CMI - SEA

$374 Find Cheap Flights from Champaign to Seattle

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from Champaign to Seattle departing on 5/22. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult

KAYAK searches hundreds of travel sites at once for deals on flights to Seattle

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Champaign to Seattle, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Champaign to Seattle, as well as popular online travel agencies
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Cheap Flight Deals from Champaign to Seattle (CMI-SEA)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Champaign to Seattle that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.

Recent round-trip flight deals from Champaign to Seattle

KAYAK's recommended round-trip deals from the most popular airlines that fly from Champaign to Seattle.
Discover the best prices for you by selecting your travel dates on KAYAK.
Choose your dates
American Airlines Logo
4:30 pm - 11:09 pmCMI-SEA
8h 39m1 stop
American Airlines Logo
11:59 pm - 10:44 amSEA-CMI
8h 45m1 stop
$374American Airlines
Find Deal
Thu, May 22 - Sun, Jun 1
American Airlines Logo
2:57 pm - 10:57 pmCMI-SEA
10h 00m1 stop
American Airlines Logo
11:59 pm - 10:44 amSEA-CMI
8h 45m1 stop
$447American Airlines
Find Deal
Wed, May 28 - Mon, Jun 2
American Airlines Logo
2:39 pm - 8:03 pmCMI-SEA
7h 24m1 stop
American Airlines Logo
5:32 am - 2:58 pmSEA-CMI
7h 26m1 stop
$501American Airlines
Find Deal
Thu, Jun 26 - Mon, Jun 30
American Airlines Logo
2:57 pm - 10:57 pmCMI-SEA
10h 00m1 stop
American Airlines Logo
11:59 pm - 10:44 amSEA-CMI
8h 45m1 stop
$537American Airlines
Find Deal
Wed, May 28 - Sun, Jun 1
American Airlines Logo
2:57 pm - 6:31 pmCMI-SEA
29h 34m2 stops
American Airlines Logo
11:59 pm - 10:44 amSEA-CMI
8h 45m1 stop
$583American Airlines
Find Deal
Wed, May 28 - Mon, Jun 2
American Airlines Logo
3:28 pm - 12:44 amCMI-SEA
11h 16m1 stop
American Airlines Logo
1:22 am - 2:58 pmSEA-CMI
11h 36m1 stop
$719American Airlines
Find Deal
Thu, Jun 26 - Sun, Jun 29
American Airlines Logo
2:39 pm - 10:56 pmCMI-SEA
10h 17m2 stops
American Airlines Logo
6:24 am - 2:09 pmSEA-CMI
5h 45m1 stop
$912American Airlines
Find Deal
Thu, Jun 26 - Mon, Jun 30
American Airlines Logo
2:39 pm - 10:56 pmCMI-SEA
10h 17m2 stops
American Airlines Logo
1:22 am - 2:58 pmSEA-CMI
11h 36m1 stop
$954American Airlines
Find Deal
Thu, Jun 26 - Sun, Jun 29
American Airlines Logo
4:30 pm - 12:45 amCMI-SEA
10h 15m2 stops
American Airlines Logo
6:20 am - 3:55 pmSEA-CMI
7h 35m1 stop
$1,005American Airlines
Find Deal
Thu, May 22 - Sun, Jun 1
American Airlines Logo
4:30 pm - 12:45 amCMI-SEA
10h 15m2 stops
American Airlines Logo
11:59 pm - 10:44 amSEA-CMI
8h 45m2 stops
$2,231American Airlines
Find Deal
Wed, May 28 - Mon, Jun 2

KAYAK's insights & trends for Champaign to Seattle flights

Get data-powered insights and trends into flights from Champaign to Seattle to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Champaign to Seattle?

The average price of all round-trip flights from Champaign to Seattle clicked on KAYAK for each day over the last 12 months.
Your flight ticket price will generally be cheaper if you fly to Seattle on a Saturday and more expensive on a Friday. On your return trip to Champaign, you should consider flying back on a Thursday, and avoid Tuesdays for better deals.

Good to know

Low season

November

High season

August

Cheapest flight

$374
Best time to beat the crowds with an average 25% drop in price.
Most popular time to fly and prices are also 8% lower on average.
Flight from Champaign to Seattle

When to book flights from Champaign to Seattle

Are your dates flexible? Find out the best times to travel from Champaign to Seattle based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Champaign to Seattle

  • What is the cheapest flight from Champaign to Seattle?

    In the last 3 days, the lowest price for a flight from Champaign to Seattle was $399 for a one-way ticket and $374 for a round-trip.

  • Do I need a passport to fly between Champaign and Seattle?

    A passport is not required to fly from Champaign to Seattle.

  • Which airports will I be using when flying from Champaign to Seattle?

    When flying out of Champaign you will be using Champaign University-Willard. You will be landing at Seattle, also known as Seattle/Tacoma Intl.

  • Which aircraft models fly most regularly from Champaign to Seattle?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Champaign to Seattle?

    oneworld is the only airline alliance operating flights between Champaign and Seattle.

  • How does KAYAK find such low prices on flights from Champaign to Seattle?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Champaign to Seattle.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Champaign to Seattle?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Seattle from Champaign is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Champaign to Seattle?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Seattle with an airline and back to Champaign with another airline. Booking your flights between Champaign and SEA can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Champaign to Seattle?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Seattle from Champaign up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top airline flying from Champaign to Seattle

 
See real verified KAYAK customer reviews for airlines flying from Champaign to Seattle. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Champaign to Seattle? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.2
American AirlinesOverall score based on 10000 reviews
6.9Entertainment
7.5Boarding
7.2Comfort
6.5Food
8.0Crew
Airline reviews

I have long legs, my foot was out in the aisle and when a flight attendant came walking by and I didn't notice, instead of saying "excuse me" or anything like that, she kicked my foot. Extremely rude

6.0 GoodAnonymous, Mar 2025ORD - CLT
Read more American Airlines reviews

I have long legs, my foot was out in the aisle and when a flight attendant came walking by and I didn't notice, instead of saying "excuse me" or anything like that, she kicked my foot. Extremely rude

Excellent! The gate agents were kind enough to rebook me on an earlier flight saving me from a 6 hour layover. Even my luggage made it despite the fact that the connection was technically too narrow. The flight itself was very comfortable, roomy, and clean. Plenty of space for my carryon items with plugs to charge my phone. After a long international flight of 14 hours, this was an excellent way to end my travels!

It was a code share with Alaska - would have been great if I actually made it on the plane, claimed I didn’t have a ticket or a seat even thought I was checked in.

Great experience. Flight boarded easily. Departed early. Smooth flight. Great arrival in DC--almost no taxing! Almost direct to gate from runway. Crew was terrific. Same cookies and beverages in main cabin. I did not use the entertainment system on this flight.

Most of the delay was due to weather which is not what was at issue here. One delay was due to a missing flashlight and in the end the flashlight was actually found on the plane. The entertainment system is very limited. Live TV options offer only a few channels that are not very appealing. Boarding and deplaning are always difficult. It just takes too much time to get on and off the plane. On the plus side, I missed my connecting flight, but was easily able to book a later flight from the app while enroute.

You were more on time than United. I'm so over united delays.

The meals were mediocre and the alcohol selection was poor. I enjoyed the selection of movies and other entertainment.

I chatted with the captain before the flight, and similarly during the welcome announcement, he warned of a turbulent flight that may impact the in-flight service. However, once at altitude, he announced that the weather changed and he immediately turned off the seatbelt sign. But it appeared the cabin crew had already decided to take off this flight. They remained seated and then just chatted in the galley. The flight was fully catered, but only first class received service.

My flight attendant was attentive! The elderly person next to me was flatulent and the flight attendant could see that I was in distress and brought me some face masks

My boarding pass wouldn't pull up in the app very easily and had to really dig through my email. That caused a delay in TSA..

Everything you need to know for your flight from Champaign to Seattle

Information on your arrival and departure airports

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