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 $42 on this airline. Additional options worth looking into are American Airlines and Delta, starting at $189 and $200 round-trip. Allegiant Air is priced at 85% 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 $103 on Allegiant Air. Other airlines that offer cheap prices include United Airlines from $116 and American Airlines from $116 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 - Washington, D.C. Reagan-National or Knoxville McGhee Tyson - Baltimore/Washington 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 $1,661, our data shows the cheapest flight currently is $40. When looking at the most popular route, (Knoxville McGhee Tyson - Washington, D.C. Dulles Intl), you can expect to pay $86 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 Ethiopian Air (95%), Allegiant Air (83%) and Copa Airlines (78%).

What are the most popular airlines that fly from Knoxville to Washington, D.C.?

Before booking your flight from Knoxville to Washington, D.C. check out the most popular airlines for this route: Delta, Allegiant Air or United Airlines.

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 80%.

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 240% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $258 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $419.

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 November. 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 $283 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 18 flights from McGhee Tyson to Washington, D.C. per day from 4 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.

$84+ Cheap Flights from Knoxville to Washington, D.C.

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

Airfare is below average for this route at the moment. Knoxville to Washington, D.C. flights typically cost between $189 and $328 in October. The cheapest round-trip price found within the last 3 days was $90 on Allegiant Air (Oct 10-Oct 13).

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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 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	$90 (Gotogate)
Popular in	November
Cheapest in	July
Average price	$254
Good round-trip deal	$241 or less
Good one-way deal	$164 or less

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

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Highest demand for flights based on searches. 5% potential increase in price ($15 potential increase over avg. RT price).

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Cheapest flight prices on average. 1% potential price decrease ($5 potential savings vs. average RT price).

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Average for round-trip flights in August 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 August 14, 2025.

Fri 8/2212:45 pmTYS - IAD

Nonstop1h 38mAllegiant Air

Mon 8/253:13 pmIAD - TYS

Nonstop1h 34mAllegiant Air

Deal found 8/13

$84

Fri 10/107:02 pmTYS - IAD

Nonstop1h 44mAllegiant Air

Mon 10/139:36 pmIAD - TYS

Nonstop1h 40mAllegiant Air

Deal found 8/14

$90

Fri 9/129:55 amTYS - IAD

Nonstop1h 43mUnited Airlines

Sun 9/1410:11 pmIAD - TYS

Nonstop1h 46mUnited Airlines

Deal found 8/14

$189

Wed 9/35:20 pmTYS - DCA

Nonstop1h 39mAmerican Airlines

Tue 9/98:30 amDCA - TYS

Nonstop2h 07mAmerican Airlines

Deal found 8/12

$189

Fri 8/296:13 amTYS - DCA

Nonstop1h 46mAmerican Airlines

Tue 9/28:15 pmDCA - TYS

Nonstop1h 46mAmerican Airlines

Deal found 8/12

$194

Sat 9/64:31 pmTYS - BWI

1 stop6h 54mMultiple Airlines

Tue 9/97:49 pmBWI - TYS

1 stop19h 52mMultiple Airlines

Deal found 8/13

$196

Sat 8/307:25 pmTYS - IAD

Nonstop1h 43mUnited Airlines

Sun 8/317:10 pmIAD - TYS

Nonstop1h 46mUnited Airlines

Deal found 8/14

$199

Wed 8/275:12 pmTYS - DCA

Nonstop1h 40mAmerican Airlines

Sun 8/313:23 pmDCA - TYS

Nonstop1h 45mAmerican Airlines

Deal found 8/12

$199

Thu 8/2811:00 amTYS - IAD

1 stop9h 48mMultiple Airlines

Mon 9/13:13 pmIAD - TYS

Nonstop1h 34mMultiple Airlines

Deal found 8/13

$200

Fri 11/75:45 amTYS - IAD

Nonstop1h 43mUnited Airlines

Sun 11/910:15 pmIAD - TYS

Nonstop1h 44mUnited Airlines

Deal found 8/14

$208

Thu 9/115:45 amTYS - IAD

1 stop3h 24mDelta

Sun 9/146:00 amIAD - TYS

1 stop3h 44mDelta

Deal found 8/14

$209

Wed 9/35:45 amTYS - DCA

1 stop3h 26mDelta

Sat 9/66:59 amDCA - TYS

1 stop3h 28mDelta

Deal found 8/12

$209

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 August 14, 2025.

Fri 10/107:02 pmTYS - IAD

Nonstop1h 44mAllegiant Air

Mon 10/139:36 pmIAD - TYS

Nonstop1h 40mAllegiant Air

Deal found 8/12

$90

Fri 8/2912:45 pmTYS - IAD

Nonstop1h 38mMultiple Airlines

Fri 8/299:33 pmIAD - TYS

1 stop20h 35mMultiple Airlines

Deal found 8/12

$183

Wed 9/37:25 pmTYS - IAD

Nonstop1h 43mUnited Airlines

Sun 9/710:11 pmIAD - TYS

Nonstop1h 46mUnited Airlines

Deal found 8/12

$189

Sat 10/116:03 amTYS - DCA

Nonstop1h 42mAmerican Airlines

Mon 10/138:24 pmDCA - TYS

Nonstop1h 45mAmerican Airlines

Deal found 8/12

$189

Wed 9/1011:54 amTYS - BWI

1 stop5h 26mDelta

Mon 9/157:25 pmBWI - TYS

1 stop4h 19mDelta

Deal found 8/12

$229

Wed 9/107:25 pmTYS - IAD

Nonstop1h 43mUnited Airlines

Wed 9/178:45 amIAD - TYS

Nonstop1h 43mUnited Airlines

Deal found 8/13

$189

Thu 10/95:08 pmTYS - DCA

Nonstop1h 37mAmerican Airlines

Mon 10/138:24 pmDCA - TYS

Nonstop1h 45mAmerican Airlines

Deal found 8/13

$189

Sat 9/64:31 pmTYS - BWI

1 stop6h 54mMultiple Airlines

Tue 9/97:49 pmBWI - TYS

1 stop19h 52mMultiple Airlines

Deal found 8/13

$196

Thu 11/65:45 amTYS - IAD

Nonstop1h 43mUnited Airlines

Sun 11/910:15 pmIAD - TYS

Nonstop1h 44mUnited Airlines

Deal found 8/14

$189

Thu 10/910:43 amTYS - DCA

Nonstop1h 31mAmerican Airlines

Tue 10/148:19 amDCA - TYS

Nonstop1h 54mAmerican Airlines

Deal found 8/11

$189

Tue 9/235:45 amTYS - IAD

Nonstop1h 43mUnited Airlines

Tue 9/308:45 amIAD - TYS

Nonstop1h 44mUnited Airlines

Deal found 8/11

$189

Fri 10/245:08 pmTYS - DCA

Nonstop1h 37mAmerican Airlines

Mon 10/278:24 pmDCA - TYS

Nonstop1h 45mAmerican Airlines

Deal found 8/14

$189

Last-minute flights from Knoxville to Washington, D.C.
Discover last-minute flight deals from Knoxville to Washington, D.C.. Data last updated August 14, 2025 and is based on user searches.

Thu 8/219:55 amTYS - IAD

Nonstop1h 43mUnited Airlines

Sat 8/3012:55 pmIAD - TYS

Nonstop1h 45mUnited Airlines

Deal found 8/12

$224

Thu 8/215:45 amTYS - BWI

1 stop5h 27mDelta

Sat 8/306:59 pmBWI - TYS

1 stop4h 49mDelta

Deal found 8/12

$234

Thu 8/217:00 amTYS - DCA

1 stop7h 16mUnited Airlines

Sat 8/305:00 pmDCA - TYS

1 stop5h 37mUnited Airlines

Deal found 8/12

$244

Thu 8/216:13 amTYS - DCA

Nonstop1h 46mAmerican Airlines

Sat 8/303:00 pmDCA - TYS

Nonstop1h 51mAmerican Airlines

Deal found 8/12

$249

Fri 8/2212:45 pmTYS - IAD

Nonstop1h 38mAllegiant Air

Mon 8/253:13 pmIAD - TYS

Nonstop1h 34mAllegiant Air

Deal found 8/13

$84

Fri 8/2212:45 pmTYS - IAD

Nonstop1h 38mAllegiant Air

Sun 8/247:10 pmIAD - TYS

1 stop21h 12mAllegiant Air

Deal found 8/12

$196

Fri 8/2212:45 pmTYS - IAD

Nonstop1h 38mMultiple Airlines

Fri 8/229:33 pmIAD - TYS

1 stop20h 35mMultiple Airlines

Deal found 8/12

$217

Fri 8/225:45 amTYS - IAD

Nonstop1h 43mUnited Airlines

Wed 9/1710:11 pmIAD - TYS

Nonstop1h 46mUnited Airlines

Deal found 8/13

$219

Fri 8/221:22 pmTYS - IAD

1 stop7h 26mMultiple Airlines

Mon 8/253:13 pmIAD - TYS

Nonstop1h 34mMultiple Airlines

Deal found 8/13

$228

Fri 8/226:14 pmTYS - IAD

1 stop6h 07mDelta

Wed 9/176:00 amIAD - TYS

1 stop4h 56mDelta

Deal found 8/13

$239

Fri 8/227:16 pmTYS - BWI

1 stop5h 07mDelta

Wed 9/175:35 amBWI - TYS

1 stop4h 09mDelta

Deal found 8/13

$249

Sat 8/235:45 amTYS - IAD

Nonstop1h 43mUnited Airlines

Tue 8/2612:55 pmIAD - TYS

Nonstop1h 45mUnited Airlines

Deal found 8/13

$249

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 August 14, 2025.

Thu 9/119:24 amTYS - IAD

1 stop8h 57mAllegiant Air

Deal found 8/12

$103

Wed 9/104:31 pmTYS - BWI

1 stop6h 54mMultiple Airlines

Deal found 8/11

$103

Tue 8/263:22 pmTYS - BWI

1 stop20h 22mMultiple Airlines

Deal found 8/11

$113

Sat 9/139:31 pmTYS - IAD

1 stop20h 43mMultiple Airlines

Deal found 8/12

$114

Tue 9/25:45 amTYS - IAD

Nonstop1h 43mUnited Airlines

Deal found 8/12

$116

Tue 9/26:13 amTYS - DCA

Nonstop1h 46mAmerican Airlines

Deal found 8/12

$116

Thu 9/412:08 pmTYS - BWI

1 stop9h 12mMultiple Airlines

Deal found 8/12

$116

Sat 9/139:31 pmTYS - BWI

1 stop11h 52mMultiple Airlines

Deal found 8/12

$117

Wed 8/2710:54 amTYS - BWI

1 stop22h 16mMultiple Airlines

Deal found 8/12

$124

Wed 9/35:05 amTYS - IAD

1 stop5h 02mAmerican Airlines

Deal found 8/12

$126

Tue 9/26:14 pmTYS - DCA

1 stop5h 32mDelta

Deal found 8/11

$126

Wed 9/311:18 amTYS - BWI

1 stop6h 23mAmerican Airlines

Deal found 8/12

$126

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 10/10

7:02 pm-8:46 pm

Nonstop1h 44m

Washington, D.C. Dulles Intl

Mon 10/13

9:36 pm-11:16 pm

Nonstop1h 40m

$90

KnoxvilleWashington, D.C.

TYS - IAD

TYSIAD

Knoxville McGhee Tyson

Fri 8/29

12:45 pm-2:23 pm

Nonstop1h 38m

Washington, D.C. Dulles Intl

Fri 8/29

9:33 pm-6:08 pm

1 stop20h 35m

$183

KnoxvilleWashington, D.C.

TYS - IAD

TYSIAD

Knoxville McGhee Tyson

Wed 9/3

7:25 pm-9:08 pm

Nonstop1h 43m

Washington, D.C. Dulles Intl

Sun 9/7

10:11 pm-11:57 pm

Nonstop1h 46m

$189

KnoxvilleWashington, D.C.

TYS - DCA

TYSDCA

Knoxville McGhee Tyson

Sat 10/11

6:03 am-7:45 am

Nonstop1h 42m

Washington, D.C. Reagan-National

Mon 10/13

8:24 pm-10:09 pm

Nonstop1h 45m

$189

KnoxvilleWashington, D.C.

TYS - IAD

TYSIAD

Knoxville McGhee Tyson

Wed 9/10

7:25 pm-9:08 pm

Nonstop1h 43m

Washington, D.C. Dulles Intl

Wed 9/17

8:45 am-10:28 am

Nonstop1h 43m

$189

KnoxvilleWashington, D.C.

TYS - DCA

TYSDCA

Knoxville McGhee Tyson

Thu 10/9

5:08 pm-6:45 pm

Nonstop1h 37m

Washington, D.C. Reagan-National

Mon 10/13

8:24 pm-10:09 pm

Nonstop1h 45m

$189

KnoxvilleWashington, D.C.

TYS - IAD

TYSIAD

Knoxville McGhee Tyson

Thu 11/6

5:45 am-7:28 am

Nonstop1h 43m

Washington, D.C. Dulles Intl

Sun 11/9

10:15 pm-11:59 pm

Nonstop1h 44m

$189

KnoxvilleWashington, D.C.

TYS - DCA

TYSDCA

Knoxville McGhee Tyson

Thu 10/9

10:43 am-12:14 pm

Nonstop1h 31m

Washington, D.C. Reagan-National

Tue 10/14

8:19 am-10:13 am

Nonstop1h 54m

$189

KnoxvilleWashington, D.C.

TYS - IAD

TYSIAD

Knoxville McGhee Tyson

Tue 9/23

5:45 am-7:28 am

Nonstop1h 43m

Washington, D.C. Dulles Intl

Tue 9/30

8:45 am-10:29 am

Nonstop1h 44m

$189

KnoxvilleWashington, D.C.

TYS - DCA

TYSDCA

Knoxville McGhee Tyson

Fri 10/24

5:08 pm-6:45 pm

Nonstop1h 37m

Washington, D.C. Reagan-National

Mon 10/27

8:24 pm-10:09 pm

Nonstop1h 45m

$189

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/12

Showing 1-10 of 58 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, July is the cheapest month in which you can book a flight from Knoxville to Washington, D.C. (average of $302). Flying from Knoxville to Washington, D.C. in April is currently the most expensive (average of $337). 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 68% 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 Thursday afternoons when fares are most often at their lowest. Friday 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 (24 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (4 on average).

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

What’s the top layover airport for flights from Knoxville to Washington, D.C.?

Chicago (ORD) – chosen by Cheapflights users on 50% of 1-stop itineraries from Knoxville to Washington, D.C. on Cheapflights.

What’s the cheapest layover airport for flights from Knoxville to Washington, D.C.?

Denver (DEN) is the most affordable 1-stop option, with an average round-trip price of $200.

What’s the fastest layover option from Knoxville to Washington, D.C.?

Flights via Chicago (ORD) have the shortest average one-way travel time for 1-stop routes: 5h 11m.

Which airport typically offers the quickest layover for flights from Knoxville to Washington, D.C.?

Flights via Chicago (ORD) offer the fastest connection on this route, with an average layover time of 1h 42m.

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

7,980 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

7,980 reviews

Delta

8.0

Very good

7,980 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

8,916 reviews

Delta

8.0

Very good

7,980 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

7,980 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

701 reviews

Delta

8.0

Very good

7,980 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 18 flights from McGhee Tyson to Washington, D.C. per day from 4 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 $42 on this airline. Additional options worth looking into are American Airlines and Delta, starting at $189 and $200 round-trip. Allegiant Air is priced at 85% 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 $103 on Allegiant Air. Other airlines that offer cheap prices include United Airlines from $116 and American Airlines from $116 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 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 Ethiopian Air (95%), Allegiant Air (83%) and Copa Airlines (78%).
What are the cheapest flights from Knoxville to Washington, D.C.?
While on average a flight from Knoxville to Washington, D.C. is generally $1,661, our data shows the cheapest flight currently is $40. When looking at the most popular route, (Knoxville McGhee Tyson - Washington, D.C. Dulles Intl), you can expect to pay $86 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, July is the cheapest month in which you can book a flight from Knoxville to Washington, D.C. (average of $302). Flying from Knoxville to Washington, D.C. in April is currently the most expensive (average of $337). 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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Top 4 airlines flying from Knoxville to Washington, D.C.

Airline	Cheapest	Average	Flexibility	On-time
Allegiant Air	Cheapest$42	Average$83	FlexibilityNo cancel fee	On-time88%
American Airlines	Cheapest$189	Average$315	FlexibilityNo cancel fee	On-time71%
Delta	Cheapest$200	Average$253	FlexibilityNo cancel fee	On-timeN/A
United Airlines	Cheapest$219	Average$338	FlexibilityNo cancel fee	On-time69%

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$84+ Cheap flights from Knoxville (TYS) to Washington, D.C. (WAS)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/22. 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

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Average price

Good round-trip deal

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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 August 14, 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 August 14, 2025.

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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.

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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 August 8, 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 August 14, 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.

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

What’s the top layover airport for flights from Knoxville to Washington, D.C.?

Share of 1-stop round-trip flights from Knoxville to Washington, D.C. chosen by Cheapflights users in the past 12 months, using the same layover each way.

What’s the cheapest layover airport for flights from Knoxville to Washington, D.C.?

Average round-trip fare for 1-stop flights from Knoxville to Washington, D.C., chosen by Cheapflights users in the past 12 months, with the same layover each way.

What’s the fastest layover option from Knoxville to Washington, D.C.?

Shortest average travel time for 1-stop one-way flights from Knoxville to Washington, D.C., based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.

Which airport typically offers the quickest layover for flights from Knoxville to Washington, D.C.?

Average layover duration for 1-stop one-way flights from Knoxville to Washington, D.C., chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

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.?

Traveling to a place near Washington, D.C.?

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Alternative routes for Knoxville to Washington, D.C.

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Top 4 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 August 14, 2025.