CMI - SEA

$164 Find Cheap Flights from Champaign to Seattle

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Champaign to Seattle departing on 7/27. 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 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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Everything you should know

Cheapest round-trip
$317
Typical prices: $529-$402
American Airlines
Fri 5/29Sat 6/6
CMI - SEA • 1 stop
Cheapest one-way
$164
American Airlines
Mon 7/27
CMI - SEA • 1 stop
Top airlines
American Airlines
Cheapest • from $317 (round-trip)
American Airlines
Best reviews • 7.1 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Champaign and Seattle. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Chicago (ORD)
Cheapest • Avg $489 (round-trip)
Chicago (ORD)
Shortest trip • 7h 54m (one-way)
Insights
Insights
Insights
Insights
When to travel
February
Cheapest • 100% price drop
May
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Seattle!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights 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.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Champaign to Seattle

Fri, May 29 - Sat, Jun 6
American Airlines Logo
6:39 pm - 12:16 am
CMI
-
SEA
7h 37m
1 stop
American Airlines Logo
5:10 am - 2:15 pm
SEA
-
CMI
7h 05m
1 stop
$317American Airlines
Fri, May 29 - Sat, Jun 6
American Airlines Logo
6:39 pm - 12:16 am
CMI
-
SEA
7h 37m
1 stop
American Airlines Logo
5:10 am - 2:15 pm
SEA
-
CMI
7h 05m
1 stop
$353American Airlines
Sat, Jul 25 - Wed, Jul 29
American Airlines Logo
6:34 pm - 12:52 am
CMI
-
SEA
8h 18m
1 stop
American Airlines Logo
11:56 pm - 11:07 am
SEA
-
CMI
9h 11m
1 stop
$364American Airlines
Fri, Jul 10 - Wed, Jul 22
United Airlines Logo
7:34 pm - 12:14 am
CMI
-
SEA
6h 40m
1 stop
United Airlines Logo
5:20 pm - 8:54 am
SEA
-
CMI
13h 34m
2 stops
$372United Airlines
Fri, Jul 10 - Wed, Jul 22
American Airlines Logo
6:28 pm - 12:52 am
CMI
-
SEA
8h 24m
1 stop
American Airlines Logo
11:56 pm - 11:07 am
SEA
-
CMI
9h 11m
1 stop
$404American Airlines
Sat, Jul 25 - Thu, Jul 30
United Airlines Logo
7:34 pm - 12:14 am
CMI
-
SEA
6h 40m
1 stop
United Airlines Logo
10:40 pm - 8:54 am
SEA
-
CMI
8h 14m
1 stop
$406United Airlines
Thu, May 28 - Thu, Jun 4
American Airlines Logo
6:39 pm - 12:16 am
CMI
-
SEA
7h 37m
1 stop
American Airlines Logo
5:10 am - 2:15 pm
SEA
-
CMI
7h 05m
1 stop
$407American Airlines
Thu, May 14 - Mon, May 18
American Airlines Logo
6:55 pm - 12:36 am
CMI
-
SEA
7h 41m
1 stop
American Airlines Logo
1:19 pm - 9:35 pm
SEA
-
CMI
6h 16m
1 stop
$408American Airlines
Tue, Oct 20 - Sat, Oct 24
United Airlines Logo
6:30 am - 6:21 pm
CMI
-
SEA
13h 51m
2 stops
United Airlines Logo
7:00 am - 5:28 pm
SEA
-
CMI
8h 28m
1 stop
$412United Airlines
Fri, Jul 10 - Wed, Jul 22
United Airlines Logo
9:49 am - 9:59 pm
CMI
-
SEA
14h 10m
2 stops
United Airlines Logo
5:04 pm - 8:54 am
SEA
-
CMI
13h 50m
2 stops
$417United Airlines
Booking Insights

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.

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

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

What is the cheapest month to fly from Champaign to Seattle?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Champaign to Seattle, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Champaign to Seattle is February, where tickets cost $0 (return) on average. On the other hand, the most expensive months are November and March, where the average cost of round-trip tickets is $1,347 and $1,017 respectively.

Find deals

Good to know

Low seasonSeptember
Cheapest flight$164
Best time to beat the crowds with an average 43% drop in price.
Most popular time to fly and prices are also 21% 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 $164 for a one-way ticket and $317 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.

Reviews of the 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.
7.1
American AirlinesOverall score based on 11681 reviews
7.5Boarding
6.9Entertainment
6.4Food
7.2Comfort
7.9Crew
Airline reviews

The airplane was an old model, the overhead didn’t have enough room for people’s items and made boarding and boarding disappointing and stressful. Crew allowed passengers to bring more than the permitted baggage sizes.

2.0 MediocreStella, Apr 2026
ORD - DCA
Read more American Airlines reviews

The airplane was an old model, the overhead didn’t have enough room for people’s items and made boarding and boarding disappointing and stressful. Crew allowed passengers to bring more than the permitted baggage sizes.

Original flight was on time, then late, then changed gates...4 times. Once our newest plane came in, it was fine.

I almost missed my flight and they helped me out enormously

Delays experienced in boarding/take off due to incoming plane delayed. However, the boarding time/depart time in the app was significantly delayed in providing these updates. Usually not updated until an hour after we should have already boarded. Poorly managed.

Moved to earlier flight which unexpectedly had maintenance issues initially indicated as quick fix to ultimately plane changes. Moved back to original flight, also delayed. In all cases customer updates and communication very unclear, no updates on drivers for delays.

Plane was super cold. No entertainment unless you were with mileage program Getting off the plane was super slow

Typical AA - late by 90+ mn. Gate changed twice... Changed the departure time 6 times No explanation, no communication on reasons for delay I travel with AA twice a year... and it is consistently very poor.. I will continue to use AA only when i have to.

The gate got changed several times and the flight was delayed over an hour. Awful experience

American continues to decline in their customer service and its beyond disappointing.

It was an older plane. First Class was not especially roomy or comfortable. It was a short flight so there were no meal but they did offer mixed nuts which used to be normal but now is rare. Crew member was very polite and professional.

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

Information on your arrival and departure airports

Champaign (CMI)
Seattle (SEA)