Find cheap flights from Chicago to Seattle/Tacoma Airport

CHI - SEA

Find cheap flights from Chicago to Seattle/Tacoma Airport

Round-trip
Economy
Chicago (CHI)
Seattle/Tacoma Intl
Fri 8/7
Fri 8/14
Any month
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Good to know

Low season

February Best time to beat the crowds with an average 21% drop in price.

High season

December Most popular time to fly with an average 20% increase in price.

Average price of a round-trip

$223 (avg. price over the last 2 weeks)

Good deal for a round-trip

$209 or less

When to book flights from Chicago to Seattle/Tacoma Intl

Estimated round-trip price
Average price per month
Flight prices as travel date approaches
-1 day
-2 days

Top tips for finding a cheap flight

  • Looking for a cheap flight? 25% of our users found flights on this route for $131 or less.
  • The cheapest flight from Chicago to Seattle/Tacoma Airport was found 75 days before departure, on average.
  • Book at least 3 weeks before departure in order to get a below-average price.
  • High season is considered to be November, December and January. The cheapest month to fly is February.
  • Morning departure is around 2% cheaper than an evening flight, on average*.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

FAQs for booking Chicago to Seattle/Tacoma Airport flights

Which airlines have a flexible cancellation policy for flights from Chicago to Seattle/Tacoma Intl due to COVID-19?

Which airlines apply social distancing measures on flights from Chicago to Seattle/Tacoma Intl due to COVID-19?

How long does a flight from Chicago to Seattle/Tacoma Airport take?

How many flights are there between Chicago and Seattle/Tacoma Airport?

Which airlines provide the cheapest flights from Chicago to Seattle/Tacoma Airport?

Do I need a passport to fly between Chicago and Seattle/Tacoma Airport?

Which airlines fly most frequently between Chicago and Seattle/Tacoma Airport?

What’s the cheapest day of the week to fly Chicago to Seattle/Tacoma Airport?

How does KAYAK find such low prices on flights from Chicago to Seattle/Tacoma Airport?

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Chicago to Seattle/Tacoma Airport?

What is the Hacker Fare option on flights from Chicago to Seattle/Tacoma Airport?

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Chicago to Seattle/Tacoma Airport?

Top 4 airlines serving Chicago to Seattle/Tacoma Intl

Scores according to KAYAK customer reviews

8.0
Delta
Overall score based on 28,502 reviews
8.2
Boarding
7.8
Comfort
8.5
Crew
7.8
Entertainment
7.5
Food
Airline reviews
Read more about Delta

Book cheap flights from Chicago to Seattle/Tacoma Airport

Recent round-trip flight deals

9/16
Wed
nonstop
Spirit Airlines
4h 15m
ORD - SEA
9/21
Mon
nonstop
Spirit Airlines
3h 59m
SEA - ORD
7/26
Sun
1 stop
Multiple Airlines
16h 37m
ORD - SEA
7/31
Fri
1 stop
Multiple Airlines
7h 06m
SEA - ORD
10/7
Wed
nonstop
Major Airline
4h 24m
ORD - SEA
10/7
Wed
nonstop
Major Airline
3h 43m
SEA - ORD
9/4
Fri
nonstop
Delta
4h 28m
ORD - SEA
9/7
Mon
1 stop
Delta
7h 32m
SEA - ORD
9/23
Wed
nonstop
Spirit Airlines
4h 15m
ORD - SEA
9/25
Fri
nonstop
Spirit Airlines
3h 59m
SEA - ORD
8/5
Wed
1 stop
Multiple Airlines
13h 50m
ORD - SEA
8/10
Mon
1 stop
Multiple Airlines
8h 24m
SEA - ORD
9/15
Tue
nonstop
Spirit Airlines
4h 15m
ORD - SEA
9/21
Mon
nonstop
Spirit Airlines
3h 59m
SEA - ORD
8/19
Wed
1 stop
Multiple Airlines
13h 50m
ORD - SEA
8/24
Mon
1 stop
Multiple Airlines
8h 24m
SEA - ORD
8/20
Thu
1 stop
Multiple Airlines
25h 42m
ORD - SEA
8/24
Mon
1 stop
Multiple Airlines
8h 24m
SEA - ORD
8/3
Mon
1 stop
Spirit Airlines
10h 24m
ORD - SEA
8/6
Thu
1 stop
Spirit Airlines
7h 31m
SEA - ORD
8/8
Sat
1 stop
Delta
9h 09m
ORD - SEA
8/15
Sat
1 stop
Delta
6h 33m
SEA - ORD
9/16
Wed
nonstop
Spirit Airlines
4h 15m
ORD - SEA
9/23
Wed
1 stop
Spirit Airlines
7h 12m
SEA - ORD
9/5
Sat
1 stop
Multiple Airlines
18h 46m
ORD - SEA
9/6
Sun
1 stop
Multiple Airlines
8h 24m
SEA - ORD
9/16
Wed
nonstop
Spirit Airlines
4h 15m
ORD - SEA
9/20
Sun
nonstop
Spirit Airlines
3h 59m
SEA - ORD
7/30
Thu
2 stops
Multiple Airlines
31h 56m
ORD - SEA
8/3
Mon
1 stop
Multiple Airlines
8h 41m
SEA - ORD
8/13
Thu
1 stop
Delta
10h 37m
ORD - SEA
8/16
Sun
1 stop
Delta
8h 07m
SEA - ORD
9/23
Wed
nonstop
Spirit Airlines
4h 15m
ORD - SEA
9/26
Sat
1 stop
Spirit Airlines
7h 12m
SEA - ORD
9/15
Tue
1 stop
Delta
6h 00m
MDW - SEA
9/18
Fri
1 stop
Delta
6h 36m
SEA - MDW
Show more results

Recent one-way flight deals

9/12
Sat
nonstop
Spirit Airlines
4h 15m
ORD - SEA
7/25
Sat
1 stop
Multiple Airlines
22h 41m
ORD - SEA
8/12
Wed
nonstop
Delta
4h 28m
ORD - SEA
8/25
Tue
2 stops
Sun Country Air
9h 25m
ORD - SEA
8/6
Thu
1 stop
Allegiant Air
10h 09m
ORD - SEA
9/23
Wed
nonstop
Spirit Airlines
4h 15m
ORD - SEA
8/1
Sat
1 stop
Major Airline
7h 43m
ORD - SEA
7/26
Sun
1 stop
Multiple Airlines
16h 14m
ORD - SEA
8/2
Sun
1 stop
Multiple Airlines
18h 05m
ORD - SEA
8/3
Mon
2 stops
Spirit Airlines
13h 59m
ORD - SEA
7/30
Thu
2 stops
Spirit Airlines
28h 21m
ORD - SEA
9/26
Sat
1 stop
Delta
6h 00m
MDW - SEA
7/30
Thu
1 stop
Spirit Airlines
18h 18m
ORD - SEA
9/5
Sat
1 stop
Multiple Airlines
24h 46m
ORD - SEA
9/28
Mon
1 stop
Delta
7h 16m
MDW - SEA
7/30
Thu
2 stops
Spirit Airlines
28h 21m
ORD - SEA
8/1
Sat
2 stops
Multiple Airlines
47h 40m
ORD - SEA
7/30
Thu
1 stop
Spirit Airlines
24h 21m
ORD - SEA
8/15
Sat
1 stop
Multiple Airlines
24h 46m
ORD - SEA
7/23
Thu
2 stops
Spirit Airlines
31h 56m
ORD - SEA
Show more results
*
Prices are per person and are for e–tickets and include all taxes & fees in USD.

We attempt to get accurate prices, however, prices are not guaranteed.

Here's why:

We’re not the seller.
At KAYAK we don’t set the prices, so it’s not possible for us to guarantee what other companies are selling.

We compile tonnes of data for you
Our service lets you quickly and easily compare results from hundreds of travel sites at once. In this sense, KAYAK is a search engine and we can't guarantee prices we find.

Why aren’t prices accurate 100% of the time?
Prices on airline seats, hotel rooms and car rentals can change frequently. Several people may also be trying to buy the same travel option simultaneously. As a result, you may find, on occasion, that certain prices are no longer available.

If you have more questions or if you have a bad price to report to us,
please send us an and someone from our team will get back to you promptly.

^
The fares displayed include all taxes and fees for economy class travel and were found by the provider in the last 72 hours. Seats are limited and may not be available on all flights and days. Fares are subject to change and may not be available on all flights or dates of travel. Some carriers charge additional fees for extra checked bags. Please check the carriers' sites.
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