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$378+ 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 5/2. Fares are subject to change and may not be available on all flights or dates of travel.
CMI — SFO
Feb 14 — Feb 211
Sat 2/14
Sat 2/21
1 adult, Economy
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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 January 15, 2026.

Most accurate provider

Expedia
2 stars

Most trusted provider

Expedia
3 stars

Round-trip from

$398
(American Airlines)

One-way from

$378
(American Airlines)

Popular in

November

Cheapest in

January

Average price

$378
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. 22% potential increase in price ($154 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($29 potential savings vs. average RT price).
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Average for round-trip flights in January 2026
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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 January 15, 2026.

This American Airlines deal was found by Cheapflights users on 1/14. 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.
Fri 2/132:54 pm
CMI
-
SFO
1 stop9h 13m
American Airlines
Wed 2/1812:08 pm
SFO
-
CMI
1 stop6h 46m
American Airlines
Deal found 1/14$398
This American Airlines deal was found by Cheapflights users on 1/15. 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 2/149:53 am
CMI
-
SFO
2 stops11h 23m
American Airlines
Wed 2/189:25 am
SFO
-
CMI
2 stops10h 19m
American Airlines
Deal found 1/15$409
This American Airlines deal was found by Cheapflights users on 1/14. 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.
Sat 1/317:03 am
CMI
-
SFO
1 stop8h 44m
American Airlines
Thu 2/56:00 am
SFO
-
CMI
1 stop7h 01m
American Airlines
Deal found 1/14$433
This American Airlines deal was found by Cheapflights users on 1/14. 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.
Thu 1/297:03 am
CMI
-
SFO
1 stop8h 43m
American Airlines
Mon 2/26:00 am
SFO
-
CMI
1 stop7h 01m
American Airlines
Deal found 1/14$468
This American Airlines deal was found by Cheapflights users on 1/15. 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 2/149:53 am
CMI
-
SFO
1 stop8h 50m
American Airlines
Mon 2/166:00 am
SFO
-
CMI
1 stop6h 24m
American Airlines
Deal found 1/15$472

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 January 15, 2026.
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

Sat 2/14

9:53 am-4:43 pm

1 stop8h 50m

San Francisco

Wed 2/18

10:36 am-9:44 pm

1 stop9h 08m

$398

ChampaignSan Francisco

CMI - SFO

CMISFO

Champaign University-Willard

Wed 4/29

6:47 pm-11:54 pm

1 stop7h 07m

San Francisco

Sat 5/2

5:34 am-2:31 pm

1 stop6h 57m

$398

ChampaignSan Francisco

CMI - SFO

CMISFO

Champaign University-Willard

Fri 2/13

3:47 pm-11:47 pm

1 stop10h 00m

San Francisco

Wed 2/18

7:00 pm-9:21 am

2 stops12h 21m

$404

ChampaignSan Francisco

CMI - SFO

CMISFO

Champaign University-Willard

Sat 1/31

7:03 am-1:47 pm

1 stop8h 44m

San Francisco

Thu 2/5

6:00 am-3:01 pm

1 stop7h 01m

$433

ChampaignSan Francisco

CMI - SFO

CMISFO

Champaign University-Willard

Fri 1/30

3:45 pm-11:12 pm

1 stop9h 27m

San Francisco

Tue 2/3

10:11 am-9:06 pm

1 stop8h 55m

$468

ChampaignSan Francisco

CMI - SFO

CMISFO

Champaign University-Willard

Thu 1/29

7:03 am-1:46 pm

1 stop8h 43m

San Francisco

Mon 2/2

6:00 am-3:01 pm

1 stop7h 01m

$468

ChampaignSan Francisco

CMI - SFO

CMISFO

Champaign University-Willard

Sat 5/2

6:47 pm-11:54 pm

1 stop7h 07m

$378

ChampaignSan Francisco

CMI - SFO

CMISFO

Champaign University-Willard

Mon 5/18

3:01 pm-11:09 pm

1 stop10h 08m

$451

ChampaignSan Francisco

CMI - SFO

CMISFO

Champaign University-Willard

Sun 5/17

6:00 am-10:58 am

1 stop6h 58m

$471

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/14

  • 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 January 15, 2026.
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
11,129 reviews

Boarding

7.5

Food

6.4

Comfort

7.2

Overall

7.2

Crew

8.0

Entertainment

6.9

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
11,129 reviews
American Airlines
7.2
Good
11,129 reviews

Boarding

7.5

Food

6.4

Comfort

7.2

Overall

7.2

Crew

8.0

Entertainment

6.9

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 8h 50m. American Airlines provides one of the quickest options available for as low as $398. 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 30% 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
Santa Clara
Livermore
Watsonville
San Bruno
Daly City
Sunnyvale
Turlock
San Carlos
San Ramon
Manteca
Vallejo
San Lorenzo
Hollister
Redwood City
Union City
Elk Grove
Foster City

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Alternative routes for Champaign to San Francisco

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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 January 15, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$378Average$549FlexibilityNo cancel feeOn-time71%

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