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$368+ Cheap flights from Champaign to San Francisco (CMI - SFO)

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 1/20. Fares are subject to change and may not be available on all flights or dates of travel.
CMI — SFO
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
1 adult, Economy
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Cheap 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 December 18, 2025.

This American Airlines deal was found by Cheapflights users on 12/16. 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 12/316:52 amCMI - SFO
1 stop8h 21mAmerican Airlines
Sun 1/46:00 amSFO - CMI
1 stop6h 27mAmerican Airlines
Deal found 12/16$817
This American Airlines deal was found by Cheapflights users on 12/14. 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 12/307:10 pmCMI - SFO
1 stop17h 56mAmerican Airlines
Sat 1/36:00 amSFO - CMI
1 stop6h 39mAmerican Airlines
Deal found 12/14$1,063

Find 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 December 18, 2025.

Most accurate provider

Expedia
2 stars

Most trusted provider

Expedia
3 stars

Round-trip from

$378
(American Airlines)

One-way from

$368
(American Airlines)

Popular in

November

Cheapest in

January

Average price

$726
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
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One-way flight from Champaign University-Willard to San Francisco
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Highest demand for flights based on searches. 20% potential increase in price ($144 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($28 potential savings vs. average RT price).
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Average for round-trip flights in December 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 December 18, 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

Tue 1/20

3:45 pm-11:12 pm

1 stop9h 27m

San Francisco

Tue 1/27

11:51 am-9:06 pm

1 stop7h 15m

$378

ChampaignSan Francisco

CMI - SFO

CMISFO

Champaign University-Willard

Sat 1/17

3:45 pm-11:12 pm

1 stop9h 27m

San Francisco

Wed 1/21

11:48 am-9:17 pm

1 stop7h 29m

$378

ChampaignSan Francisco

CMI - SFO

CMISFO

Champaign University-Willard

Fri 1/16

11:24 am-8:10 pm

2 stops10h 46m

San Francisco

Wed 1/21

10:11 am-9:17 pm

1 stop9h 06m

$384

ChampaignSan Francisco

CMI - SFO

CMISFO

Champaign University-Willard

Mon 1/12

3:45 pm-9:37 pm

1 stop7h 52m

San Francisco

Fri 1/16

7:00 am-8:27 pm

2 stops11h 27m

$581

ChampaignSan Francisco

CMI - SFO

CMISFO

Champaign University-Willard

Thu 1/1

6:52 am-1:13 pm

1 stop8h 21m

San Francisco

Mon 1/5

6:00 am-2:27 pm

1 stop6h 27m

$644

ChampaignSan Francisco

CMI - SFO

CMISFO

Champaign University-Willard

Tue 1/20

3:45 pm-9:37 pm

1 stop7h 52m

$368

ChampaignSan Francisco

CMI - SFO

CMISFO

Champaign University-Willard

Thu 2/26

6:00 am-2:08 pm

1 stop10h 08m

$441

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/15

  • 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 $237). 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 December 18, 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
11,055 reviews

Crew

8.0

Boarding

7.5

Food

6.5

Overall

7.2

Entertainment

6.9

Comfort

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
11,055 reviews
American Airlines
7.2
Good
11,055 reviews

Crew

8.0

Boarding

7.5

Food

6.5

Overall

7.2

Entertainment

6.9

Comfort

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 9h 27m. 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 31% 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 $237). 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
Manteca
Watsonville
Redwood City
Sunnyvale
Santa Clara
San Bruno
Daly City
San Carlos
Vallejo
Hollister
San Ramon
Foster City
Union City
Davis
Emeryville

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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 December 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$378Average$549FlexibilityNo cancel feeOn-time71%

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