
Book Cheap American Airlines flight from Chicago (CHI) to Seattle (SEA) from CA $138
Find The Best Day to Book a Cheap American Airlines Flights From Chicago to Seattle
Cheapest American Airlines Flights from Chicago (CHI) to Seattle (SEA)
The cheapest flights to Seattle - Tacoma Intl. found within the past 7 days were CA $820 round trip and CA $138 one way. Prices and availability subject to change. Additional terms may apply.
Grab a great American Airlines flight from CHI to SEA
To find a great deal on American Airlines flights with Travelocity, simply enter your origin and destination airports, pick your travel dates, and hit search. From here, you can sort by price, flight duration, and arrival/departure time. You can also filter to find nonstop flights.
Flying American Airlines Illinois to Seattle gives you fights to choose from. With that direct flight time of , you’ll be touching down before you know it.
Find cheap flights with American Airlines between Illinois and Seattle
American Airlines has a range of great fares on stacks of flights, and to find the most affordable for you, there are a few tricks you can try. Booking in advance, for example, is a great way to grab a fantastic deal. Also, choose the cheapest month, if you can. One-way flights from Illinois to Seattle with American Airlines are December.
The more flexible you are, the more affordable flights you’re likely to find. Consider one-way flights and connecting flights, as well as standard roundtrip and direct options. Even if you’re flying today, cheap last-minute flights are easy to find by entering your travel dates and hitting search.
Reasons to book your American Airlines flights with Travelocity
Travelocity makes it easy to book a seat, anywhere in the world. The vast inventory, fast search, and advanced filters put some of the best deals on the planet in one place. Whether you’re traveling on business, with friends, family, or on your own, take your pick from some fantastic options. And with free cancellation and pay later options, you can travel more and worry less.
Airport code | Country | Airport name | Number of flights |
|---|---|---|---|
| DFW | USA | Dallas-Fort Worth Intl. | 599 |
| CLT | USA | Charlotte-Douglas Intl. | 536 |
| ORD | USA | O'Hare Intl. | 317 |
| PHL | USA | Philadelphia Intl. | 247 |
| MIA | USA | Miami Intl. | 193 |
| DCA | USA | Ronald Reagan Washington National | 152 |
| PHX | USA | Sky Harbor Intl. | 141 |
| LAX | USA | Los Angeles Intl. | 81 |
| LGA | USA | LaGuardia | 72 |
| BOS | USA | Logan Intl. | 57 |
Travelers ❤️ these 🏨 after their flight to Seattle

Coast Gateway Hotel
Easy check in
Reviewed on Oct 27, 2025

SureStay Hotel by Best Western SeaTac Airport North
Stayed for one night, I like that the room is bigger that I expected, clean room and friendly staff.
Reviewed on Oct 27, 2025

Country Inn & Suites by Radisson, Seattle-Tacoma International Airport, WA
This hotel was absolutely amazing. I’m not sure why others wrote bad reviews, the rooms are clean, bathroom clean, the whole hotel was super clean, front desk staff was quick, attentive, polite, knowledgeable. Our shuttle to airport was not only on time, but early, and very communicative. The only ...
Reviewed on Oct 25, 2025
Want more than a(n) American Airlines Flight from Chicago to Seattle?
Top American Airlines Flight Routes from SEA
Domestic
- Toronto to New York (YYZ - JFK)
- Toronto to Cancun (YYZ - CUN)
- Vancouver to Delhi (YVR - DEL)
- Toronto to Mumbai (YYZ - BOM)
- Montreal to Cancun (YUL - CUN)
- Toronto to Fort Lauderdale (YYZ - FLL)
- Toronto to Miami (YYZ - MIA)
- Montreal to Fort Lauderdale (YUL - FLL)
- Montreal to Delhi (YUL - DEL)
- Toronto to Lahore (YYZ - LHE)
International
- Montreal to Paris (YUL - CDG)
- Toronto to Fort Lauderdale (YYZ - FLL)
- Toronto to Karachi (YYZ - KHI)
- Toronto to Los Angeles (YYZ - LAX)
- Toronto to Miami (YYZ - MIA)
- Vancouver to London (YVR - LHR)
- Toronto to Cancun (YYZ - CUN)
- Montreal to Delhi (YUL - DEL)
- Montreal to Fort Lauderdale (YUL - FLL)
- Toronto to Karachi (YYZ - KHI)
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