SEA - CMI

$304 Find Cheap Flights from Seattle to Champaign

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from Seattle to Champaign departing on 10/24. 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
1 adult, Economy

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

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

Cheap Flights from Seattle to Champaign (SEA-CMI)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Seattle to Champaign 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.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Seattle to Champaign

Fri, Oct 24 - Tue, Oct 28
American Airlines Logo
12:34 am - 10:43 amSEA-CMI
8h 09m1 stop
American Airlines Logo
3:49 pm - 9:48 pmCMI-SEA
7h 59m1 stop
$304American Airlines
Find Deal
Fri, Oct 17 - Mon, Oct 20
American Airlines Logo
12:34 am - 10:43 amSEA-CMI
8h 09m1 stop
American Airlines Logo
7:01 pm - 12:27 amCMI-SEA
7h 26m1 stop
$326American Airlines
Find Deal
Thu, Oct 2 - Mon, Oct 6
American Airlines Logo
10:09 am - 8:51 pmSEA-CMI
8h 42m1 stop
American Airlines Logo
3:47 pm - 10:59 pmCMI-SEA
9h 12m1 stop
$330American Airlines
Find Deal
Thu, Jan 1 - Wed, Jan 7
American Airlines Logo
11:40 am - 9:30 pmSEA-CMI
7h 50m1 stop
American Airlines Logo
6:49 am - 2:49 pmCMI-SEA
10h 00m1 stop
$439American Airlines
Find Deal
Sat, Oct 25 - Tue, Oct 28
American Airlines Logo
6:30 am - 6:31 pmSEA-CMI
10h 01m2 stops
American Airlines Logo
4:26 pm - 9:23 pmCMI-SEA
6h 57m1 stop
$740American Airlines
Find Deal
Thu, Sep 25 - Sun, Sep 28
American Airlines Logo
1:02 pm - 9:51 pmSEA-CMI
6h 49m1 stop
American Airlines Logo
7:56 pm - 9:21 amCMI-SEA
15h 25m1 stop
$742American Airlines
Find Deal
Wed, Dec 31 - Wed, Jan 7
American Airlines Logo
12:14 am - 6:40 pmSEA-CMI
16h 26m1 stop
American Airlines Logo
6:19 am - 2:49 pmCMI-SEA
10h 30m2 stops
$747American Airlines
Find Deal
Fri, Oct 24 - Tue, Oct 28
American Airlines Logo
12:34 am - 6:31 pmSEA-CMI
15h 57m1 stop
American Airlines Logo
3:49 pm - 12:27 amCMI-SEA
10h 38m2 stops
$762American Airlines
Find Deal
Fri, Oct 17 - Mon, Oct 20
American Airlines Logo
12:34 am - 6:31 pmSEA-CMI
15h 57m1 stop
American Airlines Logo
11:13 am - 7:29 pmCMI-SEA
10h 16m2 stops
$790American Airlines
Find Deal
Tue, Mar 10 - Wed, Mar 11
American Airlines Logo
11:55 am - 8:32 pmSEA-CMI
6h 37m1 stop
American Airlines Logo
6:54 am - 12:31 pmCMI-SEA
7h 37m1 stop
$794American Airlines
Find Deal

Everything you should know

Cheapest round-trip
$304
American Airlines
Fri 10/24Tue 10/28
SEA - CMI • 1 stop
Cheapest one-way
Multiple Airlines
Tue 9/16
SEA - CMI • multi-stop
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Champaign!
Booking Insights

KAYAK's insights & trends for Seattle to Champaign flights

Get data-powered insights and trends into flights from Seattle to Champaign 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 Seattle to Champaign?

The average price of all round-trip flights from Seattle to Champaign clicked on KAYAK for each day over the last 12 months.

When flying from Seattle to Champaign, you should consider leaving on a Thursday and avoid Tuesdays if you are looking for the best rates. For your return to Seattle, you’ll find the best rates on Saturdays and the most expensive ones on Fridays.

Good to know

Cheapest flight$304
Most popular time to fly with an average 53% increase in price.
Flight from Seattle to Champaign

When to book flights from Seattle to Champaign

Are your dates flexible? Find out the best times to travel from Seattle to Champaign 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 Seattle to Champaign

  • What is the cheapest flight from Seattle to Champaign?

    In the last 3 days, the lowest price for a flight from Seattle to Champaign was $304 for a round-trip ticket.

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

    No, a passport isn't needed to fly from Seattle to Champaign. However, local authorities might ask for an official ID.

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

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

  • Which airline alliances offer flights from Seattle to Champaign?

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

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

    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 Seattle to Champaign.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Champaign from Seattle 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 Seattle to Champaign?

    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 Champaign with an airline and back to Seattle with another airline. Booking your flights between Seattle and CMI 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 Seattle to Champaign?

    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 Champaign from Seattle up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Seattle to Champaign

 
See real verified KAYAK customer reviews for airlines flying from Seattle to Champaign. 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 Seattle to Champaign? 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
8.0Crew
7.5Boarding
6.4Food
7.2Comfort
Airline reviews

Any flight to ORD after about 2pm this summer has been challenging. Flight was delayed getting in (coming from ORD) and that led to it not leaving before a ground stop due to lightening before they could fuel the plane, and so forth. They made up some time but we were still late in arriving at ORD, and that led to missed connections.

6.0 GoodMitchell, Aug 2025CMH - ORD
Read more American Airlines reviews

Any flight to ORD after about 2pm this summer has been challenging. Flight was delayed getting in (coming from ORD) and that led to it not leaving before a ground stop due to lightening before they could fuel the plane, and so forth. They made up some time but we were still late in arriving at ORD, and that led to missed connections.

Food was ok, but not as good as I have had before on AA.

Pretty good. The food was just mediocre, the boarding and crew were good.

My flight got switched and my prepaid bag didnt transfer over properly so I paid to check ANOTHER BAG. I was placed in a middle seat and it was just miserable. At least it was a bulkhead row so I had legroom. The flight just never seem3d to end

Was not able to watch most shows on the entertainment site. They would not load

On Wednesday, July 30 we were in mid flight from Manchester to Charlotte and we turned around because the right engine was malfunctioning. That was the last flight out of Manchester that night. I was rebooked for Thursday, which became a weather event Friday. There were no seats left on the flight from Manchester to Charlotte. Consequently I didn’t leave Manchester until Saturday morning and we flew to Chicago so to say the least my scheduled flight and return to Iowa was three days off and it messed with my business schedule. Consequently cash flow. I would like some sort of acknowledgment of this event.

Dreadful experience. Our flight was delayed more than 8 hours due to a maintenance issue and the assistance from rebooking was poor. I was travelling with a bad knee and needed assistance waited in one place more than 3 hours before someone came with a wheelchair. The woman next to me was a 91 year old great grandmother who had waited more than 4 hours. There were moments of support from the staff but it appeared as they were going against the direction of management. It was apathy, lack of ownership and dismissive responses with small moments of kindness and understanding typically from grey haired, female, veteran staff..

Couldn’t get the door on the plane to close leading to a nearly 2 hour delay. But, hey at least they didn’t cancel the flight.

The flight was fine and the crew awesome. The problem is ORD and AA. Computers went down, ORD fell apart and a 40 min flight turned into a 3 hour trip. Guess the answer is to not try and fly to ORD after noon. But, as I said, crew was awesome and did everything they could to lesson the flight time.

The flight was fine but the 8 hour delay in Chicago was awful - 5 gate changes and repeated delays without an explanation. No vouchers. Nothing.

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

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