Cheap flights from Chicago to Seattle

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Easily compare round-trip flights from Chicago to Seattle

Below you can see the best fares for your round-trip flight route over the next three months. All fares were found on momondo this week. Browse the quickest and cheapest flights from Chicago to Seattle by changing tabs
Quickest
Cheapest
Spirit Airlines
Spirit Airlines
06 Nov
ORD
3:54 pm
Chicago O'Hare Intl airport
15h 25m
1 Stop
5:19 am
+1
SEA
Seattle/Tacoma Intl airport
Spirit Airlines
13 Nov
SEA
11:20 pm
Seattle/Tacoma Intl airport
14h 39m
1 Stop
3:59 pm
+1
ORD
Chicago O'Hare Intl airport
148 USD
Spirit Airlines
Spirit Airlines
06 Nov
ORD
3:54 pm
Chicago O'Hare Intl airport
15h 25m
1 Stop
5:19 am
+1
SEA
Seattle/Tacoma Intl airport
Spirit Airlines
13 Nov
SEA
11:20 pm
Seattle/Tacoma Intl airport
14h 39m
1 Stop
3:59 pm
+1
ORD
Chicago O'Hare Intl airport
148 USD
Spirit Airlines
Spirit Airlines
13 Nov
ORD
3:54 pm
Chicago O'Hare Intl airport
18h 31m
1 Stop
8:25 am
+1
SEA
Seattle/Tacoma Intl airport
Spirit Airlines
20 Nov
SEA
9:20 am
Seattle/Tacoma Intl airport
11h 02m
1 Stop
10:22 pm
ORD
Chicago O'Hare Intl airport
148 USD
Lufthansa
Lufthansa
22 Oct
ORD
11:00 am
Chicago O'Hare Intl airport
4h 34m
1:34 pm
SEA
Seattle/Tacoma Intl airport
Lufthansa
31 Oct
SEA
7:10 am
Seattle/Tacoma Intl airport
3h 51m
1:01 pm
ORD
Chicago O'Hare Intl airport
325 USD
Major Airline
Major Airline
28 Feb
ORD
2:00 am
Chicago O'Hare Intl airport
4h 30m
4:30 am
SEA
Seattle/Tacoma Intl airport
Major Airline
07 Mar
SEA
9:30 am
Seattle/Tacoma Intl airport
4h 00m
3:30 pm
ORD
Chicago O'Hare Intl airport
160 USD
Major Airline
Major Airline
28 Feb
ORD
2:00 am
Chicago O'Hare Intl airport
4h 30m
4:30 am
SEA
Seattle/Tacoma Intl airport
Major Airline
07 Mar
SEA
9:30 am
Seattle/Tacoma Intl airport
4h 00m
3:30 pm
ORD
Chicago O'Hare Intl airport
160 USD

How to get the cheapest flight ticket from Chicago to Seattle

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest month to fly to Seattle?
February
The cheapest time of year to fly to Seattle from Chicago is February. Most expensive is July
What is the cheapest day to fly to Seattle?
Tuesday
The cheapest day of the week is typically Tuesday. The most expensive is typically Sunday
When is the cheapest time to fly to Seattle?
in the afternoon
Chicago to Seattle flights are approximately 19% more expensive in the morning than in the afternoon
What is the cheapest airline that flies to Seattle?
Sun Country Air
Sun Country Air, Frontier, and Spirit Airlines are the most popular carriers operating from Chicago to Seattle
What is the cheapest route?
Chicago O'Hare Intl - Seattle/Tacoma Intl
Fly from Chicago O'Hare Intl to Seattle/Tacoma Intl for the best Chicago - Seattle flight prices
When is the cheapest time to book a flight to Seattle?
60 days before
The cheapest time to buy a flight from Chicago to Seattle is approximately 60 days to departure
60
Days before departure
0

Flight information for Chicago to Seattle (03A - CHI)

Find info about flight duration, direct flights, and airports for your flight from Chicago to Seattle
Fastest flight time 4h 31m The fastest flight from Chicago to Seattle takes 4h 31m.
Direct flights Every day Direct flights go from Chicago to Seattle every day.
Airports in Seattle 3 airports There are 3 airports near Seattle: Seattle King County/Boeing (BFI), Seattle Lake Union Spb (LKE), Seattle/Tacoma Intl (SEA)

Alternative routes for Chicago to Seattle

Compare alternative flights to and from nearby airports and cities to discover the best prices and most convenient flight times
Indianapolis to Seattle
Fastest flight time
4h 50m
Cheapest price
184 USD
Chicago to Portland
Fastest flight time
4h 20m
Cheapest price
196 USD
Indianapolis to Portland
Fastest flight time
7h 06m
Cheapest price
214 USD

Flights from Chicago to: