What airlines fly to Portland?

American Airlines, Delta and United Airlines are the top three most popular airlines that fly to Portland from Knoxville according to our data. American Airlines is the first choice among our users, with 55% of people opting to fly with this airline when traveling to Portland. Keep in mind that there are 4 different airlines that fly to Portland on a routine basis, so you have a few additional options to choose from.

Which layover airport has the shortest travel time from Knoxville to Portland?

Flights connecting via Detroit (DTW) have the shortest average one-way travel time: 7h 48m.

Which airport is the most popular layover for flights between Knoxville and Portland?

Atlanta (ATL) was the most common stop: 40% of momondo users choosing 1-stop flights on this route connected there.

Which layover airport has the shortest connection time from Knoxville to Portland?

Detroit (DTW) has the shortest average layover time for this route: 0h 58m.

What is the cheapest airline that flies from Knoxville McGhee Tyson to Portland?

American Airlines, Frontier, and United Airlines are the most popular carriers operating from Knoxville McGhee Tyson to Portland

Which layover airport offers the lowest fares from Knoxville to Portland?

Flights via Chicago (ORD) offer the lowest average round-trip price of $249.

When did momondo last update prices for flights from Knoxville McGhee Tyson Airport to Portland Airport?

Prices for flights from Knoxville McGhee Tyson Airport to Portland Airport were last updated today.

How many operators does momondo search for flights from Knoxville McGhee Tyson Airport to Portland Airport?

As of October 2025, there are 4 operators available to choose from for flights from Knoxville McGhee Tyson Airport to Portland Airport.

How old do you have to be to fly from Knoxville McGhee Tyson Airport to Portland Airport?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Knoxville McGhee Tyson Airport to Portland Airport.

What documentation or ID do you need to fly to Portland Airport?

The necessary travel and health documents for your Portland Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$186 Cheap Flights from Knoxville to Portland in 2025/26

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6:30 am - 11:56 amTYS-PDX

8h 26m1 stop

12:51 pm - 3:57 pmPDX-TYS

24h 06m1 stop

$186Multiple Airlines

Find Deal

Thu, Dec 4 - Sun, Dec 7

7:17 pm - 11:56 amTYS-PDX

19h 39m1 stop

12:52 pm - 6:22 pmPDX-TYS

26h 30m1 stop

$196Frontier

Find Deal

Thu, Oct 30 - Sat, Nov 8

6:30 am - 11:43 amTYS-PDX

8h 13m1 stop

12:47 pm - 8:39 pmPDX-TYS

28h 52m1 stop

$243Multiple Airlines

Find Deal

Thu, Dec 18 - Tue, Dec 30

6:30 am - 11:56 amTYS-PDX

8h 26m1 stop

7:26 pm - 3:57 pmPDX-TYS

17h 31m2 stops

$244Multiple Airlines

Find Deal

Thu, Dec 4 - Sun, Dec 7

6:18 pm - 11:26 pmTYS-PDX

8h 08m1 stop

11:37 am - 9:40 pmPDX-TYS

7h 03m1 stop

$269American Airlines

Find Deal

Wed, Nov 19 - Wed, Dec 10

12:00 pm - 7:18 pmTYS-PDX

10h 18m1 stop

7:14 pm - 9:13 amPDX-TYS

10h 59m2 stops

$274Delta

Find Deal

Sat, Feb 21 - Tue, Feb 24

5:35 am - 12:48 pmTYS-PDX

10h 13m2 stops

6:15 am - 8:00 pmPDX-TYS

10h 45m2 stops

$279Delta

Find Deal

Wed, Nov 19 - Wed, Dec 10

11:45 am - 10:51 pmTYS-PDX

14h 06m2 stops

5:00 am - 2:43 pmPDX-TYS

6h 43m1 stop

$374United Airlines

Find Deal

Sat, Nov 8 - Wed, Nov 12

11:45 am - 10:51 pmTYS-PDX

14h 06m2 stops

7:38 pm - 10:05 amPDX-TYS

11h 27m2 stops

$379United Airlines

Find Deal

Sat, Nov 8 - Wed, Nov 12

5:03 pm - 11:52 pmTYS-PDX

9h 49m1 stop

12:49 am - 11:28 amPDX-TYS

7h 39m1 stop

$424American Airlines

Find Deal

Wed, Dec 17 - Sun, Dec 28

Frontier flights from Knoxville to Portland

Our best Frontier deals on Knoxville to Portland flight tickets

Frontier

Oct 30

TYS7:17 pmKnoxville McGhee Tyson

19h 39m

1 stop

PDX11:56 amPortland

Nov 8

PDX12:52 pmPortland

26h 30m

1 stop

TYS6:22 pmKnoxville McGhee Tyson

$196

Find similar

Frontier

Oct 30

TYS7:17 pmKnoxville McGhee Tyson

22h 14m

2 stops

PDX2:31 pmPortland

Nov 8

PDX12:52 pmPortland

26h 30m

1 stop

TYS6:22 pmKnoxville McGhee Tyson

$265

Find similar

Frontier

Oct 24

TYS8:17 pmKnoxville McGhee Tyson

18h 31m

1 stop

PDX11:48 amPortland

Oct 26

PDX12:43 pmPortland

27h 49m

1 stop

TYS7:32 pmKnoxville McGhee Tyson

$326

Find similar

American Airlines flights from Knoxville to Portland

Our best American Airlines deals on Knoxville to Portland flight tickets

American Airlines

Nov 19

TYS6:18 pmKnoxville McGhee Tyson

8h 08m

1 stop

PDX11:26 pmPortland

Dec 10

PDX11:37 amPortland

7h 03m

1 stop

TYS9:40 pmKnoxville McGhee Tyson

$269

Find similar

American Airlines

Dec 17

TYS5:03 pmKnoxville McGhee Tyson

9h 49m

1 stop

PDX11:52 pmPortland

Dec 28

PDX12:49 amPortland

7h 39m

1 stop

TYS11:28 amKnoxville McGhee Tyson

$424

Find similar

American Airlines

Dec 21

TYS6:20 pmKnoxville McGhee Tyson

9h 34m

1 stop

PDX12:54 amPortland

Dec 29

PDX11:59 pmPortland

8h 29m

1 stop

TYS11:28 amKnoxville McGhee Tyson

$433

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Fly from

Fly to

Route

Depart

Return

Price

KnoxvillePortland

TYS - PDX

TYSPDX

Knoxville McGhee Tyson

Thu 12/4

6:30 am-11:56 am

1 stop8h 26m

Portland

Sun 12/7

12:51 pm-3:57 pm

1 stop24h 06m

$186

KnoxvillePortland

TYS - PDX

TYSPDX

Knoxville McGhee Tyson

Thu 10/30

7:17 pm-11:56 am

1 stop19h 39m

Portland

Sat 11/8

12:52 pm-6:22 pm

1 stop26h 30m

$196

KnoxvillePortland

TYS - PDX

TYSPDX

Knoxville McGhee Tyson

Thu 12/18

6:30 am-11:43 am

1 stop8h 13m

Portland

Tue 12/30

12:47 pm-8:39 pm

1 stop28h 52m

$243

KnoxvillePortland

TYS - PDX

TYSPDX

Knoxville McGhee Tyson

Thu 12/4

6:30 am-11:56 am

1 stop8h 26m

Portland

Sun 12/7

7:26 pm-3:57 pm

2 stops17h 31m

$244

KnoxvillePortland

TYS - PDX

TYSPDX

Knoxville McGhee Tyson

Wed 11/19

6:18 pm-11:26 pm

1 stop8h 08m

Portland

Wed 12/10

11:37 am-9:40 pm

1 stop7h 03m

$269

KnoxvillePortland

TYS - PDX

TYSPDX

Knoxville McGhee Tyson

Sat 2/21

12:00 pm-7:18 pm

1 stop10h 18m

Portland

Tue 2/24

7:14 pm-9:13 am

2 stops10h 59m

$274

KnoxvillePortland

TYS - PDX

TYSPDX

Knoxville McGhee Tyson

Wed 11/19

5:35 am-12:48 pm

2 stops10h 13m

Portland

Wed 12/10

6:15 am-8:00 pm

2 stops10h 45m

$279

KnoxvillePortland

TYS - PDX

TYSPDX

Knoxville McGhee Tyson

Sat 11/8

11:45 am-10:51 pm

2 stops14h 06m

Portland

Wed 11/12

5:00 am-2:43 pm

1 stop6h 43m

$374

KnoxvillePortland

TYS - PDX

TYSPDX

Knoxville McGhee Tyson

Sat 11/8

11:45 am-10:51 pm

2 stops14h 06m

Portland

Wed 11/12

7:38 pm-10:05 am

2 stops11h 27m

$379

KnoxvillePortland

TYS - PDX

TYSPDX

Knoxville McGhee Tyson

Wed 12/17

5:03 pm-11:52 pm

1 stop9h 49m

Portland

Sun 12/28

12:49 am-11:28 am

1 stop7h 39m

$424

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How to get the cheapest flight ticket from Knoxville to Portland

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Layovers

What is the cheapest month to fly to Portland?

The cheapest month to fly to Portland from Knoxville is in February. Flight prices, which tend to average around $323, are often lower during this time because this is during the off-season. If you don’t want to visit Portland in February, then you should wait until August to fly from Knoxville, when ticket prices are also cheap, with an average price of $338.

What is the cheapest day to depart on your flight to Portland?

The cheapest day to depart on your flight to Portland is on a Wednesday when prices can be found for as low as $441. This is often the case because there is less demand to fly during this day of the week. The most expensive day to fly to Portland is Sunday, with ticket prices averaging around $790.

What is the cheapest time of day to depart on your flight to Portland?

The cheapest time of day to fly to Portland is in the evening when flights can be purchased for as low as $421. In the afternoon is when there is more demand to fly to Portland, so prices are often more expensive at around $512 per ticket.

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

You are more likely to see cheaper flights to Portland from Knoxville when booking weeks ahead of your departure date. In general, you can expect to find flights to Portland for around $452 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Portland from Knoxville for as low as $338 on momondo.

How have Knoxville to Portland flight prices changed over time?

As of October 2025, prices for Knoxville to Portland flights are approximately 95% more expensive when compared to flights at the same time last year.

When to book flights from Knoxville to Portland

Are you open to changing your travel dates? Check out the ideal times to fly from Knoxville to Portland according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Knoxville to Portland (TYS to PDX) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Knoxville to Portland

Direct flights	None

There are no direct flights from Knoxville to Portland. There are no popular flight routes from Knoxville to Portland.

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How far is Knoxville McGhee Tyson to Portland by plane?
Knoxville McGhee Tyson and Portland are 2108.9 mi apart from one another. A reasonable flight in good conditions will take 8h 04m.
When did momondo last update prices for flights from Knoxville McGhee Tyson Airport to Portland Airport?
Prices for flights from Knoxville McGhee Tyson Airport to Portland Airport were last updated today.
How many operators does momondo search for flights from Knoxville McGhee Tyson Airport to Portland Airport?
As of October 2025, there are 4 operators available to choose from for flights from Knoxville McGhee Tyson Airport to Portland Airport.
How old do you have to be to fly from Knoxville McGhee Tyson Airport to Portland Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Knoxville McGhee Tyson Airport to Portland Airport.
What documentation or ID do you need to fly to Portland Airport?
The necessary travel and health documents for your Portland Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from Knoxville to Portland?
Based on momondo bookings for flights between Knoxville and Portland, the leading airline is American Airlines, making up 58% of the total bookings. Other popular airlines include United Airlines with 20%, Delta with 19%, and Alaska Airlines with 3%.

Best airlines flying from Knoxville to Portland

Compare and see reviews for airlines that fly from Knoxville to Portland with momondo

Airline	Rating	Free Cancellation	Price
Delta	PriceFrom $263	Free Cancellation	Rating 7.9 7,978 reviews	Search Delta flights
American Airlines	PriceFrom $279	Free Cancellation	Rating 7.2 11,024 reviews	Search American Airlines flights
United Airlines	PriceFrom $328	Free Cancellation	Rating 7.4 8,991 reviews	Search United Airlines flights
Alaska Airlines	PriceFrom $551	Free Cancellation	Rating 8.0 11,136 reviews	Search Alaska Airlines flights

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Gresham

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Why use momondo?

Why should I use momondo to find a flight deal from Knoxville to Portland?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Knoxville to Portland for you.

Can I find flights from Knoxville to Portland with flexible booking policies on momondo?

momondo does allow users to show only those flights to Portland from Knoxville which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Knoxville to Portland?

Once all potential Knoxville to Portland flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Knoxville to Portland right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Knoxville to Portland flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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Cheap flights from Knoxville to Portland from $186

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Knoxville to Portland departing on 12/4. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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How to get the cheapest flight ticket from Knoxville to Portland

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Portland?

What is the cheapest day to depart on your flight to Portland?

The cheapest day to depart on your flight to Portland is on a Wednesday when prices can be found for as low as $441. This is often the case because there is less demand to fly during this day of the week. The most expensive day to fly to Portland is Sunday, with ticket prices averaging around $790.

What is the cheapest time of day to depart on your flight to Portland?

The cheapest time of day to fly to Portland is in the evening when flights can be purchased for as low as $421. In the afternoon is when there is more demand to fly to Portland, so prices are often more expensive at around $512 per ticket.

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

How have Knoxville to Portland flight prices changed over time?

As of October 2025, prices for Knoxville to Portland flights are approximately 95% more expensive when compared to flights at the same time last year.

What is the cheapest airline that flies from Knoxville McGhee Tyson to Portland?

American Airlines, Frontier, and United Airlines are the most popular carriers operating from Knoxville McGhee Tyson to Portland

What airlines fly to Portland?

Which airport is the most popular layover for flights between Knoxville and Portland?

Atlanta (ATL) was the most common stop: 40% of momondo users choosing 1-stop flights on this route connected there.

Which layover airport offers the lowest fares from Knoxville to Portland?

Flights via Chicago (ORD) offer the lowest average round-trip price of $249.

Which layover airport has the shortest travel time from Knoxville to Portland?

Flights connecting via Detroit (DTW) have the shortest average one-way travel time: 7h 48m.

Which layover airport has the shortest connection time from Knoxville to Portland?

Detroit (DTW) has the shortest average layover time for this route: 0h 58m.

When to book flights from Knoxville to Portland

Cheap Knoxville to Portland (TYS to PDX) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Knoxville to Portland

Direct flights

How far is Knoxville McGhee Tyson to Portland by plane?

When did momondo last update prices for flights from Knoxville McGhee Tyson Airport to Portland Airport?

How many operators does momondo search for flights from Knoxville McGhee Tyson Airport to Portland Airport?

How old do you have to be to fly from Knoxville McGhee Tyson Airport to Portland Airport?

What documentation or ID do you need to fly to Portland Airport?

What is the most popular airline from Knoxville to Portland?

Best airlines flying from Knoxville to Portland

Compare and see reviews for airlines that fly from Knoxville to Portland with momondo

Traveling to a place near Portland?

Why use momondo?

Why should I use momondo to find a flight deal from Knoxville to Portland?

Can I find flights from Knoxville to Portland with flexible booking policies on momondo?

How can momondo help me find flights from Knoxville to Portland?

I’m not ready to book a flight from Knoxville to Portland right now. Can momondo alert me if prices change?

An easier way to manage your Portland trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United States

Airports servicing Oregon