Cheap Flights from Champaign (CMI) to Seattle (LKE)

Popular airlines from Champaign, IL (CMI-University Of Illinois Urbana-Champaign Williard) to Seattle, WA (LKE-Lake Union Seaplane Base)

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Alternative airports near Seattle

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Seattle - Tacoma Intl. SEA. Cheapest option available. Average driving time to city center is 20 minutes. Flights from $398
SEA
Seattle - Tacoma Intl.
Cheapest
Average driving time to city center20 min
Flights from $398

Frequently asked questions

How much does a flight from University Of Illinois Urbana-Champaign Williard Airport (CMI) to Lake Union Seaplane Base Airport (LKE) cost?
Grab a cheap one-way flight or cheap return flight from University Of Illinois Urbana-Champaign Williard Airport (CMI) to Lake Union Seaplane Base Airport (LKE) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from University Of Illinois Urbana-Champaign Williard Airport (CMI) to Lake Union Seaplane Base Airport (LKE)?
Planning your getaway for can help you save, as it's the cheapest month for flights between CMI and LKE. You'll often find the lowest prices during off-peak months.
What is the cheapest airline that flies from University Of Illinois Urbana-Champaign Williard Airport (CMI) to Lake Union Seaplane Base Airport (LKE)?
To find the cheapest airline flying from CMI to LKE, use Expedia's filter tool. Customize your search based on what matters most to you, such as preferred carriers and flight duration. You can then sort your results by "Price (lowest to highest)" to see the most affordable options first.
How many flights per day from University Of Illinois Urbana-Champaign Williard Airport (CMI) to Lake Union Seaplane Base Airport (LKE)?
There aren't any daily direct flights from University Of Illinois Urbana-Champaign Williard Airport (CMI) to Lake Union Seaplane Base Airport (LKE). But you can opt for flights with layovers. Filter your search results on Expedia to include one or two stops, and you'll be on your way in no time at all.
What day of the week has the most flights from CMI to LKE?
Typically you'll find the widest variety of flight choices on a Friday. Tuesdays are often the quietest.* But this can vary depending on the time of year, airline and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from University Of Illinois Urbana-Champaign Williard Airport (CMI) to Lake Union Seaplane Base Airport (LKE)?
To arrive at Lake Union Seaplane Base Airport (LKE) without delays, select a flight that leaves from University Of Illinois Urbana-Champaign Williard Airport (CMI) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this time.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from University Of Illinois Urbana-Champaign Williard Airport (CMI) to Lake Union Seaplane Base Airport (LKE) last-minute?
Last-minute fares from CMI to LKE are usually more expensive. To lock in the best rates, start looking for flights ahead of time. That being said, if you're flexible with your travel dates, it's possible to find a cheap fare right before you leave.
Is it cheaper to book a CMI to LKE flight and hotel package?
Opting for a CMI to LKE flight and hotel package tends to be cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your travels in one place. Select from our impressive range of accommodations and then add car rentals, activities and flights to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from University Of Illinois Urbana-Champaign Williard Airport (CMI) to Lake Union Seaplane Base Airport (LKE)?
Generally, it's possible to cancel or reschedule your CMI to LKE flight. However, if it's been more than 24 hours since booking, additional fees may apply. Refer to your airline's policies in your itinerary to see what changes are possible and whether any costs are involved. You'll also find more information on our Customer Service portal.

Travel information

Origin airport
University Of Illinois Urbana-Champaign Williard
Destination airport
Lake Union Seaplane Base
Distance
1761 mi

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Champaign to Seattle Flights

The cheapest times to fly from Champaign to Seattle

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Champaign to Seattle are during the month of . You can find some of the cheapest flights from Champaign to Seattle with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Champaign to Seattle

Sunday is one of the best days to book for cheap flights from Champaign to Seattle: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Champaign to Seattle

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Champaign to Seattle in 2025. You can also book with separate airlines for your outbound and return journeys, from one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Champaign to Seattle flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Champaign to Seattle airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Champaign to Seattle Flights

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