Cheapest return flights from Knoxville to Washington in February from $80

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

Return flights

05 Feb - 19 Feb Allegiant Air direct
22 Feb - 26 Feb Allegiant Air direct
08 Feb - 19 Feb Allegiant Air direct
08 Feb - 26 Feb Allegiant Air direct
22 Feb - 08 Mar Allegiant Air direct
22 Feb - 15 Mar Allegiant Air direct
17 Feb - 21 Feb United direct
13 Feb - 14 Feb United direct
07 Feb - 11 Feb United direct

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

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