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$378+ Cheap flights from Champaign to San Francisco (CMI - SFO)

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 12/5. Fares are subject to change and may not be available on all flights or dates of travel.
CMI — SFO
Dec 4 — Dec 111
Thu 12/4
Thu 12/11
1 adult, Economy
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Find flight deals from Champaign to San Francisco

Cheapest flights from Champaign to San Francisco
Explore the most affordable flight options available from Champaign to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 4, 2025.

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.
Fri 12/56:52 amCMI - SFO
1 stop8h 42mAmerican Airlines
Tue 12/96:00 amSFO - CMI
1 stop6h 36mAmerican Airlines
Deal found 11/4$378
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.
Sat 11/156:45 amCMI - SFO
1 stop8h 52mAmerican Airlines
Tue 11/186:00 amSFO - CMI
1 stop8h 00mAmerican Airlines
Deal found 11/3$508
This KAYAK 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/63:15 pmCMI - SFO
1 stop7h 41mAmerican Airlines
Sat 11/86:00 amSFO - CMI
1 stop6h 41mAmerican Airlines
Deal found 11/4$687
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 11/183:15 pmCMI - SFO
1 stop10h 10mAmerican Airlines
Tue 11/2510:16 amSFO - CMI
1 stop8h 23mAmerican Airlines
Deal found 11/3$720
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 11/1811:20 amCMI - SFO
2 stops9h 42mAmerican Airlines
Sat 11/229:00 amSFO - CMI
2 stops8h 40mAmerican Airlines
Deal found 11/3$858
This KAYAK 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/66:00 amCMI - SFO
1 stop9h 07mAmerican Airlines
Fri 11/711:18 pmSFO - CMI
1 stop9h 26mAmerican Airlines
Deal found 11/4$924

Cheap flight deals from Champaign to San Francisco

Discover tips and strategies to find the most affordable flight options for your journey from Champaign (CMI) to San Francisco (SFO). 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 4, 2025.

Most accurate provider

Expedia
2 stars

Most trusted provider

Expedia
3 stars

Round-trip from

$378
(American Airlines)

Popular in

January

Cheapest in

September

Average price

$519
Provider with most accurate pricing for Champaign University-Willard-San Francisco flight deals.
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Provider most trusted by Cheapflights users for Champaign University-Willard-San Francisco flights.
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From Champaign University-Willard to San Francisco
Search Deals
Highest demand for flights based on searches. 15% potential increase in price ($99 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($20 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Champaign to San Francisco 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 November 4, 2025.
Use the filters below to find and compare flights from Champaign to San Francisco that are best for you.

Fly from

Champaign

Fly to

San Francisco

Route

Depart

Return

Price

ChampaignSan Francisco

CMI - SFO

CMISFO

Champaign University-Willard

Fri 12/5

6:06 am-11:26 am

1 stop7h 20m

San Francisco

Tue 12/9

12:10 pm-8:27 pm

1 stop6h 17m

$378

ChampaignSan Francisco

CMI - SFO

CMISFO

Champaign University-Willard

Tue 11/18

3:15 pm-8:56 pm

1 stop7h 41m

San Francisco

Sat 11/22

11:18 pm-10:45 am

1 stop9h 27m

$508

ChampaignSan Francisco

CMI - SFO

CMISFO

Champaign University-Willard

Sat 11/15

6:45 am-1:37 pm

1 stop8h 52m

San Francisco

Tue 11/18

6:00 am-4:00 pm

1 stop8h 00m

$508

ChampaignSan Francisco

CMI - SFO

CMISFO

Champaign University-Willard

Fri 4/3

6:26 am-10:53 am

1 stop6h 27m

San Francisco

Tue 4/7

11:47 pm-10:37 am

1 stop8h 50m

$542

ChampaignSan Francisco

CMI - SFO

CMISFO

Champaign University-Willard

Thu 12/11

3:16 pm-10:52 pm

1 stop9h 36m

$441

ChampaignSan Francisco

CMI - SFO

CMISFO

Champaign University-Willard

Sat 12/20

6:00 am-4:13 pm

2 stops12h 13m

$499

ChampaignSan Francisco

CMI - SFO

CMISFO

Champaign University-Willard

Fri 12/19

2:57 pm-9:02 pm

1 stop8h 05m

$522

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/3

  • Most accurate provider: When it comes to deals on Champaign-San Francisco flights, users find the pricing of Expedia to be most consistent on Cheapflights vs. Expedia Users can find the same prices on Champaign-San Francisco flight deals on Cheapflights vs. Expedia 90-95% of the time. Price accuracy is based on data collected from Champaign-San Francisco flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Champaign-San Francisco 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-San Francisco 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 San Francisco

Have a flexible travel schedule? Discover the best time to fly to San Francisco 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 San Francisco

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

Currently, December is the cheapest month in which you can book a flight from Champaign to San Francisco (average of $228). Flying from Champaign to San Francisco in April is currently the most expensive (average of $376). 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 San Francisco

Get insights into the airlines that provide service to San Francisco. 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 San Francisco. Reviews last updated November 4, 2025.
Get a feel of what it's like to fly with American Airlines from Champaign to San Francisco 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
7.2
Good
11,040 reviews

Crew

8.0

Comfort

7.2

Boarding

7.5

Entertainment

6.9

Food

6.4

Overall

7.2

Reviews

1 / 20
8.0
Excellent

Diana,Jul 2024

ORD - IND

Shout out to Isabelle and Debbie who went above and beyond to make it a good experience. Wheelchair service and workers were excellent and much appreciated.
American Airlines
7.2
Good
11,040 reviews
American Airlines
7.2
Good
11,040 reviews

Crew

8.0

Comfort

7.2

Boarding

7.5

Entertainment

6.9

Food

6.4

Overall

7.2

Reviews

1 / 20
8.0
Excellent

Diana,Jul 2024

ORD - IND

Shout out to Isabelle and Debbie who went above and beyond to make it a good experience. Wheelchair service and workers were excellent and much appreciated.

Related info for your journey

Find useful and relevant information for your journey from Champaign to San Francisco. 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 San Francisco?

    A quick flight from Champaign to San Francisco can take about 7h 20m. American Airlines provides one of the quickest options available for as low as $378. The distance from Champaign to San Francisco is about 1831 mi.

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

    American Airlines, at $378, was found to be the cheapest airline from Champaign to San Francisco.. Users have found that American Airlines is 32% cheaper than the other options available to this destination.

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

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

  • How can I find direct flights from Champaign to San Francisco?

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

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

    Yes. Cheapflights offers flight deals from Champaign to San Francisco 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 San Francisco?

    Currently, December is the cheapest month in which you can book a flight from Champaign to San Francisco (average of $228). Flying from Champaign to San Francisco in April is currently the most expensive (average of $376). 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 San Francisco?

Book flights to San Francisco if you plan to visit one of these locations
Roseville
South San Francisco
Santa Cruz
Livermore
Turlock
Watsonville
Sunnyvale
Santa Clara
Antioch
Manteca
Vallejo
Hollister
Vacaville
San Bruno
Foster City
Redwood City
Union City
Fairfield
Burlingame
Lodi

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Top airline flying from Champaign to San Francisco

Discover the top airline that operate flights from Champaign to San Francisco. 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 November 4, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$378Average$549FlexibilityNo cancel feeOn-time71%

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