Cheapest return flights from Knoxville to Washington in March from 87€

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

Return flights

29 Mar - 16 Apr Allegiant Air direct
29 Mar - 19 Apr Allegiant Air direct
29 Mar - 09 Apr Allegiant Air direct
29 Mar - 12 Apr Allegiant Air direct
26 Mar - 09 Apr Allegiant Air direct
26 Mar - 12 Apr Allegiant Air direct
29 Mar - 02 Apr Allegiant Air direct
26 Mar - 02 Apr Allegiant Air direct
22 Mar - 09 Apr Allegiant Air direct
22 Mar - 12 Apr Allegiant Air direct
26 Mar - 29 Mar Allegiant Air direct
22 Mar - 29 Mar Allegiant Air direct
22 Mar - 26 Mar Allegiant Air direct
26 Mar - 30 Mar Allegiant Air
29 Mar - 30 Mar Allegiant Air
26 Mar - 31 Mar Allegiant Air
29 Mar - 31 Mar Allegiant Air
25 Mar - 30 Mar Allegiant Air
27 Mar - 30 Mar Allegiant Air
26 Mar - 30 Mar United direct

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

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