Cheap flights from Seattle to Chicago
Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Chicago are usually found in January or September, booked 26 days in advance, depart on a Monday or Tuesday and return on a Wednesday
Cheap flight deals from Seattle to Chicago
Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Chicago (CHI). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 28 March 2025.
Popular in | December |
|---|---|
Cheapest in | January |
Average price | £250 |
Good one-way deal | £153 or less |
Best time to book a flight from Seattle to Chicago
Have a flexible travel schedule? Discover the best time to fly to Chicago from Seattle with our price prediction graph.
Cheapflights Insights
Everything you need to know about your flight from Seattle to Chicago
How far ahead should I book a flight from Seattle to Chicago?
Use this chart to determine the optimal time to book a return flight from Seattle to Chicago. Price data was last updated on 21 March 2025.
The best time to book flights from Seattle to Chicago is 26 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
What is the cheapest month to book a flight from Seattle to Chicago?
Currently, January is the cheapest month in which you can book a flight from Seattle to Chicago (average of £595). Flying from Seattle to Chicago in July is currently the most expensive (average of £843). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from SEA to CHI?
Find hourly flight availability from Seattle to Chicago. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 28 March 2025.
When flying from Seattle to Chicago, the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 71% versus a flight at midday.
Weekly flight availability from Seattle to Chicago
Explore weekly flight availability from Seattle to Chicago. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 28 March 2025.
The most flights from SEA to CHI are scheduled on a Thursday (45 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (17 on average).
Rainfall in Chicago by month
Plan your trip to Chicago by taking into account the average rainfall totals by month.
In terms of precipitation, rainfall in Chicago ranges from 43.0 - 125.0 inches per month. August is typically the wettest month, when rainfall can reach 125.0 mm. January is typically the driest time to visit Chicago when rainfall is around 43.0 mm.
Temperature in Chicago by month
Plan your trip to Chicago by taking into account the average temperature totals by month.
If weather is an important factor for your trip to Chicago, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 23.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -5.0 C).
Related info for your journey
Find useful and relevant information for your journey from Seattle to Chicago. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Other flights to Chicago
Explore flights to Chicago departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 28 March 2025.
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Can Cheapflights find flights from Seattle to Chicago with no change fees?
Cheapflights does show flights with no change fees to all users. To see these options for flights from Seattle to Chicago, users can toggle the no change fees filter when performing a flight search.
Can Cheapflights notify me if prices for flights from Seattle to Chicago become cheaper?
Not ready to book yet? You can track prices for flights from Seattle to Chicago on Cheapflights with our Price Alert feature and get notified when better prices are available.