$402+ Cheap flights from Champaign to Seattle (CMI - SEA)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/20. Fares are subject to change and may not be available on all flights or dates of travel.
CMI — SEA
Dec 5 — Dec 121
Round-trip
1 adult, Economy
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Find cheap flights from Champaign to Seattle with Cheapflights
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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
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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 Champaign to Seattle
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Cheapest flights from Champaign to SeattleExplore 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 November 5, 2026.
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 November 5, 2026.
This American Airlines deal was found by Cheapflights users on 11/3. 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 11/112:32 pm -
1 stop9h 39m
Wed 11/1812:47 pm -
1 stop7h 15m
Deal found 11/3![American Airlines logo]()
$516
This American Airlines deal was found by Cheapflights users on 11/3. 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.
Tue 12/17:01 pm -
1 stop7h 41m
Mon 12/710:51 am -
1 stop7h 34m
Deal found 11/3![American Airlines logo]()
$529
This American Airlines deal was found by Cheapflights users on 11/1. 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 11/186:50 pm -
1 stop7h 45m
Tue 11/245:24 pm -
1 stop16h 14m
Deal found 11/1![American Airlines logo]()
$548
This American Airlines deal was found by Cheapflights users on 10/31. 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 11/73:21 pm -
1 stop6h 58m
Mon 11/912:47 pm -
1 stop7h 15m
Deal found 10/31![American Airlines logo]()
$570
This American Airlines deal was found by Cheapflights users on 11/4. 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.
Tue 11/1712:13 pm -
1 stop10h 07m
Tue 12/110:33 am -
1 stop7h 45m
Deal found 11/4![American Airlines logo]()
$586
This American Airlines deal was found by Cheapflights users on 10/31. 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 11/62:32 pm -
1 stop9h 39m
Mon 11/912:47 pm -
1 stop7h 15m
Deal found 10/31![American Airlines logo]()
$624
This American Airlines deal was found by Cheapflights users on 11/2. 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.
Tue 11/1712:13 pm -
1 stop10h 07m
Sat 11/215:24 pm -
1 stop16h 14m
Deal found 11/2![American Airlines logo]()
$651
This American Airlines deal was found by Cheapflights users on 11/3. 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 12/117:11 am -
1 stop9h 33m
Fri 12/1810:47 am -
1 stop8h 14m
Deal found 11/3![American Airlines logo]()
$737
This American Airlines deal was found by Cheapflights users on 11/3. 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.
Tue 11/1712:13 pm -
1 stop10h 07m
Fri 11/2011:36 pm -
1 stop10h 02m
Deal found 11/3![American Airlines logo]()
$934
Best flights from Champaign to SeattleDiscover carefully curated flight deals from Champaign to Seattle that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated November 5, 2026.
Discover carefully curated flight deals from Champaign to Seattle that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated November 5, 2026.
This American Airlines deal was found by Cheapflights users on 11/3. 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 11/112:32 pm -
1 stop9h 39m
Wed 11/1812:47 pm -
1 stop7h 15m
Deal found 11/3![American Airlines logo]()
$516
This American Airlines deal was found by Cheapflights users on 11/3. 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 12/27:00 pm -
1 stop7h 47m
Mon 12/712:37 pm -
1 stop7h 27m
Deal found 11/3![American Airlines logo]()
$529
This American Airlines deal was found by Cheapflights users on 11/1. 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 11/186:50 pm -
1 stop7h 45m
Tue 11/245:24 pm -
1 stop16h 14m
Deal found 11/1![American Airlines logo]()
$548
This American Airlines deal was found by Cheapflights users on 11/2. 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.
Tue 11/1712:13 pm -
1 stop10h 07m
Sat 11/215:24 pm -
1 stop16h 14m
Deal found 11/2![American Airlines logo]()
$651
This American Airlines deal was found by Cheapflights users on 11/1. 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.
Tue 11/1712:13 pm -
1 stop10h 07m
Tue 12/110:33 am -
1 stop7h 45m
Deal found 11/1![American Airlines logo]()
$751
This American Airlines deal was found by Cheapflights users on 10/31. 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.
Sun 11/1512:13 pm -
1 stop10h 07m
Thu 11/1910:33 am -
1 stop7h 45m
Deal found 10/31![American Airlines logo]()
$1,010
This American Airlines deal was found by Cheapflights users on 11/3. 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.
Tue 11/176:08 am -
2 stops11h 46m
Fri 11/203:15 pm -
1 stop18h 23m
Deal found 11/3![American Airlines logo]()
$1,254
Last-minute flights from Champaign to SeattleDiscover last-minute flight deals from Champaign to Seattle. Data last updated November 5, 2026 and is based on user searches.
Discover last-minute flight deals from Champaign to Seattle. Data last updated November 5, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 10/31. 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 11/62:32 pm -
1 stop9h 39m
Mon 11/912:47 pm -
1 stop7h 15m
Deal found 10/31![American Airlines logo]()
$624
This American Airlines deal was found by Cheapflights users on 10/31. 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 11/73:21 pm -
1 stop6h 58m
Mon 11/912:47 pm -
1 stop7h 15m
Deal found 10/31![American Airlines logo]()
$570
This American Airlines deal was found by Cheapflights users on 11/3. 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 11/112:32 pm -
1 stop9h 39m
Wed 11/1812:47 pm -
1 stop7h 15m
Deal found 11/3![American Airlines logo]()
$516
This American Airlines deal was found by Cheapflights users on 11/4. 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.
Tue 11/1712:13 pm -
1 stop10h 07m
Tue 12/110:33 am -
1 stop7h 45m
Deal found 11/4![American Airlines logo]()
$586
This American Airlines deal was found by Cheapflights users on 11/2. 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.
Tue 11/1712:13 pm -
1 stop10h 07m
Sat 11/215:24 pm -
1 stop16h 14m
Deal found 11/2![American Airlines logo]()
$651
This American Airlines deal was found by Cheapflights users on 11/3. 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.
Tue 11/1712:13 pm -
1 stop10h 07m
Fri 11/2011:36 pm -
1 stop10h 02m
Deal found 11/3![American Airlines logo]()
$934
This American Airlines deal was found by Cheapflights users on 11/1. 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 11/186:50 pm -
1 stop7h 45m
Tue 11/245:24 pm -
1 stop16h 14m
Deal found 11/1![American Airlines logo]()
$548
This American Airlines deal was found by Cheapflights users on 11/3. 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.
Tue 12/17:01 pm -
1 stop7h 41m
Mon 12/710:51 am -
1 stop7h 34m
Deal found 11/3![American Airlines logo]()
$529
This American Airlines deal was found by Cheapflights users on 11/3. 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 12/117:11 am -
1 stop9h 33m
Fri 12/1810:47 am -
1 stop8h 14m
Deal found 11/3![American Airlines logo]()
$737
One-way flights from Champaign to SeattleSearch for one-way flight options from Champaign to Seattle. Find affordable one-way fares based on user searches. Data last updated November 5, 2026.
Search for one-way flight options from Champaign to Seattle. Find affordable one-way fares based on user searches. Data last updated November 5, 2026.
This American Airlines deal was found by Cheapflights users on 11/4. 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 1/2011:41 am -
1 stop10h 32m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/4![American Airlines logo]()
$402
This American Airlines deal was found by Cheapflights users on 11/2. 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 12/247:00 am -
1 stop9h 57m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/2![American Airlines logo]()
$458
This American Airlines deal was found by Cheapflights users on 11/2. 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 11/207:25 pm -
1 stop7h 17m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/2![American Airlines logo]()
$505
This American Airlines deal was found by Cheapflights users on 11/4. 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 12/37:11 am -
1 stop9h 33m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/4![American Airlines logo]()
$510
This Qatar Airways deal was found by Cheapflights users on 11/2. 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/202:29 pm -
2 stops47h 46m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/2![Qatar Airways logo]()
$2,000
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 November 5, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $516 (American Airlines) |
One-way from | $402 (American Airlines) |
Popular in | March |
Cheapest in | August |
Average price | $543 |
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 7,457,451 searches. Data last updated November 5, 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
Cheapest round-trip
ChampaignSeattle
CMI Champaign University-Willard - SEA Seattle/Tacoma Intl
CMISEA
Champaign University-Willard
Thu 12/24
7:00 am-2:57 pm
1 stop9h 57m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$458
Quickest round-trip
ChampaignSeattle
CMI Champaign University-Willard - SEA Seattle/Tacoma Intl
CMISEA
Champaign University-Willard
Fri 11/20
7:25 pm-12:42 am
1 stop7h 17m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$505
ChampaignSeattle
CMI Champaign University-Willard - SEA Seattle/Tacoma Intl
CMISEA
Champaign University-Willard
Thu 12/3
7:11 am-2:44 pm
1 stop9h 33m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$510
ChampaignSeattle
CMI Champaign University-Willard - SEA Seattle/Tacoma Intl
CMISEA
Champaign University-Willard
Wed 11/11
2:32 pm-10:11 pm
1 stop9h 39m
Seattle/Tacoma Intl
Wed 11/18
12:47 pm-10:02 pm
1 stop7h 15m
$516
ChampaignSeattle
CMI Champaign University-Willard - SEA Seattle/Tacoma Intl
CMISEA
Champaign University-Willard
Wed 12/2
7:00 pm-12:47 am
1 stop7h 47m
Seattle/Tacoma Intl
Mon 12/7
12:37 pm-10:04 pm
1 stop7h 27m
$529
ChampaignSeattle
CMI Champaign University-Willard - SEA Seattle/Tacoma Intl
CMISEA
Champaign University-Willard
Wed 11/18
6:50 pm-12:35 am
1 stop7h 45m
Seattle/Tacoma Intl
Tue 11/24
5:24 pm-11:38 am
1 stop16h 14m
$548
ChampaignSeattle
CMI Champaign University-Willard - SEA Seattle/Tacoma Intl
CMISEA
Champaign University-Willard
Tue 11/17
12:13 pm-8:20 pm
1 stop10h 07m
Seattle/Tacoma Intl
Sat 11/21
5:24 pm-11:38 am
1 stop16h 14m
$651
ChampaignSeattle
CMI Champaign University-Willard - SEA Seattle/Tacoma Intl
CMISEA
Champaign University-Willard
Tue 11/17
12:13 pm-8:20 pm
1 stop10h 07m
Seattle/Tacoma Intl
Tue 12/1
10:33 am-8:18 pm
1 stop7h 45m
$751
ChampaignSeattle
CMI Champaign University-Willard - SEA Seattle/Tacoma Intl
CMISEA
Champaign University-Willard
Wed 1/20
7:16 am-5:49 pm
2 stops12h 33m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$802
ChampaignSeattle
CMI Champaign University-Willard - SEA Seattle/Tacoma Intl
CMISEA
Champaign University-Willard
Sun 11/15
12:13 pm-8:20 pm
1 stop10h 07m
Seattle/Tacoma Intl
Thu 11/19
10:33 am-8:18 pm
1 stop7h 45m
$1,010
Showing 1-10 of 12 resultsSorted 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 November.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars |
- 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.
CMI-SEA
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
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 November 5, 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.
Boarding
7.4
Comfort
7.2
Crew
7.9
Food
6.4
Entertainment
6.8
Overall
7.0
Reviews
1 / 20
4.0
OkayElizabeth,Mar 2026
ORD - MIA
Boarding
7.4
Comfort
7.2
Crew
7.9
Food
6.4
Entertainment
6.8
Overall
7.0
Reviews
1 / 20
4.0
OkayElizabeth,Mar 2026
ORD - MIA
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.
Traveling to a place near Seattle?
Book flights to Seattle if you plan to visit one of these locationsSeaTac
Renton
Lacey
Tacoma
Leavenworth
Tukwila
Snoqualmie
Puyallup
Lynnwood
Centralia
Kent
Tumwater
Ocean Shores
Ellensburg
Issaquah
Olympia
Lakewood
Poulsbo
Marysville
Shoreline
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Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
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Champaign and Seattle flights
Browse other Champaign and Seattle flight options. Last updated on November 5, 2026.
Other flights from Champaign
Browse through other flights departing from Champaign. Flights are based on user searches made on Cheapflights and were last updated on November 5, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Other flights to Seattle
Explore flights to Seattle departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on November 5, 2026.
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 7,457,451 searches. Data last updated November 5, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$338 | Average$514 | FlexibilityNo cancel fee | On-time71% |