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$266+ 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 5/18. Fares are subject to change and may not be available on all flights or dates of travel.
CMI — SEA
Apr 9 — Apr 161
Thu 4/9
Thu 4/16
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 March 10, 2026.

This American Airlines deal was found by Cheapflights users on 3/9. 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 5/86:55 pm
CMI
-
SEA
1 stop7h 41m
American Airlines
Mon 5/117:10 am
SEA
-
CMI
1 stop9h 14m
American Airlines
Deal found 3/9$288
This United Airlines deal was found by Cheapflights users on 3/9. 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.
Fri 5/89:49 am
CMI
-
SEA
2 stops11h 59m
United Airlines
Mon 5/1110:53 pm
SEA
-
CMI
1 stop8h 13m
United Airlines
Deal found 3/9$314
This United Airlines deal was found by Cheapflights users on 3/8. 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.
Thu 5/211:32 pm
CMI
-
SEA
2 stops10h 27m
United Airlines
Thu 5/2811:52 pm
SEA
-
CMI
1 stop7h 02m
United Airlines
Deal found 3/8$334
This American Airlines deal was found by Cheapflights users on 3/10. 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 12/23:16 pm
CMI
-
SEA
1 stop9h 45m
American Airlines
Wed 12/911:22 am
SEA
-
CMI
1 stop6h 16m
American Airlines
Deal found 3/10$338
This American Airlines deal was found by Cheapflights users on 3/8. 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.
Thu 5/216:44 pm
CMI
-
SEA
1 stop6h 55m
American Airlines
Thu 5/2811:58 pm
SEA
-
CMI
1 stop9h 12m
American Airlines
Deal found 3/8$367
This American Airlines deal was found by Cheapflights users on 3/6. 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 3/216:46 am
CMI
-
SEA
1 stop8h 08m
American Airlines
Tue 3/2412:07 am
SEA
-
CMI
1 stop7h 15m
American Airlines
Deal found 3/6$368
This United Airlines deal was found by Cheapflights users on 3/9. 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.
Tue 6/29:49 am
CMI
-
SEA
2 stops10h 10m
United Airlines
Tue 6/911:00 pm
SEA
-
CMI
2 stops11h 50m
United Airlines
Deal found 3/9$372
This United Airlines deal was found by Cheapflights users on 3/9. 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.
Fri 9/111:32 pm
CMI
-
SEA
1 stop7h 27m
United Airlines
Sat 9/195:22 pm
SEA
-
CMI
2 stops13h 32m
United Airlines
Deal found 3/9$373
This United Airlines deal was found by Cheapflights users on 3/8. 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.
Sat 11/76:30 am
CMI
-
SEA
1 stop7h 10m
United Airlines
Wed 11/1110:40 pm
SEA
-
CMI
1 stop8h 14m
United Airlines
Deal found 3/8$378
This American Airlines deal was found by Cheapflights users on 3/9. 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 3/256:00 am
CMI
-
SEA
1 stop8h 47m
American Airlines
Sat 3/2812:07 am
SEA
-
CMI
1 stop7h 15m
American Airlines
Deal found 3/9$387

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 March 10, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$288
(American Airlines)

One-way from

$266
(American Airlines)

Popular in

November

Cheapest in

September

Average price

$1,017
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. 35% potential increase in price ($347 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 15% potential price decrease ($81 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 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 March 10, 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

ChampaignSeattle

CMI - SEA

CMISEA

Champaign University-Willard

Thu 5/21

1:32 pm-9:59 pm

2 stops10h 27m

Seattle/Tacoma Intl

Thu 5/28

11:52 pm-8:54 am

1 stop7h 02m

$334

ChampaignSeattle

CMI - SEA

CMISEA

Champaign University-Willard

Tue 6/2

9:49 am-5:59 pm

2 stops10h 10m

Seattle/Tacoma Intl

Tue 6/9

11:00 pm-12:50 pm

2 stops11h 50m

$372

ChampaignSeattle

CMI - SEA

CMISEA

Champaign University-Willard

Fri 5/29

1:32 pm-1:29 am

2 stops13h 57m

Seattle/Tacoma Intl

Sat 6/6

11:52 pm-8:54 am

1 stop7h 02m

$384

ChampaignSeattle

CMI - SEA

CMISEA

Champaign University-Willard

Fri 7/10

9:49 am-9:59 pm

2 stops14h 10m

Seattle/Tacoma Intl

Wed 7/22

5:04 pm-8:54 am

2 stops13h 50m

$389

ChampaignSeattle

CMI - SEA

CMISEA

Champaign University-Willard

Fri 5/8

9:49 am-7:48 pm

2 stops11h 59m

Seattle/Tacoma Intl

Mon 5/11

2:27 pm-12:03 am

1 stop7h 36m

$404
Quickest round-trip

ChampaignSeattle

CMI - SEA

CMISEA

Champaign University-Willard

Fri 5/29

6:44 pm-11:39 pm

1 stop6h 55m

Seattle/Tacoma Intl

Sat 6/6

5:10 am-2:15 pm

1 stop7h 05m

$408

ChampaignSeattle

CMI - SEA

CMISEA

Champaign University-Willard

Tue 6/9

1:32 pm-11:10 pm

2 stops11h 38m

Seattle/Tacoma Intl

Sun 6/14

7:00 am-5:38 pm

1 stop8h 38m

$444
Cheapest one-way

ChampaignSeattle

CMI - SEA

CMISEA

Champaign University-Willard

Mon 5/18

6:55 pm-10:14 am

1 stop17h 19m

$266

ChampaignSeattle

CMI - SEA

CMISEA

Champaign University-Willard

Thu 9/3

9:49 am-9:56 pm

2 stops14h 07m

$335
Quickest one-way

ChampaignSeattle

CMI - SEA

CMISEA

Champaign University-Willard

Thu 9/3

6:36 pm-11:50 pm

1 stop7h 14m

$358

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/8

Showing 1-10 of 11 resultsSorted by cheapest first
1
2

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 March.
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

What is the cheapest month to book a flight from Champaign to Seattle?

Currently, October is the cheapest month in which you can book a flight from Champaign to Seattle (average of $234). Flying from Champaign to Seattle in January is currently the most expensive (average of $383). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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 March 10, 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
11,414 reviews

Boarding

7.5

Comfort

7.2

Crew

7.9

Entertainment

6.9

Food

6.4

Overall

7.1

Reviews

1 / 20
2.0
Mediocre

Anonymous,Mar 2026

MIA - SFO

Horrible. When they power flights for other airlines there is nothing they can do to change or accommodate any changes
American Airlines
7.1
Good
11,414 reviews
American Airlines
7.1
Good
11,414 reviews

Boarding

7.5

Comfort

7.2

Crew

7.9

Entertainment

6.9

Food

6.4

Overall

7.1

Reviews

1 / 20
2.0
Mediocre

Anonymous,Mar 2026

MIA - SFO

Horrible. When they power flights for other airlines there is nothing they can do to change or accommodate any changes

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 6h 55m. United Airlines provides one of the quickest options available for as low as $408. 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 $280. Users have found that American Airlines is 54% 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.

  • What is the cheapest month to book a flight from Champaign to Seattle?

    Currently, October is the cheapest month in which you can book a flight from Champaign to Seattle (average of $234). Flying from Champaign to Seattle in January is currently the most expensive (average of $383). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Tacoma
SeaTac
Lakewood
Ocean Shores
Olympia
Kent
Lynnwood
Edmonds
Lacey
Renton
Puyallup
Kirkland
Tukwila
Fife
Aberdeen
Shoreline
Marysville
Centralia
Federal Way
Chehalis

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 March 10, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$280Average$493FlexibilityNo cancel feeOn-time71%

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