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

Our cheapest airline available from Knoxville to Washington, D.C. is Allegiant Air. Our recent data shows that you can find tickets from as low as $148 on this airline. Additional options worth looking into are American Airlines and United Airlines, starting at $186 and $189 round-trip. Allegiant Air is priced at 48% lower than the current average price of a flight leaving 3 months from now.

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

One-way options have recently been found by users for as low as $90 on United Airlines. Other airlines that offer cheap prices include American Airlines from $90 and Allegiant Air from $97 one-way.

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

Most travelers choose Knoxville McGhee Tyson - Washington, D.C. Dulles Intl, Knoxville McGhee Tyson - Washington, D.C. Reagan-National or Knoxville McGhee Tyson - Baltimore/Washington when deciding on the best route from Knoxville to Washington, D.C..

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

Wednesday is generally a great day to depart. Flying on this day could help you save up to 71%.

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

To save on the cost of your flight from Knoxville to Washington, D.C., book at least 39 days before your planned departure. Booking around this time can save you about 97% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $246 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $393.

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

Due to multiple factors, expect to potentially pay more when booking in February. For low rates, May can be a great choice for travel to Washington, D.C.. Flights to Washington, D.C. from Knoxville in May are about $288 on average during May, but can be found for as low as $110.

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

If you book a flight to Washington, D.C. from Knoxville, you will be flying from McGhee Tyson, which is the city’s only airport. Knoxville McGhee Tyson (TYS) is located 11.3 mi from the center of Knoxville. There are 22 flights from McGhee Tyson to Washington, D.C. per day from 3 different airlines.

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

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

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

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

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

Yes. Cheapflights offers flight deals from Knoxville to Washington, D.C. by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$66+ Flights from Knoxville to Washington, D.C.

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Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

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Cheapflights Tip: The best prices from Knoxville McGhee Tyson to Washington, D.C. are usually found in May or December, booked 75 days in advance, depart on a Thursday or Friday and return on a Saturday

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

Round-trip from	$148 (Mytrip)
One-way from	$90 (United Airlines)
Popular in	February
Cheapest in	May
Average price	$293
Good round-trip deal	$242 or less
Good one-way deal	$240 or less

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

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

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Highest demand for flights based on searches. 9% potential increase in price ($30 potential increase over avg. RT price).

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Cheapest flight prices on average. 1% potential price decrease ($3 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 Knoxville McGhee Tyson to Washington, D.C. (WAS).

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

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

Cheapest flights from Knoxville to Washington, D.C.
Explore the most affordable flight options available from Knoxville to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.

Fri 7/1812:45 pmTYS - IAD

Nonstop1h 38mAllegiant Air

Sun 7/209:05 pmIAD - TYS

1 stop16h 18mAllegiant Air

Deal found 6/11

$148

Fri 7/411:06 amTYS - DCA

Nonstop1h 42mAmerican Airlines

Sun 7/68:45 amDCA - TYS

Nonstop1h 56mAmerican Airlines

Deal found 6/10

$186

Fri 8/87:35 pmTYS - IAD

Nonstop1h 35mUnited Airlines

Sun 8/1010:13 pmIAD - TYS

Nonstop1h 46mUnited Airlines

Deal found 6/10

$189

Fri 8/1512:45 pmTYS - IAD

Nonstop1h 38mMultiple Airlines

Sun 8/1711:04 amIAD - TYS

2 stops27h 40mMultiple Airlines

Deal found 6/10

$191

Fri 7/46:00 pmTYS - DCA

1 stop4h 59mDelta

Mon 7/78:59 amDCA - TYS

1 stop6h 08mDelta

Deal found 6/12

$204

Sun 8/245:45 amTYS - IAD

1 stop3h 27mDelta

Sat 9/66:00 amIAD - TYS

1 stop4h 09mDelta

Deal found 6/11

$209

Fri 9/121:22 pmTYS - BWI

1 stop7h 08mMultiple Airlines

Sun 9/146:34 pmBWI - TYS

1 stop25h 08mMultiple Airlines

Deal found 6/10

$211

Thu 8/147:00 amTYS - DCA

1 stop4h 59mUnited Airlines

Mon 8/185:00 pmDCA - TYS

1 stop5h 35mUnited Airlines

Deal found 6/10

$214

Fri 7/44:09 pmTYS - BWI

1 stop4h 42mAmerican Airlines

Tue 7/85:00 amBWI - TYS

1 stop5h 28mAmerican Airlines

Deal found 6/9

$214

Fri 7/117:43 pmTYS - BWI

1 stop5h 11mDelta

Mon 7/1410:28 amBWI - TYS

1 stop4h 39mDelta

Deal found 6/10

$249

Thu 9/115:05 amTYS - IAD

1 stop3h 41mAmerican Airlines

Sun 9/148:13 pmIAD - TYS

1 stop3h 56mAmerican Airlines

Deal found 6/11

$269

Sun 8/175:25 pmTYS - DCA

1 stop18h 39mFrontier

Thu 8/217:00 amDCA - TYS

1 stop12h 41mFrontier

Deal found 6/12

$318

Best flights from Knoxville to Washington, D.C.
Discover carefully curated flight deals from Knoxville to Washington, D.C. that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 12, 2025.

Fri 7/1812:45 pmTYS - IAD

Nonstop1h 38mAllegiant Air

Sun 7/209:05 pmIAD - TYS

1 stop16h 18mAllegiant Air

Deal found 6/11

$148

Fri 7/411:06 amTYS - DCA

Nonstop1h 42mAmerican Airlines

Sun 7/68:45 amDCA - TYS

Nonstop1h 56mAmerican Airlines

Deal found 6/10

$186

Fri 8/87:35 pmTYS - IAD

Nonstop1h 35mUnited Airlines

Sun 8/1010:13 pmIAD - TYS

Nonstop1h 46mUnited Airlines

Deal found 6/10

$189

Fri 8/1512:45 pmTYS - IAD

Nonstop1h 38mMultiple Airlines

Sun 8/1711:04 amIAD - TYS

2 stops27h 40mMultiple Airlines

Deal found 6/10

$191

Sun 8/245:45 amTYS - IAD

1 stop3h 27mDelta

Sat 9/66:00 amIAD - TYS

1 stop4h 09mDelta

Deal found 6/11

$209

Sun 8/248:33 pmTYS - DCA

1 stop15h 38mFrontier

Thu 8/287:00 amDCA - TYS

1 stop12h 41mFrontier

Deal found 6/11

$340

Thu 7/36:00 pmTYS - DCA

1 stop4h 59mDelta

Mon 7/78:59 amDCA - TYS

1 stop6h 08mDelta

Deal found 6/10

$209

Thu 8/147:00 amTYS - DCA

1 stop4h 59mUnited Airlines

Mon 8/185:00 pmDCA - TYS

1 stop5h 35mUnited Airlines

Deal found 6/10

$214

Fri 7/44:09 pmTYS - BWI

1 stop4h 42mAmerican Airlines

Tue 7/85:00 amBWI - TYS

1 stop5h 28mAmerican Airlines

Deal found 6/9

$214

Thu 7/178:54 pmTYS - BWI

1 stop26h 40mMultiple Airlines

Wed 7/237:10 amBWI - TYS

1 stop4h 56mMultiple Airlines

Deal found 6/10

$217

Fri 7/117:43 pmTYS - BWI

1 stop5h 11mDelta

Mon 7/1410:28 amBWI - TYS

1 stop4h 39mDelta

Deal found 6/10

$249

Thu 9/115:05 amTYS - IAD

1 stop3h 41mAmerican Airlines

Sun 9/148:13 pmIAD - TYS

1 stop3h 56mAmerican Airlines

Deal found 6/12

$269

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

Tue 6/176:00 pmTYS - DCA

1 stop4h 59mDelta

Sat 6/217:55 amDCA - TYS

2 stops11h 23mDelta

Deal found 6/9

$558

Thu 6/195:45 amTYS - IAD

Nonstop1h 41mUnited Airlines

Sun 6/2210:13 pmIAD - TYS

Nonstop1h 46mUnited Airlines

Deal found 6/12

$249

Thu 6/195:12 pmTYS - DCA

Nonstop1h 38mAmerican Airlines

Sun 6/228:41 amDCA - TYS

Nonstop1h 55mAmerican Airlines

Deal found 6/12

$249

Thu 6/197:53 pmTYS - BWI

1 stop4h 23mAmerican Airlines

Sat 6/215:00 amBWI - TYS

1 stop3h 33mAmerican Airlines

Deal found 6/11

$269

Thu 6/195:45 amTYS - IAD

1 stop3h 27mDelta

Sun 6/226:00 amIAD - TYS

1 stop3h 55mDelta

Deal found 6/10

$289

Thu 6/197:00 amTYS - DCA

1 stop4h 59mUnited Airlines

Sun 6/2210:30 amDCA - TYS

1 stop6h 27mUnited Airlines

Deal found 6/10

$329

Thu 6/199:04 pmTYS - BWI

1 stop25h 53mMultiple Airlines

Sun 6/227:55 amBWI - TYS

2 stops24h 09mMultiple Airlines

Deal found 6/11

$342

Thu 6/195:25 pmTYS - IAD

2 stops16h 44mFrontier

Sat 6/217:25 pmIAD - TYS

2 stops21h 04mFrontier

Deal found 6/10

$684

Fri 6/2012:45 pmTYS - IAD

Nonstop1h 38mAllegiant Air

Mon 6/234:54 pmIAD - TYS

2 stops24h 31mAllegiant Air

Deal found 6/11

$215

Fri 6/2012:45 pmTYS - IAD

Nonstop1h 38mMultiple Airlines

Mon 6/2312:55 pmIAD - TYS

3 stops29h 03mMultiple Airlines

Deal found 6/11

$332

Fri 6/207:44 pmTYS - BWI

1 stop4h 45mDelta

Mon 6/237:43 pmBWI - TYS

1 stop4h 16mDelta

Deal found 6/11

$344

Fri 6/201:56 pmTYS - IAD

2 stops10h 03mAmerican Airlines

Mon 6/231:08 pmIAD - TYS

1 stop5h 53mAmerican Airlines

Deal found 6/11

$734

One-way flights from Knoxville to Washington, D.C.
Search for one-way flight options from Knoxville to Washington, D.C.. Find affordable one-way fares based on user searches. Data last updated June 12, 2025.

Wed 7/25:45 amTYS - IAD

Nonstop1h 41mUnited Airlines

Deal found 6/12

$90

Wed 7/26:35 amTYS - DCA

Nonstop1h 42mAmerican Airlines

Deal found 6/12

$90

Wed 7/93:36 pmTYS - IAD

1 stop16h 59mAllegiant Air

Deal found 6/11

$97

Wed 7/25:45 amTYS - IAD

1 stop6h 08mDelta

Deal found 6/10

$100

Wed 7/26:00 pmTYS - DCA

1 stop4h 59mDelta

Deal found 6/10

$100

Wed 7/27:53 pmTYS - BWI

1 stop4h 22mAmerican Airlines

Deal found 6/10

$100

Wed 7/96:40 amTYS - BWI

1 stop24h 50mMultiple Airlines

Deal found 6/11

$103

Sat 8/1611:32 amTYS - BWI

1 stop5h 48mDelta

Deal found 6/10

$126

Tue 7/17:53 pmTYS - IAD

1 stop4h 06mAmerican Airlines

Deal found 6/12

$140

Wed 7/28:30 amTYS - IAD

2 stops26h 38mMultiple Airlines

Deal found 6/9

$180

Sun 6/155:25 pmTYS - BWI

1 stop23h 00mFrontier

Deal found 6/11

$187

Thu 7/175:25 pmTYS - DCA

1 stop18h 39mFrontier

Deal found 6/10

$194

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

KnoxvilleWashington, D.C.

TYS - IAD

TYSIAD

Knoxville McGhee Tyson

Fri 7/18

12:45 pm-2:23 pm

Nonstop1h 38m

Washington, D.C. Dulles Intl

Sun 7/20

9:05 pm-1:23 pm

1 stop16h 18m

$148

KnoxvilleWashington, D.C.

TYS - DCA

TYSDCA

Knoxville McGhee Tyson

Fri 7/4

11:06 am-12:48 pm

Nonstop1h 42m

Washington, D.C. Reagan-National

Sun 7/6

8:45 am-10:41 am

Nonstop1h 56m

$186

KnoxvilleWashington, D.C.

TYS - IAD

TYSIAD

Knoxville McGhee Tyson

Fri 8/8

7:35 pm-9:10 pm

Nonstop1h 35m

Washington, D.C. Dulles Intl

Sun 8/10

10:13 pm-11:59 pm

Nonstop1h 46m

$189

KnoxvilleWashington, D.C.

TYS - IAD

TYSIAD

Knoxville McGhee Tyson

Fri 8/15

12:45 pm-2:23 pm

Nonstop1h 38m

Washington, D.C. Dulles Intl

Sun 8/17

11:04 am-2:44 pm

2 stops27h 40m

$191

KnoxvilleWashington, D.C.

TYS - DCA

TYSDCA

Knoxville McGhee Tyson

Fri 7/4

6:00 pm-10:59 pm

1 stop4h 59m

Washington, D.C. Reagan-National

Mon 7/7

8:59 am-3:07 pm

1 stop6h 08m

$204

KnoxvilleWashington, D.C.

TYS - IAD

TYSIAD

Knoxville McGhee Tyson

Sun 8/24

5:45 am-9:12 am

1 stop3h 27m

Washington, D.C. Dulles Intl

Sat 9/6

6:00 am-10:09 am

1 stop4h 09m

$209

KnoxvilleWashington, D.C.

TYS - DCA

TYSDCA

Knoxville McGhee Tyson

Thu 8/14

7:00 am-11:59 am

1 stop4h 59m

Washington, D.C. Reagan-National

Mon 8/18

5:00 pm-10:35 pm

1 stop5h 35m

$214

KnoxvilleBaltimore

TYS - BWI

TYSBWI

Knoxville McGhee Tyson

Fri 7/4

4:09 pm-8:51 pm

1 stop4h 42m

Baltimore/Washington

Tue 7/8

5:00 am-10:28 am

1 stop5h 28m

$214

KnoxvilleBaltimore

TYS - BWI

TYSBWI

Knoxville McGhee Tyson

Thu 7/17

8:54 pm-11:34 pm

1 stop26h 40m

Baltimore/Washington

Wed 7/23

7:10 am-12:06 pm

1 stop4h 56m

$217

KnoxvilleBaltimore

TYS - BWI

TYSBWI

Knoxville McGhee Tyson

Fri 7/11

7:43 pm-12:54 am

1 stop5h 11m

Baltimore/Washington

Mon 7/14

10:28 am-3:07 pm

1 stop4h 39m

$249

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

Showing 1-10 of 29 results

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

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

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

Booking 75 days in advance of your planned departure date is, on average, the best time to get cheap flights from Knoxville to Washington, D.C.. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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

Currently, August is the cheapest month in which you can book a flight from Knoxville to Washington, D.C. (average of $241). Flying from Knoxville to Washington, D.C. in March is currently the most expensive (average of $290). 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 TYS to WAS?

It’s typically best to fly out from Knoxville to Washington, D.C. in the afternoon. Doing so could potentially save you 70% on the flight price compared to flying at noon, which is usually more expensive.

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

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

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

The most flights from TYS to WAS are scheduled on a Tuesday (24 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (20 on average).

Rainfall in Washington, D.C. by month

In terms of precipitation, rainfall in Washington, D.C. ranges from 2.6 - 4.0 inches per month. May is typically the wettest month, when rainfall can reach 4.0 in. February is typically the driest time to visit Washington, D.C. when rainfall is around 2.6 in.

Temperature in Washington, D.C. by month

If weather is an important factor for your trip to Washington, D.C., 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 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

Reviews of airlines servicing Washington, D.C.

Get a feel of what it's like to fly with Delta, United Airlines and Allegiant Air from Knoxville to Washington, D.C. by reading reviews from past customers. Users have also rated airlines 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 from for flights from Knoxville to Washington, D.C.?
If you book a flight to Washington, D.C. from Knoxville, you will be flying from McGhee Tyson, which is the city’s only airport. Knoxville McGhee Tyson (TYS) is located 11.3 mi from the center of Knoxville. There are 22 flights from McGhee Tyson to Washington, D.C. per day from 3 different airlines.
What are the cheapest airlines flying from Knoxville to Washington, D.C. round-trip?
Our cheapest airline available from Knoxville to Washington, D.C. is Allegiant Air. Our recent data shows that you can find tickets from as low as $148 on this airline. Additional options worth looking into are American Airlines and United Airlines, starting at $186 and $189 round-trip. Allegiant Air is priced at 48% lower than the current average price of a flight leaving 3 months from now.
What are the cheapest airlines to fly from Knoxville to Washington, D.C. one-way?
One-way options have recently been found by users for as low as $90 on United Airlines. Other airlines that offer cheap prices include American Airlines from $90 and Allegiant Air from $97 one-way.
What are the most popular routes from Knoxville to Washington, D.C.?
Most travelers choose Knoxville McGhee Tyson - Washington, D.C. Dulles Intl, Knoxville McGhee Tyson - Washington, D.C. Reagan-National or Knoxville McGhee Tyson - Baltimore/Washington when deciding on the best route from Knoxville to Washington, D.C..
Can I find deals for flights from Knoxville to Washington, D.C. that include hotel bookings?
Yes. In addition to deals on Knoxville to Washington, D.C. flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Knoxville to Washington, D.C.?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Knoxville to Washington, D.C..
Can I find deals for business class flights from Knoxville to Washington, D.C.?
Yes. Cheapflights offers flight deals from Knoxville to Washington, D.C. 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 Knoxville to Washington, D.C.?
Currently, August is the cheapest month in which you can book a flight from Knoxville to Washington, D.C. (average of $241). Flying from Knoxville to Washington, D.C. in March is currently the most expensive (average of $290). 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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Gaithersburg

Fairfax

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Herndon

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Reston

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Springfield

Manassas

Dundalk

Browse thousands of different options on Cheapflights for your next trip

Top 3 airlines flying from Knoxville to Washington, D.C.

Airline	Cheapest	Average	Flexibility	On-time
American Airlines	Cheapest$189	Average$311	FlexibilityNo cancel fee	On-time71%
Delta	Cheapest$200	Average$256	FlexibilityNo cancel fee	On-timeN/A
United Airlines	Cheapest$226	Average$343	FlexibilityNo cancel fee	On-time69%

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$66+ Cheap flights from Knoxville (TYS) to Washington, D.C. (WAS)

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 6/16. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Knoxville to Washington, D.C. 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 Knoxville McGhee Tyson to Washington, D.C. are usually found in May or December, booked 75 days in advance, depart on a Thursday or Friday and return on a Saturday

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

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

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

Cheapest flights from Knoxville to Washington, D.C.Explore the most affordable flight options available from Knoxville to Washington, D.C.. 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 Knoxville to Washington, D.C.. 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 Knoxville to Washington, D.C. that are best for you.

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

Have a flexible travel schedule? Discover the best time to fly to Washington, D.C. from Knoxville with our price prediction graph.

Cheapflights Insights

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

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

Use this chart to determine the optimal time to book a round-trip flight from Knoxville to Washington, D.C.. Price data was last updated on June 9, 2025.

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

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

Find hourly flight availability from Knoxville to Washington, D.C.. 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 Knoxville to Washington, D.C.?

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

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

Rainfall in Washington, D.C. by month

Plan your trip to Washington, D.C. by taking into account the average rainfall totals by month.

Temperature in Washington, D.C. by month

Plan your trip to Washington, D.C. by taking into account the average temperature totals by month.

Reviews of airlines servicing Washington, D.C.

Get a feel of what it's like to fly with Delta, United Airlines and Allegiant Air from Knoxville to Washington, D.C. by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Knoxville to Washington, D.C.. 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 from for flights from Knoxville to Washington, D.C.?

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

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

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

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

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

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

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Alternative routes for Knoxville to Washington, D.C.

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Top 3 airlines flying from Knoxville to Washington, D.C.

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Cheapest flights from Knoxville to Washington, D.C.
Explore the most affordable flight options available from Knoxville to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.