Price observed over the last 3 months for a round trip.
Compare all flight tickets and find cheap flights from Chicago to Seattle
Compare all flight tickets and find cheap flights from Chicago to Seattle
The cheapest flights right now
Chicago – Seattle
Outbound – Sep 6, 2026
direct
4h 49m Return – Sep 12, 2026
direct
4h 8m $358
3 days ago
Chicago – Seattle
Outbound – Sep 5, 2026
direct
4h 30m Return – Sep 11, 2026
direct
4h 4m $394
3 days ago
* Prices are in USD per passenger, including taxes, for a round trip. Prices are based on searches carried out within the last 72 hours. Please note that availability and ticket prices are subject to change and should not be considered as the final price quoted.
Cheapest flight tickets
$227
Average price of a round trip
$269
Average flight ticket price recorded over the last 3 months for a round trip.
Flight duration
4h34
A flight from Chicago to Seattle takes on average 4h34.
Best time
July
According to user searches, the ideal month to go to Seattle is July.
What is the cheapest month for this flight?
* The prices shown are an average per month of the prices found by Liligo users during the last 30 days.
Tips for finding a cheap flight from Chicago to Seattle
Check out our tips for booking your flight to Seattle (USA) from Chicago (USA) at the cheapest possible price.
Usually, the cheapest month to pick up a ticket on this route is January, with an average flight ticket price of $114 (calculation over the last two years). The most touristic season corresponds to the months of December, January and June.
For the cheapest flights, it is advisable to buy your ticket at least 30 days before the departure date.
The airline offering the cheapest flight tickets is Frontier Airlines. A ticket from the airline Frontier Airlines to Seattle costs on average $229.
The airlines that offer the most flights are Alaska Airlines, Hawaiian Airlines and Alaska Airlines.
Price of flight tickets from Chicago to Seattle
Here is some information and tips to know before booking your flight:
- Flight ticket prices range from $227 to $301
- The average price of a flight ticket is about $269
- Prices are lowest for stays in the month of January
- The month in which booking a ticket is cheaper is: May
info departure city :
Chicago, USA
airports :
Chicago-Merrill C. Meigs Field Airport (CGX)
Chicago FSS (CHI)
Chicago-Midway International Airport (MDW)
Chicago-O'Hare International Airport (ORD)
local time :
Chicago is a city in the country USA, the time zone is [[timezone]]. In Chicago, it is currently {fromLocalTime}, the temperature is on average 22°C, with a minimum of 19°C and a maximum of 25°C.
The city of Chicago (CHI) has 4 airport(s): Chicago-Merrill C. Meigs Field, Chicago FSS, Chicago-Midway and Chicago-O'Hare
destination info :
Seattle, USA
airports :
Kenmore Air Harbor Spb. (LKE)
Seattle-Tacoma International Airport (SEA)
Renton Municipal Airport (RNT)
King County International Airport (BFI)
local time :
Seattle is in the country USA, the time zone is [[timezone]]. In Seattle, it is currently {toLocalTime}, the temperature is on average 21°C, with a minimum of 14°C and a maximum of 30°C.
The city of Seattle (SEA) has 4 airport(s): Kenmore Air Harbor Spb., Seattle-Tacoma, Renton and King County
Useful info about Seattle
What is the least touristic period to go to Seattle?
If you want to visit Seattle during the least touristic period, choose the month of July.
What is the most popular time to travel to Seattle?
In Seattle, the most popular month is December. It is during this period that the prices offered by airlines are also the highest.
When should I book my flight from Chicago to Seattle?
According to our data, it is recommended to book your flight 30 days before your departure. If you book your flight ticket 5 weeks before your departure, you may find a price below average. The cheapest day to book a flight from Chicago to Seattle is Friday.
What are the arrival and destination airports when traveling between Chicago and Seattle?
When you leave, you can leave from Chicago-O'Hare, and you will arrive at Seattle-Tacoma.
How to reach Chicago airport from the city centre?
The airport Chicago-Merrill C. Meigs Field is located 4 km, Chicago FSS is located 29 km, Chicago-Midway is located 12 km or Chicago-O'Hare is located 29 km from the city centre. You can access it by using public transportation, taking a taxi, or renting a car.
Are there other means of transportation to go from Chicago to Seattle?
Airplane is the only means of transportation listed on Liligo for this journey.
Are there big differences in weather between Chicago and Seattle?
In summer, the average temperature is 18°C in Seattle and 22°C in Chicago. The average rainfall in summer is 37 mm in Seattle and 141 mm in Chicago. In summer, it is warmer in Chicago and it rains less in Seattle. In winter, it is colder in Seattle and it rains more in Seattle.