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 $132 on this airline. Additional options worth looking into are United Airlines and American Airlines, starting at $189 and $189 round-trip. Allegiant Air is priced at 53% 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 $51 on Allegiant Air. Other airlines that offer cheap prices include American Airlines from $90 and Frontier from $145 one-way.

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.

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).

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

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

While on average a flight from Knoxville to Washington, D.C. is generally $1,725, our data shows the cheapest flight currently is $123. When looking at the most popular route, (Knoxville McGhee Tyson - Washington, D.C. Dulles Intl), you can expect to pay $80 for that flight.

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

The top 3 most reliable airlines when flying from Knoxville to Washington, D.C. are Allegiant Air (100%), Ethiopian Air (97%) and Copa Airlines (90%).

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 74%.

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 30 days before your planned departure. Booking around this time can save you about 55% 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, July can be a great choice for travel to Washington, D.C.. Flights to Washington, D.C. from Knoxville in July are about $286 on average during July, but can be found for as low as $80.

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 23 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.

$51+ Flights from Knoxville to Washington, D.C.

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Cheapflights Tip: The best prices from Knoxville McGhee Tyson to Washington, D.C. are usually found in July or May, 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	$132 (Mytrip)
One-way from	$51 (Kiwi.com)
Popular in	February
Cheapest in	July
Average price	$298
Good round-trip deal	$253 or less
Good one-way deal	$199 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. 10% potential increase in price ($32 potential increase over avg. RT price).

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Cheapest flight prices on average. 1% potential price decrease ($4 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 30, 2025.

Sat 12/272:23 pmTYS - IAD

Nonstop1h 44mAllegiant Air

Wed 12/312:35 pmIAD - TYS

Nonstop1h 40mAllegiant Air

Deal found 6/27

$127

Fri 8/1512:45 pmTYS - IAD

Nonstop1h 38mMultiple Airlines

Fri 8/228:30 amIAD - TYS

1 stop12h 40mMultiple Airlines

Deal found 6/27

$184

Sat 7/265:45 amTYS - IAD

Nonstop1h 41mUnited Airlines

Tue 7/298:45 amIAD - TYS

Nonstop1h 42mUnited Airlines

Deal found 6/29

$189

Fri 8/1510:36 amTYS - DCA

Nonstop1h 39mAmerican Airlines

Mon 8/188:19 amDCA - TYS

Nonstop1h 47mAmerican Airlines

Deal found 6/28

$189

Sat 7/266:08 pmTYS - BWI

1 stop5h 26mMultiple Airlines

Tue 7/297:10 amBWI - TYS

1 stop5h 16mMultiple Airlines

Deal found 6/29

$195

Thu 8/2811:54 amTYS - IAD

1 stop4h 36mDelta

Sun 8/3112:39 pmIAD - TYS

1 stop4h 40mDelta

Deal found 6/28

$204

Thu 8/285:45 amTYS - DCA

1 stop5h 35mDelta

Sun 8/316:00 amDCA - TYS

1 stop5h 34mDelta

Deal found 6/28

$204

Fri 8/157:35 pmTYS - BWI

1 stop3h 34mAmerican Airlines

Mon 8/186:00 amBWI - TYS

1 stop5h 22mAmerican Airlines

Deal found 6/28

$229

Wed 7/162:36 pmTYS - BWI

1 stop4h 11mDelta

Wed 7/231:52 pmBWI - TYS

1 stop5h 09mDelta

Deal found 6/28

$234

Tue 7/295:05 amTYS - IAD

1 stop3h 28mAmerican Airlines

Tue 7/291:06 pmIAD - TYS

1 stop4h 56mAmerican Airlines

Deal found 6/28

$251

Sun 8/248:33 pmTYS - DCA

1 stop15h 38mFrontier

Thu 8/287:00 amDCA - TYS

1 stop12h 41mFrontier

Deal found 6/30

$281

Wed 8/277:00 amTYS - DCA

2 stops8h 22mUnited Airlines

Sat 8/305:00 pmDCA - TYS

1 stop5h 37mUnited Airlines

Deal found 6/30

$369

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 30, 2025.

Mon 7/281:12 pmTYS - IAD

1 stop4h 51mAllegiant Air

Mon 8/43:13 pmIAD - TYS

Nonstop1h 34mAllegiant Air

Deal found 6/29

$132

Fri 8/1512:45 pmTYS - IAD

Nonstop1h 38mMultiple Airlines

Fri 8/228:30 amIAD - TYS

1 stop12h 40mMultiple Airlines

Deal found 6/27

$184

Sat 7/265:45 amTYS - IAD

Nonstop1h 41mUnited Airlines

Tue 7/298:45 amIAD - TYS

Nonstop1h 42mUnited Airlines

Deal found 6/29

$189

Fri 8/1510:36 amTYS - DCA

Nonstop1h 39mAmerican Airlines

Mon 8/188:19 amDCA - TYS

Nonstop1h 47mAmerican Airlines

Deal found 6/28

$189

Thu 8/2811:54 amTYS - IAD

1 stop4h 36mDelta

Sun 8/3112:39 pmIAD - TYS

1 stop4h 40mDelta

Deal found 6/28

$204

Sun 8/248:33 pmTYS - DCA

1 stop15h 38mFrontier

Thu 8/287:00 amDCA - TYS

1 stop12h 41mFrontier

Deal found 6/28

$281

Sat 7/266:08 pmTYS - BWI

1 stop5h 26mMultiple Airlines

Tue 7/297:10 amBWI - TYS

1 stop5h 16mMultiple Airlines

Deal found 6/29

$195

Thu 8/285:45 amTYS - DCA

1 stop5h 35mDelta

Sun 8/316:00 amDCA - TYS

1 stop5h 34mDelta

Deal found 6/28

$204

Fri 8/157:35 pmTYS - BWI

1 stop3h 34mAmerican Airlines

Fri 8/227:56 amBWI - TYS

1 stop3h 26mAmerican Airlines

Deal found 6/27

$229

Wed 7/162:36 pmTYS - BWI

1 stop4h 11mDelta

Wed 7/231:52 pmBWI - TYS

1 stop5h 09mDelta

Deal found 6/28

$234

Tue 7/295:05 amTYS - IAD

1 stop3h 28mAmerican Airlines

Tue 7/291:06 pmIAD - TYS

1 stop4h 56mAmerican Airlines

Deal found 6/28

$251

Wed 8/277:00 amTYS - DCA

2 stops8h 22mUnited Airlines

Sat 8/305:00 pmDCA - TYS

1 stop5h 37mUnited Airlines

Deal found 6/30

$369

Last-minute flights from Knoxville to Washington, D.C.
Discover last-minute flight deals from Knoxville to Washington, D.C.. Data last updated June 30, 2025 and is based on user searches.

Sat 7/57:29 amTYS - DCA

Nonstop1h 45mAmerican Airlines

Tue 7/88:14 pmDCA - TYS

Nonstop1h 46mAmerican Airlines

Deal found 6/28

$214

Sat 7/57:00 amTYS - DCA

1 stop4h 00mDelta

Mon 7/710:19 amDCA - TYS

1 stop4h 48mDelta

Deal found 6/28

$404

Sat 7/57:00 amTYS - DCA

2 stops12h 09mUnited Airlines

Mon 7/73:30 pmDCA - TYS

1 stop7h 05mUnited Airlines

Deal found 6/28

$693

Sun 7/65:45 amTYS - BWI

1 stop5h 07mDelta

Thu 7/106:53 amBWI - TYS

1 stop4h 15mDelta

Deal found 6/28

$643

Sun 7/65:45 amTYS - IAD

1 stop3h 27mDelta

Thu 7/106:00 amIAD - TYS

1 stop5h 08mDelta

Deal found 6/28

$747

Thu 7/105:45 amTYS - IAD

Nonstop1h 41mUnited Airlines

Sun 7/1310:13 pmIAD - TYS

Nonstop1h 46mUnited Airlines

Deal found 6/28

$224

Thu 7/107:52 pmTYS - BWI

1 stop4h 45mAmerican Airlines

Mon 7/145:00 amBWI - TYS

1 stop5h 28mAmerican Airlines

Deal found 6/28

$254

Thu 7/107:52 pmTYS - IAD

1 stop4h 06mAmerican Airlines

Mon 7/141:19 pmIAD - TYS

1 stop5h 53mAmerican Airlines

Deal found 6/28

$269

Thu 7/103:11 pmTYS - BWI

1 stop8h 23mMultiple Airlines

Sun 7/131:21 pmBWI - TYS

2 stops20h 50mMultiple Airlines

Deal found 6/28

$303

Thu 7/103:11 pmTYS - IAD

3 stops20h 09mMultiple Airlines

Mon 7/143:13 pmIAD - TYS

Nonstop1h 34mMultiple Airlines

Deal found 6/28

$361

Thu 7/105:25 pmTYS - DCA

1 stop18h 39mFrontier

Sun 7/137:00 amDCA - TYS

1 stop9h 29mFrontier

Deal found 6/28

$455

Thu 7/177:52 pmTYS - BWI

1 stop4h 45mAmerican Airlines

Sat 7/195:00 amBWI - TYS

1 stop3h 34mAmerican Airlines

Deal found 6/30

$239

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 30, 2025.

Fri 7/1812:45 pmTYS - IAD

Nonstop1h 38mAllegiant Air

Deal found 6/30

$51

Sat 7/57:29 amTYS - DCA

Nonstop1h 45mAmerican Airlines

Deal found 6/28

$90

Fri 8/156:00 amTYS - BWI

1 stop5h 44mMultiple Airlines

Deal found 6/28

$109

Thu 7/175:25 pmTYS - DCA

1 stop18h 39mFrontier

Deal found 6/29

$145

Thu 7/35:25 pmTYS - BWI

1 stop23h 00mFrontier

Deal found 6/29

$173

Sat 7/58:22 pmTYS - BWI

1 stop4h 15mAmerican Airlines

Deal found 6/28

$190

Tue 7/154:55 pmTYS - IAD

3 stops18h 25mMultiple Airlines

Deal found 6/29

$193

Sun 9/288:26 pmTYS - IAD

2 stops16h 20mFrontier

Deal found 6/30

$223

Mon 9/156:08 pmTYS - IAD

1 stop6h 05mDelta

Deal found 6/29

$224

Mon 7/214:02 pmTYS - BWI

1 stop6h 46mDelta

Deal found 6/30

$228

Mon 9/155:45 amTYS - IAD

Nonstop1h 43mUnited Airlines

Deal found 6/29

$244

Tue 7/159:05 amTYS - IAD

1 stop3h 31mAmerican Airlines

Deal found 6/29

$294

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

Mon 7/28

1:12 pm-6:03 pm

1 stop4h 51m

Washington, D.C. Dulles Intl

Mon 8/4

3:13 pm-4:47 pm

Nonstop1h 34m

$132

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

Fri 8/22

8:30 am-9:10 pm

1 stop12h 40m

$184

KnoxvilleWashington, D.C.

TYS - IAD

TYSIAD

Knoxville McGhee Tyson

Sat 7/26

5:45 am-7:26 am

Nonstop1h 41m

Washington, D.C. Dulles Intl

Tue 7/29

8:45 am-10:27 am

Nonstop1h 42m

$189

KnoxvilleWashington, D.C.

TYS - DCA

TYSDCA

Knoxville McGhee Tyson

Fri 8/15

10:36 am-12:15 pm

Nonstop1h 39m

Washington, D.C. Reagan-National

Mon 8/18

8:19 am-10:06 am

Nonstop1h 47m

$189

KnoxvilleBaltimore

TYS - BWI

TYSBWI

Knoxville McGhee Tyson

Sat 7/26

6:08 pm-11:34 pm

1 stop5h 26m

Baltimore/Washington

Tue 7/29

7:10 am-12:26 pm

1 stop5h 16m

$195

KnoxvilleWashington, D.C.

TYS - IAD

TYSIAD

Knoxville McGhee Tyson

Thu 8/28

11:54 am-4:30 pm

1 stop4h 36m

Washington, D.C. Dulles Intl

Sun 8/31

12:39 pm-5:19 pm

1 stop4h 40m

$204

KnoxvilleWashington, D.C.

TYS - DCA

TYSDCA

Knoxville McGhee Tyson

Thu 8/28

5:45 am-11:20 am

1 stop5h 35m

Washington, D.C. Reagan-National

Sun 8/31

6:00 am-11:34 am

1 stop5h 34m

$204

KnoxvilleBaltimore

TYS - BWI

TYSBWI

Knoxville McGhee Tyson

Fri 8/15

7:35 pm-11:09 pm

1 stop3h 34m

Baltimore/Washington

Wed 8/20

7:00 am-1:03 pm

1 stop6h 03m

$229

KnoxvilleBaltimore

TYS - BWI

TYSBWI

Knoxville McGhee Tyson

Wed 7/16

2:36 pm-6:47 pm

1 stop4h 11m

Baltimore/Washington

Wed 7/23

1:52 pm-7:01 pm

1 stop5h 09m

$234

KnoxvilleWashington, D.C.

TYS - IAD

TYSIAD

Knoxville McGhee Tyson

Tue 7/29

5:05 am-8:33 am

1 stop3h 28m

Washington, D.C. Dulles Intl

Tue 7/29

1:06 pm-6:02 pm

1 stop4h 56m

$251

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/30

Showing 1-10 of 26 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 $309). Flying from Knoxville to Washington, D.C. in July is currently the most expensive (average of $345). 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 Wednesday 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 Monday (25 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (21 on average).

Reviews of airlines servicing Washington, D.C.

See what other customers who have flown with Delta, United Airlines, and American Airlines from Knoxville to Washington, D.C. have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very good

7,973 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

7,973 reviews

Delta

8.0

Very good

7,973 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

8,852 reviews

Delta

8.0

Very good

7,973 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

7,973 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

7.2

Good

711 reviews

Delta

8.0

Very good

7,973 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

3,290 reviews

Delta

8.0

Very good

7,973 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 23 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 $132 on this airline. Additional options worth looking into are United Airlines and American Airlines, starting at $189 and $189 round-trip. Allegiant Air is priced at 53% 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 $51 on Allegiant Air. Other airlines that offer cheap prices include American Airlines from $90 and Frontier from $145 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 - Baltimore/Washington or Knoxville McGhee Tyson - Washington, D.C. Reagan-National when deciding on the best route from Knoxville to Washington, D.C..
What are the most reliable airlines from Knoxville to Washington, D.C.?
The top 3 most reliable airlines when flying from Knoxville to Washington, D.C. are Allegiant Air (100%), Ethiopian Air (97%) and Copa Airlines (90%).
What are the cheapest flights from Knoxville to Washington, D.C.?
While on average a flight from Knoxville to Washington, D.C. is generally $1,725, our data shows the cheapest flight currently is $123. When looking at the most popular route, (Knoxville McGhee Tyson - Washington, D.C. Dulles Intl), you can expect to pay $80 for that flight.
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 $309). Flying from Knoxville to Washington, D.C. in July is currently the most expensive (average of $345). 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.

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

Airline	Cheapest	Average	Flexibility	On-time
American Airlines	Cheapest$189	Average$305	FlexibilityNo cancel fee	On-time71%
Delta	Cheapest$200	Average$256	FlexibilityNo cancel fee	On-timeN/A
United Airlines	Cheapest$220	Average$342	FlexibilityNo cancel fee	On-time69%

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$51+ 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 7/18. 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 July or May, 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 30, 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 30, 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 27, 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 30, 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.

Reviews of airlines servicing Washington, D.C.

See what other customers who have flown with Delta, United Airlines, and American Airlines from Knoxville to Washington, D.C. have to say. You can also see how each airline compares 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?

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

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

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

What are the cheapest flights 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 30, 2025.