Flights from Washington to Seattle

Cheapest flights from Washington

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 5 - Thu, Aug 7

BWI

Baltimore Washington Intl. Thurgood Marshall

SEA

Seattle - Tacoma Intl.

$207 Roundtrip, found 4 days ago

$207

Roundtrip

found 4 days ago

Select Delta flight, departing Tue, Aug 5 from Baltimore Washington Intl. Thurgood Marshall to Seattle - Tacoma Intl., returning Thu, Aug 7, priced at $207 found 4 days ago

Wed, Aug 6 - Thu, Aug 14

BWI

Baltimore Washington Intl. Thurgood Marshall

SEA

Seattle - Tacoma Intl.

$233 Roundtrip, found 17 hours ago

$233

Roundtrip

found 17 hours ago

Select Delta flight, departing Wed, Aug 6 from Baltimore Washington Intl. Thurgood Marshall to Seattle - Tacoma Intl., returning Thu, Aug 14, priced at $233 found 17 hours ago

Tue, Jul 1 - Wed, Jul 16

BWI

Baltimore Washington Intl. Thurgood Marshall

SEA

Seattle - Tacoma Intl.

$234 Roundtrip, found 1 day ago

$234

Roundtrip

found 1 day ago

Select Spirit Airlines flight, departing Tue, Jul 1 from Baltimore Washington Intl. Thurgood Marshall to Seattle - Tacoma Intl., returning Wed, Jul 16, priced at $234 found 1 day ago

Thu, Sep 18 - Mon, Sep 29

BWI

Baltimore Washington Intl. Thurgood Marshall

SEA

Seattle - Tacoma Intl.

$242 Roundtrip, found 5 days ago

$242

Roundtrip

found 5 days ago

Select Alaska Airlines flight, departing Thu, Sep 18 from Baltimore Washington Intl. Thurgood Marshall to Seattle - Tacoma Intl., returning Mon, Sep 29, priced at $242 found 5 days ago

Tue, Jul 1 - Wed, Jul 16

BWI

Baltimore Washington Intl. Thurgood Marshall

SEA

Seattle - Tacoma Intl.

$253 Roundtrip, found 1 day ago

$253

Roundtrip

found 1 day ago

Select United flight, departing Tue, Jul 1 from Baltimore Washington Intl. Thurgood Marshall to Seattle - Tacoma Intl., returning Wed, Jul 16, priced at $253 found 1 day ago

Sat, Sep 13 - Sat, Oct 4

IAD

Washington Dulles Intl.

SEA

Seattle - Tacoma Intl.

$257 Roundtrip, found 1 day ago

$257

Roundtrip

found 1 day ago

Select Delta flight, departing Sat, Sep 13 from Washington Dulles Intl. to Seattle - Tacoma Intl., returning Sat, Oct 4, priced at $257 found 1 day ago

Tue, Aug 5 - Wed, Aug 6

BWI

Baltimore Washington Intl. Thurgood Marshall

SEA

Seattle - Tacoma Intl.

$259 Roundtrip, found 18 hours ago

$259

Roundtrip

found 18 hours ago

Select Delta flight, departing Tue, Aug 5 from Baltimore Washington Intl. Thurgood Marshall to Seattle - Tacoma Intl., returning Wed, Aug 6, priced at $259 found 18 hours ago

Thu, Sep 18 - Mon, Sep 29

BWI

Baltimore Washington Intl. Thurgood Marshall

SEA

Seattle - Tacoma Intl.

$260 Roundtrip, found 5 days ago

$260

Roundtrip

found 5 days ago

Select Sun Country Airlines flight, departing Thu, Sep 18 from Baltimore Washington Intl. Thurgood Marshall to Seattle - Tacoma Intl., returning Mon, Sep 29, priced at $260 found 5 days ago

Tue, Jul 1 - Wed, Jul 16

BWI

Baltimore Washington Intl. Thurgood Marshall

SEA

Seattle - Tacoma Intl.

$260 Roundtrip, found 1 day ago

$260

Roundtrip

found 1 day ago

Select Spirit Airlines flight, departing Tue, Jul 1 from Baltimore Washington Intl. Thurgood Marshall to Seattle - Tacoma Intl., returning Wed, Jul 16, priced at $260 found 1 day ago

Thu, Sep 18 - Mon, Sep 29

BWI

Baltimore Washington Intl. Thurgood Marshall

SEA

Seattle - Tacoma Intl.

$262 Roundtrip, found 5 days ago

$262

Roundtrip

found 5 days ago

Select Spirit Airlines flight, departing Thu, Sep 18 from Baltimore Washington Intl. Thurgood Marshall to Seattle - Tacoma Intl., returning Mon, Sep 29, priced at $262 found 5 days ago

Mon, Aug 11 - Thu, Aug 14

BWI

Baltimore Washington Intl. Thurgood Marshall

SEA

Seattle - Tacoma Intl.

$263 Roundtrip, found 17 hours ago

$263

Roundtrip

found 17 hours ago

Select Delta flight, departing Mon, Aug 11 from Baltimore Washington Intl. Thurgood Marshall to Seattle - Tacoma Intl., returning Thu, Aug 14, priced at $263 found 17 hours ago

Sun, Aug 3 - Wed, Aug 6

BWI

Baltimore Washington Intl. Thurgood Marshall

SEA

Seattle - Tacoma Intl.

$264 Roundtrip, found 4 days ago

$264

Roundtrip

found 4 days ago

Select Frontier Airlines flight, departing Sun, Aug 3 from Baltimore Washington Intl. Thurgood Marshall to Seattle - Tacoma Intl., returning Wed, Aug 6, priced at $264 found 4 days ago

Wed, Jun 11 - Sat, Jun 14

BWI

Baltimore Washington Intl. Thurgood Marshall

SEA

Seattle - Tacoma Intl.

$270 Roundtrip, found 6 days ago

$270

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Wed, Jun 11 from Baltimore Washington Intl. Thurgood Marshall to Seattle - Tacoma Intl., returning Sat, Jun 14, priced at $270 found 6 days ago

Sat, Sep 13 - Fri, Oct 3

IAD

Washington Dulles Intl.

SEA

Seattle - Tacoma Intl.

$277 Roundtrip, found 1 day ago

$277

Roundtrip

found 1 day ago

Select Hawaiian Airlines flight, departing Sat, Sep 13 from Washington Dulles Intl. to Seattle - Tacoma Intl., returning Fri, Oct 3, priced at $277 found 1 day ago

Thu, Sep 18 - Mon, Sep 29

BWI

Baltimore Washington Intl. Thurgood Marshall

SEA

Seattle - Tacoma Intl.

$277 Roundtrip, found 5 days ago

$277

Roundtrip

found 5 days ago

Select Alaska Airlines flight, departing Thu, Sep 18 from Baltimore Washington Intl. Thurgood Marshall to Seattle - Tacoma Intl., returning Mon, Sep 29, priced at $277 found 5 days ago

Wed, Aug 6 - Mon, Aug 18

DCA

Ronald Reagan Washington National

SEA

Seattle - Tacoma Intl.

$280 Roundtrip, found 18 hours ago

$280

Roundtrip

found 18 hours ago

Select Frontier Airlines flight, departing Wed, Aug 6 from Ronald Reagan Washington National to Seattle - Tacoma Intl., returning Mon, Aug 18, priced at $280 found 18 hours ago

Thu, Sep 18 - Mon, Sep 29

BWI

Baltimore Washington Intl. Thurgood Marshall

SEA

Seattle - Tacoma Intl.

$292 Roundtrip, found 5 days ago

$292

Roundtrip

found 5 days ago

Select American Airlines flight, departing Thu, Sep 18 from Baltimore Washington Intl. Thurgood Marshall to Seattle - Tacoma Intl., returning Mon, Sep 29, priced at $292 found 5 days ago

Tue, Jul 22 - Sun, Jul 27

IAD

Washington Dulles Intl.

SEA

Seattle - Tacoma Intl.

$297 Roundtrip, found 6 days ago

$297

Roundtrip

found 6 days ago

Select United flight, departing Tue, Jul 22 from Washington Dulles Intl. to Seattle - Tacoma Intl., returning Sun, Jul 27, priced at $297 found 6 days ago

Thu, Jul 31 - Sun, Aug 3

BWI

Baltimore Washington Intl. Thurgood Marshall

SEA

Seattle - Tacoma Intl.

$423 Roundtrip, found 4 days ago

$423

Roundtrip

found 4 days ago

Select Sun Country Airlines flight, departing Thu, Jul 31 from Baltimore Washington Intl. Thurgood Marshall to Seattle - Tacoma Intl., returning Sun, Aug 3, priced at $423 found 4 days ago

Fri, Aug 8 - Sun, Aug 10

DCA

Ronald Reagan Washington National

SEA

Seattle - Tacoma Intl.

$810 Roundtrip, found 18 hours ago

$810

Roundtrip

found 18 hours ago

Select JetBlue Airways flight, departing Fri, Aug 8 from Ronald Reagan Washington National to Seattle - Tacoma Intl., returning Sun, Aug 10, priced at $810 found 18 hours ago