Flights from Chicago to Seattle

Cheapest flights from Chicago

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.

Sat, Aug 23 - Sat, Aug 30

ORD

O'Hare Intl.

SEA

Seattle - Tacoma Intl.

$184 Roundtrip, found 4 days ago

$184

Roundtrip

found 4 days ago

Select Alaska Airlines flight, departing Sat, Aug 23 from O'Hare Intl. to Seattle - Tacoma Intl., returning Sat, Aug 30, priced at $184 found 4 days ago

Sat, Aug 23 - Tue, Aug 26

ORD

O'Hare Intl.

SEA

Seattle - Tacoma Intl.

$189 Roundtrip, found 4 days ago

$189

Roundtrip

found 4 days ago

Select Hawaiian Airlines flight, departing Sat, Aug 23 from O'Hare Intl. to Seattle - Tacoma Intl., returning Tue, Aug 26, priced at $189 found 4 days ago

Thu, Aug 21 - Sat, Aug 30

ORD

O'Hare Intl.

SEA

Seattle - Tacoma Intl.

$198 Roundtrip, found 4 days ago

$198

Roundtrip

found 4 days ago

Select Hawaiian Airlines flight, departing Thu, Aug 21 from O'Hare Intl. to Seattle - Tacoma Intl., returning Sat, Aug 30, priced at $198 found 4 days ago

Sun, Sep 7 - Wed, Sep 10

ORD

O'Hare Intl.

SEA

Seattle - Tacoma Intl.

$203 Roundtrip, found 18 hours ago

$203

Roundtrip

found 18 hours ago

Select Alaska Airlines flight, departing Sun, Sep 7 from O'Hare Intl. to Seattle - Tacoma Intl., returning Wed, Sep 10, priced at $203 found 18 hours ago

Sun, Sep 7 - Wed, Sep 10

ORD

O'Hare Intl.

SEA

Seattle - Tacoma Intl.

$203 Roundtrip, found 18 hours ago

$203

Roundtrip

found 18 hours ago

Select United flight, departing Sun, Sep 7 from O'Hare Intl. to Seattle - Tacoma Intl., returning Wed, Sep 10, priced at $203 found 18 hours ago

Sun, Sep 7 - Wed, Sep 10

ORD

O'Hare Intl.

SEA

Seattle - Tacoma Intl.

$203 Roundtrip, found 18 hours ago

$203

Roundtrip

found 18 hours ago

Select American Airlines flight, departing Sun, Sep 7 from O'Hare Intl. to Seattle - Tacoma Intl., returning Wed, Sep 10, priced at $203 found 18 hours ago

Sun, Sep 7 - Wed, Sep 10

ORD

O'Hare Intl.

SEA

Seattle - Tacoma Intl.

$213 Roundtrip, found 18 hours ago

$213

Roundtrip

found 18 hours ago

Select Alaska Airlines flight, departing Sun, Sep 7 from O'Hare Intl. to Seattle - Tacoma Intl., returning Wed, Sep 10, priced at $213 found 18 hours ago

Sun, Sep 7 - Wed, Sep 10

ORD

O'Hare Intl.

SEA

Seattle - Tacoma Intl.

$213 Roundtrip, found 18 hours ago

$213

Roundtrip

found 18 hours ago

Select United flight, departing Sun, Sep 7 from O'Hare Intl. to Seattle - Tacoma Intl., returning Wed, Sep 10, priced at $213 found 18 hours ago

Wed, Aug 20 - Sat, Aug 30

ORD

O'Hare Intl.

SEA

Seattle - Tacoma Intl.

$214 Roundtrip, found 4 days ago

$214

Roundtrip

found 4 days ago

Select Hawaiian Airlines flight, departing Wed, Aug 20 from O'Hare Intl. to Seattle - Tacoma Intl., returning Sat, Aug 30, priced at $214 found 4 days ago

Thu, Sep 4 - Thu, Sep 11

ORD

O'Hare Intl.

SEA

Seattle - Tacoma Intl.

$217 Roundtrip, found 1 day ago

$217

Roundtrip

found 1 day ago

Select Alaska Airlines flight, departing Thu, Sep 4 from O'Hare Intl. to Seattle - Tacoma Intl., returning Thu, Sep 11, priced at $217 found 1 day ago

Sun, Sep 7 - Wed, Sep 10

ORD

O'Hare Intl.

SEA

Seattle - Tacoma Intl.

$219 Roundtrip, found 18 hours ago

$219

Roundtrip

found 18 hours ago

Select Alaska Airlines flight, departing Sun, Sep 7 from O'Hare Intl. to Seattle - Tacoma Intl., returning Wed, Sep 10, priced at $219 found 18 hours ago

Thu, Aug 21 - Sun, Aug 31

ORD

O'Hare Intl.

SEA

Seattle - Tacoma Intl.

$227 Roundtrip, found 4 days ago

$227

Roundtrip

found 4 days ago

Select Hawaiian Airlines flight, departing Thu, Aug 21 from O'Hare Intl. to Seattle - Tacoma Intl., returning Sun, Aug 31, priced at $227 found 4 days ago

Sun, Sep 7 - Wed, Sep 10

ORD

O'Hare Intl.

SEA

Seattle - Tacoma Intl.

$227 Roundtrip, found 18 hours ago

$227

Roundtrip

found 18 hours ago

Select Alaska Airlines flight, departing Sun, Sep 7 from O'Hare Intl. to Seattle - Tacoma Intl., returning Wed, Sep 10, priced at $227 found 18 hours ago

Thu, Sep 4 - Mon, Sep 8

ORD

O'Hare Intl.

SEA

Seattle - Tacoma Intl.

$233 Roundtrip, found 1 day ago

$233

Roundtrip

found 1 day ago

Select Alaska Airlines flight, departing Thu, Sep 4 from O'Hare Intl. to Seattle - Tacoma Intl., returning Mon, Sep 8, priced at $233 found 1 day ago

Thu, Aug 21 - Thu, Aug 28

ORD

O'Hare Intl.

SEA

Seattle - Tacoma Intl.

$247 Roundtrip, found 4 days ago

$247

Roundtrip

found 4 days ago

Select Delta flight, departing Thu, Aug 21 from O'Hare Intl. to Seattle - Tacoma Intl., returning Thu, Aug 28, priced at $247 found 4 days ago

Tue, Jul 29 - Tue, Aug 5

ORD

O'Hare Intl.

SEA

Seattle - Tacoma Intl.

$248 Roundtrip, found 1 day ago

$248

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Tue, Jul 29 from O'Hare Intl. to Seattle - Tacoma Intl., returning Tue, Aug 5, priced at $248 found 1 day ago

Fri, Sep 19 - Mon, Sep 22

MDW

Midway Intl.

SEA

Seattle - Tacoma Intl.

$268 Roundtrip, found 1 hour ago

$268

Roundtrip

found 1 hour ago

Select Frontier Airlines flight, departing Fri, Sep 19 from Midway Intl. to Seattle - Tacoma Intl., returning Mon, Sep 22, priced at $268 found 1 hour ago

Mon, Jul 28 - Mon, Aug 11

ORD

O'Hare Intl.

SEA

Seattle - Tacoma Intl.

$282 Roundtrip, found 6 days ago

$282

Roundtrip

found 6 days ago

Select Spirit Airlines flight, departing Mon, Jul 28 from O'Hare Intl. to Seattle - Tacoma Intl., returning Mon, Aug 11, priced at $282 found 6 days ago

Mon, Jul 28 - Mon, Aug 4

ORD

O'Hare Intl.

PAE

Seattle Paine Field Intl. Airport

$358 Roundtrip, found 1 day ago

$358

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Mon, Jul 28 from O'Hare Intl. to Seattle Paine Field Intl. Airport, returning Mon, Aug 4, priced at $358 found 1 day ago

Tue, Nov 25 - Sun, Nov 30

ORD

O'Hare Intl.

SEA

Seattle - Tacoma Intl.

$400 Roundtrip, found 2 days ago

$400

Roundtrip

found 2 days ago

Select Sun Country Airlines flight, departing Tue, Nov 25 from O'Hare Intl. to Seattle - Tacoma Intl., returning Sun, Nov 30, priced at $400 found 2 days ago