Cheapest return flights from Knoxville to Washington in February from $83

AirHint found the following cheapest return flights from Knoxville (TYS) to Washington (IAD) in February 2026 (see full year).

Return flights

08 Feb - 15 Feb Allegiant Air direct
05 Feb - 15 Feb Allegiant Air direct
12 Feb - 15 Feb Allegiant Air direct
20 Feb - 28 Feb United direct

Also check the deals for one-way flights from Knoxville to Washington in February.

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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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