Cheap Flights From O'Hare Intl. (ORD) To Seattle - Tacoma Intl. (SEA)

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Cheapest Flights from Chicago (ORD) to Seattle (SEA)

The cheapest flights to Seattle - Tacoma Intl. found within the past 7 days were CA $248 round trip and CA $124 one way. Prices and availability subject to change. Additional terms may apply.

Thu, Jan 22 - Wed, Jan 28
ORD
Chicago
SEA
Seattle
CA $248 Roundtrip, found 5 days ago
CA $248
Roundtrip
found 5 days ago
Select Alaska Airlines flight, departing Thu, Jan 22 from Chicago to Seattle, returning Wed, Jan 28, priced at CA $248 found 5 days ago
Thu, Jan 22 - Wed, Jan 28
ORD
Chicago
SEA
Seattle
CA $248 Roundtrip, found 5 days ago
CA $248
Roundtrip
found 5 days ago
Select Alaska Airlines flight, departing Thu, Jan 22 from Chicago to Seattle, returning Wed, Jan 28, priced at CA $248 found 5 days ago
Thu, Jan 22 - Wed, Jan 28
ORD
Chicago
SEA
Seattle
CA $261 Roundtrip, found 5 days ago
CA $261
Roundtrip
found 5 days ago
Select Alaska Airlines flight, departing Thu, Jan 22 from Chicago to Seattle, returning Wed, Jan 28, priced at CA $261 found 5 days ago
Thu, Jan 22 - Wed, Jan 28
ORD
Chicago
SEA
Seattle
CA $275 Roundtrip, found 5 days ago
CA $275
Roundtrip
found 5 days ago
Select Alaska Airlines flight, departing Thu, Jan 22 from Chicago to Seattle, returning Wed, Jan 28, priced at CA $275 found 5 days ago
Thu, Jan 22 - Wed, Jan 28
ORD
Chicago
SEA
Seattle
CA $289 Roundtrip, found 5 days ago
CA $289
Roundtrip
found 5 days ago
Select Alaska Airlines flight, departing Thu, Jan 22 from Chicago to Seattle, returning Wed, Jan 28, priced at CA $289 found 5 days ago
Thu, Dec 4 - Wed, Dec 10
ORD
Chicago
SEA
Seattle
CA $289 Roundtrip, found 4 days ago
CA $289
Roundtrip
found 4 days ago
Select Alaska Airlines flight, departing Thu, Dec 4 from Chicago to Seattle, returning Wed, Dec 10, priced at CA $289 found 4 days ago
Thu, Jan 22 - Wed, Jan 28
ORD
Chicago
SEA
Seattle
CA $303 Roundtrip, found 5 days ago
CA $303
Roundtrip
found 5 days ago
Select Alaska Airlines flight, departing Thu, Jan 22 from Chicago to Seattle, returning Wed, Jan 28, priced at CA $303 found 5 days ago
Sat, Dec 6 - Sat, Dec 13
ORD
Chicago
SEA
Seattle
CA $308 Roundtrip, found 3 days ago
CA $308
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Sat, Dec 6 from Chicago to Seattle, returning Sat, Dec 13, priced at CA $308 found 3 days ago
Thu, Dec 4 - Wed, Dec 10
ORD
Chicago
SEA
Seattle
CA $317 Roundtrip, found 4 days ago
CA $317
Roundtrip
found 4 days ago
Select Alaska Airlines flight, departing Thu, Dec 4 from Chicago to Seattle, returning Wed, Dec 10, priced at CA $317 found 4 days ago
Fri, Jan 9 - Fri, Jan 9
ORD
Chicago
SEA
Seattle
CA $318 Roundtrip, found 5 days ago
CA $318
Roundtrip
found 5 days ago
Select Alaska Airlines flight, departing Fri, Jan 9 from Chicago to Seattle, returning Fri, Jan 9, priced at CA $318 found 5 days ago

Frequently asked questions

Are there direct flights from O'Hare Airport to SEA?
If you'd love to venture from O'Hare Airport to Sea-Tac Airport as fast as possible, you'll be happy to know multiple airlines operate direct flights. Select your preferred seat with Alaska Airlines or United Airlines.
What airlines fly from O'Hare Airport to Sea-Tac Airport?
If you're eager to fly direct from O'Hare Airport to SEA, you won't have a problem finding a fare. Here are the best airlines that advertise nonstop services on this route:

  • Alaska Airlines - (AS) with 152 flights every month
  • United Airlines - (UA) with 152 flights every month
  • American Airlines - (AA) with 108 flights every month
  • Delta - (DL) with 78 flights every month

What is the best day to buy a plane ticket?
Airfares offered on Friday tend to be the cheapest, according to flight demand on Travelocity.ca in 2021. Purchasing your airfares on a Thursday or Saturday can also provide better value, however our advice if you're looking to save money is to avoid booking on a Wednesday or Sunday. Our data shows that those two days have the highest ticket values on average, so keep this in mind if you're browsing flight deals.
What are the cheapest days to fly?
Frequent travellers may already know this, but earlier in the week is often the cheapest time to fly. Flights departing on a Monday are the cheapest of the week. Since flights towards the middle of the week tend to be more popular, this causes the prices to rise. This is why, on average, airfares booked on Travelocity.ca in 2021 were most expensive for Wednesday departures.
How far in advance can you book a flight?
Here's the deal: It is typically possible to start comparing international airfares on Travelocity.ca up to 12 months in advance. However, it does depend on the carrier as not all airlines release their prices that far out. According to our 2021 flight demand trends, last minute planners can still bag a bargain with some of the cheapest fares appearing 2-4 weeks prior to their travel dates.*According to flight demand on Travelocity.ca from January to December 2021. Savings are subject to change and may vary depending on selections made.
*Price based on the lowest price found within past 24 hours and based upon one night stay for two adults over the next thirty days. Prices and availability subject to change. Additional terms may apply.