Flights from Seattle to Frederick

Cheapest flights from Seattle

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.

Tue, Aug 19 - Sat, Aug 23

SEA

Seattle - Tacoma Intl.

IAD

Washington Dulles Intl.

$287 Roundtrip, found 3 days ago

$287

Roundtrip

found 3 days ago

Select United flight, departing Tue, Aug 19 from Seattle - Tacoma Intl. to Washington Dulles Intl., returning Sat, Aug 23, priced at $287 found 3 days ago

Wed, Aug 20 - Sat, Aug 23

SEA

Seattle - Tacoma Intl.

IAD

Washington Dulles Intl.

$307 Roundtrip, found 5 days ago

$307

Roundtrip

found 5 days ago

Select Delta flight, departing Wed, Aug 20 from Seattle - Tacoma Intl. to Washington Dulles Intl., returning Sat, Aug 23, priced at $307 found 5 days ago

Mon, Aug 18 - Thu, Aug 21

PAE

Seattle Paine Field Intl. Airport

IAD

Washington Dulles Intl.

$308 Roundtrip, found 3 days ago

$308

Roundtrip

found 3 days ago

Select Frontier Airlines flight, departing Mon, Aug 18 from Seattle Paine Field Intl. Airport to Washington Dulles Intl., returning Thu, Aug 21, priced at $308 found 3 days ago

Tue, Aug 19 - Fri, Aug 22

SEA

Seattle - Tacoma Intl.

IAD

Washington Dulles Intl.

$313 Roundtrip, found 3 days ago

$313

Roundtrip

found 3 days ago

Select United flight, departing Tue, Aug 19 from Seattle - Tacoma Intl. to Washington Dulles Intl., returning Fri, Aug 22, priced at $313 found 3 days ago

Tue, Aug 19 - Sat, Aug 23

SEA

Seattle - Tacoma Intl.

IAD

Washington Dulles Intl.

$317 Roundtrip, found 3 days ago

$317

Roundtrip

found 3 days ago

Select United flight, departing Tue, Aug 19 from Seattle - Tacoma Intl. to Washington Dulles Intl., returning Sat, Aug 23, priced at $317 found 3 days ago

Tue, Aug 19 - Sat, Aug 23

SEA

Seattle - Tacoma Intl.

IAD

Washington Dulles Intl.

$322 Roundtrip, found 3 days ago

$322

Roundtrip

found 3 days ago

Select American Airlines flight, departing Tue, Aug 19 from Seattle - Tacoma Intl. to Washington Dulles Intl., returning Sat, Aug 23, priced at $322 found 3 days ago

Tue, Aug 19 - Fri, Aug 22

SEA

Seattle - Tacoma Intl.

IAD

Washington Dulles Intl.

$327 Roundtrip, found 3 days ago

$327

Roundtrip

found 3 days ago

Select United flight, departing Tue, Aug 19 from Seattle - Tacoma Intl. to Washington Dulles Intl., returning Fri, Aug 22, priced at $327 found 3 days ago

Mon, Aug 18 - Thu, Aug 21

PAE

Seattle Paine Field Intl. Airport

IAD

Washington Dulles Intl.

$334 Roundtrip, found 5 days ago

$334

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Mon, Aug 18 from Seattle Paine Field Intl. Airport to Washington Dulles Intl., returning Thu, Aug 21, priced at $334 found 5 days ago

Tue, Aug 19 - Fri, Aug 22

SEA

Seattle - Tacoma Intl.

IAD

Washington Dulles Intl.

$337 Roundtrip, found 3 days ago

$337

Roundtrip

found 3 days ago

Select United flight, departing Tue, Aug 19 from Seattle - Tacoma Intl. to Washington Dulles Intl., returning Fri, Aug 22, priced at $337 found 3 days ago

Mon, Aug 18 - Thu, Aug 21

SEA

Seattle - Tacoma Intl.

IAD

Washington Dulles Intl.

$338 Roundtrip, found 3 days ago

$338

Roundtrip

found 3 days ago

Select Frontier Airlines flight, departing Mon, Aug 18 from Seattle - Tacoma Intl. to Washington Dulles Intl., returning Thu, Aug 21, priced at $338 found 3 days ago

Mon, Aug 18 - Thu, Aug 21

PAE

Seattle Paine Field Intl. Airport

IAD

Washington Dulles Intl.

$339 Roundtrip, found 3 days ago

$339

Roundtrip

found 3 days ago

Select Frontier Airlines flight, departing Mon, Aug 18 from Seattle Paine Field Intl. Airport to Washington Dulles Intl., returning Thu, Aug 21, priced at $339 found 3 days ago

Tue, Aug 19 - Sat, Aug 23

SEA

Seattle - Tacoma Intl.

IAD

Washington Dulles Intl.

$341 Roundtrip, found 3 days ago

$341

Roundtrip

found 3 days ago

Select United flight, departing Tue, Aug 19 from Seattle - Tacoma Intl. to Washington Dulles Intl., returning Sat, Aug 23, priced at $341 found 3 days ago

Tue, Aug 19 - Fri, Aug 22

SEA

Seattle - Tacoma Intl.

IAD

Washington Dulles Intl.

$342 Roundtrip, found 3 days ago

$342

Roundtrip

found 3 days ago

Select American Airlines flight, departing Tue, Aug 19 from Seattle - Tacoma Intl. to Washington Dulles Intl., returning Fri, Aug 22, priced at $342 found 3 days ago

Mon, Aug 18 - Fri, Aug 22

SEA

Seattle - Tacoma Intl.

IAD

Washington Dulles Intl.

$344 Roundtrip, found 3 days ago

$344

Roundtrip

found 3 days ago

Select Frontier Airlines flight, departing Mon, Aug 18 from Seattle - Tacoma Intl. to Washington Dulles Intl., returning Fri, Aug 22, priced at $344 found 3 days ago

Mon, Aug 4 - Thu, Aug 14

SEA

Seattle - Tacoma Intl.

IAD

Washington Dulles Intl.

$348 Roundtrip, found 5 days ago

$348

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Mon, Aug 4 from Seattle - Tacoma Intl. to Washington Dulles Intl., returning Thu, Aug 14, priced at $348 found 5 days ago

Tue, Aug 19 - Sat, Aug 23

SEA

Seattle - Tacoma Intl.

IAD

Washington Dulles Intl.

$351 Roundtrip, found 3 days ago

$351

Roundtrip

found 3 days ago

Select United flight, departing Tue, Aug 19 from Seattle - Tacoma Intl. to Washington Dulles Intl., returning Sat, Aug 23, priced at $351 found 3 days ago

Wed, Aug 20 - Sat, Aug 23

SEA

Seattle - Tacoma Intl.

IAD

Washington Dulles Intl.

$360 Roundtrip, found 3 days ago

$360

Roundtrip

found 3 days ago

Select Hawaiian Airlines flight, departing Wed, Aug 20 from Seattle - Tacoma Intl. to Washington Dulles Intl., returning Sat, Aug 23, priced at $360 found 3 days ago

Wed, Aug 20 - Sat, Aug 23

SEA

Seattle - Tacoma Intl.

IAD

Washington Dulles Intl.

$360 Roundtrip, found 3 days ago

$360

Roundtrip

found 3 days ago

Select Alaska Airlines flight, departing Wed, Aug 20 from Seattle - Tacoma Intl. to Washington Dulles Intl., returning Sat, Aug 23, priced at $360 found 3 days ago

Tue, Aug 19 - Sat, Aug 23

SEA

Seattle - Tacoma Intl.

IAD

Washington Dulles Intl.

$377 Roundtrip, found 3 days ago

$377

Roundtrip

found 3 days ago

Select American Airlines flight, departing Tue, Aug 19 from Seattle - Tacoma Intl. to Washington Dulles Intl., returning Sat, Aug 23, priced at $377 found 3 days ago

Wed, Apr 1 - Sun, Apr 12

SEA

Seattle - Tacoma Intl.

BWI

Baltimore Washington Intl. Thurgood Marshall

$512 Roundtrip, found 2 days ago

$512

Roundtrip

found 2 days ago

Select United flight, departing Wed, Apr 1 from Seattle - Tacoma Intl. to Baltimore Washington Intl. Thurgood Marshall, returning Sun, Apr 12, priced at $512 found 2 days ago