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 $267 round trip and CA $125 one way. Prices and availability subject to change. Additional terms may apply.

Wed, Apr 22 - Sat, Apr 25
ORD
Chicago
SEA
Seattle
CA $267 Roundtrip, found 1 day ago
CA $267
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Wed, Apr 22 from Chicago to Seattle, returning Sat, Apr 25, priced at CA $267 found 1 day ago
Wed, Apr 29 - Wed, May 20
ORD
Chicago
SEA
Seattle
CA $268 Roundtrip, found 3 hours ago
CA $268
Roundtrip
found 3 hours ago
Select Alaska Airlines flight, departing Wed, Apr 29 from Chicago to Seattle, returning Wed, May 20, priced at CA $268 found 3 hours ago
Sat, Apr 25 - Sat, May 2
ORD
Chicago
SEA
Seattle
CA $269 Roundtrip, found 2 days ago
CA $269
Roundtrip
found 2 days ago
Select Alaska Airlines flight, departing Sat, Apr 25 from Chicago to Seattle, returning Sat, May 2, priced at CA $269 found 2 days ago
Sat, Feb 28 - Sat, Mar 7
ORD
Chicago
SEA
Seattle
CA $277 Roundtrip, found 5 hours ago
CA $277
Roundtrip
found 5 hours ago
Select Alaska Airlines flight, departing Sat, Feb 28 from Chicago to Seattle, returning Sat, Mar 7, priced at CA $277 found 5 hours ago
Wed, Apr 22 - Sat, Apr 25
ORD
Chicago
SEA
Seattle
CA $280 Roundtrip, found 1 day ago
CA $280
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Wed, Apr 22 from Chicago to Seattle, returning Sat, Apr 25, priced at CA $280 found 1 day ago
Wed, Apr 29 - Wed, May 20
ORD
Chicago
SEA
Seattle
CA $281 Roundtrip, found 3 hours ago
CA $281
Roundtrip
found 3 hours ago
Select Alaska Airlines flight, departing Wed, Apr 29 from Chicago to Seattle, returning Wed, May 20, priced at CA $281 found 3 hours ago
Thu, Apr 23 - Wed, Apr 29
ORD
Chicago
SEA
Seattle
CA $282 Roundtrip, found 2 hours ago
CA $282
Roundtrip
found 2 hours ago
Select Alaska Airlines flight, departing Thu, Apr 23 from Chicago to Seattle, returning Wed, Apr 29, priced at CA $282 found 2 hours ago
Thu, Apr 23 - Wed, Apr 29
ORD
Chicago
SEA
Seattle
CA $283 Roundtrip, found 5 days ago
CA $283
Roundtrip
found 5 days ago
Select Alaska Airlines flight, departing Thu, Apr 23 from Chicago to Seattle, returning Wed, Apr 29, priced at CA $283 found 5 days ago
Fri, Feb 27 - Tue, Mar 3
ORD
Chicago
SEA
Seattle
CA $289 Roundtrip, found 8 hours ago
CA $289
Roundtrip
found 8 hours ago
Select Alaska Airlines flight, departing Fri, Feb 27 from Chicago to Seattle, returning Tue, Mar 3, priced at CA $289 found 8 hours ago
Tue, Apr 28 - Sun, May 10
ORD
Chicago
SEA
Seattle
CA $295 Roundtrip, found 3 hours ago
CA $295
Roundtrip
found 3 hours ago
Select Alaska Airlines flight, departing Tue, Apr 28 from Chicago to Seattle, returning Sun, May 10, priced at CA $295 found 3 hours 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.