Flights from Austin to Knoxville

Cheapest flights from Austin

These prices were available within the past 7 days. Prices quoted are per person, round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Sun, Aug 31 - Thu, Sep 18

AUS

Austin-Bergstrom Intl.

IAD

Washington Dulles Intl.

$224 Roundtrip, found 3 days ago

$224

Roundtrip

found 3 days ago

Select Frontier Airlines flight, departing Sun, Aug 31 from Austin-Bergstrom Intl. to Washington Dulles Intl., returning Thu, Sep 18, priced at $224 found 3 days ago

Sat, Jul 12 - Sat, Jul 19

AUS

Austin-Bergstrom Intl.

IAD

Washington Dulles Intl.

$250 Roundtrip, found 3 days ago

$250

Roundtrip

found 3 days ago

Select Frontier Airlines flight, departing Sat, Jul 12 from Austin-Bergstrom Intl. to Washington Dulles Intl., returning Sat, Jul 19, priced at $250 found 3 days ago

Fri, Jul 11 - Sat, Jul 19

AUS

Austin-Bergstrom Intl.

IAD

Washington Dulles Intl.

$260 Roundtrip, found 3 days ago

$260

Roundtrip

found 3 days ago

Select Frontier Airlines flight, departing Fri, Jul 11 from Austin-Bergstrom Intl. to Washington Dulles Intl., returning Sat, Jul 19, priced at $260 found 3 days ago

Mon, Jul 14 - Sun, Jul 20

AUS

Austin-Bergstrom Intl.

IAD

Washington Dulles Intl.

$270 Roundtrip, found 3 days ago

$270

Roundtrip

found 3 days ago

Select United flight, departing Mon, Jul 14 from Austin-Bergstrom Intl. to Washington Dulles Intl., returning Sun, Jul 20, priced at $270 found 3 days ago

Fri, Jul 11 - Thu, Jul 17

AUS

Austin-Bergstrom Intl.

IAD

Washington Dulles Intl.

$270 Roundtrip, found 3 days ago

$270

Roundtrip

found 3 days ago

Select Frontier Airlines flight, departing Fri, Jul 11 from Austin-Bergstrom Intl. to Washington Dulles Intl., returning Thu, Jul 17, priced at $270 found 3 days ago

Mon, Jul 14 - Sun, Jul 20

AUS

Austin-Bergstrom Intl.

IAD

Washington Dulles Intl.

$279 Roundtrip, found 3 days ago

$279

Roundtrip

found 3 days ago

Select American Airlines flight, departing Mon, Jul 14 from Austin-Bergstrom Intl. to Washington Dulles Intl., returning Sun, Jul 20, priced at $279 found 3 days ago

Mon, Jul 14 - Sun, Jul 20

AUS

Austin-Bergstrom Intl.

IAD

Washington Dulles Intl.

$310 Roundtrip, found 3 days ago

$310

Roundtrip

found 3 days ago

Select United flight, departing Mon, Jul 14 from Austin-Bergstrom Intl. to Washington Dulles Intl., returning Sun, Jul 20, priced at $310 found 3 days ago

Tue, Jul 15 - Mon, Jul 21

AUS

Austin-Bergstrom Intl.

IAD

Washington Dulles Intl.

$317 Roundtrip, found 3 days ago

$317

Roundtrip

found 3 days ago

Select United flight, departing Tue, Jul 15 from Austin-Bergstrom Intl. to Washington Dulles Intl., returning Mon, Jul 21, priced at $317 found 3 days ago

Mon, Jul 14 - Sun, Jul 20

AUS

Austin-Bergstrom Intl.

IAD

Washington Dulles Intl.

$319 Roundtrip, found 3 days ago

$319

Roundtrip

found 3 days ago

Select American Airlines flight, departing Mon, Jul 14 from Austin-Bergstrom Intl. to Washington Dulles Intl., returning Sun, Jul 20, priced at $319 found 3 days ago

Tue, Jul 15 - Mon, Jul 21

AUS

Austin-Bergstrom Intl.

IAD

Washington Dulles Intl.

$325 Roundtrip, found 3 days ago

$325

Roundtrip

found 3 days ago

Select American Airlines flight, departing Tue, Jul 15 from Austin-Bergstrom Intl. to Washington Dulles Intl., returning Mon, Jul 21, priced at $325 found 3 days ago

Tue, Jul 15 - Mon, Jul 21

AUS

Austin-Bergstrom Intl.

IAD

Washington Dulles Intl.

$327 Roundtrip, found 3 days ago

$327

Roundtrip

found 3 days ago

Select United flight, departing Tue, Jul 15 from Austin-Bergstrom Intl. to Washington Dulles Intl., returning Mon, Jul 21, priced at $327 found 3 days ago

Tue, Jul 15 - Sun, Jul 20

AUS

Austin-Bergstrom Intl.

IAD

Washington Dulles Intl.

$330 Roundtrip, found 3 days ago

$330

Roundtrip

found 3 days ago

Select United flight, departing Tue, Jul 15 from Austin-Bergstrom Intl. to Washington Dulles Intl., returning Sun, Jul 20, priced at $330 found 3 days ago

Mon, Jul 14 - Tue, Jul 22

AUS

Austin-Bergstrom Intl.

IAD

Washington Dulles Intl.

$337 Roundtrip, found 3 days ago

$337

Roundtrip

found 3 days ago

Select Delta flight, departing Mon, Jul 14 from Austin-Bergstrom Intl. to Washington Dulles Intl., returning Tue, Jul 22, priced at $337 found 3 days ago

Tue, Jul 15 - Sun, Jul 20

AUS

Austin-Bergstrom Intl.

IAD

Washington Dulles Intl.

$337 Roundtrip, found 3 days ago

$337

Roundtrip

found 3 days ago

Select American Airlines flight, departing Tue, Jul 15 from Austin-Bergstrom Intl. to Washington Dulles Intl., returning Sun, Jul 20, priced at $337 found 3 days ago

Tue, Jul 15 - Sun, Jul 20

AUS

Austin-Bergstrom Intl.

IAD

Washington Dulles Intl.

$339 Roundtrip, found 3 days ago

$339

Roundtrip

found 3 days ago

Select Delta flight, departing Tue, Jul 15 from Austin-Bergstrom Intl. to Washington Dulles Intl., returning Sun, Jul 20, priced at $339 found 3 days ago

Mon, Jul 14 - Sun, Jul 20

AUS

Austin-Bergstrom Intl.

IAD

Washington Dulles Intl.

$340 Roundtrip, found 3 days ago

$340

Roundtrip

found 3 days ago

Select Delta flight, departing Mon, Jul 14 from Austin-Bergstrom Intl. to Washington Dulles Intl., returning Sun, Jul 20, priced at $340 found 3 days ago

Tue, Jul 15 - Mon, Jul 21

AUS

Austin-Bergstrom Intl.

IAD

Washington Dulles Intl.

$344 Roundtrip, found 3 days ago

$344

Roundtrip

found 3 days ago

Select United flight, departing Tue, Jul 15 from Austin-Bergstrom Intl. to Washington Dulles Intl., returning Mon, Jul 21, priced at $344 found 3 days ago

Mon, Jul 14 - Sun, Jul 20

AUS

Austin-Bergstrom Intl.

IAD

Washington Dulles Intl.

$350 Roundtrip, found 3 days ago

$350

Roundtrip

found 3 days ago

Select United flight, departing Mon, Jul 14 from Austin-Bergstrom Intl. to Washington Dulles Intl., returning Sun, Jul 20, priced at $350 found 3 days ago

Tue, Jul 15 - Sun, Jul 20

AUS

Austin-Bergstrom Intl.

IAD

Washington Dulles Intl.

$356 Roundtrip, found 3 days ago

$356

Roundtrip

found 3 days ago

Select United flight, departing Tue, Jul 15 from Austin-Bergstrom Intl. to Washington Dulles Intl., returning Sun, Jul 20, priced at $356 found 3 days ago

Tue, Jul 15 - Mon, Jul 21

AUS

Austin-Bergstrom Intl.

IAD

Washington Dulles Intl.

$377 Roundtrip, found 3 days ago

$377

Roundtrip

found 3 days ago

Select American Airlines flight, departing Tue, Jul 15 from Austin-Bergstrom Intl. to Washington Dulles Intl., returning Mon, Jul 21, priced at $377 found 3 days ago