Flights from Chicago to Copalis Crossing

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.

Tue, Sep 9 - Sat, Sep 20

ORD

O'Hare Intl.

SEA

Seattle - Tacoma Intl.

$189 Roundtrip, found 1 hour ago

$189

Roundtrip

found 1 hour ago

Select Alaska Airlines flight, departing Tue, Sep 9 from O'Hare Intl. to Seattle - Tacoma Intl., returning Sat, Sep 20, priced at $189 found 1 hour ago

Tue, Aug 12 - Tue, Aug 19

ORD

O'Hare Intl.

SEA

Seattle - Tacoma Intl.

$189 Roundtrip, found 4 days ago

$189

Roundtrip

found 4 days ago

Select Delta flight, departing Tue, Aug 12 from O'Hare Intl. to Seattle - Tacoma Intl., returning Tue, Aug 19, priced at $189 found 4 days ago

Tue, Aug 12 - Sat, Aug 16

ORD

O'Hare Intl.

SEA

Seattle - Tacoma Intl.

$210 Roundtrip, found 4 days ago

$210

Roundtrip

found 4 days ago

Select Delta flight, departing Tue, Aug 12 from O'Hare Intl. to Seattle - Tacoma Intl., returning Sat, Aug 16, priced at $210 found 4 days ago

Thu, Sep 11 - Sat, Sep 20

ORD

O'Hare Intl.

SEA

Seattle - Tacoma Intl.

$213 Roundtrip, found 1 hour ago

$213

Roundtrip

found 1 hour ago

Select Frontier Airlines flight, departing Thu, Sep 11 from O'Hare Intl. to Seattle - Tacoma Intl., returning Sat, Sep 20, priced at $213 found 1 hour ago

Tue, Aug 12 - Sat, Aug 23

ORD

O'Hare Intl.

SEA

Seattle - Tacoma Intl.

$219 Roundtrip, found 4 days ago

$219

Roundtrip

found 4 days ago

Select Hawaiian Airlines flight, departing Tue, Aug 12 from O'Hare Intl. to Seattle - Tacoma Intl., returning Sat, Aug 23, priced at $219 found 4 days ago

Tue, Sep 9 - Thu, Sep 18

ORD

O'Hare Intl.

SEA

Seattle - Tacoma Intl.

$219 Roundtrip, found 1 hour ago

$219

Roundtrip

found 1 hour ago

Select Hawaiian Airlines flight, departing Tue, Sep 9 from O'Hare Intl. to Seattle - Tacoma Intl., returning Thu, Sep 18, priced at $219 found 1 hour ago

Thu, Sep 11 - Mon, Sep 22

ORD

O'Hare Intl.

SEA

Seattle - Tacoma Intl.

$221 Roundtrip, found 1 hour ago

$221

Roundtrip

found 1 hour ago

Select Frontier Airlines flight, departing Thu, Sep 11 from O'Hare Intl. to Seattle - Tacoma Intl., returning Mon, Sep 22, priced at $221 found 1 hour ago

Thu, Sep 11 - Fri, Sep 19

ORD

O'Hare Intl.

SEA

Seattle - Tacoma Intl.

$239 Roundtrip, found 1 hour ago

$239

Roundtrip

found 1 hour ago

Select Frontier Airlines flight, departing Thu, Sep 11 from O'Hare Intl. to Seattle - Tacoma Intl., returning Fri, Sep 19, priced at $239 found 1 hour ago

Thu, Aug 14 - Sat, Aug 16

ORD

O'Hare Intl.

SEA

Seattle - Tacoma Intl.

$240 Roundtrip, found 4 days ago

$240

Roundtrip

found 4 days ago

Select Delta flight, departing Thu, Aug 14 from O'Hare Intl. to Seattle - Tacoma Intl., returning Sat, Aug 16, priced at $240 found 4 days ago

Thu, Aug 14 - Sat, Aug 23

ORD

O'Hare Intl.

SEA

Seattle - Tacoma Intl.

$249 Roundtrip, found 4 days ago

$249

Roundtrip

found 4 days ago

Select Hawaiian Airlines flight, departing Thu, Aug 14 from O'Hare Intl. to Seattle - Tacoma Intl., returning Sat, Aug 23, priced at $249 found 4 days ago

Thu, Sep 11 - Thu, Sep 18

ORD

O'Hare Intl.

SEA

Seattle - Tacoma Intl.

$249 Roundtrip, found 1 hour ago

$249

Roundtrip

found 1 hour ago

Select Hawaiian Airlines flight, departing Thu, Sep 11 from O'Hare Intl. to Seattle - Tacoma Intl., returning Thu, Sep 18, priced at $249 found 1 hour ago

Tue, Jul 15 - Mon, Jul 21

ORD

O'Hare Intl.

SEA

Seattle - Tacoma Intl.

$249 Roundtrip, found 1 day ago

$249

Roundtrip

found 1 day ago

Select Spirit Airlines flight, departing Tue, Jul 15 from O'Hare Intl. to Seattle - Tacoma Intl., returning Mon, Jul 21, priced at $249 found 1 day ago

Fri, Sep 12 - Sun, Sep 21

ORD

O'Hare Intl.

SEA

Seattle - Tacoma Intl.

$249 Roundtrip, found 6 days ago

$249

Roundtrip

found 6 days ago

Select American Airlines flight, departing Fri, Sep 12 from O'Hare Intl. to Seattle - Tacoma Intl., returning Sun, Sep 21, priced at $249 found 6 days ago

Fri, Jul 18 - Tue, Jul 22

ORD

O'Hare Intl.

SEA

Seattle - Tacoma Intl.

$253 Roundtrip, found 1 day ago

$253

Roundtrip

found 1 day ago

Select Delta flight, departing Fri, Jul 18 from O'Hare Intl. to Seattle - Tacoma Intl., returning Tue, Jul 22, priced at $253 found 1 day ago

Fri, Jul 18 - Mon, Jul 21

ORD

O'Hare Intl.

SEA

Seattle - Tacoma Intl.

$269 Roundtrip, found 1 day ago

$269

Roundtrip

found 1 day ago

Select Spirit Airlines flight, departing Fri, Jul 18 from O'Hare Intl. to Seattle - Tacoma Intl., returning Mon, Jul 21, priced at $269 found 1 day ago

Mon, Jul 14 - Mon, Jul 21

ORD

O'Hare Intl.

SEA

Seattle - Tacoma Intl.

$272 Roundtrip, found 1 day ago

$272

Roundtrip

found 1 day ago

Select Spirit Airlines flight, departing Mon, Jul 14 from O'Hare Intl. to Seattle - Tacoma Intl., returning Mon, Jul 21, priced at $272 found 1 day ago

Thu, Jul 17 - Sat, Jul 19

ORD

O'Hare Intl.

SEA

Seattle - Tacoma Intl.

$280 Roundtrip, found 1 day ago

$280

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Thu, Jul 17 from O'Hare Intl. to Seattle - Tacoma Intl., returning Sat, Jul 19, priced at $280 found 1 day ago

Tue, Jul 15 - Thu, Jul 17

ORD

O'Hare Intl.

SEA

Seattle - Tacoma Intl.

$283 Roundtrip, found 1 day ago

$283

Roundtrip

found 1 day ago

Select Spirit Airlines flight, departing Tue, Jul 15 from O'Hare Intl. to Seattle - Tacoma Intl., returning Thu, Jul 17, priced at $283 found 1 day ago

Sat, Jul 19 - Tue, Jul 22

ORD

O'Hare Intl.

SEA

Seattle - Tacoma Intl.

$293 Roundtrip, found 1 day ago

$293

Roundtrip

found 1 day ago

Select Alaska Airlines flight, departing Sat, Jul 19 from O'Hare Intl. to Seattle - Tacoma Intl., returning Tue, Jul 22, priced at $293 found 1 day ago

Mon, Jul 14 - Thu, Jul 17

ORD

O'Hare Intl.

SEA

Seattle - Tacoma Intl.

$294 Roundtrip, found 1 day ago

$294

Roundtrip

found 1 day ago

Select Alaska Airlines flight, departing Mon, Jul 14 from O'Hare Intl. to Seattle - Tacoma Intl., returning Thu, Jul 17, priced at $294 found 1 day ago