
Popular airlines from Chicago to Cascade Loop Scenic Byway
Alaska Airlines
Southwest Airlines
Delta
American Airlines
United
Spirit Airlines
JetBlue Airways
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Cheap Flights from Chicago to Cascade Loop Scenic Byway (CHI-SEA)
Prices were available within the past 7 days and start at $125 for one-way flights and $210 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Sat, Sep 13 - Tue, Sep 23
ORD
Chicago
BLI
Bellingham
$210 Roundtrip, found 2 days ago
$210
Roundtrip
found 2 days ago

Sat, Sep 13 - Thu, Sep 18
ORD
Chicago
BLI
Bellingham
$220 Roundtrip, found 2 days ago
$220
Roundtrip
found 2 days ago

Mon, Sep 15 - Fri, Sep 19
ORD
Chicago
BLI
Bellingham
$230 Roundtrip, found 2 days ago
$230
Roundtrip
found 2 days ago

Sat, Sep 27 - Wed, Oct 1
ORD
Chicago
BLI
Bellingham
$250 Roundtrip, found 13 hours ago
$250
Roundtrip
found 13 hours ago

Fri, Jul 18 - Mon, Jul 21
ORD
Chicago
PAE
Seattle
$269 Roundtrip, found 1 hour ago
$269
Roundtrip
found 1 hour ago

Mon, Sep 15 - Sat, Sep 20
ORD
Chicago
BLI
Bellingham
$551 Roundtrip, found 2 days ago
$551
Roundtrip
found 2 days ago
Find the cheapest month to fly from Chicago (CHI) to Seattle (SEA)
September is typically the cheapest month to fly
From $98 - $217 per traveler.
Graph displaying average flight prices per month
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