Cheap flights from Knoxville to Washington, D.C. from $27
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Knoxville to Washington, D.C. departing on 10/29. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Not ready to book? to track prices.Allegiant Air flights from Knoxville to Washington, D.C. Dulles Intl Airport
Our best Allegiant Air deals on Knoxville to Washington, D.C. Dulles Intl Airport flight tickets
Delta flights from Knoxville to Washington, D.C. Dulles Intl Airport
Our best Delta deals on Knoxville to Washington, D.C. Dulles Intl Airport flight tickets
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Use the filters below to find and compare flights from Knoxville to Washington, D.C. Dulles Intl Airport that are best for you.
Fly from
Fly to
Route
Depart
Return
KnoxvilleWashington, D.C.
TYS Knoxville McGhee Tyson - IAD Washington, D.C. Dulles Intl
TYSIAD
Knoxville McGhee Tyson
Sun 11/8
7:30 am-8:58 am
Nonstop1h 28m
Washington, D.C. Dulles Intl
Sun 11/15
9:48 am-11:23 am
Nonstop1h 35m
KnoxvilleWashington, D.C.
TYS Knoxville McGhee Tyson - IAD Washington, D.C. Dulles Intl
TYSIAD
Knoxville McGhee Tyson
Sun 11/8
7:30 am-8:58 am
Nonstop1h 28m
Washington, D.C. Dulles Intl
Thu 11/12
10:03 am-11:38 am
Nonstop1h 35m
KnoxvilleWashington, D.C.
TYS Knoxville McGhee Tyson - IAD Washington, D.C. Dulles Intl
TYSIAD
Knoxville McGhee Tyson
Thu 11/5
8:55 am-8:11 pm
1 stop11h 16m
Washington, D.C. Dulles Intl
Thu 11/12
10:03 am-11:38 am
Nonstop1h 35m
KnoxvilleWashington, D.C.
TYS Knoxville McGhee Tyson - IAD Washington, D.C. Dulles Intl
TYSIAD
Knoxville McGhee Tyson
Thu 11/5
8:55 am-8:11 pm
1 stop11h 16m
Washington, D.C. Dulles Intl
Thu 11/12
10:03 am-11:38 am
Nonstop1h 35m
KnoxvilleWashington, D.C.
TYS Knoxville McGhee Tyson - IAD Washington, D.C. Dulles Intl
TYSIAD
Knoxville McGhee Tyson
Thu 10/22
7:45 am-9:11 am
Nonstop1h 26m
Washington, D.C. Dulles Intl
Mon 11/9
6:07 pm-5:18 pm
1 stop23h 11m
KnoxvilleWashington, D.C.
TYS Knoxville McGhee Tyson - IAD Washington, D.C. Dulles Intl
TYSIAD
Knoxville McGhee Tyson
Thu 10/29
2:01 pm-2:45 pm
1 stop24h 44m
Washington, D.C. Dulles Intl
Sun 11/1
8:16 am-9:44 am
Nonstop1h 28m
KnoxvilleWashington, D.C.
TYS Knoxville McGhee Tyson - IAD Washington, D.C. Dulles Intl
TYSIAD
Knoxville McGhee Tyson
Thu 1/14
9:45 am-11:31 am
Nonstop1h 46m
Washington, D.C. Dulles Intl
Thu 1/21
12:55 pm-2:47 pm
Nonstop1h 52m
KnoxvilleWashington, D.C.
TYS Knoxville McGhee Tyson - IAD Washington, D.C. Dulles Intl
TYSIAD
Knoxville McGhee Tyson
Wed 11/4
7:35 pm-9:15 pm
Nonstop1h 40m
Washington, D.C. Dulles Intl
Wed 11/11
9:40 am-11:30 am
Nonstop1h 50m
KnoxvilleWashington, D.C.
TYS Knoxville McGhee Tyson - IAD Washington, D.C. Dulles Intl
TYSIAD
Knoxville McGhee Tyson
Mon 11/2
7:35 pm-9:15 pm
Nonstop1h 40m
Washington, D.C. Dulles Intl
Tue 11/10
9:40 am-11:30 am
Nonstop1h 50m
KnoxvilleWashington, D.C.
TYS Knoxville McGhee Tyson - IAD Washington, D.C. Dulles Intl
TYSIAD
Knoxville McGhee Tyson
Wed 11/4
2:35 pm-5:16 pm
1 stop26h 41m
Washington, D.C. Dulles Intl
Sun 11/8
9:48 am-11:23 am
Nonstop1h 35m
See travel insights to Washington, D.C. from
How to get the cheapest flight ticket from Knoxville to Washington, D.C. Dulles Intl Airport
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the typical price of a round-trip flight between Knoxville and Washington, D.C. Dulles Intl Airport?
Prices are currently low for flights on this route.
Typical prices usually range from $226 to $359.The lowest price recently found on this route was $112.
What is the cheapest month to fly to Washington, D.C. Dulles Intl Airport?
In general, March is the cheapest month to fly from Knoxville to Washington, D.C. Dulles Intl Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $130. If you aren’t able to travel to Washington, D.C. Dulles Intl Airport during the month of March, then flying in February is also cheap. Prices for this month can be found on momondo for an average of $143.
What is the cheapest day to depart on your flight to Washington, D.C. Dulles Intl Airport?
Our data shows that Friday is the least expensive day to fly to Washington, D.C. Dulles Intl Airport. Tickets to fly out on this day can be as low as $506. When flying out on a Saturday, the most expensive travel day of the week, you can expect to see flight prices from Knoxville to Washington, D.C. Dulles Intl Airport for around $978.
What is the cheapest time of day to depart on your flight to Washington, D.C. Dulles Intl Airport?
Flying to Washington, D.C. Dulles Intl Airport from Knoxville in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $89 when looking at flights departing in the afternoon. If you have a flexible travel schedule, then try to avoid flying in the evening when prices are $968 on average. Flights to Washington, D.C. Dulles Intl Airport from Knoxville in the evening are generally more expensive because this time of day is more convenient for travelers’ schedules.
What is the cheapest Knoxville McGhee Tyson to Washington, D.C. Dulles Intl flight route?
Fly from Knoxville McGhee Tyson to Washington, D.C. Dulles Intl for the best Knoxville McGhee Tyson - Washington, D.C. Dulles Intl flight prices
What cabin class options are available on Knoxville to Washington, D.C. Dulles Intl Airport flights?
There are 4 cabin classes available to choose from on Knoxville to Washington, D.C. Dulles Intl Airport flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.
How have Knoxville to Washington, D.C. Dulles Intl Airport flight prices changed over time?
As of October 2026, prices for Knoxville to Washington, D.C. Dulles Intl Airport flights are approximately 73% cheaper when compared to flights at the same time last year.
What is the cheapest airline that flies from Knoxville McGhee Tyson to Washington, D.C. Dulles Intl?
United Airlines is the most popular carrier operating from Knoxville McGhee Tyson to Washington, D.C. Dulles Intl
What airlines fly to Washington, D.C. Dulles Intl Airport?
United Airlines, Allegiant Air and American Airlines are the top three most popular airlines that fly to Washington, D.C. Dulles Intl Airport from Knoxville according to our data. United Airlines is the first choice among our users, with 48% of people opting to fly with this airline when traveling to Washington, D.C. Dulles Intl Airport. Keep in mind that there are 5 different airlines that fly to Washington, D.C. Dulles Intl Airport on a routine basis, so you have a few additional options to choose from.
How many flights depart from Knoxville to Washington, D.C. Dulles Intl Airport on average per day?
As of October 2026, there are 20 flights per day flying from Knoxville to Washington, D.C. Dulles Intl Airport. The most common time of day flights depart is 1:00PM, with 31% of flights taking off in the afternoon.
How many flights depart from Knoxville to Washington, D.C. Dulles Intl Airport on average per week?
As of October 2026, there are 145 flights per week flying from Knoxville to Washington, D.C. Dulles Intl Airport. The most common day of the week flights depart is Thu, with 15% of flights taking off on this day.
When to book flights from Knoxville to Washington, D.C. Dulles Intl Airport
Cheap Knoxville to Washington, D.C. Dulles Intl Airport (TYS to IAD) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Knoxville to Washington, D.C. Dulles Intl Airport
Frequently asked questions about flying from Knoxville to Washington, D.C. Dulles Intl Airport
How far is Knoxville McGhee Tyson to Washington, D.C. Dulles Intl by plane?
Washington, D.C. Dulles Intl is 410.2 mi away from Knoxville McGhee Tyson. In terms of flight time, this usually takes a little over 1h 26m.
When did momondo last update prices for flights from Knoxville McGhee Tyson Airport to Washington, D.C. Dulles Intl Airport?
Prices for flights from Knoxville McGhee Tyson Airport to Washington, D.C. Dulles Intl Airport are refreshed on a daily basis.
How many operators does momondo search for flights from Knoxville McGhee Tyson Airport to Washington, D.C. Dulles Intl Airport?
As of October 2026, there are 2 operators available to choose from for flights from Knoxville McGhee Tyson Airport to Washington, D.C. Dulles Intl Airport.
How old do you have to be to fly from Knoxville McGhee Tyson Airport to Washington, D.C. Dulles Intl Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Knoxville McGhee Tyson Airport to Washington, D.C. Dulles Intl Airport.
What documentation or ID do you need to fly to Washington, D.C. Dulles Intl Airport?
The required travel and health documents for your Washington, D.C. Dulles Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Washington, D.C. Dulles Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular plane model from Knoxville to Washington, D.C. Dulles Intl Airport?
Based on momondo bookings for flights between Knoxville and Washington, D.C. Dulles Intl Airport, the leading plane model is Embraer 175 (Enhanced Winglets), making up 27.63% of the total bookings. Other popular models include Embraer ERJ-135 / ERJ-140 / ERJ-145 with 26.26%, Airbus A320-100/200 with 14.61%, and Canadair (Bombardier) Regional Jet 700 with 12.79%.
What is the most popular airline from Knoxville to Washington, D.C. Dulles Intl Airport?
momondo data reveals that the most frequently booked airline on the route from Knoxville to Washington, D.C. Dulles Intl Airport is United Airlines, representing 70% of all bookings. The subsequent popular airline is Allegiant Air at 30%.
Best airlines flying from Knoxville to Washington, D.C. Dulles Intl Airport
Compare and see reviews for airlines that fly from Knoxville to Washington, D.C. Dulles Intl Airport with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $46 | Free Cancellation | Rating 7.3 678 reviews | |||
| PriceFrom $194 | Free Cancellation | Rating 7.4 10,324 reviews |
United Airlines Flights From Knoxville to Washington, D.C. Dulles Intl Airport
United Airlines flight deals from Knoxville to Washington, D.C. Dulles Intl Airport start from $194 round-trip. Over the 28 United Airlines flights for this route in a normal week, average airfare is usually $330 round-trip - but some users have found much cheaper deals with momondo.
Allegiant Air Flights From Knoxville to Washington, D.C. Dulles Intl Airport
Allegiant Air is also a popular choice for this route. Allegiant Air flight deals for Knoxville to Washington, D.C. Dulles Intl Airport start from as low as $46 round-trip, depending on your selected dates, with average Allegiant Air deals seen on momondo around $89. Allegiant Air operates 1 flight to Washington, D.C. Dulles Intl Airport from Knoxville in an average week. Users have rated it 7.3/10 across 678 reviews.
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Why should I use momondo to find a flight deal from Knoxville to Washington, D.C.?
momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Knoxville to Washington, D.C.. Millions of users trust and use momondo every year so you are in good hands.
Can I find flights from Knoxville to Washington, D.C. with flexible booking policies on momondo?
Yes. momondo enables you to select and highlight flights to Washington, D.C. from Knoxville with this policy.
How can momondo help me find flights from Knoxville to Washington, D.C.?
Once all potential Knoxville to Washington, D.C. flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.
I’m not ready to book a flight from Knoxville to Washington, D.C. right now. Can momondo alert me if prices change?
Of course. momondo tracks the price of Knoxville to Washington, D.C. flights. All you need is a valid email address and we will do the rest; it is that quick and easy.