S$163 Cheap Flights from Chicago to Seattle

View S$163 flight on Sat, 2 May, 2026Opens in a new window

Popular airlines from Chicago to Seattle, WA (SEA-Seattle - Tacoma Intl.)

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Cheap Flights from Chicago to Seattle (CHI-SEA)

Prices were available within the past 7 days and start at S$163 for one-way flights and S$389 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Wed, 29 Apr - Sat, 2 May
ORD
Chicago
SEA
Seattle
S$389 Return, found 10 hours ago
S$389
Return
found 10 hours ago
Select Delta flight, departing Wed, 29 Apr from Chicago to Seattle, returning Sat, 2 May, priced at S$389 found 10 hours ago
Delta
Sat, 2 May - Mon, 4 May
ORD
Chicago
SEA
Seattle
S$393 Return, found 5 days ago
S$393
Return
found 5 days ago
Select Delta flight, departing Sat, 2 May from Chicago to Seattle, returning Mon, 4 May, priced at S$393 found 5 days ago
Delta
Wed, 29 Apr - Sat, 2 May
ORD
Chicago
SEA
Seattle
S$442 Return, found 10 hours ago
S$442
Return
found 10 hours ago
Select Delta flight, departing Wed, 29 Apr from Chicago to Seattle, returning Sat, 2 May, priced at S$442 found 10 hours ago
Delta
Sat, 2 May - Mon, 4 May
ORD
Chicago
SEA
Seattle
S$445 Return, found 5 days ago
S$445
Return
found 5 days ago
Select Delta flight, departing Sat, 2 May from Chicago to Seattle, returning Mon, 4 May, priced at S$445 found 5 days ago
Delta
Wed, 29 Apr - Sat, 2 May
ORD
Chicago
SEA
Seattle
S$446 Return, found 10 hours ago
S$446
Return
found 10 hours ago
Select Delta flight, departing Wed, 29 Apr from Chicago to Seattle, returning Sat, 2 May, priced at S$446 found 10 hours ago
American Airlines
Wed, 29 Apr - Sat, 2 May
ORD
Chicago
SEA
Seattle
S$448 Return, found 10 hours ago
S$448
Return
found 10 hours ago
Select American Airlines flight, departing Wed, 29 Apr from Chicago to Seattle, returning Sat, 2 May, priced at S$448 found 10 hours ago
Delta
Thu, 7 May - Mon, 11 May
ORD
Chicago
SEA
Seattle
S$453 Return, found 2 hours ago
S$453
Return
found 2 hours ago
Select Delta flight, departing Thu, 7 May from Chicago to Seattle, returning Mon, 11 May, priced at S$453 found 2 hours ago
United
Wed, 29 Apr - Sat, 2 May
ORD
Chicago
SEA
Seattle
S$454 Return, found 10 hours ago
S$454
Return
found 10 hours ago
Select United flight, departing Wed, 29 Apr from Chicago to Seattle, returning Sat, 2 May, priced at S$454 found 10 hours ago
American Airlines
Wed, 29 Apr - Sat, 2 May
ORD
Chicago
SEA
Seattle
S$460 Return, found 10 hours ago
S$460
Return
found 10 hours ago
Select American Airlines flight, departing Wed, 29 Apr from Chicago to Seattle, returning Sat, 2 May, priced at S$460 found 10 hours ago
Delta
Sat, 2 May - Mon, 4 May
ORD
Chicago
SEA
Seattle
S$464 Return, found 5 days ago
S$464
Return
found 5 days ago
Select Delta flight, departing Sat, 2 May from Chicago to Seattle, returning Mon, 4 May, priced at S$464 found 5 days ago

Frequently asked questions

How much is a flight from Chicago, IL (CHI-All Airports) to SEA?
If you're travelling between Chicago, IL (CHI-All Airports) and Seattle - Tacoma Intl. Airport (SEA), round-trip flights start from S$389. This price is based on fares available within the last 7 days on Expedia for flights departing within the next year, so don't hang around. Book today and save yourself both money and time. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from Chicago, IL (CHI-All Airports) to Sea-Tac Airport?
We understand that things crop up unexpectedly, so we've made it as simple as possible for you to cancel your trip online. Just head to the Customer Service Portal and follow the instructions.
How do I find cheap flights from Chicago, IL (CHI-All Airports) to Seattle - Tacoma Intl. Airport (SEA) that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for Chicago, IL (CHI-All Airports) to Seattle - Tacoma Intl. Airport (SEA) flights, you'll see a "no change fees" filter for you to select.
How far is the flight from Chicago, IL (CHI-All Airports) to Seattle - Tacoma Intl. Airport (SEA)?
Expect to be up above the clouds for a while, as the flight distance between Chicago, IL (CHI-All Airports) and Sea-Tac Airport is 2,700 kilometres. Set up a playlist of your favourite tunes before leaving home to stay entertained during the trip.
Which airlines fly direct from Chicago, IL (CHI-All Airports) to Seattle - Tacoma Intl. Airport (SEA)?
Take a look at the deals on offer with these sought-after carriers and book your ticket from Chicago, IL (CHI-All Airports) to Sea-Tac Airport today:

  • Alaska Airlines - (AS) with 134 monthly flights
  • United Airlines - (UA) with 117 monthly flights
  • Delta Air Lines - (DL) with 69 monthly flights
  • American Airlines - (AA) with 60 monthly flights

Are Chicago, IL (CHI-All Airports) to Sea-Tac Airport flight tickets cheaper when they're purchased at the last minute?
Booking last minute from Chicago, IL (CHI-All Airports) to Sea-Tac Airport can be hit-or-miss. It is possible to find a bargain, but then again, you could miss out altogether! If you'd prefer to start your trip planning early, Expedia compares flight deals up to 12 months in advance. Just remember that not all airlines advertise their prices so far in advance. Our top tip? Check back often as prices are updated frequently.

Travel information

Origin airport
O'Hare Intl.
Destination airport
Seattle - Tacoma Intl.
Airlines serving
American Airlines, Delta, United
Return price
S$389
Distance
2745 km

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