Cheap Flights from Washington (IAD) to Knoxville (TYS)

The lowest price advertised for a round-trip journey from IAD to TYS is AU$401. But you better get moving. This figure is based on fares available within the last 7 days on Expedia for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.

Most flights can be cancelled online, but each airline has a different set of terms and conditions. If you do decide to cancel your flight, go to our Customer Service Portal and follow the instructions.

Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for Washington Dulles Intl. Airport (IAD) to TYS flights, you'll see a "no change fees" filter for you to select.

With a flight distance of 680 kilometres, it's only a short hop from IAD to TYS. It might be a quick journey, but it's still worth bringing along something to keep you busy on board.

If you're looking to fly straight from IAD to McGhee Tyson Airport (TYS), United Airlines (UA) is a popular choice. It operates 60 flights every month between Chantilly and Alcoa.

Late planners can sometimes find a bargain, with some super cheap fares from Dulles Intl. Airport to Knoxville Airport cropping up a few weeks before the date of departure. If you'd rather book ahead of time, Expedia compares and updates the best flight deals frequently — as early as a year in advance in some cases. It does depend on the carrier though, as not all airlines publish prices that far in advance.