
Book Cheap American Airlines flight from Chicago (CHI) to Seattle (SEA) from CA $239
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 $377 round trip and CA $239 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 May.
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
Staff was accommodating and let me use a conference room so I could meet with clients. It was really close to airport so we took link light rail all over Seattle. It was so easy and saved a lot of time and money!
Reviewed on Dec 17, 2025

Country Inn & Suites by Radisson, Seattle-Tacoma International Airport, WA
Good
Reviewed on Dec 18, 2025

SureStay Hotel by Best Western SeaTac Airport North
Front desk staff as great and room was very spotless and spacious. It made you feel good walking in.
Reviewed on Dec 12, 2025
Want more than a(n) American Airlines Flight from Chicago to Seattle?
Top American Airlines Flight Routes from SEA
Domestic
- Toronto to Lahore (YYZ - LHE)
- Toronto to Delhi (YYZ - DEL)
- Toronto to Los Angeles (YYZ - LAX)
- Toronto to Fort Lauderdale (YYZ - FLL)
- Montreal to Miami (YUL - MIA)
- Toronto to Dubai (YYZ - DXB)
- Toronto to Las Vegas (YYZ - LAS)
- Toronto to Cancun (YYZ - CUN)
- Vancouver to Delhi (YVR - DEL)
- Toronto to Punta Cana (YYZ - PUJ)
International
- Toronto to Karachi (YYZ - KHI)
- Toronto to Orlando (YYZ - MCO)
- Toronto to Los Angeles (YYZ - LAX)
- Toronto to Cancun (YYZ - CUN)
- Toronto to Punta Cana (YYZ - PUJ)
- Vancouver to Delhi (YVR - DEL)
- Toronto to Dubai (YYZ - DXB)
- Toronto to Karachi (YYZ - KHI)
- Toronto to Las Vegas (YYZ - LAS)
- Montreal to Las Vegas (YUL - LAS)
Most Popular
- Vancouver to Palm Springs (YVR - PSP)
- Vancouver to Las Vegas (YVR - LAS)
- Detroit to Dallas (DTW - DFW)
- WestJet Vancouver (YVR) to Las Vegas (LAS) flights
- Montreal to Fort Lauderdale (YUL - FLL)
- Buffalo to Dallas (BUF - DFW)
- Vancouver to Fort Lauderdale (YVR - FLL)
- Delta Detroit (DTW) to Las Vegas (LAS) flights
- JetBlue Airways Buffalo (BUF) to Boston (BOS) flights
- Detroit to Fort Lauderdale (DTW - FLL)
- Fort Lauderdale to Toronto (FLL - YYZ)
- Vancouver to San Diego (YVR - SAN)
- Toronto to Seattle (YYZ - SEA)
- Vancouver to Dallas (YVR - DFW)
- Toronto to Dallas (YYZ - DFW)
- JetBlue Airways Buffalo (BUF) to Fort Lauderdale (FLL) flights
- Porter Airlines Toronto (YTZ) to Philadelphia (PHL) flights
- Air Canada Toronto (YYZ) to Las Vegas (LAS) flights
- WestJet Edmonton (YEG) to Las Vegas (LAS) flights
- Toronto to New York (YYZ - NYC)
- Toronto to Philadelphia (YYZ - PHL)
- St. Louis to Gulf Shores (STL - GUF)
- Air Canada Toronto (YYZ) to Fort Lauderdale (FLL) flights
- Toronto to Las Vegas (YYZ - LAS)
- WestJet Calgary (YYC) to Seattle (SEA) flights
- Swoop Abbotsford (YXX) to Las Vegas (LAS) flights
- Spirit Airlines Niagara Falls (IAG) to Fort Lauderdale (FLL) flights
- Air Canada Toronto (YYZ) to San Diego (SAN) flights
- Delta Buffalo (BUF) to Las Vegas (LAS) flights
- Seattle to Delhi (SEA - DEL)
