Cheap flights from Chicago to Blake Island

View AU$144 flight on Tue, 29 Jul. 2025Opens in a new window

Popular airlines from Chicago to Blake Island

  • American Airlines

    American Airlines

  • Alaska Airlines

    Alaska Airlines

  • Delta

    Delta

  • United

    United

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Cheap Flights from Chicago (CHI) to Blake Island (SEA)

Prices were available within the past 7 days for one-way flights and round trip tickets for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Sat, 16 Aug. - Sat, 23 Aug.
ORD
Chicago
SEA
Seattle
AU$288 Return, found 1 day ago
AU$288
Return
found 1 day ago
Select Alaska Airlines flight, departing Sat, 16 Aug. from Chicago to Seattle, returning Sat, 23 Aug., priced at AU$288 found 1 day ago
Delta
Sat, 16 Aug. - Sat, 23 Aug.
ORD
Chicago
SEA
Seattle
AU$289 Return, found 1 day ago
AU$289
Return
found 1 day ago
Select Delta flight, departing Sat, 16 Aug. from Chicago to Seattle, returning Sat, 23 Aug., priced at AU$289 found 1 day ago
Alaska Airlines
Sat, 16 Aug. - Sat, 23 Aug.
ORD
Chicago
SEA
Seattle
AU$303 Return, found 1 day ago
AU$303
Return
found 1 day ago
Select Alaska Airlines flight, departing Sat, 16 Aug. from Chicago to Seattle, returning Sat, 23 Aug., priced at AU$303 found 1 day ago
Delta
Sat, 16 Aug. - Sat, 23 Aug.
ORD
Chicago
SEA
Seattle
AU$321 Return, found 1 day ago
AU$321
Return
found 1 day ago
Select Delta flight, departing Sat, 16 Aug. from Chicago to Seattle, returning Sat, 23 Aug., priced at AU$321 found 1 day ago
American Airlines
Sat, 16 Aug. - Sat, 23 Aug.
ORD
Chicago
SEA
Seattle
AU$335 Return, found 1 day ago
AU$335
Return
found 1 day ago
Select American Airlines flight, departing Sat, 16 Aug. from Chicago to Seattle, returning Sat, 23 Aug., priced at AU$335 found 1 day ago
United
Sat, 16 Aug. - Sat, 23 Aug.
ORD
Chicago
SEA
Seattle
AU$357 Return, found 1 day ago
AU$357
Return
found 1 day ago
Select United flight, departing Sat, 16 Aug. from Chicago to Seattle, returning Sat, 23 Aug., priced at AU$357 found 1 day ago

Find the cheapest month to fly from Chicago (CHI) to Seattle (SEA)

September is typically the cheapest month to fly

From AU$148 - AU$340 per traveller.

Graph displaying average flight prices per month

*Available to Expedia members.