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

Cheapflights users have booked flights from Portland to Knoxville round-trip from $244. Other airlines that can offer you cheap pricing are United Airlines, from $308, and American Airlines, from $403. Frontier is 49% 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 Frontier, with whom users have recently found tickets for as low as $75. However, be on the lookout for offers from American Airlines and Delta, as they are both options that can get you from Portland to Knoxville for a low price.

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

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

What are the most popular airlines that fly from Portland to Knoxville?

Consider American Airlines, Delta or Frontier when booking your flight. These represent the most popular airlines when flying from Portland to Knoxville.

What is the cheapest day to fly round-trip from Portland to Knoxville?

Sunday flights are generally found to be more expensive for flights from Portland to Knoxville. This shouldn’t discourage you from searching, as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to Knoxville.

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

Travelers have found it’s best to book a flight 55 days in advance to save up to 77% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 55 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from Portland to Knoxville 1-2 weeks in advance for as low as $423, or $459 for flights within the next 24 hours.

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

Our data shows that January tends to be the cheapest month to fly to Knoxville from Portland. Users have commonly found prices around $485 for the month, but tickets can be as low as $264. Due to multiple factors, prepare for potentially higher prices in December.

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.

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.

$75+ Flights from Portland to Knoxville

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1. Tell us where you want to go

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2. Select your favorite providers

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The best prices from Portland to Knoxville McGhee Tyson are usually found in January or September, booked 68 days in advance, depart on a Tuesday or Wednesday and return on a Wednesday

Cheap flight deals from Portland to Knoxville

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$244 (Booking.com)
One-way from	$75 (CheapOair)
Popular in	December
Cheapest in	January
Average price	$615

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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High demand for flights, 3% potential price rise

Search Deals

Best time to find cheap flights, 2% potential price drop

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Average for round-trip flights in December 2024

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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 December 18, 2024.

Fri 12/201:59 pmPDX - TYS

1 stop7h 21mAmerican Airlines

Fri 12/275:15 amTYS - PDX

1 stop8h 55mAmerican Airlines

Deal found 12/17

$794

Sat 12/218:15 amPDX - TYS

2 stops23h 20mMultiple Airlines

Mon 12/234:44 pmTYS - PDX

2 stops18h 37mMultiple Airlines

Deal found 12/17

$802

Fri 12/275:00 amPDX - TYS

1 stop14h 38mUnited Airlines

Thu 1/25:45 amTYS - PDX

2 stops15h 20mUnited Airlines

Deal found 12/18

$1,050

Best flights from Portland to Knoxville
Discover carefully curated flight deals from Portland to Knoxville that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 18, 2024.

Wed 1/157:35 amPDX - TYS

1 stop28h 44mFrontier

Sun 1/194:19 pmTYS - PDX

1 stop21h 42mFrontier

Deal found 12/17

$244

Wed 1/157:00 amPDX - TYS

1 stop6h 59mUnited Airlines

Sun 1/198:30 amTYS - PDX

1 stop8h 20mUnited Airlines

Deal found 12/18

$308

Wed 3/52:14 pmPDX - TYS

1 stop6h 40mAmerican Airlines

Sat 3/84:16 pmTYS - PDX

1 stop7h 40mAmerican Airlines

Deal found 12/17

$403

Tue 1/215:30 pmPDX - TYS

2 stops23h 29mMultiple Airlines

Fri 1/247:00 amTYS - PDX

3 stops36h 35mMultiple Airlines

Deal found 12/18

$405

Mon 1/2012:45 amPDX - TYS

2 stops9h 42mDelta

Fri 1/245:00 pmTYS - PDX

1 stop7h 55mDelta

Deal found 12/17

$543

Last-minute flights from Portland to Knoxville
Discover last-minute flight deals from Portland to Knoxville. Data last updated December 18, 2024 and is based on user searches.

Fri 12/201:59 pmPDX - TYS

1 stop7h 21mAmerican Airlines

Fri 12/275:15 amTYS - PDX

1 stop8h 55mAmerican Airlines

Deal found 12/17

$794

Fri 12/2711:59 pmPDX - TYS

2 stops18h 17mMultiple Airlines

Mon 12/302:27 pmTYS - PDX

1 stop12h 07mMultiple Airlines

Deal found 12/17

$925

Fri 12/275:40 amPDX - TYS

1 stop8h 50mAmerican Airlines

Mon 12/305:24 amTYS - PDX

1 stop8h 46mAmerican Airlines

Deal found 12/17

$949

Fri 12/275:00 amPDX - TYS

1 stop14h 38mUnited Airlines

Thu 1/25:45 amTYS - PDX

2 stops15h 20mUnited Airlines

Deal found 12/18

$1,050

Wed 1/157:35 amPDX - TYS

1 stop28h 44mFrontier

Sun 1/194:19 pmTYS - PDX

1 stop21h 42mFrontier

Deal found 12/17

$244

Wed 1/1511:52 amPDX - TYS

1 stop8h 54mUnited Airlines

Sun 1/198:30 amTYS - PDX

1 stop8h 20mUnited Airlines

Deal found 12/18

$308

Mon 1/2012:45 amPDX - TYS

2 stops9h 42mDelta

Fri 1/245:00 pmTYS - PDX

1 stop7h 55mDelta

Deal found 12/17

$543

Tue 1/215:30 pmPDX - TYS

2 stops23h 29mMultiple Airlines

Fri 1/247:00 amTYS - PDX

3 stops36h 35mMultiple Airlines

Deal found 12/18

$405

One-way flights from Portland to Knoxville
Search for one-way flight options from Portland to Knoxville. Find affordable one-way fares based on user searches. Data last updated December 18, 2024.

Wed 2/57:35 amPDX - TYS

1 stop28h 44mFrontier

Deal found 12/17

$75

Wed 2/55:30 pmPDX - TYS

2 stops16h 21mMultiple Airlines

Deal found 12/17

$173

Mon 1/137:35 amPDX - TYS

1 stop6h 52mAmerican Airlines

Deal found 12/17

$269

Mon 2/1712:59 amPDX - TYS

2 stops9h 28mDelta

Deal found 12/17

$304

Tue 2/189:55 amPDX - TYS

3 stops27h 59mUnited Airlines

Deal found 12/17

$393

Find flights from Portland to Knoxville within your budget

Fly from

Fly to

Route

Depart

Return

Price

PortlandKnoxville

PDX - TYS

PDXTYS

Portland

Wed 1/15

7:35 am-3:19 pm

1 stop28h 44m

Knoxville McGhee Tyson

Sun 1/19

4:19 pm-11:01 am

1 stop21h 42m

$244

PortlandKnoxville

PDX - TYS

PDXTYS

Portland

Wed 1/15

11:52 am-11:46 pm

1 stop8h 54m

Knoxville McGhee Tyson

Sun 1/19

8:30 am-1:50 pm

1 stop8h 20m

$308

PortlandKnoxville

PDX - TYS

PDXTYS

Portland

Sat 6/7

11:31 pm-10:19 am

1 stop7h 48m

Knoxville McGhee Tyson

Sat 6/14

6:36 pm-12:27 am

1 stop8h 51m

$363

PortlandKnoxville

PDX - TYS

PDXTYS

Portland

Tue 1/21

5:30 pm-7:59 pm

2 stops23h 29m

Knoxville McGhee Tyson

Fri 1/24

7:00 am-4:35 pm

3 stops36h 35m

$405

PortlandKnoxville

PDX - TYS

PDXTYS

Portland

Mon 1/20

12:45 am-1:27 pm

2 stops9h 42m

Knoxville McGhee Tyson

Fri 1/24

5:00 pm-9:55 pm

1 stop7h 55m

$543

PortlandKnoxville

PDX - TYS

PDXTYS

Portland

Fri 4/4

7:41 pm-10:49 am

2 stops12h 08m

Knoxville McGhee Tyson

Mon 4/7

3:00 pm-5:50 pm

1 stop29h 50m

$783

PortlandKnoxville

PDX - TYS

PDXTYS

Portland

Wed 2/5

7:35 am-3:19 pm

1 stop28h 44m

$75

PortlandKnoxville

PDX - TYS

PDXTYS

Portland

Wed 2/5

5:30 pm-12:51 pm

2 stops16h 21m

$173

PortlandKnoxville

PDX - TYS

PDXTYS

Portland

Tue 2/18

5:31 am-11:54 pm

1 stop15h 23m

$227

PortlandKnoxville

PDX - TYS

PDXTYS

Portland

Mon 2/17

12:59 am-1:27 pm

2 stops9h 28m

$304

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/17

Showing 1-10 of 11 results

Compare providers for flights from Portland to Knoxville

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Portland to Knoxville in December.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy1 star	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*3 stars
eDreams	Price Accuracy3 stars	Trust Score*3 stars
AranGrant	Price Accuracy3 stars	Trust Score*2 stars
Mytrip	Price Accuracy3 stars	Trust Score*3 stars
Kiwi.com	Price Accuracy3 stars	Trust 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.

Travel insights for flights from Portland to Knoxville

Get recent, data-driven insights about flights from Portland to Knoxville including ideal travel times, pricing trends, and more.

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

The best time to book flights from Portland to Knoxville is 68 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 $304). Flying from Portland to Knoxville in April is currently the most expensive (average of $371). 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?

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

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

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

Peruse reviews from past customers who have flown with American Airlines 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.

Delta

8.0

Very good

8,604 reviews

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Delta

8.0

Very good

8,604 reviews

Delta

8.0

Very good

8,604 reviews

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

United Airlines

7.4

Good

9,059 reviews

Delta

8.0

Very good

8,604 reviews

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

American Airlines

7.2

Good

10,000 reviews

Delta

8.0

Very good

8,604 reviews

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Frontier

6.1

Okay

3,479 reviews

Delta

8.0

Very good

8,604 reviews

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Related info for your journey

What are the cheapest airlines flying from Portland to Knoxville round-trip?
Cheapflights users have booked flights from Portland to Knoxville round-trip from $244. Other airlines that can offer you cheap pricing are United Airlines, from $308, and American Airlines, from $403. Frontier is 49% 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 Frontier, with whom users have recently found tickets for as low as $75. However, be on the lookout for offers from American Airlines and Delta, 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 $304). Flying from Portland to Knoxville in April is currently the most expensive (average of $371). 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

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Other flights to Knoxville

Top 4 airlines flying from Portland to Knoxville

Airline	Cheapest	Average	Flexibility	On-time
Frontier	Cheapest$168	Average$279	FlexibilityNo cancel fee	On-time62%
Delta	Cheapest$284	Average$436	FlexibilityNo cancel fee	On-timeN/A
American Airlines	Cheapest$289	Average$475	FlexibilityNo cancel fee	On-time71%
United Airlines	Cheapest$308	Average$536	FlexibilityNo cancel fee	On-time69%

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$75+ 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 2/5. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Portland to Knoxville with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

The best prices from Portland to Knoxville McGhee Tyson are usually found in January or September, booked 68 days in advance, depart on a Tuesday or Wednesday and return on a Wednesday

Cheap flight deals from Portland to Knoxville

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Portland to Knoxville

Cheapest flights from Portland to KnoxvilleExplore 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 December 18, 2024.

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 December 18, 2024.

Find flights from Portland to Knoxville within your budget

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 December.

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.

Travel insights for flights from Portland to Knoxville

Get recent, data-driven insights about flights from Portland to Knoxville including ideal travel times, pricing trends, and more.

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 December 13, 2024.

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

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 December 18, 2024.

Rainfall in Knoxville by month

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

Temperature in Knoxville by month

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

Reviews of airlines servicing Knoxville

Peruse reviews from past customers who have flown with American Airlines 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.

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?

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

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

How can I find direct flights from Portland to Knoxville?

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

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

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.

Alternative routes for Portland to Knoxville

See prices for flight routes from nearby airports that may be better suited for you.

Top 4 airlines flying from Portland to Knoxville

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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 December 18, 2024.