
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $58 (Kiwi.com) |
One-way from | $40 (Booking.com) |
Popular in | January |
Cheapest in | August |
Average price | $304 |
Good round-trip deal | $101 or less |
Good one-way deal | $53 or less |
Fly from
Fly to
Route
Depart
Return
Price
Washington, D.C.Blountville
IAD - TRI
IADTRI
Washington, D.C. Dulles Intl
Fri 3/20
2:58 pm-4:28 pm
Nonstop1h 30m
Blountville Tri Cities TN/VA
Mon 3/23
12:53 pm-2:18 pm
Nonstop1h 25m
Washington, D.C.Blountville
IAD - TRI
IADTRI
Washington, D.C. Dulles Intl
Fri 3/6
2:58 pm-4:28 pm
Nonstop1h 30m
Blountville Tri Cities TN/VA
Mon 3/9
12:53 pm-2:18 pm
Nonstop1h 25m
Washington, D.C.Blountville
IAD - TRI
IADTRI
Washington, D.C. Dulles Intl
Fri 2/20
2:58 pm-4:28 pm
Nonstop1h 30m
Blountville Tri Cities TN/VA
Mon 2/23
12:53 pm-2:18 pm
Nonstop1h 25m
Washington, D.C.Knoxville
IAD - TYS
IADTYS
Washington, D.C. Dulles Intl
Thu 3/19
3:42 pm-5:22 pm
Nonstop1h 40m
Knoxville McGhee Tyson
Sun 3/22
6:12 pm-7:56 pm
Nonstop1h 44m
Washington, D.C.Blountville
IAD - TRI
IADTRI
Washington, D.C. Dulles Intl
Fri 3/20
2:58 pm-4:28 pm
Nonstop1h 30m
Blountville Tri Cities TN/VA
Mon 3/23
5:08 pm-11:56 pm
2 stops30h 48m
Washington, D.C.Blountville
IAD - TRI
IADTRI
Washington, D.C. Dulles Intl
Fri 3/6
2:58 pm-4:28 pm
Nonstop1h 30m
Blountville Tri Cities TN/VA
Mon 3/9
5:08 pm-12:31 am
2 stops31h 23m
Washington, D.C.Blountville
IAD - TRI
IADTRI
Washington, D.C. Dulles Intl
Thu 3/12
8:15 am-12:13 pm
1 stop27h 58m
Blountville Tri Cities TN/VA
Mon 3/16
12:53 pm-2:18 pm
Nonstop1h 25m
Washington, D.C.Knoxville
IAD - TYS
IADTYS
Washington, D.C. Dulles Intl
Wed 4/15
9:00 am-10:50 am
Nonstop1h 50m
Knoxville McGhee Tyson
Wed 4/22
2:25 pm-4:10 pm
Nonstop1h 45m
Washington, D.C.Knoxville
IAD - TYS
IADTYS
Washington, D.C. Dulles Intl
Sun 3/8
4:42 pm-12:46 pm
1 stop20h 04m
Knoxville McGhee Tyson
Sun 3/15
6:30 am-8:14 am
Nonstop1h 44m
Washington, D.C.Knoxville
IAD - TYS
IADTYS
Washington, D.C. Dulles Intl
Thu 2/26
9:00 am-10:49 am
Nonstop1h 49m
Knoxville McGhee Tyson
Tue 3/3
9:40 am-11:26 am
Nonstop1h 46m
Currently, June is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Tennessee (average of $45). Flying from Washington, D.C. Dulles Intl Airport to Tennessee in September is currently the most expensive (average of $204). 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.
A simple way to save on the total cost of your ticket is to fly from Washington, D.C. Dulles Intl Airport to Tennessee in the evening. If you’re flexible enough to do this you can expect to save up to 50% on your trip compared to booking a flight in the morning.
Travelers seeking maximum savings on their Washington, D.C. Dulles Intl Airport to Tennessee flight should consider departing on Tuesday evenings when fares are most often at their lowest. Tuesday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.
The most flights from IAD to USTN are scheduled on a Monday (7 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (5 on average).
Food
Entertainment
Crew
Overall
Boarding
Comfort
Reviews
Jim,Nov 2025
AVL - ATL
Food
Entertainment
Crew
Overall
Boarding
Comfort
Reviews
Jim,Nov 2025
AVL - ATL
Food
Entertainment
Crew
Overall
Boarding
Comfort
Reviews
Jim,Nov 2025
AVL - ATL
Food
Entertainment
Crew
Overall
Boarding
Comfort
Reviews
Jim,Nov 2025
AVL - ATL
Food
Entertainment
Crew
Overall
Boarding
Comfort
Reviews
Jim,Nov 2025
AVL - ATL
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$42 | Average$93 | FlexibilityNo cancel fee | On-time88% | |
| Cheapest$78 | Average$310 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$166 | Average$345 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$266 | Average$410 | FlexibilityNo cancel fee | On-time71% |