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 $259 round trip and CA $123 one way. Prices and availability subject to change. Additional terms may apply.

Sat., Sep. 6 - Sat., Sep. 13
ORD
Chicago
SEA
Seattle
CA $259 Roundtrip, found 2 days ago
CA $259
Roundtrip
found 2 days ago
Select Alaska Airlines flight, departing Sat., Sep. 6 from Chicago to Seattle, returning Sat., Sep. 13, priced at CA $259 found 2 days ago
Sat., Aug. 16 - Sat., Aug. 23
ORD
Chicago
SEA
Seattle
CA $263 Roundtrip, found 1 day ago
CA $263
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Sat., Aug. 16 from Chicago to Seattle, returning Sat., Aug. 23, priced at CA $263 found 1 day ago
Wed., Aug. 13 - Wed., Aug. 20
ORD
Chicago
SEA
Seattle
CA $264 Roundtrip, found 4 days ago
CA $264
Roundtrip
found 4 days ago
Select Alaska Airlines flight, departing Wed., Aug. 13 from Chicago to Seattle, returning Wed., Aug. 20, priced at CA $264 found 4 days ago
Thu., Jul. 31 - Wed., Aug. 6
ORD
Chicago
SEA
Seattle
CA $267 Roundtrip, found 5 days ago
CA $267
Roundtrip
found 5 days ago
Select Spirit Airlines flight, departing Thu., Jul. 31 from Chicago to Seattle, returning Wed., Aug. 6, priced at CA $267 found 5 days ago
Fri., Aug. 8 - Sun., Aug. 10
ORD
Chicago
SEA
Seattle
CA $269 Roundtrip, found 5 days ago
CA $269
Roundtrip
found 5 days ago
Select Spirit Airlines flight, departing Fri., Aug. 8 from Chicago to Seattle, returning Sun., Aug. 10, priced at CA $269 found 5 days ago
Sat., Sep. 6 - Sat., Sep. 13
ORD
Chicago
SEA
Seattle
CA $272 Roundtrip, found 2 days ago
CA $272
Roundtrip
found 2 days ago
Select Alaska Airlines flight, departing Sat., Sep. 6 from Chicago to Seattle, returning Sat., Sep. 13, priced at CA $272 found 2 days ago
Sat., Aug. 16 - Sat., Aug. 23
ORD
Chicago
SEA
Seattle
CA $276 Roundtrip, found 1 day ago
CA $276
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Sat., Aug. 16 from Chicago to Seattle, returning Sat., Aug. 23, priced at CA $276 found 1 day ago
Wed., Aug. 13 - Wed., Aug. 20
ORD
Chicago
SEA
Seattle
CA $277 Roundtrip, found 4 days ago
CA $277
Roundtrip
found 4 days ago
Select Alaska Airlines flight, departing Wed., Aug. 13 from Chicago to Seattle, returning Wed., Aug. 20, priced at CA $277 found 4 days ago
Sat., Sep. 6 - Sat., Sep. 13
ORD
Chicago
SEA
Seattle
CA $285 Roundtrip, found 2 days ago
CA $285
Roundtrip
found 2 days ago
Select Alaska Airlines flight, departing Sat., Sep. 6 from Chicago to Seattle, returning Sat., Sep. 13, priced at CA $285 found 2 days ago
Sat., Aug. 30 - Sat., Sep. 6
ORD
Chicago
SEA
Seattle
CA $286 Roundtrip, found 4 days ago
CA $286
Roundtrip
found 4 days ago
Select Alaska Airlines flight, departing Sat., Aug. 30 from Chicago to Seattle, returning Sat., Sep. 6, priced at CA $286 found 4 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.