$338+ 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 7/10. Fares are subject to change and may not be available on all flights or dates of travel.
CMI — SEA
Jun 22 — Jun 291
Round-trip
1 adult, Economy
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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 May 23, 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 May 23, 2026.
This American Airlines deal was found by Cheapflights users on 5/20. 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 7/106:28 pm
CMI
- SEA
1 stop8h 31m
American Airlines
Wed 7/225:05 am
SEA
- CMI
1 stop7h 11m
American Airlines
Deal found 5/20![American Airlines logo]()
$338
This American Airlines deal was found by Cheapflights users on 5/20. 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 7/246:28 pm
CMI
- SEA
1 stop8h 31m
American Airlines
Wed 7/295:05 am
SEA
- CMI
1 stop7h 11m
American Airlines
Deal found 5/20![American Airlines logo]()
$409
This American Airlines deal was found by Cheapflights users on 5/18. 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 7/86:36 pm
CMI
- SEA
1 stop8h 16m
American Airlines
Sat 7/115:05 am
SEA
- CMI
1 stop7h 11m
American Airlines
Deal found 5/18![American Airlines logo]()
$434
This United Airlines deal was found by Cheapflights users on 5/18. 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 10/281:32 pm
CMI
- SEA
1 stop7h 27m
United Airlines
Sat 10/3111:40 pm
SEA
- CMI
1 stop8h 14m
United Airlines
Deal found 5/18![United Airlines logo]()
$438
This American Airlines deal was found by Cheapflights users on 5/19. 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 6/176:43 pm
CMI
- SEA
1 stop7h 58m
American Airlines
Wed 6/2411:58 pm
SEA
- CMI
1 stop9h 05m
American Airlines
Deal found 5/19![American Airlines logo]()
$444
This American Airlines deal was found by Cheapflights users on 5/22. 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 5/296:39 pm
CMI
- SEA
1 stop7h 37m
American Airlines
Sat 6/65:10 am
SEA
- CMI
1 stop7h 05m
American Airlines
Deal found 5/22![American Airlines logo]()
$453
This American Airlines deal was found by Cheapflights users on 5/18. 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 7/86:36 pm
CMI
- SEA
1 stop8h 16m
American Airlines
Tue 7/145:05 am
SEA
- CMI
1 stop7h 11m
American Airlines
Deal found 5/18![American Airlines logo]()
$469
This American Airlines deal was found by Cheapflights users on 5/18. 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 7/76:36 pm
CMI
- SEA
1 stop8h 16m
American Airlines
Tue 7/145:05 am
SEA
- CMI
1 stop7h 11m
American Airlines
Deal found 5/18![American Airlines logo]()
$500
This American Airlines deal was found by Cheapflights users on 5/18. 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.
Mon 7/66:28 pm
CMI
- SEA
1 stop8h 31m
American Airlines
Tue 7/145:05 am
SEA
- CMI
1 stop7h 11m
American Airlines
Deal found 5/18![American Airlines logo]()
$504
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 May 23, 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 May 23, 2026.
This American Airlines deal was found by Cheapflights users on 5/21. 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 7/106:28 pm
CMI
- SEA
1 stop8h 31m
American Airlines
Wed 7/225:05 am
SEA
- CMI
1 stop7h 11m
American Airlines
Deal found 5/21![American Airlines logo]()
$338
This United Airlines deal was found by Cheapflights users on 5/18. 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 10/281:32 pm
CMI
- SEA
1 stop7h 27m
United Airlines
Sat 10/3111:40 pm
SEA
- CMI
1 stop8h 14m
United Airlines
Deal found 5/18![United Airlines logo]()
$438
This American Airlines deal was found by Cheapflights users on 5/19. 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 9/12:47 pm
CMI
- SEA
1 stop9h 39m
American Airlines
Tue 9/2211:54 pm
SEA
- CMI
1 stop8h 47m
American Airlines
Deal found 5/19![American Airlines logo]()
$338
This American Airlines deal was found by Cheapflights users on 5/20. 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 7/246:28 pm
CMI
- SEA
1 stop8h 31m
American Airlines
Wed 7/295:05 am
SEA
- CMI
1 stop7h 11m
American Airlines
Deal found 5/20![American Airlines logo]()
$409
This American Airlines deal was found by Cheapflights users on 5/22. 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 6/176:43 pm
CMI
- SEA
1 stop7h 58m
American Airlines
Wed 6/2411:58 pm
SEA
- CMI
1 stop9h 05m
American Airlines
Deal found 5/22![American Airlines logo]()
$480
This American Airlines deal was found by Cheapflights users on 5/18. 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 7/226:36 pm
CMI
- SEA
1 stop8h 16m
American Airlines
Sun 7/2611:56 pm
SEA
- CMI
1 stop16h 02m
American Airlines
Deal found 5/18![American Airlines logo]()
$530
This American Airlines deal was found by Cheapflights users on 5/18. 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 7/76:36 pm
CMI
- SEA
1 stop8h 16m
American Airlines
Sat 7/115:05 am
SEA
- CMI
1 stop7h 11m
American Airlines
Deal found 5/18![American Airlines logo]()
$565
Last-minute flights from Champaign to SeattleDiscover last-minute flight deals from Champaign to Seattle. Data last updated May 23, 2026 and is based on user searches.
Discover last-minute flight deals from Champaign to Seattle. Data last updated May 23, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 5/22. 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 5/296:39 pm
CMI
- SEA
1 stop7h 37m
American Airlines
Sat 6/65:10 am
SEA
- CMI
1 stop7h 05m
American Airlines
Deal found 5/22![American Airlines logo]()
$453
This American Airlines deal was found by Cheapflights users on 5/21. 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 5/316:39 pm
CMI
- SEA
1 stop7h 37m
American Airlines
Thu 6/45:10 am
SEA
- CMI
1 stop7h 05m
American Airlines
Deal found 5/21![American Airlines logo]()
$906
This American Airlines deal was found by Cheapflights users on 5/21. 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.
Mon 6/111:37 am
CMI
- SEA
1 stop14h 39m
American Airlines
Fri 6/53:05 pm
SEA
- CMI
1 stop18h 00m
American Airlines
Deal found 5/21![American Airlines logo]()
$698
This American Airlines deal was found by Cheapflights users on 5/18. 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.
Mon 6/156:43 pm
CMI
- SEA
1 stop7h 58m
American Airlines
Sun 6/2111:58 pm
SEA
- CMI
1 stop9h 05m
American Airlines
Deal found 5/18![American Airlines logo]()
$750
This American Airlines deal was found by Cheapflights users on 5/19. 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 6/176:43 pm
CMI
- SEA
1 stop7h 58m
American Airlines
Wed 6/2411:58 pm
SEA
- CMI
1 stop9h 05m
American Airlines
Deal found 5/19![American Airlines logo]()
$444
This American Airlines deal was found by Cheapflights users on 5/19. 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 6/186:43 pm
CMI
- SEA
1 stop7h 58m
American Airlines
Thu 6/255:10 am
SEA
- CMI
1 stop7h 05m
American Airlines
Deal found 5/19![American Airlines logo]()
$773
This American Airlines deal was found by Cheapflights users on 5/20. 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 6/196:43 pm
CMI
- SEA
1 stop7h 58m
American Airlines
Thu 6/2510:23 am
SEA
- CMI
1 stop9h 38m
American Airlines
Deal found 5/20![American Airlines logo]()
$632
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 May 23, 2026.
Search for one-way flight options from Champaign to Seattle. Find affordable one-way fares based on user searches. Data last updated May 23, 2026.
This American Airlines deal was found by Cheapflights users on 5/22. 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.
Mon 7/272:46 pm
CMI
- SEA
1 stop9h 40m
American Airlines
Deal found 5/22![American Airlines logo]()
$368
This American Airlines deal was found by Cheapflights users on 5/19. 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 6/66:43 pm
CMI
- SEA
1 stop7h 58m
American Airlines
Deal found 5/19![American Airlines logo]()
$433
This American Airlines deal was found by Cheapflights users on 5/23. 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 9/34:48 pm
CMI
- SEA
1 stop18h 29m
American Airlines
Deal found 5/23![American Airlines logo]()
$437
This American Airlines deal was found by Cheapflights users on 5/20. 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 8/256:09 am
CMI
- SEA
2 stops10h 48m
American Airlines
Deal found 5/20![American Airlines logo]()
$633
This American Airlines deal was found by Cheapflights users on 5/19. 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 6/1411:33 am
CMI
- SEA
2 stops9h 44m
American Airlines
Deal found 5/19![American Airlines logo]()
$902
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 May 23, 2026.
Most accurate provider | Expedia 1 star |
|---|---|
Most trusted provider | Expedia 3 stars |
Round-trip from | $338 (American Airlines) |
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 May 23, 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 - SEA
CMISEA
Champaign University-Willard
Fri 7/10
6:28 pm-12:59 am
1 stop8h 31m
Seattle/Tacoma Intl
Wed 7/22
5:05 am-2:16 pm
1 stop7h 11m
$338
ChampaignSeattle
CMI - SEA
CMISEA
Champaign University-Willard
Tue 9/1
2:47 pm-10:26 pm
1 stop9h 39m
Seattle/Tacoma Intl
Tue 9/22
11:54 pm-10:41 am
1 stop8h 47m
$338
ChampaignSeattle
CMI - SEA
CMISEA
Champaign University-Willard
Fri 7/24
6:28 pm-12:59 am
1 stop8h 31m
Seattle/Tacoma Intl
Wed 7/29
5:05 am-2:16 pm
1 stop7h 11m
$409
ChampaignSeattle
CMI - SEA
CMISEA
Champaign University-Willard
Wed 10/28
1:32 pm-6:59 pm
1 stop7h 27m
Seattle/Tacoma Intl
Sat 10/31
11:40 pm-9:54 am
1 stop8h 14m
$438
ChampaignSeattle
CMI - SEA
CMISEA
Champaign University-Willard
Wed 6/17
6:43 pm-12:41 am
1 stop7h 58m
Seattle/Tacoma Intl
Wed 6/24
11:58 pm-11:03 am
1 stop9h 05m
$480
ChampaignSeattle
CMI - SEA
CMISEA
Champaign University-Willard
Wed 7/22
6:36 pm-12:52 am
1 stop8h 16m
Seattle/Tacoma Intl
Sun 7/26
11:56 pm-5:58 pm
1 stop16h 02m
$530
Quickest round-trip
ChampaignSeattle
CMI - SEA
CMISEA
Champaign University-Willard
Tue 7/7
6:36 pm-12:52 am
1 stop8h 16m
Seattle/Tacoma Intl
Sat 7/11
5:05 am-2:16 pm
1 stop7h 11m
$565
Cheapest one-way
Quickest one-way
ChampaignSeattle
CMI - SEA
CMISEA
Champaign University-Willard
Sun 6/14
6:43 pm-12:41 am
1 stop7h 58m
$368
ChampaignSeattle
CMI - SEA
CMISEA
Champaign University-Willard
Tue 8/25
4:46 pm-11:50 pm
1 stop9h 04m
$368
ChampaignSeattle
CMI - SEA
CMISEA
Champaign University-Willard
Mon 7/27
2:46 pm-10:26 pm
1 stop9h 40m
$368
Showing 1-10 of 11 resultsSorted by cheapest first
- Most accurate provider: When it comes to deals on Champaign-Seattle flights, users find the pricing of Expedia to be most consistent on Cheapflights vs. Expedia Users can find the same prices on Champaign-Seattle flight deals on Cheapflights vs. Expedia <90% 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 Expedia the most. Expedia 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.
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 May 23, 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.
Food
6.4
Crew
7.9
Entertainment
6.9
Comfort
7.2
Overall
7.1
Boarding
7.5
Reviews
1 / 20
2.0
MediocreAnonymous,Apr 2026
DFW - BDL
Food
6.4
Crew
7.9
Entertainment
6.9
Comfort
7.2
Overall
7.1
Boarding
7.5
Reviews
1 / 20
2.0
MediocreAnonymous,Apr 2026
DFW - BDL
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
Tacoma
Ocean Shores
Olympia
Lacey
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Leavenworth
Snoqualmie
Tumwater
Tukwila
Puyallup
Kent
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Champaign and Seattle flights
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Browse through other flights departing from Champaign. Flights are based on user searches made on Cheapflights and were last updated on May 23, 2026.
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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 May 23, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$280 | Average$538 | FlexibilityNo cancel fee | On-time71% |