Cheapest one-way flights from Knoxville to Washington in March from 43€

AirHint found the following cheapest one-way flights from Knoxville (TYS) to Washington (IAD) in March 2026 (see full year).

One-Way flights

29 Mar Allegiant Air direct
24 Mar Allegiant Air
23 Mar Allegiant Air
24 Mar United direct
23 Mar United direct

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

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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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