Cheapest one-way flights from Knoxville to Washington in July from $40

AirHint found the following cheapest one-way flights from Knoxville (TYS) to Washington (IAD) in July 2025 (see full year).

One-Way flights

18 Jul Allegiant Air direct
14 Jul Allegiant Air direct
04 Jul Allegiant Air direct
07 Jul Allegiant Air direct
05 Jul Allegiant Air
02 Jul Allegiant Air
05 Jul United direct
03 Jul American Airlines
03 Jul United direct
01 Jul United direct

Also check the deals for return flights from Knoxville to Washington in July.

Skyscanner

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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