$47 Cheap flight deals from Chicago (CHI) to SeaTac (SEA)
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This Weekend's Flight Deals from Chicago to SeaTac
This weekend's flight prices found within the past 7 days, for the period specified. Prices and availability are subject to change. Additional terms apply.
Airfares from $47 One Way, $90 Round Trip from Chicago to SeaTac
Prices starting at $90 for return flights and $47 for one-way flights to SeaTac were the cheapest prices found within the past 7 days, for the period specified. Prices and availability are subject to change. Additional terms apply.
SeaTac economy flight packages
Mediterranean Inn
Feb 12 - Feb 15
Chicago (CHI) to Seattle (SEA)
Reviewed on Jan 2, 2026
1 Hotel Seattle
Mar 5 - Mar 10
Chicago (CHI) to Seattle (SEA)
Seattle (SEA) to Chicago (CHI)
Reviewed on May 27, 2025
Coast Seattle Downtown Hotel by APA
Mar 5 - Mar 10
Chicago (CHI) to Seattle (SEA)
Seattle (SEA) to Chicago (CHI)
Reviewed on Jan 2, 2026
More About Flying To SeaTac from Chicago
Route Information for Flights from Chicago to SeaTac
Origin Airport IATA Code | CHI |
|---|---|
Destination Airport IATA Code | SEA |
Distance | |
Direct Flight Airlines | |
Earliest Flight Arrival | |
Latest Flight Arrival |
Chicago to SeaTac
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Find Low Prices in One Place
Booking a trip from Chicago to SeaTac has never been easier. Not only will you find great deals on flights, we offer bargains on cruises, car rentals, top-notch hotels, and more. You can also research and add local activities in SeaTac to your flight or hotel reservation to keep the kids happy and active.
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Don’t Miss out on Miles
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Flights from Chicago
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SeaTac Airports
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Fare, taxes & fees: Fares include all taxes and fees, except baggage fees. Rates shown reflect fares found by other Orbitz users over the past 7 days. Due to rapidly changing airline prices & seat availability, these fares may no longer be available.
Refunds/changes/cancellations: Itinerary changes, if permitted for the fare, will have a $30 service fee charged by Orbitz. Additional airline charges may apply.
Other conditions: Schedules, fares and rules are subject to change without notice. Seats are limited and may not be available on all flights/dates or in all markets. Lower fares may be available. Fares will not be honored retroactively or in exchange for any wholly/partially unused ticket. Tickets are non-transferable and non-refundable. Fare rules are provided for the selected itinerary before booking.