IAD → TYSWashington to Knoxville/Maryville

live

Direct flights from Washington (IAD) to Knoxville/Maryville (TYS): 28 nonstop departures observed each week across 2 airlines. 1 of the 30 tracked flights was cancelled. The nonstop covers 674 km, an estimated 1 hour 22 minutes in the air. Measured by Pro Flight Search from live flight boards at Washington and Knoxville/Maryville. Updated 30 October 2026 at 02:40 UTC.

IAD Washington smooth · +7
TYS Knoxville/Maryville tracking
674 km · ~1h 22m est.
dep bank 09:00–22:1328x weekly
Running clean · 2 airlines · 28x weekly · nonstop
88 / 100

route health from live IAD and TYS delay boards

1 of 30 tracked legs cancelled in the sample. Will a delayed flight be cancelled? →

Flight time~1h 22mestimated from route distance
Weekly departures28x2 direct airlines on the leg
Cancelled3.3%recent route rate · 1 of 30

The week

scheduled departures · origin local time
06121824
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Allegiant AirUnited Airlines

Each mark is a scheduled departure at its origin-local time, observed operating in the last 7 days. Today is highlighted.

Who flies it

observed on the boards · 7 days
Allegiant AirG4

Flights G43033 10:01 Th

United AirlinesUA

Flights UA4257 09:00 daily · UA4070 12:55 Tu We Th Fr Sa Su · UA4914 varies daily · UA4304 22:13 daily

History

operated legs · board outcomes
10-29G43033departed+6
10-29UA4257departed+10
10-29UA4304departed+21
10-29UA4914departed+73
10-29YV4070departed+19
10-28UA4070cancelledCNX
10-28UA4257departed+13
10-28UA4304departed+29
10-28UA4914departed+57
10-28YV4070departed+0
10-27UA4257departed+12
10-27UA4304departed+13
10-27UA4914departed+35
10-27YV4070departed+16
10-26UA4257departed+13
10-26UA4304departed+28
10-26UA4914departed+14
10-26YV4070departed+22
10-251I601departed+170
10-25G41409departed+4
10-25UA4070departed+59
10-25UA4304departed+34
10-25UA4914departed+24
10-25YV4070departed+6
10-24UA4257departed+7
10-24UA4914departed+14
10-24YV4070departed+12
10-23UA4304departed+23
10-23UA4914departed+50
10-23YV4070departed+26

Actual board outcomes rather than schedules, paired departure and arrival per flight and day.

Full board history, day by day →

Airports right now

live boards
IADWashington +7 min smooth 🌤 clear · N 0 kt Full IAD delay board →
TYSKnoxville/Maryville tracking Full TYS delay board →

How the Washington to Knoxville/Maryville route actually runs

Pro Flight Search records official board updates for nonstop IAD to TYS flights through the day: schedules, estimates, gate pushes and actual departures. The verdict above comes from operated flights, so it reflects what this route does rather than what the timetable promises.

Planning around a delay? Live airport delays · Weather delay risk map · Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure

Cite this data

Journalists, bloggers, and researchers may cite this page with attribution and a link to Pro Flight Search.

Suggested citation

Pro Flight Search: Washington (IAD) to Knoxville/Maryville (TYS) route reliability, measured from operated flights on official airport boards.

Canonical URL
https://proflightsearch.com/search-flights/IAD-TYS
How we measure this →

IAD to TYS questions

Is IAD–TYS running on time right now?

Smooth skies ahead. The departure side at IAD is the weaker end, route health score 88/100. The airports section above carries the live status and delay window at both ends.

Morning or evening flight on IAD–TYS?

Operators schedule morning departures around 09:00 and evening departures around 22:13 from IAD. Earlier flights typically land before destination-airport delays accumulate later in the day; check the TYS delay card to confirm conditions when you'd arrive.

How long is the flight from IAD to TYS?

Great-circle distance is 674 km. With typical jet cruise speed plus taxi, climb and descent, expect roughly 78–88 min gate-to-gate on this route.

How often does IAD–TYS fly?

2 carriers operate this route, around 28 flights a week between them. Compare carrier days and times in the airline list above.