Cheap flights from Seattle to Chicago O'Hare Intl Airport
Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Chicago O'Hare Intl are usually found in September or January, booked 62 days in advance, depart on a Tuesday or Monday and return on a Tuesday
Cheap flight deals from Seattle to O'Hare Intl
Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to O'Hare Intl (ORD). 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 29 August 2025.
Popular in | December |
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Cheapest in | September |
Average price | £234 |
Best time to book a flight from Seattle to O'Hare Intl
Have a flexible travel schedule? Discover the best time to fly to O'Hare Intl from Seattle with our price prediction graph.
Cheapflights Insights
Everything you need to know about your flight from Seattle to Chicago O'Hare Intl Airport
How far ahead should I book a flight from Seattle to Chicago O'Hare Intl Airport?
The price you pay for your flight from Seattle to Chicago O'Hare Intl Airport may vary depending on when you book. For the best chance of a lower fare, look to book 62 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
What is the cheapest month to book a flight from Seattle to Chicago O'Hare Intl Airport?
Currently, January is the cheapest month in which you can book a flight from Seattle to Chicago O'Hare Intl Airport (average of £595). Flying from Seattle to Chicago O'Hare Intl Airport 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 ORD?
Unlike at midday, when flights are generally more expensive, you can save up to 29% on flights from Seattle to Chicago O'Hare Intl Airport by exploring options for tickets in the morning.
Related info for your journey
Find useful and relevant information for your journey from Seattle to O'Hare Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Travelling to a place near Chicago O'Hare Intl Airport?
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Can Cheapflights find flights from Seattle to O'Hare Intl with no change fees?
Users can book flights with no change fees policies with our dedicated filters. Book flights from Seattle to O'Hare Intl flexibly with Cheapflights today.
Can Cheapflights notify me if prices for flights from Seattle to O'Hare Intl become cheaper?
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