$132 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 $132 One Way, $256 Round Trip from Chicago to SeaTac
Prices starting at $256 for return flights and $132 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
Mayflower Park Hotel
Jul 25 - Jul 28
Chicago (CHI) to Seattle (SEA)
Seattle (SEA) to Chicago (CHI)
Reviewed on Nov 13, 2025
1 Hotel Seattle
Jul 20 - Jul 24
Chicago (CHI) to Seattle (SEA)
Reviewed on May 27, 2025
The State Hotel
Jul 25 - Jul 30
Chicago (CHI) to Seattle (SEA)
Seattle (SEA) to Chicago (CHI)
Reviewed on May 28, 2026
SeaTac first class flight packages
Oxford Seattle
Aug 4 - Aug 9
Chicago (ORD) to Seattle (SEA)
Seattle (SEA) to Chicago (ORD)
Reviewed on Jun 4, 2026
Kimpton Hotel Monaco Seattle by IHG
Aug 4 - Aug 9
Chicago (ORD) to Seattle (SEA)
Seattle (SEA) to Chicago (ORD)
Reviewed on Oct 20, 2025
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
It has never been easier to find cheap Chicago to SeaTac flights. Orbitz has some of the best deals around to save you more money on your flight, hotel, and vacation package for the trip you have been waiting for.
Plan Your Chicago to SeaTac Flights on the Go
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Get the Best Deals on Chicago to SeaTac Flights
Finding great deals on flights from Chicago to SeaTac is a snap with Orbitz. With our guaranteed low prices, you don’t have to worry if you are getting the best prices on air tickets, hotels, and cruises. And with all that money you saved, you can enjoy your SeaTac vacation even more.
Pile Up Miles With Discount Air Tickets
Not only can you find great bargains on Chicago to SeaTac flights, but you can rack up frequent flyer miles on the flights too. Enter your frequent flyer number on qualified flights when booking for Orbitz to see the miles pile up in your account.
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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.