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 $244 round trip and CA $123 one way. Prices and availability subject to change. Additional terms may apply.

Fri, Jan 9 - Wed, Jan 21
ORD
Chicago
SEA
Seattle
CA $244 Roundtrip, found 1 day ago
CA $244
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Fri, Jan 9 from Chicago to Seattle, returning Wed, Jan 21, priced at CA $244 found 1 day ago
Thu, Jan 8 - Wed, Jan 14
ORD
Chicago
SEA
Seattle
CA $247 Roundtrip, found 2 days ago
CA $247
Roundtrip
found 2 days ago
Select Alaska Airlines flight, departing Thu, Jan 8 from Chicago to Seattle, returning Wed, Jan 14, priced at CA $247 found 2 days ago
Fri, Jan 9 - Wed, Jan 21
ORD
Chicago
SEA
Seattle
CA $250 Roundtrip, found 1 day ago
CA $250
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Fri, Jan 9 from Chicago to Seattle, returning Wed, Jan 21, priced at CA $250 found 1 day ago
Thu, Jan 8 - Wed, Jan 14
ORD
Chicago
SEA
Seattle
CA $298 Roundtrip, found 2 days ago
CA $298
Roundtrip
found 2 days ago
Select Alaska Airlines flight, departing Thu, Jan 8 from Chicago to Seattle, returning Wed, Jan 14, priced at CA $298 found 2 days ago
Sun, Mar 8 - Tue, Mar 10
ORD
Chicago
SEA
Seattle
CA $299 Roundtrip, found 9 hours ago
CA $299
Roundtrip
found 9 hours ago
Select Alaska Airlines flight, departing Sun, Mar 8 from Chicago to Seattle, returning Tue, Mar 10, priced at CA $299 found 9 hours ago
Fri, Jan 9 - Sun, Jan 11
ORD
Chicago
SEA
Seattle
CA $307 Roundtrip, found 3 days ago
CA $307
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Fri, Jan 9 from Chicago to Seattle, returning Sun, Jan 11, priced at CA $307 found 3 days ago
Wed, Jan 7 - Fri, Jan 16
ORD
Chicago
SEA
Seattle
CA $309 Roundtrip, found 6 days ago
CA $309
Roundtrip
found 6 days ago
Select Alaska Airlines flight, departing Wed, Jan 7 from Chicago to Seattle, returning Fri, Jan 16, priced at CA $309 found 6 days ago
Thu, Jan 8 - Wed, Jan 14
ORD
Chicago
SEA
Seattle
CA $330 Roundtrip, found 2 days ago
CA $330
Roundtrip
found 2 days ago
Select Alaska Airlines flight, departing Thu, Jan 8 from Chicago to Seattle, returning Wed, Jan 14, priced at CA $330 found 2 days ago
Thu, Jan 8 - Wed, Jan 14
ORD
Chicago
SEA
Seattle
CA $335 Roundtrip, found 2 days ago
CA $335
Roundtrip
found 2 days ago
Select Alaska Airlines flight, departing Thu, Jan 8 from Chicago to Seattle, returning Wed, Jan 14, priced at CA $335 found 2 days ago
Fri, Jan 9 - Sun, Jan 11
ORD
Chicago
SEA
Seattle
CA $335 Roundtrip, found 3 days ago
CA $335
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Fri, Jan 9 from Chicago to Seattle, returning Sun, Jan 11, priced at CA $335 found 3 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.

Popular Flight Routes from Chicago (ORD)

Travelers at ORD love to visit these top cities. Roam to the top destinations from Chicago (ORD) today with the cheap prices from Travelocity!

Popular Flight Routes from Seattle (SEA)

Travelers at SEA love to visit these top cities. Roam to the top destinations from Seattle(SEA) today with the cheap prices from Travelocity!

*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.