What are the cheapest airlines flying from Washington, D.C. to Knoxville round-trip?

Our cheapest airline available from Washington, D.C. to Knoxville is Allegiant Air. Our recent data shows that you can find tickets from as low as $119 on this airline. Additional options worth looking into are American Airlines and United Airlines, starting at $184 and $189 round-trip. You may be able to fly from Washington, D.C. to Knoxville for 61% less than the average price by searching for these airlines.

What are the cheapest airlines to fly from Washington, D.C. to Knoxville one-way?

The cheapest airline one-way is Allegiant Air, with whom users have recently found tickets for as low as $43. However, be on the lookout for offers from United Airlines and American Airlines, as they are both options that can get you from Washington, D.C. to Knoxville for a low price.

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.

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).

What are the most popular routes from Washington, D.C. to Knoxville?

When deciding which route to take from Washington, D.C. to Knoxville consider Washington, D.C. Dulles Intl - Knoxville McGhee Tyson, Washington, D.C. Reagan-National - Knoxville McGhee Tyson or Baltimore/Washington - Knoxville McGhee Tyson as they are the most popular.

What are the cheapest flights from Washington, D.C. to Knoxville?

While on average a flight from Washington, D.C. to Knoxville is generally $187, our data shows the cheapest flight currently is $40. When looking at the most popular route, (Washington, D.C. Dulles Intl - Knoxville McGhee Tyson), you can expect to pay $62 for that flight.

What are the most reliable airlines from Washington, D.C. to Knoxville?

Consider Allegiant Air (83%), Avianca (72%) or Copa Airlines (72%) when booking your flight. These represent the most reliable airlines when flying from Washington, D.C. to Knoxville.

What is the cheapest day to fly round-trip from Washington, D.C. to Knoxville?

Saturday flights are found to be more expensive to fly from Washington, D.C. 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 Washington, D.C. to Knoxville?

To save on the cost of your flight from Washington, D.C. to Knoxville, book at least 40 days before your planned departure. Booking around this time can save you about 63% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $268 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $497.

What is the cheapest month to fly from Washington, D.C. to Knoxville?

Our data shows that January tends to be the cheapest month to fly to Knoxville from Washington, D.C.. Users have commonly found prices around $313 for the month, but tickets can be as low as $159. Due to multiple factors, prepare for potentially higher prices in October.

What airport do you fly into for flights to Knoxville from Washington, D.C.?

Knoxville McGhee Tyson (TYS), located 11.3 mi from the city center, is the airport you fly into when you book flights from Washington, D.C. to Knoxville. 4 airlines have flights to McGhee Tyson from Washington, D.C. on a regular basis. Booking flights from Washington, D.C. to Knoxville McGhee Tyson should not be difficult; the airport handles an average of 16 inbound flights from Washington, D.C. per day.

Can I find deals for flights from Washington, D.C. to Knoxville that include hotel bookings?

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

How can I find direct flights from Washington, D.C. to Knoxville?

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

Can I find deals for business class flights from Washington, D.C. to Knoxville?

Yes. Cheapflights offers flight deals from Washington, D.C. 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.

$40+ Flights from Washington, D.C. to Knoxville

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Cheapflights Tip: The best prices from Washington, D.C. to Knoxville McGhee Tyson are usually found in January or March, booked 64 days in advance, depart on a Saturday or Wednesday and return on a Thursday

Cheap flight deals from Washington, D.C. to Knoxville

Round-trip from	$119 (Booking.com)
One-way from	$43 (Mytrip)
Popular in	October
Cheapest in	January
Average price	$316
Good round-trip deal	$195 or less
Good one-way deal	$43 or less

From Washington, D.C. (WAS) to Knoxville McGhee Tyson

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One-way flight from Washington, D.C. (WAS) to Knoxville McGhee Tyson

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Highest demand for flights based on searches. 8% potential increase in price ($29 potential increase over avg. RT price).

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Cheapest flight prices on average. 1% potential price decrease ($7 potential savings vs. average RT price).

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Average for round-trip flights in July 2025

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Price to beat on a round-trip flight from Washington, D.C. (WAS) to Knoxville McGhee Tyson.

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Price to beat on a one-way flight from Washington, D.C. (WAS) to Knoxville McGhee Tyson.

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Find flight deals from Washington, D.C. to Knoxville

Cheapest flights from Washington, D.C. to Knoxville
Explore the most affordable flight options available from Washington, D.C. to Knoxville. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 3, 2025.

Fri 10/109:36 pmIAD - TYS

Nonstop1h 40mAllegiant Air

Mon 10/137:02 pmTYS - IAD

Nonstop1h 44mAllegiant Air

Deal found 7/3

$113

Mon 8/118:30 amIAD - TYS

1 stop12h 40mMultiple Airlines

Mon 8/1812:45 pmTYS - IAD

Nonstop1h 38mMultiple Airlines

Deal found 7/2

$183

Sat 8/303:00 pmDCA - TYS

Nonstop1h 51mAmerican Airlines

Tue 9/26:13 amTYS - DCA

Nonstop1h 46mAmerican Airlines

Deal found 7/3

$184

Tue 7/297:10 pmIAD - TYS

Nonstop1h 47mUnited Airlines

Sun 8/35:45 amTYS - IAD

Nonstop1h 41mUnited Airlines

Deal found 7/3

$189

Wed 9/179:57 pmBWI - TYS

1 stop14h 33mMultiple Airlines

Fri 9/191:22 pmTYS - BWI

1 stop7h 40mMultiple Airlines

Deal found 7/3

$203

Sat 8/306:59 amDCA - TYS

1 stop3h 28mDelta

Tue 9/25:19 pmTYS - DCA

1 stop5h 37mDelta

Deal found 7/3

$204

Wed 7/307:02 amIAD - TYS

1 stop4h 06mDelta

Thu 8/72:36 pmTYS - IAD

1 stop4h 05mDelta

Deal found 7/3

$209

Fri 10/317:45 pmBWI - TYS

1 stop4h 05mAmerican Airlines

Wed 11/124:10 pmTYS - BWI

1 stop3h 11mAmerican Airlines

Deal found 7/2

$214

Wed 7/306:53 amBWI - TYS

1 stop4h 15mDelta

Wed 8/612:03 pmTYS - BWI

1 stop5h 16mDelta

Deal found 7/3

$229

Thu 10/167:00 amDCA - TYS

1 stop12h 37mFrontier

Mon 10/208:22 pmTYS - DCA

1 stop25h 37mFrontier

Deal found 7/2

$281

Fri 7/253:30 pmDCA - TYS

1 stop7h 07mUnited Airlines

Mon 7/287:00 amTYS - DCA

1 stop5h 58mUnited Airlines

Deal found 7/2

$301

Best flights from Washington, D.C. to Knoxville
Discover carefully curated flight deals from Washington, D.C. to Knoxville that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 3, 2025.

Fri 8/293:13 pmIAD - TYS

Nonstop1h 34mAllegiant Air

Mon 9/112:45 pmTYS - IAD

Nonstop1h 38mAllegiant Air

Deal found 7/3

$119

Mon 8/118:30 amIAD - TYS

1 stop12h 40mMultiple Airlines

Mon 8/1812:45 pmTYS - IAD

Nonstop1h 38mMultiple Airlines

Deal found 7/2

$183

Sat 8/303:00 pmDCA - TYS

Nonstop1h 51mAmerican Airlines

Tue 9/26:13 amTYS - DCA

Nonstop1h 46mAmerican Airlines

Deal found 7/3

$184

Tue 7/297:10 pmIAD - TYS

Nonstop1h 47mUnited Airlines

Sun 8/35:45 amTYS - IAD

Nonstop1h 41mUnited Airlines

Deal found 7/3

$189

Sat 8/306:59 amDCA - TYS

1 stop3h 28mDelta

Tue 9/25:19 pmTYS - DCA

1 stop5h 37mDelta

Deal found 7/3

$204

Thu 8/287:00 amDCA - TYS

1 stop12h 41mFrontier

Sun 8/318:33 pmTYS - DCA

1 stop15h 38mFrontier

Deal found 7/1

$313

Wed 7/307:02 amIAD - TYS

1 stop4h 06mDelta

Thu 8/72:36 pmTYS - IAD

1 stop4h 05mDelta

Deal found 7/3

$209

Wed 7/167:10 amBWI - TYS

1 stop4h 56mMultiple Airlines

Wed 7/304:09 pmTYS - BWI

1 stop7h 25mMultiple Airlines

Deal found 7/2

$209

Wed 7/306:53 amBWI - TYS

1 stop4h 15mDelta

Wed 8/612:03 pmTYS - BWI

1 stop5h 16mDelta

Deal found 7/3

$229

Wed 7/165:39 pmIAD - TYS

1 stop4h 46mAmerican Airlines

Wed 7/309:05 amTYS - IAD

1 stop3h 44mAmerican Airlines

Deal found 7/1

$260

Wed 7/95:00 amBWI - TYS

1 stop5h 28mAmerican Airlines

Sat 7/128:22 pmTYS - BWI

1 stop4h 15mAmerican Airlines

Deal found 7/1

$269

Fri 7/253:30 pmDCA - TYS

1 stop7h 07mUnited Airlines

Mon 7/287:00 amTYS - DCA

1 stop5h 58mUnited Airlines

Deal found 7/2

$301

Last-minute flights from Washington, D.C. to Knoxville
Discover last-minute flight deals from Washington, D.C. to Knoxville. Data last updated July 3, 2025 and is based on user searches.

Tue 7/81:00 pmIAD - TYS

1 stop4h 32mDelta

Tue 7/155:57 pmTYS - IAD

1 stop5h 19mDelta

Deal found 7/1

$244

Tue 7/86:00 amDCA - TYS

1 stop5h 08mDelta

Tue 7/152:36 pmTYS - DCA

1 stop5h 08mDelta

Deal found 7/1

$244

Wed 7/98:14 pmDCA - TYS

Nonstop1h 46mAmerican Airlines

Wed 7/165:19 pmTYS - DCA

Nonstop1h 40mAmerican Airlines

Deal found 7/1

$224

Wed 7/910:25 amBWI - TYS

1 stop5h 25mAmerican Airlines

Wed 7/165:58 pmTYS - BWI

1 stop4h 17mAmerican Airlines

Deal found 7/1

$254

Wed 7/95:00 amBWI - TYS

1 stop5h 28mAmerican Airlines

Sat 7/128:22 pmTYS - BWI

1 stop4h 15mAmerican Airlines

Deal found 7/1

$269

Thu 7/105:35 amBWI - TYS

1 stop4h 15mDelta

Thu 7/177:43 pmTYS - BWI

1 stop5h 11mDelta

Deal found 7/1

$309

Thu 7/107:10 amBWI - TYS

1 stop7h 59mMultiple Airlines

Thu 7/108:54 pmTYS - BWI

1 stop13h 25mMultiple Airlines

Deal found 7/2

$346

Thu 7/107:00 amDCA - TYS

1 stop9h 29mFrontier

Thu 7/175:25 pmTYS - DCA

1 stop18h 39mFrontier

Deal found 7/2

$350

Fri 7/113:13 pmIAD - TYS

Nonstop1h 34mAllegiant Air

Mon 7/141:12 pmTYS - IAD

1 stop4h 51mAllegiant Air

Deal found 7/1

$153

Fri 7/111:19 pmIAD - TYS

1 stop5h 53mAmerican Airlines

Sat 7/128:22 pmTYS - IAD

1 stop3h 36mAmerican Airlines

Deal found 7/3

$269

Fri 7/113:13 pmIAD - TYS

Nonstop1h 34mMultiple Airlines

Mon 7/143:03 pmTYS - IAD

3 stops20h 23mMultiple Airlines

Deal found 7/1

$321

Fri 7/1110:25 amDCA - TYS

1 stop6h 40mUnited Airlines

Sun 7/137:00 amTYS - DCA

1 stop4h 59mUnited Airlines

Deal found 7/1

$332

One-way flights from Washington, D.C. to Knoxville
Search for one-way flight options from Washington, D.C. to Knoxville. Find affordable one-way fares based on user searches. Data last updated July 3, 2025.

Mon 7/143:13 pmIAD - TYS

Nonstop1h 34mAllegiant Air

Deal found 7/2

$43

Tue 7/227:10 amBWI - TYS

1 stop5h 16mMultiple Airlines

Deal found 7/1

$93

Wed 7/308:45 amIAD - TYS

Nonstop1h 42mUnited Airlines

Deal found 7/1

$116

Wed 7/306:35 amIAD - TYS

1 stop3h 53mAmerican Airlines

Deal found 7/1

$126

Sat 8/165:40 amBWI - TYS

1 stop4h 47mDelta

Deal found 7/2

$126

Sat 11/89:00 amDCA - TYS

1 stop6h 05mDelta

Deal found 7/1

$126

Thu 8/287:00 amDCA - TYS

1 stop12h 41mFrontier

Deal found 7/1

$143

Mon 8/258:30 amIAD - TYS

1 stop12h 40mMultiple Airlines

Deal found 7/1

$150

Sat 7/195:26 pmBWI - TYS

1 stop23h 03mFrontier

Deal found 7/1

$188

Wed 7/238:48 amDCA - TYS

Nonstop1h 48mAmerican Airlines

Deal found 7/2

$214

Tue 7/226:00 amIAD - TYS

1 stop3h 50mDelta

Deal found 7/1

$224

Thu 8/285:02 amBWI - TYS

1 stop5h 28mAmerican Airlines

Deal found 7/1

$228

Cheapflights Fare Finder

Use the filters below to find and compare flights from Washington, D.C. to Knoxville that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.Knoxville

IAD - TYS

IADTYS

Washington, D.C. Dulles Intl

Fri 10/10

9:36 pm-11:16 pm

Nonstop1h 40m

Knoxville McGhee Tyson

Mon 10/13

7:02 pm-8:46 pm

Nonstop1h 44m

$113

Washington, D.C.Knoxville

IAD - TYS

IADTYS

Washington, D.C. Dulles Intl

Mon 8/11

8:30 am-9:10 pm

1 stop12h 40m

Knoxville McGhee Tyson

Mon 8/18

12:45 pm-2:23 pm

Nonstop1h 38m

$183

Washington, D.C.Knoxville

DCA - TYS

DCATYS

Washington, D.C. Reagan-National

Sat 8/30

3:00 pm-4:51 pm

Nonstop1h 51m

Knoxville McGhee Tyson

Tue 9/2

6:13 am-7:59 am

Nonstop1h 46m

$184

Washington, D.C.Knoxville

IAD - TYS

IADTYS

Washington, D.C. Dulles Intl

Tue 7/29

7:10 pm-8:57 pm

Nonstop1h 47m

Knoxville McGhee Tyson

Sun 8/3

5:45 am-7:26 am

Nonstop1h 41m

$189

BaltimoreKnoxville

BWI - TYS

BWITYS

Baltimore/Washington

Wed 9/17

9:57 pm-12:30 pm

1 stop14h 33m

Knoxville McGhee Tyson

Fri 9/19

1:22 pm-9:02 pm

1 stop7h 40m

$203

Washington, D.C.Knoxville

DCA - TYS

DCATYS

Washington, D.C. Reagan-National

Sat 8/30

6:59 am-10:27 am

1 stop3h 28m

Knoxville McGhee Tyson

Tue 9/2

5:19 pm-10:56 pm

1 stop5h 37m

$204

Washington, D.C.Knoxville

IAD - TYS

IADTYS

Washington, D.C. Dulles Intl

Wed 7/30

7:02 am-11:08 am

1 stop4h 06m

Knoxville McGhee Tyson

Thu 8/7

2:36 pm-6:41 pm

1 stop4h 05m

$209

BaltimoreKnoxville

BWI - TYS

BWITYS

Baltimore/Washington

Fri 10/31

5:00 am-9:32 am

1 stop4h 32m

Knoxville McGhee Tyson

Wed 11/12

11:46 am-4:29 pm

1 stop4h 43m

$214

BaltimoreKnoxville

BWI - TYS

BWITYS

Baltimore/Washington

Wed 7/30

6:53 am-11:08 am

1 stop4h 15m

Knoxville McGhee Tyson

Wed 8/6

12:03 pm-5:19 pm

1 stop5h 16m

$229

Washington, D.C.Knoxville

IAD - TYS

IADTYS

Washington, D.C. Dulles Intl

Fri 10/31

8:25 pm-11:50 pm

1 stop3h 25m

Knoxville McGhee Tyson

Wed 11/12

6:53 am-12:52 pm

1 stop5h 59m

$260

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/2

Showing 1-10 of 25 results

Best time to book a flight from Washington, D.C. to Knoxville

Have a flexible travel schedule? Discover the best time to fly to Knoxville from Washington, D.C. 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 Washington, D.C. to Knoxville

How far ahead should I book a flight from Washington, D.C. to Knoxville?

The best time to book flights from Washington, D.C. to Knoxville is 64 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 Washington, D.C. to Knoxville?

Currently, January is the cheapest month in which you can book a flight from Washington, D.C. to Knoxville (average of $296). Flying from Washington, D.C. 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 WAS to TYS?

It’s optimal to fly from Washington, D.C. to Knoxville in the afternoon. By choosing this option you can save up to 17% on the cost of your flight, compared to a flight at noon.

What is the cheapest day to fly from Washington, D.C. to Knoxville?

Travelers seeking maximum savings on their Washington, D.C. to Knoxville flight should consider departing on Monday afternoons when fares are most often at their lowest. Tuesday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Washington, D.C. to Knoxville

The most flights from WAS to TYS are scheduled on a Thursday (20 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (15 on average).

How much does it cost to fly round-trip from Washington, D.C. to Knoxville?

Reviews of airlines servicing Knoxville

Read through reviews of airlines operating flights from Washington, D.C. to Knoxville, such as Delta, United Airlines, and Allegiant Air. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very good

7,982 reviews

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

7,982 reviews

Delta

8.0

Very good

7,982 reviews

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

8,861 reviews

Delta

8.0

Very good

7,982 reviews

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

708 reviews

Delta

8.0

Very good

7,982 reviews

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

7,982 reviews

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

5.9

Fair

3,286 reviews

Delta

8.0

Very good

7,982 reviews

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

What airport do you fly into for flights to Knoxville from Washington, D.C.?
Knoxville McGhee Tyson (TYS), located 11.3 mi from the city center, is the airport you fly into when you book flights from Washington, D.C. to Knoxville. 4 airlines have flights to McGhee Tyson from Washington, D.C. on a regular basis. Booking flights from Washington, D.C. to Knoxville McGhee Tyson should not be difficult; the airport handles an average of 16 inbound flights from Washington, D.C. per day.
What are the cheapest airlines flying from Washington, D.C. to Knoxville round-trip?
Our cheapest airline available from Washington, D.C. to Knoxville is Allegiant Air. Our recent data shows that you can find tickets from as low as $119 on this airline. Additional options worth looking into are American Airlines and United Airlines, starting at $184 and $189 round-trip. You may be able to fly from Washington, D.C. to Knoxville for 61% less than the average price by searching for these airlines.
What are the cheapest airlines to fly from Washington, D.C. to Knoxville one-way?
The cheapest airline one-way is Allegiant Air, with whom users have recently found tickets for as low as $43. However, be on the lookout for offers from United Airlines and American Airlines, as they are both options that can get you from Washington, D.C. to Knoxville for a low price.
What are the most popular routes from Washington, D.C. to Knoxville?
When deciding which route to take from Washington, D.C. to Knoxville consider Washington, D.C. Dulles Intl - Knoxville McGhee Tyson, Washington, D.C. Reagan-National - Knoxville McGhee Tyson or Baltimore/Washington - Knoxville McGhee Tyson as they are the most popular.
What are the most reliable airlines from Washington, D.C. to Knoxville?
Consider Allegiant Air (83%), Avianca (72%) or Copa Airlines (72%) when booking your flight. These represent the most reliable airlines when flying from Washington, D.C. to Knoxville.
What are the cheapest flights from Washington, D.C. to Knoxville?
While on average a flight from Washington, D.C. to Knoxville is generally $187, our data shows the cheapest flight currently is $40. When looking at the most popular route, (Washington, D.C. Dulles Intl - Knoxville McGhee Tyson), you can expect to pay $62 for that flight.
Can I find deals for flights from Washington, D.C. to Knoxville that include hotel bookings?
Yes. In addition to deals on Washington, D.C. to Knoxville flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Washington, D.C. to Knoxville?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Washington, D.C. to Knoxville.
Can I find deals for business class flights from Washington, D.C. to Knoxville?
Yes. Cheapflights offers flight deals from Washington, D.C. 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 Washington, D.C. to Knoxville?
Currently, January is the cheapest month in which you can book a flight from Washington, D.C. to Knoxville (average of $296). Flying from Washington, D.C. 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

Morristown

Cherokee

Corbin

Alcoa

Oak Ridge

Murphy

Browse thousands of different options on Cheapflights for your next trip

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Other flights to Knoxville

Top 4 airlines flying from Washington, D.C. to Knoxville

Airline	Cheapest	Average	Flexibility	On-time
Allegiant Air	Cheapest$37	Average$80	FlexibilityNo cancel fee	On-time88%
Delta	Cheapest$198	Average$303	FlexibilityNo cancel fee	On-timeN/A
American Airlines	Cheapest$203	Average$339	FlexibilityNo cancel fee	On-time71%
United Airlines	Cheapest$219	Average$373	FlexibilityNo cancel fee	On-time69%

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$40+ Cheap flights from Washington, D.C. (WAS) to Knoxville (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 8/1. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Washington, D.C. to Knoxville with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheapflights Tip: The best prices from Washington, D.C. to Knoxville McGhee Tyson are usually found in January or March, booked 64 days in advance, depart on a Saturday or Wednesday and return on a Thursday

Cheap flight deals from Washington, D.C. to Knoxville

Round-trip from

One-way from

Popular in

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Cheapest flights from Washington, D.C. to KnoxvilleExplore the most affordable flight options available from Washington, D.C. to Knoxville. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 3, 2025.

Explore the most affordable flight options available from Washington, D.C. to Knoxville. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 3, 2025.

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Best time to book a flight from Washington, D.C. to Knoxville

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Everything you need to know about your flight from Washington, D.C. to Knoxville

How far ahead should I book a flight from Washington, D.C. to Knoxville?

Use this chart to determine the optimal time to book a round-trip flight from Washington, D.C. to Knoxville. Price data was last updated on June 27, 2025.

What is the cheapest month to book a flight from Washington, D.C. to Knoxville?

What is the cheapest time of day to fly from WAS to TYS?

Find hourly flight availability from Washington, D.C. 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 July 3, 2025.

What is the cheapest day to fly from Washington, D.C. to Knoxville?

Use this chart to determine the cheapest time to fly round-trip from Washington, D.C. to Knoxville. Price data was last updated on December 16, 2024.

Weekly flight availability from Washington, D.C. to Knoxville

How much does it cost to fly round-trip from Washington, D.C. to Knoxville?

Reviews of airlines servicing Knoxville

Read through reviews of airlines operating flights from Washington, D.C. to Knoxville, such as Delta, United Airlines, and Allegiant Air. 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 Washington, D.C. to Knoxville. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What airport do you fly into for flights to Knoxville from Washington, D.C.?

What are the cheapest airlines flying from Washington, D.C. to Knoxville round-trip?

What are the cheapest airlines to fly from Washington, D.C. to Knoxville one-way?

What are the most popular routes from Washington, D.C. to Knoxville?

What are the most reliable airlines from Washington, D.C. to Knoxville?

What are the cheapest flights from Washington, D.C. to Knoxville?

Can I find deals for flights from Washington, D.C. to Knoxville that include hotel bookings?

How can I find direct flights from Washington, D.C. to Knoxville?

Can I find deals for business class flights from Washington, D.C. to Knoxville?

What is the cheapest month to book a flight from Washington, D.C. to Knoxville?

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Alternative routes for Washington, D.C. to Knoxville

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Top 4 airlines flying from Washington, D.C. to Knoxville

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Cheapest flights from Washington, D.C. to Knoxville
Explore the most affordable flight options available from Washington, D.C. to Knoxville. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 3, 2025.