$90 Cheap United flights Knoxville (TYS) to Washington (IAD)

View $90 flight on Sat, Aug 30, 2025Opens in a new window

$90 Cheap United flights Knoxville (TYS) to Washington (IAD)

Prices were available within the past 7 days and start at $90 for one-way flights and $184 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Sat, Aug 30 - Mon, Sep 1
TYS
Knoxville
IAD
Washington
$184 Roundtrip, just found
$184
Roundtrip
just found
Select United flight, departing Sat, Aug 30 from Knoxville to Washington, returning Mon, Sep 1, priced at $184 just found
United
Thu, Oct 2 - Sun, Oct 5
TYS
Knoxville
IAD
Washington
$189 Roundtrip, found 1 hour ago
$189
Roundtrip
found 1 hour ago
Select United flight, departing Thu, Oct 2 from Knoxville to Washington, returning Sun, Oct 5, priced at $189 found 1 hour ago
United
Sat, Aug 30 - Mon, Sep 1
TYS
Knoxville
IAD
Washington
$199 Roundtrip, just found
$199
Roundtrip
just found
Select United flight, departing Sat, Aug 30 from Knoxville to Washington, returning Mon, Sep 1, priced at $199 just found
United
Thu, Sep 4 - Tue, Sep 9
TYS
Knoxville
IAD
Washington
$206 Roundtrip, found 2 days ago
$206
Roundtrip
found 2 days ago
Select United flight, departing Thu, Sep 4 from Knoxville to Washington, returning Tue, Sep 9, priced at $206 found 2 days ago
United
Fri, Sep 5 - Mon, Sep 8
TYS
Knoxville
IAD
Washington
$207 Roundtrip, found 21 hours ago
$207
Roundtrip
found 21 hours ago
Select United flight, departing Fri, Sep 5 from Knoxville to Washington, returning Mon, Sep 8, priced at $207 found 21 hours ago
United
Sun, Aug 17 - Sun, Aug 24
TYS
Knoxville
IAD
Washington
$208 Roundtrip, found 3 hours ago
$208
Roundtrip
found 3 hours ago
Select United flight, departing Sun, Aug 17 from Knoxville to Washington, returning Sun, Aug 24, priced at $208 found 3 hours ago
Flights from Knoxville (TYS) to Washington (IAD)
Origin airport
McGhee Tyson
Destination airport
Washington Dulles Intl.
Airlines serving
American Airlines, Delta, United
Popular airline
Delta
Distance
419 mi
Average flight time
1 hour 38 mins

Frequently asked questions

How much is a United Airlines flight from McGhee Tyson Airport (TYS) to Washington Dulles Intl. Airport (IAD)?
Finding cheap one-way United Airlines flights from TYS to IAD from $90 on Expedia is a cinch — just filter by "Price (lowest to highest)." Or check out our budget-friendly round-trip fares from $184 for your next exciting adventure.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
What is the cheapest month to fly from TYS to IAD with United Airlines?
Search for return or one-way flights to Washington in January or February. You could find an affordable fare with United Airlines during these off-peak months.
What is the cheapest time to book flights from McGhee Tyson Airport (TYS) to Washington Dulles Intl. Airport (IAD) with United Airlines?
To find cheap United Airlines fares from McGhee Tyson Airport (TYS) to Washington Dulles Intl. Airport (IAD), start searching one to three months before your intended departure. Securing domestic flights 34 to 86 days in advance could save you 25% compared to booking just 6 to 12 days ahead. The day you book can also affect the price you pay. Sunday tends to be the most affordable, while Monday is often the most expensive for domestic flights. You can save 6% on average by booking your journey on a Sunday.**Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC's global airline sales database.
Does United Airlines fly nonstop from McGhee Tyson Airport (TYS) to Washington Dulles Intl. Airport (IAD)?
Hop on one of United Airlines's 21 weekly direct flights from McGhee Tyson Airport (TYS) to Washington Dulles Intl. Airport (IAD). To see what's available, enter your origin, dates and destination and hit search. Then apply the "Nonstop" and "Airline" filters.
How long does it take to fly from TYS to IAD with United Airlines?
From takeoff till landing, a nonstop United Airlines flight from McGhee Tyson Airport (TYS) to Washington Dulles Intl. Airport (IAD) takes around 1h 45m.
Which day of the week has the most United Airlines flights from McGhee Tyson Airport (TYS) to Washington Dulles Intl. Airport (IAD)?
Thursday has the most United Airlines flights from McGhee Tyson Airport (TYS) to Washington Dulles Intl. Airport (IAD). With 3 daily departures, this is a great day to find something that will suit your schedule.
What is the earliest United Airlines flight from TYS to IAD?
Departing TYS at 5:45AM UTC-5, the first United Airlines flight to IAD arrives at 7:31AM UTC-5. Traveling earlier in the day means you're less likely to encounter cancellations or delays.* Don't like early starts? The last United Airlines flight from TYS to IAD departs at 2:35PM UTC-5 and touches down at 4:20PM UTC-5.*Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports does United Airlines fly into in Washington?
Washington Dulles Intl. Airport (IAD) is the main arrival point for United Airlines flights from McGhee Tyson Airport (TYS) to Washington. But the airline also flies to Ronald Reagan Washington National Airport (DCA). Be sure to check the "All Airports" option for your destination to see exactly what's available for your trip to Washington.
Why fly with United Airlines from TYS to IAD?
Offering a rewarding loyalty program, United Airlines is a favorite of many passengers heading from TYS to IAD. Plus, as a United Mileage Plus and One Key™ member booking through Expedia, you could earn OneKeyCash™* on eligible flights along with your airline miles.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.
What type of plane does United Airlines fly from McGhee Tyson Airport (TYS) to Washington Dulles Intl. Airport (IAD)?
Jet off on a United Airlines flight from McGhee Tyson Airport (TYS) to Washington Dulles Intl. Airport (IAD), and you'll usually be on an Embraer ERJ. Bear in mind though, that the aircraft type can vary depending on operational reasons.
Can I change or cancel my United Airlines flight from McGhee Tyson Airport (TYS) to Washington Dulles Intl. Airport (IAD)?
Changes are usually free within 24 hours of booking, but your airline may add a charge after that time. For further information about modifying your flights, check out your "Trips," select your flight and click on "Manage Booking." If you'd like the flexibility to change your itinerary without being charged, tick the "No cancel fee" or "Changes included" filter when organizing your next break.

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*Available to One Key members.