAmerican Airlines
Deal found 3/20$249
This Delta deal was found by Cheapflights users on 3/21. 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 5/209:40 amPDX - TYS
2 stops10h 24mDelta
Tue 6/105:55 pmTYS - PDX
2 stops8h 57mDelta
Deal found 3/21$259
This United Airlines deal was found by Cheapflights users on 3/19. 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.
Sun 4/2711:59 pmPDX - TYS
1 stop7h 16mUnited Airlines
Sat 5/39:15 amTYS - PDX
2 stops11h 13mUnited Airlines
Deal found 3/19$284
This Frontier deal was found by Cheapflights users on 3/20. 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 4/106:40 amPDX - TYS
1 stop6h 01mFrontier
Sun 4/134:43 pmTYS - PDX
1 stop10h 54mFrontier
Deal found 3/20$338
This Mytrip deal was found by Cheapflights users on 3/19. 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 4/187:45 pmPDX - TYS
2 stops22h 18mMultiple Airlines
Fri 4/2510:00 amTYS - PDX
3 stops30h 37mMultiple Airlines
Deal found 3/19$360
This Alaska Airlines deal was found by Cheapflights users on 3/21. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/187:00 amPDX - TYS
2 stops11h 50mAlaska Airlines
Sat 7/2612:17 pmTYS - PDX
1 stop9h 30mAlaska Airlines
Deal found 3/21$580

Cheapflights Fare Finder

Customize your flight search to find flights from Portland to Knoxville 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 March 21, 2025.
Use the filters below to find and compare flights from Portland to Knoxville that are best for you.

Fly from

Portland

Fly to

Knoxville

Route

Depart

Return

Price

PortlandKnoxville

PDX - TYS

PDXTYS

Portland

Tue 4/15

10:00 pm-10:38 am

1 stop9h 38m

Knoxville McGhee Tyson

Wed 4/23

5:24 am-12:59 pm

1 stop10h 35m

$249

PortlandKnoxville

PDX - TYS

PDXTYS

Portland

Tue 5/20

9:40 am-11:04 pm

2 stops10h 24m

Knoxville McGhee Tyson

Tue 6/10

5:55 pm-11:52 pm

2 stops8h 57m

$259

PortlandKnoxville

PDX - TYS

PDXTYS

Portland

Sun 4/27

11:59 pm-10:15 am

1 stop7h 16m

Knoxville McGhee Tyson

Sat 5/3

9:15 am-5:28 pm

2 stops11h 13m

$284

PortlandKnoxville

PDX - TYS

PDXTYS

Portland

Thu 4/10

6:40 am-3:41 pm

1 stop6h 01m

Knoxville McGhee Tyson

Sun 4/13

4:43 pm-12:37 am

1 stop10h 54m

$338

PortlandKnoxville

PDX - TYS

PDXTYS

Portland

Mon 4/7

1:20 pm-6:32 pm

2 stops26h 12m

Knoxville McGhee Tyson

Thu 5/8

3:52 pm-12:40 pm

2 stops23h 48m

$347

PortlandKnoxville

PDX - TYS

PDXTYS

Portland

Fri 7/18

7:00 am-9:50 pm

2 stops11h 50m

Knoxville McGhee Tyson

Sat 7/26

12:17 pm-6:47 pm

1 stop9h 30m

$580

PortlandKnoxville

PDX - TYS

PDXTYS

Portland

Sat 4/19

11:59 pm-11:34 am

1 stop8h 35m

$125

PortlandKnoxville

PDX - TYS

PDXTYS

Portland

Fri 4/18

12:59 am-12:15 pm

2 stops8h 16m

$130

PortlandKnoxville

PDX - TYS

PDXTYS

Portland

Tue 7/1

2:35 pm-1:12 pm

1 stop19h 37m

$162

PortlandKnoxville

PDX - TYS

PDXTYS

Portland

Sun 6/29

10:35 am-1:38 pm

2 stops24h 03m

$191

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/20

Showing 1-10 of 11 results
1
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Compare providers for flights from Portland to Knoxville

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 Portland to Knoxville in March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
MytripPrice 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 Portland-Knoxville flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Portland-Knoxville flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Portland-Knoxville flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Portland-Knoxville 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 Portland-Knoxville 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 Portland to Knoxville

Have a flexible travel schedule? Discover the best time to fly to Knoxville from Portland 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 Portland to Knoxville

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

Use this chart to determine the optimal time to book a round-trip flight from Portland to Knoxville. Price data was last updated on March 14, 2025.

The best time to book flights from Portland to Knoxville is 90 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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

Currently, January is the cheapest month in which you can book a flight from Portland to Knoxville (average of $295). Flying from Portland to Knoxville in March is currently the most expensive (average of $376). 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 PDX to TYS?

Find hourly flight availability from Portland to Knoxville. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 21, 2025.

When flying from Portland to Knoxville, the time of day you fly usually plays a role in the price. Save by searching for a flight at noon, which can drop the price by up to 4% versus a flight in the afternoon.

Rainfall in Knoxville by month

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

In terms of precipitation, rainfall in Knoxville ranges from 2.7 - 4.8 inches per month. March is typically the wettest month, when rainfall can reach 4.8 in. October is typically the driest time to visit Knoxville when rainfall is around 2.7 in.

Temperature in Knoxville by month

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

If weather is an important factor for your trip to Knoxville, 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 78.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 39.2 F).

Reviews of airlines servicing Knoxville

Get insights into the airlines that provide service to Knoxville. 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 Knoxville. Reviews last updated March 21, 2025.
Peruse reviews from past customers who have flown with Alaska Airlines, Delta and United Airlines from Portland to Knoxville to help guide your decision. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,759 reviews

Overall

8.0

Food

7.1

Comfort

7.9

Boarding

8.2

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Alaska Airlines
8.0
Very good
9,759 reviews
Alaska Airlines
8.0
Very good
9,759 reviews

Overall

8.0

Food

7.1

Comfort

7.9

Boarding

8.2

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Delta
8.0
Very good
7,895 reviews
Alaska Airlines
8.0
Very good
9,759 reviews

Overall

8.0

Food

7.1

Comfort

7.9

Boarding

8.2

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
United Airlines
7.4
Good
8,605 reviews
Alaska Airlines
8.0
Very good
9,759 reviews

Overall

8.0

Food

7.1

Comfort

7.9

Boarding

8.2

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Allegiant Air
7.3
Good
732 reviews
Alaska Airlines
8.0
Very good
9,759 reviews

Overall

8.0

Food

7.1

Comfort

7.9

Boarding

8.2

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
9,759 reviews

Overall

8.0

Food

7.1

Comfort

7.9

Boarding

8.2

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Related info for your journey

Find useful and relevant information for your journey from Portland to Knoxville. 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 Portland to Knoxville round-trip?

    Cheapflights users have booked flights from Portland to Knoxville round-trip from $249. Other airlines that can offer you cheap pricing are Delta, from $259, and United Airlines, from $284. American Airlines is 48% cheaper than the average price of flights available within the next 90 days to this destination.

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

    The cheapest airline one-way is American Airlines, with whom users have recently found tickets for as low as $125. However, be on the lookout for offers from Delta and Allegiant Air, as they are both options that can get you from Portland to Knoxville for a low price.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Portland to Knoxville 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 Portland to Knoxville?

    Currently, January is the cheapest month in which you can book a flight from Portland to Knoxville (average of $295). Flying from Portland to Knoxville in March is currently the most expensive (average of $376). 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
Morristown
Cherokee
Corbin
Maryville
Oak Ridge
Alcoa
Murphy

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Top 4 airlines flying from Portland to Knoxville

Discover the top 4 airlines that operate flights from Portland to Knoxville. 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 March 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$168Average$268FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$289Average$481FlexibilityNo cancel feeOn-time71%
DeltaCheapest$307Average$447FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$308Average$517FlexibilityNo cancel feeOn-time69%
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