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Cheap flights from Champaign to Seattle from $356

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Champaign to Seattle departing on 9/18. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Champaign to Seattle (CMI-SEA)

Cheap round-trip flights

American Airlines Logo
11:17 am - 5:29 pmCMI-SEA
8h 12m1 stop
American Airlines Logo
5:26 am - 2:59 pmSEA-CMI
7h 33m1 stop
$356American Airlines
Find Deal
Thu, Sep 18 - Mon, Sep 22
American Airlines Logo
6:45 am - 2:48 pmCMI-SEA
10h 03m1 stop
American Airlines Logo
5:24 am - 2:41 pmSEA-CMI
7h 17m1 stop
$394American Airlines
Find Deal
Sat, Nov 15 - Tue, Nov 18
American Airlines Logo
11:17 am - 5:29 pmCMI-SEA
8h 12m1 stop
American Airlines Logo
5:26 am - 3:02 pmSEA-CMI
7h 36m1 stop
$411American Airlines
Find Deal
Wed, Sep 17 - Sun, Sep 21
American Airlines Logo
6:45 am - 8:14 pmCMI-SEA
15h 29m2 stops
American Airlines Logo
5:24 am - 2:41 pmSEA-CMI
7h 17m1 stop
$574American Airlines
Find Deal
Sat, Nov 15 - Tue, Nov 18
American Airlines Logo
6:45 am - 8:14 pmCMI-SEA
15h 29m2 stops
American Airlines Logo
5:24 am - 2:41 pmSEA-CMI
7h 17m1 stop
$587American Airlines
Find Deal
Sat, Nov 15 - Tue, Nov 18
American Airlines Logo
3:15 pm - 9:18 pmCMI-SEA
8h 03m1 stop
American Airlines Logo
12:55 am - 10:44 amSEA-CMI
7h 49m1 stop
$699American Airlines
Find Deal
Sat, Nov 22 - Fri, Nov 28
American Airlines Logo
1:50 pm - 11:18 pmCMI-SEA
11h 28m1 stop
American Airlines Logo
12:41 am - 4:00 pmSEA-CMI
13h 19m2 stops
$703American Airlines
Find Deal
Sat, Nov 15 - Mon, Nov 17
American Airlines Logo
6:00 am - 11:18 pmCMI-SEA
19h 18m1 stop
American Airlines Logo
12:41 am - 4:00 pmSEA-CMI
13h 19m2 stops
$709American Airlines
Find Deal
Sat, Nov 15 - Mon, Nov 17
American Airlines Logo
11:17 am - 7:09 pmCMI-SEA
9h 52m2 stops
American Airlines Logo
1:02 pm - 9:51 pmSEA-CMI
6h 49m1 stop
$732American Airlines
Find Deal
Thu, Sep 18 - Mon, Sep 22
American Airlines Logo
11:14 am - 11:18 pmCMI-SEA
14h 04m1 stop
American Airlines Logo
12:41 am - 4:00 pmSEA-CMI
13h 19m2 stops
$735American Airlines
Find Deal
Sat, Nov 15 - Mon, Nov 17

American Airlines flights from Champaign to Seattle

Our best American Airlines deals on Champaign to Seattle flight tickets
American Airlines
Sep 18
CMI11:17 amChampaign University-Willard
8h 12m
1 stop
SEA5:29 pmSeattle/Tacoma Intl
Sep 22
SEA5:26 amSeattle/Tacoma Intl
7h 33m
1 stop
CMI2:59 pmChampaign University-Willard
$356
Find similar
American Airlines
Nov 15
CMI6:45 amChampaign University-Willard
10h 03m
1 stop
SEA2:48 pmSeattle/Tacoma Intl
Nov 18
SEA5:24 amSeattle/Tacoma Intl
7h 17m
1 stop
CMI2:41 pmChampaign University-Willard
$394
Find similar
American Airlines
Sep 17
CMI11:17 amChampaign University-Willard
8h 12m
1 stop
SEA5:29 pmSeattle/Tacoma Intl
Sep 21
SEA5:26 amSeattle/Tacoma Intl
7h 36m
1 stop
CMI3:02 pmChampaign University-Willard
$411
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Champaign to Seattle that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated September 3, 2025.
Use the filters below to find and compare flights from Champaign to Seattle that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

ChampaignSeattle

CMI - SEA

CMISEA

Champaign University-Willard

Thu 9/18

11:17 am-5:29 pm

1 stop8h 12m

Seattle/Tacoma Intl

Mon 9/22

5:26 am-2:59 pm

1 stop7h 33m

$356

ChampaignSeattle

CMI - SEA

CMISEA

Champaign University-Willard

Sat 11/15

6:45 am-2:48 pm

1 stop10h 03m

Seattle/Tacoma Intl

Tue 11/18

5:24 am-2:41 pm

1 stop7h 17m

$394

ChampaignSeattle

CMI - SEA

CMISEA

Champaign University-Willard

Wed 9/17

11:17 am-5:29 pm

1 stop8h 12m

Seattle/Tacoma Intl

Sun 9/21

5:26 am-3:02 pm

1 stop7h 36m

$411

ChampaignSeattle

CMI - SEA

CMISEA

Champaign University-Willard

Sat 11/15

6:45 am-8:14 pm

2 stops15h 29m

Seattle/Tacoma Intl

Tue 11/18

5:24 am-2:41 pm

1 stop7h 17m

$574

ChampaignSeattle

CMI - SEA

CMISEA

Champaign University-Willard

Sat 11/15

6:45 am-8:14 pm

2 stops15h 29m

Seattle/Tacoma Intl

Tue 11/18

5:24 am-2:41 pm

1 stop7h 17m

$587

ChampaignSeattle

CMI - SEA

CMISEA

Champaign University-Willard

Sat 11/22

3:15 pm-9:18 pm

1 stop8h 03m

Seattle/Tacoma Intl

Fri 11/28

12:55 am-10:44 am

1 stop7h 49m

$699

ChampaignSeattle

CMI - SEA

CMISEA

Champaign University-Willard

Sat 11/15

1:50 pm-11:18 pm

1 stop11h 28m

Seattle/Tacoma Intl

Mon 11/17

12:41 am-4:00 pm

2 stops13h 19m

$703

ChampaignSeattle

CMI - SEA

CMISEA

Champaign University-Willard

Sat 11/15

6:00 am-11:18 pm

1 stop19h 18m

Seattle/Tacoma Intl

Mon 11/17

12:41 am-4:00 pm

2 stops13h 19m

$709

ChampaignSeattle

CMI - SEA

CMISEA

Champaign University-Willard

Thu 9/18

11:17 am-7:09 pm

2 stops9h 52m

Seattle/Tacoma Intl

Mon 9/22

1:02 pm-9:51 pm

1 stop6h 49m

$732

ChampaignSeattle

CMI - SEA

CMISEA

Champaign University-Willard

Sat 11/15

11:14 am-11:18 pm

1 stop14h 04m

Seattle/Tacoma Intl

Mon 11/17

12:41 am-4:00 pm

2 stops13h 19m

$735

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 12 resultsSorted by cheapest first
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See travel insights to Seattle from

How to get the cheapest flight ticket from Champaign to Seattle

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Seattle?

In general, November is the cheapest month to fly from Champaign to Seattle. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $321. If you don’t want to visit Seattle in November, then you should wait until October to fly from Champaign, when ticket prices are also cheap, with an average price of $337.

What is the cheapest day to depart on your flight to Seattle?

On average, the least expensive day to fly to Seattle from Champaign is on a Saturday. momondo users have found tickets for Saturday departures for as low as $371. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Friday is the most expensive day to depart from Champaign because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $658.

What is the cheapest time of day to depart on your flight to Seattle?

Flying to Seattle from Champaign at noon is the least expensive time of day to depart. momondo users have found prices as low as $397 when looking at flights departing at noon. Flights to Seattle are more costly in the morning, with an average ticket price of $529. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

When to book flights from Champaign to Seattle

Are you open to changing your travel dates? Check out the ideal times to fly from Champaign to Seattle according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Champaign to Seattle (CMI to SEA) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Champaign to Seattle

Direct flights

None
There are no direct flights from Champaign to Seattle. There are no popular flight routes from Champaign to Seattle.
Search flight deals

  • How far is Champaign University-Willard to Seattle/Tacoma Intl by plane?

    A flight from Champaign University-Willard to Seattle/Tacoma Intl will travel around 1755.7 mi. Flights usually cover this in 8h 03m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from Champaign University-Willard Airport to Seattle/Tacoma Intl Airport?

    Prices for flights from Champaign University-Willard Airport to Seattle/Tacoma Intl Airport were last updated today.

  • How many operators does momondo search for flights from Champaign University-Willard Airport to Seattle/Tacoma Intl Airport?

  • How old do you have to be to fly from Champaign University-Willard Airport to Seattle/Tacoma Intl Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Champaign University-Willard Airport to Seattle/Tacoma Intl Airport.

  • What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?

    The required travel and health documents for your Seattle/Tacoma Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Seattle/Tacoma Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular airline from Champaign to Seattle?

Best airlines flying from Champaign to Seattle

Compare and see reviews for airlines that fly from Champaign to Seattle with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $284Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights

Traveling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Leavenworth
Tacoma
SeaTac
Ocean Shores
Olympia
Renton
Lynnwood
Kent
Marysville
Puyallup
Federal Way
Cle Elum
Tukwila
Kirkland
Lakewood
Centralia
Shoreline
Fife
Redmond
Westport

Why use momondo?

Why should I use momondo to find a flight deal from Champaign to Seattle?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Champaign to Seattle. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Champaign to Seattle with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Champaign to Seattle flights to just show those with flexible booking policies.

How can momondo help me find flights from Champaign to Seattle?

momondo helps you find the best flight between Champaign and Seattle by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Champaign to Seattle right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Champaign to Seattle now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Seattle and let you know when they change.

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