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 offers the lowest fares from Knoxville to Portland?

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

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

Chicago (ORD) was the most common stop: 33% 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.

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.

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

American Airlines and Allegiant Air are the most popular carriers operating from Knoxville McGhee Tyson to Portland

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 December 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.

$246 Cheap Flights from Knoxville to Portland in 2025/26

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7:05 am - 12:22 pm

TYS

PDX

8h 17m1 stop

11:00 am - 8:47 pm

PDX

TYS

6h 47m1 stop

$359United Airlines

Tue, Mar 3 - Wed, Mar 11

4:55 pm - 10:53 pm

TYS

PDX

8h 58m1 stop

5:00 am - 3:14 pm

PDX

TYS

7h 14m1 stop

$363United Airlines

Wed, Jan 28 - Sat, Jan 31

7:05 am - 2:48 pm

TYS

PDX

10h 43m2 stops

11:00 am - 8:47 pm

PDX

TYS

6h 47m1 stop

$364United Airlines

Tue, Mar 3 - Wed, Mar 11

6:59 am - 12:18 pm

TYS

PDX

8h 19m1 stop

10:47 am - 8:52 pm

PDX

TYS

7h 05m1 stop

$367United Airlines

Sat, Jan 24 - Sat, Jan 31

11:40 am - 9:12 pm

TYS

PDX

12h 32m2 stops

5:00 am - 3:14 pm

PDX

TYS

7h 14m1 stop

$368United Airlines

Wed, Jan 28 - Sat, Jan 31

12:20 pm - 8:52 pm

TYS

PDX

11h 32m2 stops

5:00 am - 5:31 pm

PDX

TYS

9h 31m2 stops

$369American Airlines

Tue, Mar 3 - Tue, Mar 10

1:59 pm - 6:56 pm

TYS

PDX

7h 57m1 stop

8:30 am - 8:52 pm

PDX

TYS

9h 22m2 stops

$372United Airlines

Sat, Jan 24 - Sat, Jan 31

11:10 am - 6:10 pm

TYS

PDX

10h 00m2 stops

8:30 am - 8:52 pm

PDX

TYS

9h 22m2 stops

$373United Airlines

Wed, Jan 28 - Sat, Jan 31

12:20 pm - 6:09 pm

TYS

PDX

8h 49m1 stop

10:22 pm - 8:41 am

PDX

TYS

7h 19m1 stop

$376American Airlines

Mon, Feb 23 - Sat, Feb 28

11:07 am - 6:55 pm

TYS

PDX

10h 48m2 stops

8:30 am - 8:52 pm

PDX

TYS

9h 22m2 stops

$377United Airlines

Sat, Jan 24 - Sat, Jan 31

United Airlines flights from Knoxville to Portland

Our best United Airlines deals on Knoxville to Portland flight tickets

United Airlines

Mar 3

TYS7:05 amKnoxville McGhee Tyson

8h 17m

1 stop

PDX12:22 pmPortland

Mar 11

PDX11:00 amPortland

6h 47m

1 stop

TYS8:47 pmKnoxville McGhee Tyson

$359

Find similar

United Airlines

Jan 28

TYS4:55 pmKnoxville McGhee Tyson

8h 58m

1 stop

PDX10:53 pmPortland

Jan 31

PDX5:00 amPortland

7h 14m

1 stop

TYS3:14 pmKnoxville McGhee Tyson

$363

Find similar

United Airlines

Mar 3

TYS7:05 amKnoxville McGhee Tyson

10h 43m

2 stops

PDX2:48 pmPortland

Mar 11

PDX11:00 amPortland

6h 47m

1 stop

TYS8:47 pmKnoxville McGhee Tyson

$364

Find similar

American Airlines flights from Knoxville to Portland

Our best American Airlines deals on Knoxville to Portland flight tickets

American Airlines

Mar 3

TYS12:20 pmKnoxville McGhee Tyson

11h 32m

2 stops

PDX8:52 pmPortland

Mar 10

PDX5:00 amPortland

9h 31m

2 stops

TYS5:31 pmKnoxville McGhee Tyson

$369

Find similar

American Airlines

Feb 23

TYS12:20 pmKnoxville McGhee Tyson

8h 49m

1 stop

PDX6:09 pmPortland

Feb 28

PDX10:22 pmPortland

7h 19m

1 stop

TYS8:41 amKnoxville McGhee Tyson

$376

Find similar

American Airlines

Feb 23

TYS6:23 pmKnoxville McGhee Tyson

8h 06m

1 stop

PDX11:29 pmPortland

Feb 28

PDX8:30 amPortland

10h 09m

2 stops

TYS9:39 pmKnoxville McGhee Tyson

$381

Find similar

Fly from

Fly to

Route

Depart

Return

Price

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

Wed 1/28

4:55 pm-10:53 pm

1 stop8h 58m

Portland

Sat 1/31

5:00 am-3:14 pm

1 stop7h 14m

$363

KnoxvillePortland

TYS - PDX

TYSPDX

Knoxville McGhee Tyson

Tue 3/3

7:05 am-2:48 pm

2 stops10h 43m

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

Wed 1/28

11:40 am-9:12 pm

2 stops12h 32m

Portland

Sat 1/31

5:00 am-3:14 pm

1 stop7h 14m

$368

KnoxvillePortland

TYS - PDX

TYSPDX

Knoxville McGhee Tyson

Tue 3/3

12:20 pm-8:52 pm

2 stops11h 32m

Portland

Tue 3/10

5:00 am-5:31 pm

2 stops9h 31m

$369

KnoxvillePortland

TYS - PDX

TYSPDX

Knoxville McGhee Tyson

Sat 1/24

1:59 pm-6:56 pm

1 stop7h 57m

Portland

Sat 1/31

8:30 am-8:52 pm

2 stops9h 22m

$372

KnoxvillePortland

TYS - PDX

TYSPDX

Knoxville McGhee Tyson

Wed 1/28

11:10 am-6:10 pm

2 stops10h 00m

Portland

Sat 1/31

8:30 am-8:52 pm

2 stops9h 22m

$373

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

Sat 1/24

11:07 am-6:55 pm

2 stops10h 48m

Portland

Sat 1/31

8:30 am-8:52 pm

2 stops9h 22m

$377

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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 August. Flight prices, which tend to average around $330, are often lower during this time because this is during the off-season. If you don’t want to visit Portland in August, then you should wait until February to fly from Knoxville, when ticket prices are also cheap, with an average price of $356.

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 $455 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 $326 on momondo.

How have Knoxville to Portland flight prices changed over time?

As of December 2025, prices for Knoxville to Portland flights are approximately 36% 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

Fastest flight time	7h 44m
Direct flights	None

The fastest flight from Knoxville to Portland takes 7h 44m

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 7h 44m.
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 December 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 60% of the total bookings. Other popular airlines include United Airlines with 20%, Delta with 17%, 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 $250	Free Cancellation	Rating 7.9 8,019 reviews	Search Delta flights
American Airlines	PriceFrom $279	Free Cancellation	Rating 7.2 11,067 reviews	Search American Airlines flights
United Airlines	PriceFrom $345	Free Cancellation	Rating 7.4 9,116 reviews	Search United Airlines flights
Alaska Airlines	PriceFrom $551	Free Cancellation	Rating 8.0 11,544 reviews	Search Alaska Airlines flights

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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 $219

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Knoxville to Portland departing on 5/2. 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

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 December 2025, prices for Knoxville to Portland flights are approximately 36% 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 and Allegiant Air 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?

Chicago (ORD) was the most common stop: 33% 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

Fastest flight time

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.

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