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 $128 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 58% 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 American Airlines and Delta, 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 popular airlines that fly from Washington, D.C. to Knoxville?

When booking a flight from Washington, D.C. to Knoxville, you may want to consider flying on American Airlines, Delta or United Airlines as they are the most popular for this route.

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 86% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $253 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 June tends to be the cheapest month to fly to Knoxville from Washington, D.C.. Users have commonly found prices around $311 for the month, but tickets can be as low as $80. 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 19 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.

$43+ 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 June or January, 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	$128 (Mytrip)
One-way from	$43 (Booking.com)
Popular in	October
Cheapest in	June
Average price	$271
Good round-trip deal	$146 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 ($6 potential savings vs. average RT price).

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Average for round-trip flights in June 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 June 12, 2025.

Fri 10/109:36 pmIAD - TYS

Nonstop1h 40mAllegiant Air

Fri 10/177:02 pmTYS - IAD

Nonstop1h 44mAllegiant Air

Deal found 6/10

$106

Wed 7/97:10 amBWI - TYS

1 stop4h 56mMultiple Airlines

Wed 7/166:40 amTYS - BWI

1 stop24h 50mMultiple Airlines

Deal found 6/11

$181

Sat 7/58:08 pmDCA - TYS

Nonstop1h 52mAmerican Airlines

Wed 7/96:34 amTYS - DCA

Nonstop1h 45mAmerican Airlines

Deal found 6/11

$184

Sat 7/1210:13 pmIAD - TYS

Nonstop1h 46mUnited Airlines

Fri 7/185:45 amTYS - IAD

Nonstop1h 41mUnited Airlines

Deal found 6/11

$189

Fri 8/298:30 amIAD - TYS

1 stop12h 40mMultiple Airlines

Mon 9/112:45 pmTYS - IAD

Nonstop1h 38mMultiple Airlines

Deal found 6/9

$201

Sat 7/56:05 amDCA - TYS

1 stop4h 04mDelta

Wed 7/94:02 pmTYS - DCA

1 stop3h 42mDelta

Deal found 6/11

$204

Tue 7/85:00 pmDCA - TYS

1 stop5h 35mUnited Airlines

Tue 7/157:00 amTYS - DCA

1 stop5h 58mUnited Airlines

Deal found 6/10

$209

Thu 6/266:00 amIAD - TYS

1 stop6h 03mDelta

Wed 7/165:12 pmTYS - IAD

1 stop5h 43mDelta

Deal found 6/12

$214

Sat 7/55:40 amBWI - TYS

1 stop5h 28mDelta

Tue 7/155:30 amTYS - BWI

1 stop5h 16mDelta

Deal found 6/10

$224

Tue 7/85:20 pmBWI - TYS

1 stop5h 15mUnited Airlines

Tue 7/151:56 pmTYS - BWI

1 stop7h 46mUnited Airlines

Deal found 6/10

$229

Wed 6/185:00 amBWI - TYS

1 stop3h 33mAmerican Airlines

Wed 6/255:57 pmTYS - BWI

1 stop6h 18mAmerican Airlines

Deal found 6/10

$254

Thu 8/76:34 amIAD - TYS

1 stop5h 43mAmerican Airlines

Sun 8/108:25 pmTYS - IAD

1 stop3h 34mAmerican Airlines

Deal found 6/11

$269

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 June 12, 2025.

Fri 7/253:13 pmIAD - TYS

Nonstop1h 34mAllegiant Air

Mon 7/281:12 pmTYS - IAD

1 stop4h 51mAllegiant Air

Deal found 6/9

$128

Wed 7/97:10 amBWI - TYS

1 stop4h 56mMultiple Airlines

Wed 7/166:40 amTYS - BWI

1 stop24h 50mMultiple Airlines

Deal found 6/11

$181

Sat 7/53:00 pmDCA - TYS

Nonstop1h 50mAmerican Airlines

Wed 7/95:19 pmTYS - DCA

Nonstop1h 40mAmerican Airlines

Deal found 6/12

$184

Sat 7/1210:13 pmIAD - TYS

Nonstop1h 46mUnited Airlines

Sat 7/195:45 amTYS - IAD

Nonstop1h 41mUnited Airlines

Deal found 6/11

$189

Sat 7/56:05 amDCA - TYS

1 stop4h 04mDelta

Wed 7/94:02 pmTYS - DCA

1 stop3h 42mDelta

Deal found 6/11

$204

Thu 9/117:00 amDCA - TYS

1 stop12h 41mFrontier

Sun 9/148:26 pmTYS - DCA

1 stop20h 35mFrontier

Deal found 6/10

$357

Fri 8/298:30 amIAD - TYS

1 stop12h 40mMultiple Airlines

Mon 9/112:45 pmTYS - IAD

Nonstop1h 38mMultiple Airlines

Deal found 6/9

$201

Tue 7/85:00 pmDCA - TYS

1 stop5h 35mUnited Airlines

Tue 7/157:00 amTYS - DCA

1 stop5h 58mUnited Airlines

Deal found 6/10

$209

Thu 6/266:00 amIAD - TYS

1 stop6h 03mDelta

Wed 7/165:12 pmTYS - IAD

1 stop5h 43mDelta

Deal found 6/12

$214

Sat 7/55:40 amBWI - TYS

1 stop5h 28mDelta

Tue 7/155:30 amTYS - BWI

1 stop5h 16mDelta

Deal found 6/10

$224

Tue 7/85:20 pmBWI - TYS

1 stop5h 15mUnited Airlines

Tue 7/151:56 pmTYS - BWI

1 stop7h 46mUnited Airlines

Deal found 6/10

$229

Thu 8/76:34 amIAD - TYS

1 stop5h 43mAmerican Airlines

Sun 8/108:25 pmTYS - IAD

1 stop3h 34mAmerican Airlines

Deal found 6/11

$269

Last-minute flights from Washington, D.C. to Knoxville
Discover last-minute flight deals from Washington, D.C. to Knoxville. Data last updated June 12, 2025 and is based on user searches.

Tue 6/176:00 amDCA - TYS

1 stop5h 08mDelta

Tue 6/246:10 amTYS - DCA

1 stop6h 30mDelta

Deal found 6/9

$264

Tue 6/172:15 pmBWI - TYS

1 stop21h 53mMultiple Airlines

Thu 6/199:04 pmTYS - BWI

1 stop22h 29mMultiple Airlines

Deal found 6/10

$321

Tue 6/1711:10 amDCA - TYS

2 stops11h 30mUnited Airlines

Tue 6/241:56 pmTYS - DCA

1 stop5h 06mUnited Airlines

Deal found 6/9

$601

Tue 6/1711:19 amBWI - TYS

1 stop5h 38mUnited Airlines

Wed 6/187:25 amTYS - BWI

1 stop9h 00mUnited Airlines

Deal found 6/11

$700

Wed 6/188:45 amIAD - TYS

Nonstop1h 42mUnited Airlines

Wed 7/165:45 amTYS - IAD

Nonstop1h 41mUnited Airlines

Deal found 6/11

$219

Wed 6/188:41 amDCA - TYS

Nonstop1h 55mAmerican Airlines

Wed 7/165:19 pmTYS - DCA

Nonstop1h 40mAmerican Airlines

Deal found 6/11

$219

Wed 6/185:00 amBWI - TYS

1 stop3h 33mAmerican Airlines

Wed 6/255:57 pmTYS - BWI

1 stop6h 18mAmerican Airlines

Deal found 6/10

$254

Wed 6/186:00 amIAD - TYS

1 stop4h 19mDelta

Wed 6/255:45 amTYS - IAD

1 stop3h 27mDelta

Deal found 6/10

$264

Wed 6/186:55 amIAD - TYS

1 stop3h 21mAmerican Airlines

Wed 7/167:46 pmTYS - IAD

1 stop4h 12mAmerican Airlines

Deal found 6/11

$394

Fri 6/203:13 pmIAD - TYS

Nonstop1h 34mMultiple Airlines

Sat 6/218:10 amTYS - IAD

2 stops12h 42mMultiple Airlines

Deal found 6/11

$292

Fri 6/203:13 pmIAD - TYS

Nonstop1h 34mAllegiant Air

Sat 6/214:13 pmTYS - IAD

1 stop16h 18mAllegiant Air

Deal found 6/11

$315

Fri 6/208:00 amBWI - TYS

1 stop5h 47mDelta

Sat 6/215:34 pmTYS - BWI

1 stop5h 05mDelta

Deal found 6/11

$419

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 June 12, 2025.

Fri 6/273:13 pmIAD - TYS

Nonstop1h 34mAllegiant Air

Deal found 6/10

$43

Mon 6/308:10 pmDCA - TYS

Nonstop1h 40mAmerican Airlines

Deal found 6/10

$90

Sat 7/56:00 amIAD - TYS

1 stop4h 09mDelta

Deal found 6/11

$100

Sat 7/56:53 amBWI - TYS

1 stop4h 15mDelta

Deal found 6/10

$100

Sat 7/57:00 amDCA - TYS

1 stop4h 08mDelta

Deal found 6/10

$100

Thu 7/176:40 pmBWI - TYS

1 stop15h 31mMultiple Airlines

Deal found 6/11

$103

Mon 7/218:30 amIAD - TYS

1 stop12h 40mMultiple Airlines

Deal found 6/11

$149

Tue 7/11:20 pmIAD - TYS

Nonstop1h 38mUnited Airlines

Deal found 6/11

$160

Sun 8/177:00 amDCA - TYS

1 stop9h 29mFrontier

Deal found 6/10

$197

Sat 7/58:10 amBWI - TYS

1 stop6h 15mAmerican Airlines

Deal found 6/11

$204

Sun 9/146:49 pmBWI - TYS

1 stop24h 52mFrontier

Deal found 6/10

$207

Mon 8/117:44 amIAD - TYS

1 stop5h 19mAmerican Airlines

Deal found 6/12

$224

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

Fri 10/17

7:02 pm-8:46 pm

Nonstop1h 44m

$106

BaltimoreKnoxville

BWI - TYS

BWITYS

Baltimore/Washington

Wed 7/9

7:10 am-12:06 pm

1 stop4h 56m

Knoxville McGhee Tyson

Wed 7/16

6:40 am-7:30 am

1 stop24h 50m

$181

Washington, D.C.Knoxville

DCA - TYS

DCATYS

Washington, D.C. Reagan-National

Sat 7/5

8:08 pm-10:00 pm

Nonstop1h 52m

Knoxville McGhee Tyson

Wed 7/9

6:34 am-8:19 am

Nonstop1h 45m

$184

Washington, D.C.Knoxville

IAD - TYS

IADTYS

Washington, D.C. Dulles Intl

Sat 7/12

10:13 pm-11:59 pm

Nonstop1h 46m

Knoxville McGhee Tyson

Fri 7/18

5:45 am-7:26 am

Nonstop1h 41m

$189

Washington, D.C.Knoxville

IAD - TYS

IADTYS

Washington, D.C. Dulles Intl

Fri 8/29

8:30 am-9:10 pm

1 stop12h 40m

Knoxville McGhee Tyson

Mon 9/1

12:45 pm-2:23 pm

Nonstop1h 38m

$201

Washington, D.C.Knoxville

DCA - TYS

DCATYS

Washington, D.C. Reagan-National

Sat 7/5

6:05 am-10:09 am

1 stop4h 04m

Knoxville McGhee Tyson

Wed 7/9

4:02 pm-10:42 pm

1 stop6h 40m

$204

Washington, D.C.Knoxville

DCA - TYS

DCATYS

Washington, D.C. Reagan-National

Tue 7/8

5:00 pm-10:35 pm

1 stop5h 35m

Knoxville McGhee Tyson

Tue 7/15

7:00 am-12:58 pm

1 stop5h 58m

$209

Washington, D.C.Knoxville

IAD - TYS

IADTYS

Washington, D.C. Dulles Intl

Thu 6/26

6:00 am-12:03 pm

1 stop6h 03m

Knoxville McGhee Tyson

Wed 7/16

5:12 pm-10:55 pm

1 stop5h 43m

$214

BaltimoreKnoxville

BWI - TYS

BWITYS

Baltimore/Washington

Sat 7/5

5:40 am-11:08 am

1 stop5h 28m

Knoxville McGhee Tyson

Tue 7/15

5:30 am-10:46 am

1 stop5h 16m

$224

BaltimoreKnoxville

BWI - TYS

BWITYS

Baltimore/Washington

Tue 7/8

5:20 pm-10:35 pm

1 stop5h 15m

Knoxville McGhee Tyson

Tue 7/15

1:56 pm-9:42 pm

1 stop7h 46m

$229

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

Showing 1-10 of 29 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 Monday (20 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (16 on average).

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

To help decide which airline to fly from Washington, D.C. to Knoxville, see what other customers have to say about Delta, United Airlines and Allegiant Air. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very good

7,946 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

7,946 reviews

Delta

8.0

Very good

7,946 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

8,790 reviews

Delta

8.0

Very good

7,946 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

725 reviews

Delta

8.0

Very good

7,946 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

7,946 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

6.0

Okay

3,295 reviews

Delta

8.0

Very good

7,946 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 19 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 $128 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 58% 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 American Airlines and Delta, 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.
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

Maryville

Oak Ridge

Alcoa

Murphy

Browse thousands of different options on Cheapflights for your next trip

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$299	FlexibilityNo cancel fee	On-timeN/A
American Airlines	Cheapest$208	Average$346	FlexibilityNo cancel fee	On-time71%
United Airlines	Cheapest$219	Average$364	FlexibilityNo cancel fee	On-time69%

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$43+ 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 6/27. 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 June or January, 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

Cheapest in

Average price

Good round-trip deal

Good one-way deal

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

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 June 12, 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 June 12, 2025.

Cheapflights Fare Finder

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

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.

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?

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 9, 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 June 12, 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

Rainfall in Knoxville by month

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Temperature in Knoxville by month

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Reviews of airlines servicing Knoxville

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?

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 June 12, 2025.