Cheap flights from Seattle to Chicago O'Hare Intl Airport
SEA — ORD
11 Jan — 18 Jan1
Return
1 adult
Economy
Return
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Chicago O'Hare Intl are usually found in January or February, booked 86 days in advance, depart on a Monday or Tuesday and return on a Wednesday
Find 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 12 December 2025.
Popular in
December
Cheapest in
January
Average price
£293
Highest demand for flights based on searches. 3% potential increase in price (£7 potential increase over avg. return price).
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.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Seattle to Chicago O'Hare Intl Airport
Prices
Airlines
How far ahead should I book a flight from Seattle to Chicago O'Hare Intl Airport?
Use this chart to determine the optimal time to book a return flight from Seattle to O'Hare Intl. Price data was last updated on 5 December 2025.
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 86 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, February is the cheapest month in which you can book a flight from Seattle to Chicago O'Hare Intl Airport (average of £87). Flying from Seattle to Chicago O'Hare Intl Airport in May is currently the most expensive (average of £126). 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?
Find hourly flight availability from Seattle to O'Hare Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 12 December 2025.
Unlike in the evening, when flights are generally more expensive, you can save up to 81% on flights from Seattle to Chicago O'Hare Intl Airport by exploring options for tickets in the afternoon.
Weekly flight availability from Seattle to Chicago O'Hare Intl Airport
Explore weekly flight availability from Seattle to O'Hare Intl. 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 12 December 2025.
The most flights from SEA to ORD are scheduled on a Friday (50 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (22 on average).
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.
What airport do you fly from for flights from Seattle to Chicago O'Hare Intl?
If you book a flight to Chicago O'Hare Intl from Seattle, you will be flying from Seattle/Tacoma Intl, which is the city’s only airport. Seattle/Tacoma Intl (SEA) is located 11.4 mi from the center of Seattle. There are 37 flights from Seattle/Tacoma Intl to Chicago O'Hare Intl per day from 0 different airlines.
What are the most reliable airlines from Seattle to Chicago O'Hare Intl Airport?
The top 3 most reliable airlines when flying from Seattle to Chicago O'Hare Intl Airport are WestJet (100%), Austrian Airlines (95%) and Royal Jordanian (92%).
Can I find deals for flights from Seattle to O'Hare Intl that include hotel bookings?
Yes. In addition to deals on Seattle to O'Hare Intl flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Seattle to O'Hare Intl?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to O'Hare Intl.
Can I find deals for business class flights from Seattle to O'Hare Intl?
Yes. Cheapflights offers flight deals from Seattle to O'Hare Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Seattle to Chicago O'Hare Intl Airport?
Currently, February is the cheapest month in which you can book a flight from Seattle to Chicago O'Hare Intl Airport (average of £87). Flying from Seattle to Chicago O'Hare Intl Airport in May is currently the most expensive (average of £126). 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.
Explore flights to O'Hare Intl departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 12 December 2025.
Browse through other flights departing from Seattle. Flights are based on user searches made on Cheapflights and were last updated on 12 December 2025.
Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.
How does Cheapflights help users find flights from Seattle to O'Hare Intl?
When you search for this flight from Seattle to O'Hare Intl, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.
Why should you use Cheapflights to find cheap flight tickets from Seattle to O'Hare Intl?
Cheapflights helps you find that perfect flight to O'Hare Intl from Seattle by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!
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?
Of course! You can now track prices for flights from Seattle to O'Hare Intl and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.
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