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$274+ Cheap flights from Champaign to Seattle (CMI - SEA)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/3. Fares are subject to change and may not be available on all flights or dates of travel.
CMI — SEA
Aug 18 — Aug 251
Tue 8/18
Tue 8/25
1 adult, Economy
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Cheap flight deals from Champaign to Seattle

Cheapest flights from Champaign to Seattle
Explore the most affordable flight options available from Champaign to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 19, 2026.

This American Airlines deal was found by Cheapflights users on 7/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/214:54 pm
CMI
-
SEA
1 stop9h 05m
American Airlines
Fri 8/285:00 am
SEA
-
CMI
1 stop7h 15m
American Airlines
Deal found 7/15$338
This American Airlines deal was found by Cheapflights users on 7/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/124:54 pm
CMI
-
SEA
1 stop9h 05m
American Airlines
Mon 8/1711:56 pm
SEA
-
CMI
1 stop9h 15m
American Airlines
Deal found 7/15$433
This American Airlines deal was found by Cheapflights users on 7/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/16:34 pm
CMI
-
SEA
1 stop8h 18m
American Airlines
Wed 8/55:50 am
SEA
-
CMI
1 stop8h 34m
American Airlines
Deal found 7/17$444
This United Airlines deal was found by Cheapflights users on 7/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/258:00 am
CMI
-
SEA
1 stop9h 31m
United Airlines
Sun 11/2911:03 pm
SEA
-
CMI
1 stop21h 19m
United Airlines
Deal found 7/17$752
This American Airlines deal was found by Cheapflights users on 7/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/316:28 pm
CMI
-
SEA
1 stop8h 31m
American Airlines
Tue 8/410:22 am
SEA
-
CMI
1 stop8h 40m
American Airlines
Deal found 7/16$842

Find flight deals from Champaign to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from Champaign (CMI) to Seattle (SEA). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated July 19, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$338
(American Airlines)

One-way from

$274
(American Airlines)

Popular in

November

Cheapest in

October

Average price

$501
Provider with most accurate pricing for Champaign University-Willard-Seattle/Tacoma Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Champaign University-Willard-Seattle/Tacoma Intl flights.
Search Deals
From Champaign University-Willard to Seattle/Tacoma Intl
Search Deals
One-way flight from Champaign University-Willard to Seattle/Tacoma Intl
Search Deals
Highest demand for flights based on searches. 18% potential increase in price ($142 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 15% potential price decrease ($82 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
Search Deals

Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated July 19, 2026.
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

Cheapest round-trip
Quickest round-trip

ChampaignSeattle

CMI - SEA

CMISEA

Champaign University-Willard

Fri 8/21

4:54 pm-11:59 pm

1 stop9h 05m

Seattle/Tacoma Intl

Fri 8/28

5:00 am-2:15 pm

1 stop7h 15m

$338

ChampaignSeattle

CMI - SEA

CMISEA

Champaign University-Willard

Wed 8/12

4:54 pm-11:59 pm

1 stop9h 05m

Seattle/Tacoma Intl

Mon 8/17

11:56 pm-11:11 am

1 stop9h 15m

$433

ChampaignSeattle

CMI - SEA

CMISEA

Champaign University-Willard

Wed 11/25

8:00 am-3:31 pm

1 stop9h 31m

Seattle/Tacoma Intl

Sun 11/29

11:03 pm-10:22 pm

1 stop21h 19m

$752

ChampaignSeattle

CMI - SEA

CMISEA

Champaign University-Willard

Fri 7/31

6:28 pm-12:59 am

1 stop8h 31m

Seattle/Tacoma Intl

Tue 8/4

10:22 am-9:02 pm

1 stop8h 40m

$842

ChampaignSeattle

CMI - SEA

CMISEA

Champaign University-Willard

Sat 8/1

6:34 pm-12:52 am

1 stop8h 18m

Seattle/Tacoma Intl

Wed 8/5

11:16 pm-11:11 am

2 stops9h 55m

$921
Cheapest one-way
Quickest one-way

ChampaignSeattle

CMI - SEA

CMISEA

Champaign University-Willard

Thu 9/3

2:47 pm-10:21 pm

1 stop9h 34m

$274

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/18

Sorted by cheapest first

Compare providers for flights from Champaign to Seattle

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Champaign to Seattle in July.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Champaign-Seattle flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Champaign-Seattle flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Champaign-Seattle flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Champaign-Seattle flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Champaign-Seattle flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Champaign to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Champaign with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

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

How much does it cost to fly round-trip from Champaign to Seattle?

Reviews of airlines servicing Seattle

Get insights into the airlines that provide service to Seattle. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Seattle. Reviews last updated July 19, 2026.
Get a feel of what it's like to fly with American Airlines from Champaign to Seattle by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
American Airlines
7.1
Good
11,827 reviews

Overall

7.1

Entertainment

6.8

Food

6.4

Boarding

7.5

Comfort

7.2

Crew

7.9

Reviews

1 / 20
4.0
Okay

Elizabeth,Mar 2026

ORD - MIA

Staff was rude and flight attendants 2 out of 3 looked like they had just been thru a hurricane.
American Airlines
7.1
Good
11,827 reviews
American Airlines
7.1
Good
11,827 reviews

Overall

7.1

Entertainment

6.8

Food

6.4

Boarding

7.5

Comfort

7.2

Crew

7.9

Reviews

1 / 20
4.0
Okay

Elizabeth,Mar 2026

ORD - MIA

Staff was rude and flight attendants 2 out of 3 looked like they had just been thru a hurricane.

Related info for your journey

Find useful and relevant information for your journey from Champaign to Seattle. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Champaign to Seattle?

    A quick flight from Champaign to Seattle can take about 9h 05m. American Airlines provides one of the quickest options available for as low as $338. There are 1757 mi between Champaign and Seattle. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What is the cheapest airline to fly from Champaign to Seattle round-trip?

    Cheapflights users have booked flights from Champaign to Seattle round-trip from $254. Users have found that American Airlines is 58% cheaper than the other options available to this destination.

  • Can I find deals for flights from Champaign to Seattle that include hotel bookings?

    Yes. In addition to deals on Champaign to Seattle flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Champaign to Seattle?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Champaign to Seattle.

  • Can I find deals for business class flights from Champaign to Seattle?

    Yes. Cheapflights offers flight deals from Champaign to Seattle by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Traveling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
SeaTac
Tacoma
Lacey
Leavenworth
Olympia
Ocean Shores
Edmonds
Snoqualmie
Tumwater
Tukwila
Renton
Kent
Lynnwood
Puyallup
Ellensburg
Fife
Marysville
Lakewood
Issaquah
Shoreline

Browse thousands of different options on Cheapflights for your next trip

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Top airline flying from Champaign to Seattle

Discover the top airline that operate flights from Champaign to Seattle. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 19, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$254Average$501FlexibilityNo cancel feeOn-time71%

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