$71 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 $71 One Way, $160 Round Trip from Chicago to SeaTac
Prices starting at $160 for return flights and $71 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
citizenM Seattle Pioneer Square
Dec 5 - Dec 7
Chicago (CHI) to Seattle (SEA)
Seattle (SEA) to Chicago (CHI)
Reviewed on Oct 2, 2025
1 Hotel Seattle
Dec 12 - Dec 14
Chicago (ORD) to Seattle (SEA)
Reviewed on May 27, 2025
Level Seattle Downtown - South Lake Union
Dec 10 - Dec 14
Chicago (CHI) to Seattle (SEA)
Reviewed on Aug 13, 2024
SeaTac packages with premium economy flights
Kimpton Hotel Vintage Seattle by IHG
Nov 25 - Nov 28
Chicago (ORD) to Seattle (SEA)
Seattle (SEA) to Chicago (ORD)
Reviewed on Oct 1, 2024
citizenM Seattle Pioneer Square
Nov 25 - Nov 28
Chicago (ORD) to Seattle (SEA)
Seattle (SEA) to Chicago (ORD)
Reviewed on Oct 2, 2025
Hilton Motif Seattle
Nov 25 - Nov 28
Chicago (ORD) to Seattle (SEA)
Seattle (SEA) to Chicago (ORD)
Reviewed on Aug 22, 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
Orbitz guarantees you low prices on flights from Chicago to SeaTac. In addition to low fares on Chicago to SeaTac flights, Orbitz offers fantastic savings on hotels, cruises, vacation packages, and more.
Earn Miles While Saving
Besides helping you fly for the lowest fares, Orbitz lets you earn miles for your frequent flyer program for certain flights from Chicago to SeaTac. If you are a member of the frequent flyer or loyalty program offered by the airline you booked through Orbitz or a partner airline’s, simply add your frequent flyer number to your Orbitz reservation to get credit for your Chicago to SeaTac flights.
Travel Planning Made Easy
We help take some of the anxiety out of your Chicago to SeaTac flights with free flight alerts. We will let you know of flight changes and delays to your flights from Chicago to SeaTac by email, voicemail, or text messages to your mobile phone. Alerts can also be sent to up to six other contacts to keep family and business teams informed.
Use Mobile Apps with Orbitz
Orbitz lets you find the best deals on Chicago to SeaTac flights while on the go, with our easy-to-use Android and iPhone mobile apps. Easily check flight status, gate numbers, and other flight details all in one place with our app—which is great when you are in a hurry. You can use the apps to access great mobile deals on flights and amazing hotel rooms.
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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.