Cheap flights from Chicago to Auburn from CA $124

View CA $124 flight on Sun, Aug. 31, 2025Opens in a new window

Popular airlines from Chicago to Auburn

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Cheap flights from Chicago (CHI) to Auburn (SEA)

Prices were available within the past 7 days and start at CA $124 for one-way flights and CA $244 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Fri, Oct. 31 - Thu, Nov. 27
ORD
Chicago
SEA
Seattle
CA $244 Roundtrip, found 5 days ago
CA $244
Roundtrip
found 5 days ago
Select Delta flight, departing Fri, Oct. 31 from Chicago to Seattle, returning Thu, Nov. 27, priced at CA $244 found 5 days ago
Alaska Airlines
Fri, Oct. 31 - Wed, Dec. 3
ORD
Chicago
SEA
Seattle
CA $251 Roundtrip, found 5 days ago
CA $251
Roundtrip
found 5 days ago
Select Alaska Airlines flight, departing Fri, Oct. 31 from Chicago to Seattle, returning Wed, Dec. 3, priced at CA $251 found 5 days ago
American Airlines
Sat, Aug. 30 - Wed, Sep. 3
ORD
Chicago
SEA
Seattle
CA $252 Roundtrip, found 5 days ago
CA $252
Roundtrip
found 5 days ago
Select American Airlines flight, departing Sat, Aug. 30 from Chicago to Seattle, returning Wed, Sep. 3, priced at CA $252 found 5 days ago
American Airlines
Sat, Aug. 30 - Wed, Sep. 3
ORD
Chicago
SEA
Seattle
CA $252 Roundtrip, found 5 days ago
CA $252
Roundtrip
found 5 days ago
Select American Airlines flight, departing Sat, Aug. 30 from Chicago to Seattle, returning Wed, Sep. 3, priced at CA $252 found 5 days ago
Hawaiian Airlines
Sun, Aug. 24 - Sat, Aug. 30
ORD
Chicago
SEA
Seattle
CA $271 Roundtrip, found 3 days ago
CA $271
Roundtrip
found 3 days ago
Select Hawaiian Airlines flight, departing Sun, Aug. 24 from Chicago to Seattle, returning Sat, Aug. 30, priced at CA $271 found 3 days ago
United
Sat, Oct. 11 - Sat, Oct. 18
ORD
Chicago
SEA
Seattle
CA $383 Roundtrip, found 3 days ago
CA $383
Roundtrip
found 3 days ago
Select United flight, departing Sat, Oct. 11 from Chicago to Seattle, returning Sat, Oct. 18, priced at CA $383 found 3 days ago

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

September is typically the cheapest month to fly

From CA $134 - CA $296 per traveller.

Graph displaying average flight prices per month

*Available to Expedia members.