Champaign

$364+ Cheap flights from Seattle to Champaign (SEA - CMI)

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 8/23. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — CMI
Jul 13 — Jul 201
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Seattle to Champaign with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Seattle to Champaign

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Champaign (CMI). 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 8, 2025.

Round-trip from

$458
(American Airlines)

One-way from

$364
(American Airlines)

Popular in

December

Cheapest in

October

Average price

$547
From Seattle/Tacoma Intl to Champaign University-Willard
One-way flight from Seattle/Tacoma Intl to Champaign University-Willard
Highest demand for flights based on searches. 20% potential increase in price ($136 potential increase over avg. RT price).
Cheapest flight prices on average. 7% potential price decrease ($36 potential savings vs. average RT price).
Average for round-trip flights in July 2025

Find flight deals from Seattle to Champaign

Cheapest flights from Seattle to Champaign
Explore the most affordable flight options available from Seattle to Champaign. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 8, 2025.

This American Airlines deal was found by Cheapflights users on 7/8. 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.
Wed 7/235:15 amSEA - CMI
1 stop7h 35mAmerican Airlines
Sun 7/272:51 pmCMI - SEA
1 stop7h 34mAmerican Airlines
Deal found 7/8$458

Cheapflights Fare Finder

Customize your flight search to find flights from Seattle to Champaign 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 8, 2025.
Use the filters below to find and compare flights from Seattle to Champaign that are best for you.

Fly from

Seattle

Fly to

Champaign

Route

Depart

Return

Price

SeattleChampaign

SEA - CMI

SEACMI

Seattle/Tacoma Intl

Wed 7/23

5:15 am-2:50 pm

1 stop7h 35m

Champaign University-Willard

Sun 7/27

2:51 pm-8:25 pm

1 stop7h 34m

$458

SeattleChampaign

SEA - CMI

SEACMI

Seattle/Tacoma Intl

Sat 8/23

5:25 am-3:16 pm

1 stop7h 51m

$364

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/8

Best time to book a flight from Seattle to Champaign

Have a flexible travel schedule? Discover the best time to fly to Champaign from Seattle 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 Seattle to Champaign

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

Currently, August is the cheapest month in which you can book a flight from Seattle to Champaign (average of $384). Flying from Seattle to Champaign in June is currently the most expensive (average of $549). 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 Champaign

Get insights into the airlines that provide service to Champaign. 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 Champaign. Reviews last updated July 8, 2025.
Get a feel of what it's like to fly with American Airlines from Seattle to Champaign by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Boarding

7.5

Overall

7.2

Comfort

7.2

Food

6.5

Crew

8.0

Entertainment

6.9

Reviews

1 / 20
2.0
Mediocre

Anonymous,Oct 2024

LAX - ORD

The seats are just SO UNCOMFORTABLE it completely ruins the experience, especially on a redeye. I was so exhausted but couldn’t sleep a wink because it was just so incredibly uncomfortable. I don’t know who designs airplane seats, but they’re curved forward, forcing your body into a slouching position. Please. Please please get new seats. Also ones that actually extent to the bulkhead so that when you try to lean against the wall, you don’t just fall through the gap

Boarding

7.5

Overall

7.2

Comfort

7.2

Food

6.5

Crew

8.0

Entertainment

6.9

Reviews

1 / 20
2.0
Mediocre

Anonymous,Oct 2024

LAX - ORD

The seats are just SO UNCOMFORTABLE it completely ruins the experience, especially on a redeye. I was so exhausted but couldn’t sleep a wink because it was just so incredibly uncomfortable. I don’t know who designs airplane seats, but they’re curved forward, forcing your body into a slouching position. Please. Please please get new seats. Also ones that actually extent to the bulkhead so that when you try to lean against the wall, you don’t just fall through the gap

Related info for your journey

Find useful and relevant information for your journey from Seattle to Champaign. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
  • What is the cheapest airline to fly from Seattle to Champaign round-trip?

    According to our current data, American Airlines ($458), offers the cheapest pricing from Seattle to Champaign. You may be able to fly from Seattle to Champaign for 12% less than the average price by searching for this airline.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Seattle to Champaign 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 Seattle to Champaign?

    Currently, August is the cheapest month in which you can book a flight from Seattle to Champaign (average of $384). Flying from Seattle to Champaign in June is currently the most expensive (average of $549). 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
Danville

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 Seattle to Champaign

Discover the top airline that operate flights from Seattle to Champaign. 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 8, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$220Average$543FlexibilityNo cancel feeOn-time71%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.