SEA - CMI

$268 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 2/25. 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, 0 bags

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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41.299.237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
$268
Typical prices: $363-$528
American Airlines
Wed 2/25Thu 3/5
SEA - CMI • 1 stop
Cheapest one-way
$394
American Airlines
Tue 2/10
SEA - CMI • 1 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!
Flight Deals
Booking Insights
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

Wed, Feb 25 - Thu, Mar 5
American Airlines Logo
12:07 am - 9:21 am
SEA
-
CMI
7h 14m
1 stop
American Airlines Logo
3:47 pm - 11:04 pm
CMI
-
SEA
9h 17m
1 stop
$268American Airlines
Thu, May 14 - Mon, May 18
American Airlines Logo
5:43 am - 2:31 pm
SEA
-
CMI
6h 48m
1 stop
American Airlines Logo
6:47 pm - 11:39 pm
CMI
-
SEA
6h 52m
1 stop
$481American Airlines
Fri, May 15 - Mon, May 18
American Airlines Logo
11:41 am - 8:57 pm
SEA
-
CMI
7h 16m
1 stop
American Airlines Logo
6:47 pm - 11:39 pm
CMI
-
SEA
6h 52m
1 stop
$527American Airlines
Thu, Jun 18 - Mon, Jun 22
American Airlines Logo
5:05 am - 2:16 pm
SEA
-
CMI
7h 11m
1 stop
American Airlines Logo
6:32 pm - 11:39 pm
CMI
-
SEA
7h 07m
1 stop
$600American Airlines
Sun, Feb 15 - Thu, Feb 19
American Airlines Logo
5:37 am - 2:24 pm
SEA
-
CMI
6h 47m
1 stop
American Airlines Logo
3:47 pm - 11:04 pm
CMI
-
SEA
9h 17m
1 stop
$858American Airlines
Fri, Feb 27 - Tue, Mar 3
American Airlines Logo
11:57 pm - 11:35 am
SEA
-
CMI
9h 38m
2 stops
American Airlines Logo
12:05 pm - 11:04 pm
CMI
-
SEA
12h 59m
1 stop
$876American Airlines
Thu, Jun 18 - Mon, Jun 22
American Airlines Logo
6:30 am - 6:02 pm
SEA
-
CMI
9h 32m
2 stops
American Airlines Logo
6:32 pm - 11:39 pm
CMI
-
SEA
7h 07m
1 stop
$900American Airlines
Sat, Feb 28 - Sun, Mar 1
American Airlines Logo
6:44 am - 8:54 pm
SEA
-
CMI
12h 10m
1 stop
American Airlines Logo
3:47 pm - 12:55 am
CMI
-
SEA
11h 08m
2 stops
$957American Airlines
Fri, May 15 - Mon, May 18
American Airlines Logo
11:26 pm - 1:48 pm
SEA
-
CMI
12h 22m
1 stop
American Airlines Logo
2:18 pm - 10:49 pm
CMI
-
SEA
10h 31m
2 stops
$996American Airlines
Thu, Feb 26 - Thu, Mar 5
American Airlines Logo
1:37 pm - 9:44 pm
SEA
-
CMI
6h 07m
1 stop
American Airlines Logo
3:47 pm - 12:55 am
CMI
-
SEA
11h 08m
2 stops
$1,011American Airlines
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.

How much is a round-trip flight from Seattle to Champaign?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Seattle to Champaign departing in February.
Find deals

Good to know

Cheapest flight$268
Most popular time to fly with an average 6% 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 $394 for a one-way ticket and $268 for a round-trip.

  • 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 11213 reviews
7.2Comfort
6.9Entertainment
6.4Food
7.5Boarding
8.0Crew
Airline reviews

Update to handle the delay was very bad, crews no smiles or welcome or thanks. Don’t care attitude

2.0 MediocreManikandan, Jan 2026
DFW - ORD
Read more American Airlines reviews

Update to handle the delay was very bad, crews no smiles or welcome or thanks. Don’t care attitude

Pilot navigated severe weather/snow storm with skill. Described his intentions clearly

Little warm on the plane and delayed for an hour

So excited very proud first of all I wanna thank kayak all updates very professional and fast alart And amazing cabin crew so nice to me they deserve big salute

The boarding process needs to be fixed. The zone don't work, especially when there is hardly anyone in zones 3, 4,and 5, leaving the majority of the passengers backed up in the aisle, especially because passengers seated near the front are blocking passengers who are seated in the rear of the plane. It would also help if the size of carry on bags was more strictly enforced.

Great flight - friendly and attentive team! Seats in coach were comfy, but a little cramped - but that is the case with all airlines ;)

Awful. They won’t help me with anything. I booked on American but they abdicated to Iberia. The ticket was overpriced. Everything negative

I enjoyed the extra leg room compared to other airlines. The first stewards made my daughter’s birthday special by giving her an extra snack. Then the last one coming home from Chicago to Appleton made our night really enjoyable Thanks for making our trip enjoyable

It was good..clean, comfy seat. Friendly warm welcoming crew. Was able to check my cabin luggage at the gate which I was able to pickup in a decent time from baggage claim. The app gave all updates from delays to baggage claim info. Overall smooth flight.

It was a typical flight. We had a delay which seems to be the normality now. And we had no in flight service due to conditions.

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

Information on your arrival and departure airports

Seattle (SEA)
Champaign (CMI)