Flights from Frederick to Seattle

Cheapest flights from Frederick

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.

Wed, Sep 3 - Tue, Sep 9

BWI

Baltimore Washington Intl. Thurgood Marshall

SEA

Seattle - Tacoma Intl.

$154 Roundtrip, found 10 hours ago

$154

Roundtrip

found 10 hours ago

Select Hawaiian Airlines flight, departing Wed, Sep 3 from Baltimore Washington Intl. Thurgood Marshall to Seattle - Tacoma Intl., returning Tue, Sep 9, priced at $154 found 10 hours ago

Sat, Sep 20 - Tue, Sep 23

BWI

Baltimore Washington Intl. Thurgood Marshall

SEA

Seattle - Tacoma Intl.

$167 Roundtrip, found 1 day ago

$167

Roundtrip

found 1 day ago

Select Alaska Airlines flight, departing Sat, Sep 20 from Baltimore Washington Intl. Thurgood Marshall to Seattle - Tacoma Intl., returning Tue, Sep 23, priced at $167 found 1 day ago

Sat, Sep 20 - Tue, Sep 23

BWI

Baltimore Washington Intl. Thurgood Marshall

SEA

Seattle - Tacoma Intl.

$176 Roundtrip, found 1 day ago

$176

Roundtrip

found 1 day ago

Select American Airlines flight, departing Sat, Sep 20 from Baltimore Washington Intl. Thurgood Marshall to Seattle - Tacoma Intl., returning Tue, Sep 23, priced at $176 found 1 day ago

Sat, Sep 20 - Tue, Sep 23

BWI

Baltimore Washington Intl. Thurgood Marshall

SEA

Seattle - Tacoma Intl.

$177 Roundtrip, found 1 day ago

$177

Roundtrip

found 1 day ago

Select Alaska Airlines flight, departing Sat, Sep 20 from Baltimore Washington Intl. Thurgood Marshall to Seattle - Tacoma Intl., returning Tue, Sep 23, priced at $177 found 1 day ago

Sat, Sep 20 - Tue, Sep 23

BWI

Baltimore Washington Intl. Thurgood Marshall

SEA

Seattle - Tacoma Intl.

$185 Roundtrip, found 1 day ago

$185

Roundtrip

found 1 day ago

Select American Airlines flight, departing Sat, Sep 20 from Baltimore Washington Intl. Thurgood Marshall to Seattle - Tacoma Intl., returning Tue, Sep 23, priced at $185 found 1 day ago

Sat, Aug 30 - Mon, Sep 8

BWI

Baltimore Washington Intl. Thurgood Marshall

SEA

Seattle - Tacoma Intl.

$189 Roundtrip, found 10 hours ago

$189

Roundtrip

found 10 hours ago

Select Hawaiian Airlines flight, departing Sat, Aug 30 from Baltimore Washington Intl. Thurgood Marshall to Seattle - Tacoma Intl., returning Mon, Sep 8, priced at $189 found 10 hours ago

Tue, Sep 23 - Tue, Sep 23

BWI

Baltimore Washington Intl. Thurgood Marshall

SEA

Seattle - Tacoma Intl.

$191 Roundtrip, found 1 day ago

$191

Roundtrip

found 1 day ago

Select Delta flight, departing Tue, Sep 23 from Baltimore Washington Intl. Thurgood Marshall to Seattle - Tacoma Intl., returning Tue, Sep 23, priced at $191 found 1 day ago

Mon, Sep 22 - Tue, Sep 30

BWI

Baltimore Washington Intl. Thurgood Marshall

SEA

Seattle - Tacoma Intl.

$193 Roundtrip, found 1 day ago

$193

Roundtrip

found 1 day ago

Select Hawaiian Airlines flight, departing Mon, Sep 22 from Baltimore Washington Intl. Thurgood Marshall to Seattle - Tacoma Intl., returning Tue, Sep 30, priced at $193 found 1 day ago

Sun, Aug 31 - Tue, Sep 9

BWI

Baltimore Washington Intl. Thurgood Marshall

SEA

Seattle - Tacoma Intl.

$197 Roundtrip, found 10 hours ago

$197

Roundtrip

found 10 hours ago

Select Delta flight, departing Sun, Aug 31 from Baltimore Washington Intl. Thurgood Marshall to Seattle - Tacoma Intl., returning Tue, Sep 9, priced at $197 found 10 hours ago

Thu, Sep 18 - Mon, Sep 29

BWI

Baltimore Washington Intl. Thurgood Marshall

SEA

Seattle - Tacoma Intl.

$197 Roundtrip, found 2 days ago

$197

Roundtrip

found 2 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 $197 found 2 days ago

Sat, Sep 20 - Tue, Sep 23

BWI

Baltimore Washington Intl. Thurgood Marshall

SEA

Seattle - Tacoma Intl.

$203 Roundtrip, found 1 day ago

$203

Roundtrip

found 1 day ago

Select American Airlines flight, departing Sat, Sep 20 from Baltimore Washington Intl. Thurgood Marshall to Seattle - Tacoma Intl., returning Tue, Sep 23, priced at $203 found 1 day ago

Sat, Sep 20 - Tue, Sep 23

BWI

Baltimore Washington Intl. Thurgood Marshall

SEA

Seattle - Tacoma Intl.

$203 Roundtrip, found 1 day ago

$203

Roundtrip

found 1 day ago

Select American Airlines flight, departing Sat, Sep 20 from Baltimore Washington Intl. Thurgood Marshall to Seattle - Tacoma Intl., returning Tue, Sep 23, priced at $203 found 1 day ago

Sat, Sep 20 - Mon, Sep 29

BWI

Baltimore Washington Intl. Thurgood Marshall

SEA

Seattle - Tacoma Intl.

$206 Roundtrip, found 1 day ago

$206

Roundtrip

found 1 day ago

Select Hawaiian Airlines flight, departing Sat, Sep 20 from Baltimore Washington Intl. Thurgood Marshall to Seattle - Tacoma Intl., returning Mon, Sep 29, priced at $206 found 1 day ago

Sat, Sep 20 - Tue, Sep 23

BWI

Baltimore Washington Intl. Thurgood Marshall

SEA

Seattle - Tacoma Intl.

$207 Roundtrip, found 1 day ago

$207

Roundtrip

found 1 day ago

Select American Airlines flight, departing Sat, Sep 20 from Baltimore Washington Intl. Thurgood Marshall to Seattle - Tacoma Intl., returning Tue, Sep 23, priced at $207 found 1 day ago

Sat, Sep 20 - Tue, Sep 23

BWI

Baltimore Washington Intl. Thurgood Marshall

SEA

Seattle - Tacoma Intl.

$212 Roundtrip, found 1 day ago

$212

Roundtrip

found 1 day ago

Select American Airlines flight, departing Sat, Sep 20 from Baltimore Washington Intl. Thurgood Marshall to Seattle - Tacoma Intl., returning Tue, Sep 23, priced at $212 found 1 day ago

Sat, Sep 20 - Tue, Sep 23

BWI

Baltimore Washington Intl. Thurgood Marshall

SEA

Seattle - Tacoma Intl.

$251 Roundtrip, found 1 day ago

$251

Roundtrip

found 1 day ago

Select United flight, departing Sat, Sep 20 from Baltimore Washington Intl. Thurgood Marshall to Seattle - Tacoma Intl., returning Tue, Sep 23, priced at $251 found 1 day ago

Tue, Jul 1 - Wed, Jul 16

BWI

Baltimore Washington Intl. Thurgood Marshall

SEA

Seattle - Tacoma Intl.

$260 Roundtrip, found 2 days ago

$260

Roundtrip

found 2 days 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 2 days ago

Thu, Aug 28 - Sun, Sep 7

BWI

Baltimore Washington Intl. Thurgood Marshall

SEA

Seattle - Tacoma Intl.

$270 Roundtrip, found 10 hours ago

$270

Roundtrip

found 10 hours ago

Select Frontier Airlines flight, departing Thu, Aug 28 from Baltimore Washington Intl. Thurgood Marshall to Seattle - Tacoma Intl., returning Sun, Sep 7, priced at $270 found 10 hours ago

Sat, Sep 13 - Fri, Oct 3

IAD

Washington Dulles Intl.

SEA

Seattle - Tacoma Intl.

$277 Roundtrip, found 5 days ago

$277

Roundtrip

found 5 days 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 5 days ago

Thu, Aug 7 - Sun, Aug 10

BWI

Baltimore Washington Intl. Thurgood Marshall

SEA

Seattle - Tacoma Intl.

$383 Roundtrip, found 17 hours ago

$383

Roundtrip

found 17 hours ago

Select Sun Country Airlines flight, departing Thu, Aug 7 from Baltimore Washington Intl. Thurgood Marshall to Seattle - Tacoma Intl., returning Sun, Aug 10, priced at $383 found 17 hours ago